TROJ_OTOIT.PNFH
TrojanSpy:MSIL/Golroted.B (Microsoft); HEUR:Trojan.Win32.Generic (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Autoit_c.CBYR (AVG)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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
1,455,279 bytes
EXE
No
12 Jul 2015
Arrival Details
This Trojan 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 Trojan creates the following folders:
- %User Profile%\Network\Downloader
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Other System Modifications
This Trojan deletes the following files:
- %User Profile%\10.0\ReaderMessages-journal
- %Application Data%\Adobe\Acrobat\10.0\SharedDataEvents-journal
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It adds the following registry keys:
HKEY_CURRENT_USER\Software\Adobe\
Adobe Acrobat\10.0
HKEY_CURRENT_USER\Software\Adobe\
Adobe Synchronizer\10.0
HKEY_LOCAL_MACHINE\System\Acrobatbrokerserverdispatchercpp789
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\Installer\
Migrated
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\Originals
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\AVGeneral
HKEY_LOCAL_MACHINE\Software\Adobe\
Acrobat Reader\10.0\AdobeViewer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS\CtlGuid
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\BITS
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\Installer\
Migrated
{AC76BA86-7AD7-1033-7B44-AA0000000001} = "1"
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\Originals
bDisplayedSplash = "1"
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\AVGeneral
bLastExitNormal = "0"
HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\
Acrobat Reader\10.0\AdobeViewer
EULA = "1"
HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\10.0\AdobeViewer
EULA = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS
LogSessionName = "stdout"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS
Active = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS
ControlFlags = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS\CtlGuid
Guid = "4a8aaa94-cfc4-46a7-8e4e-17bc45608f0a"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\BITS\CtlGuid
BitNames = "{random characters}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\BackupRestore\FilesNotToBackup
BITS_metadata = "%User Profile%\Downloader\*"
Dropping Routine
This Trojan drops the following files:
- %User Temp%\flOBAQQll
- %Application Data%\Adobe\Color\ACECache11.lst
- %Application Data%\Adobe\Acrobat\10.0\UserCache.bin
- %User Temp%\Temporary Internet Files
- %User Temp%\Temporary Internet Files\Content.IE5
- %User Temp%\Temporary Internet Files\Content.IE5\6XV52X7V
- %User Temp%\Temporary Internet Files\Content.IE5\ITOBA1OZ
- %User Temp%\Temporary Internet Files\Content.IE5\FH9K0R6E
- %User Temp%\Temporary Internet Files\Content.IE5\YVINABQN
- %User Temp%\Cookies
- %User Temp%\History
- %User Temp%\History\History.IE5
- %User Temp%\ArmUI.ini
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://acroipm.{BLOCKED}e.com/10/rdr/ENU/win/nooem/none/message.zip
- {BLOCKED}0.1
This report is generated via an automated analysis system.
SOLUTION
9.750
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Delete this registry key
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\Adobe\Adobe Acrobat
- 10.0
- In HKEY_CURRENT_USER\Software\Adobe\Adobe Synchronizer
- 10.0
- In HKEY_LOCAL_MACHINE\System
- Acrobatbrokerserverdispatchercpp789
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\Installer
- Migrated
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0
- Originals
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0
- AVGeneral
- In HKEY_LOCAL_MACHINE\Software\Adobe\Acrobat Reader\10.0
- AdobeViewer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft
- BITS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\BITS
- CtlGuid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
- BITS
Step 3
Delete this registry value
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\Adobe\Acrobat Reader\10.0\Installer\Migrated
- {AC76BA86-7AD7-1033-7B44-AA0000000001} = "1"
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\Originals
- bDisplayedSplash = "1"
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\AVGeneral
- bLastExitNormal = "0"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat Reader\10.0\AdobeViewer
- EULA = "1"
- In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\10.0\AdobeViewer
- EULA = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\BITS
- LogSessionName = "stdout"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\BITS
- Active = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\BITS
- ControlFlags = "1"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\BITS\CtlGuid
- Guid = "4a8aaa94-cfc4-46a7-8e4e-17bc45608f0a"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\BITS\CtlGuid
- BitNames = "{random characters}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\BackupRestore\FilesNotToBackup
- BITS_metadata = "%User Profile%\Downloader\*"
Step 4
Search and delete these components
- %User Temp%\flOBAQQll
- %Application Data%\Adobe\Color\ACECache11.lst
- %Application Data%\Adobe\Acrobat\10.0\UserCache.bin
- %User Temp%\Temporary Internet Files
- %User Temp%\Temporary Internet Files\Content.IE5
- %User Temp%\Temporary Internet Files\Content.IE5\6XV52X7V
- %User Temp%\Temporary Internet Files\Content.IE5\ITOBA1OZ
- %User Temp%\Temporary Internet Files\Content.IE5\FH9K0R6E
- %User Temp%\Temporary Internet Files\Content.IE5\YVINABQN
- %User Temp%\Cookies
- %User Temp%\History
- %User Temp%\History\History.IE5
- %User Temp%\ArmUI.ini
Step 5
Search and delete this folder
- %User Profile%\Network\Downloader
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_OTOIT.PNFH. 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 7
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.
- %User Profile%\10.0\ReaderMessages-journal
- %Application Data%\Adobe\Acrobat\10.0\SharedDataEvents-journal
Did this description help? Tell us how we did.