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Adware.Win32.Csdimonetize.BB

February 13, 2020
 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

4,321,808 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

13 Feb 2020

Arrival Details

This Adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Adware adds the following processes:

  • "%User Temp%\is-P7APG.tmp\a4e2eb58580ba378866a52d2feddd4fe0fff637b.tmp" /SL5="$2016E,3999389,243200,{malware file path and name}"
  • "%Program Files%\Transformation\406577164.exe" 0 0 0
  • "%User Temp%\is-V98J8.tmp\Ordalique.exe" /p=oih
  • %Program Files%\Transformation\406577164.exe 1
  • "%User Temp%\is-VB0CO.tmp\Ordalique.tmp" /SL5="$30172,543946,69632,%User Temp%\is-V98J8.tmp\Ordalique.exe" /p=oih
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:275457 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:3027973 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:2044940 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:2438164 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:3683351 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:2503703 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:2896925 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:3748917 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:3224637 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:406583 /prefetch:2
  • "%Program Files%\Internet Explorer\IEXPLORE.EXE" SCODEF:1268 CREDAT:2045005 /prefetch:2

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

  • %Application Data%\Microsoft\Windows\IECompatUACache
  • %Application Data%\Microsoft\CLR Security Config\v2.0.50727.312\64bit
  • %Program Files%\Transformation
  • %Application Data%\Microsoft\CLR Security Config
  • %Application Data%\Microsoft\Windows\IECompatCache
  • %Application Data%\Microsoft\CLR Security Config\v2.0.50727.312
  • %User Profile%\AppData
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions
  • %System Root%\Users
  • %User Temp%\is-VOELL.tmp\_isetup
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active
  • %Application Data%\Microsoft\Windows\DNTException
  • %User Temp%\is-V98J8.tmp\_isetup
  • %Application Data%\Microsoft\Windows\PrivacIE

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Autostart Technique

This Adware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
2552555 = "%User Temp%\is-V98J8.tmp\Ordalique.exe /VERYSILENT"

Other System Modifications

This Adware deletes the following files:

  • %AppDataLocal%Low\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Owner = "D\x06\x00\x00[\xb1a\xdb\x91~\xd5\x01"

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
SessionHash = "{random characters}"

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Sequence = "1"

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles0000 = "\x00\x00"

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFilesHash = "{random characters}"

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Owner = "\xf4\x0b\x00\x00\xbe\xa2\xe7\xe0\x91~\xd5\x01"

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\RegFilesHash

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\RegFiles0000

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\Sequence

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\SessionHash

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\Owner

Dropping Routine

This Adware drops the following files:

  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{74D48A0B-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\itdownload.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{34CFA7CD-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{4ADB8677-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions\en-US.6
  • %Program Files%\Transformation\406577164.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{86C90B3C-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\Evidament.exe.config
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{2A14A422-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\Evidament.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{98C711EF-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\idp.dll
  • %User Temp%\is-V98J8.tmp\DS_method_Biz_underst.pdf
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{68DCFF0B-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\_isetup\_isdecmp.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{8CC862CD-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{6ED5327B-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{7AD1803C-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\Ordalique.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{5B1A0A77-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{92C558FE-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{3EC50993-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{5B1A0A75-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\_isetup\_isdecmp.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{2A14A420-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\LAB_0_Python_basics_4BI_DM.ipynb
  • %Program Files%\Transformation\406577164.exe.config
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{9EC4081F-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\psvince.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{80CE766C-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{2A14A423-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{62DDA77A-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{5B1A0A76-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\MSIMGSIZ.DAT

(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Adware connects to the following possibly malicious URL:

  • http://go.{BLOCKED}oft.com
  • http://{BLOCKED}dcaster.com
  • http://api.{BLOCKED}g.com
  • http://www.{BLOCKED}g.com
  • http://pc.{BLOCKED}newsetup.com
  • http://sqm.{BLOCKED}try.microsoft.com
  • http://ieonline.{BLOCKED}oft.com

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Identify and terminate files detected as Adware.Win32.Csdimonetize.BB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • 2552555 = "%User Temp%\is-V98J8.tmp\Ordalique.exe /VERYSILENT"
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Owner = "D\x06\x00\x00[\xb1a\xdb\x91~\xd5\x01"
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • SessionHash = "{random characters}"
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Sequence = "1"
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000 = "\x00\x00"
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFilesHash = "{random characters}"
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Owner = "\xf4\x0b\x00\x00\xbe\xa2\xe7\xe0\x91~\xd5\x01"

Step 5

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{74D48A0B-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\itdownload.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{34CFA7CD-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{4ADB8677-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions\en-US.6
  • %Program Files%\Transformation\406577164.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{86C90B3C-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\Evidament.exe.config
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{2A14A422-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\Evidament.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{98C711EF-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\idp.dll
  • %User Temp%\is-V98J8.tmp\DS_method_Biz_underst.pdf
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{68DCFF0B-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\_isetup\_isdecmp.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{8CC862CD-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{6ED5327B-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{7AD1803C-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\Ordalique.exe
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{5B1A0A77-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{92C558FE-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{3EC50993-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{5B1A0A75-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\_isetup\_isdecmp.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{2A14A420-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-V98J8.tmp\LAB_0_Python_basics_4BI_DM.ipynb
  • %Program Files%\Transformation\406577164.exe.config
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{9EC4081F-EA85-11E9-A7E6-005056BC57E5}.dat
  • %User Temp%\is-VOELL.tmp\psvince.dll
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{80CE766C-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{2A14A423-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{62DDA77A-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active\{5B1A0A76-EA85-11E9-A7E6-005056BC57E5}.dat
  • %AppDataLocal%\Microsoft\Internet Explorer\MSIMGSIZ.DAT

Step 6

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Application Data%\Microsoft\Windows\IECompatUACache
  • %Application Data%\Microsoft\CLR Security Config\v2.0.50727.312\64bit
  • %Program Files%\Transformation
  • %Application Data%\Microsoft\CLR Security Config
  • %Application Data%\Microsoft\Windows\IECompatCache
  • %Application Data%\Microsoft\CLR Security Config\v2.0.50727.312
  • %User Profile%\AppData
  • %AppDataLocal%\Microsoft\Internet Explorer\DomainSuggestions
  • %System Root%\Users
  • %User Temp%\is-VOELL.tmp\_isetup
  • %AppDataLocal%\Microsoft\Internet Explorer\Recovery\High\Active
  • %Application Data%\Microsoft\Windows\DNTException
  • %User Temp%\is-V98J8.tmp\_isetup
  • %Application Data%\Microsoft\Windows\PrivacIE

Step 7

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Adware.Win32.Csdimonetize.BB. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 8

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %AppDataLocal%Low\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico

Step 9

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFilesHash
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Sequence
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • SessionHash
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Owner


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