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TSPY_BANCOS.XJOS

October 26, 2015
 PLATFORM:

Windows

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This spyware 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:

286,208 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

10 Oct 2015

Arrival Details

This spyware 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 spyware creates the following folders:

  • %User Profile%\Application Data\yakgaeprxbraaxnkm

(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 spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm10 = "0306"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm13 = "{random characters}"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm15 = "594445400B1E1E07091E0106031E0000071E00091F45425153515D595F1E595F5454491E415841"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm16 = "594445400B1E1E4151425F4144595040451E525F5D1F52421E5F43455556511E401E585E5555491F405940"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm32 = "{random characters}"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm33 = "{random characters}"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm17 = "594445400B1E1E0000081E0107071F0109081F06051E4E52545E455E0108021E5E461E4643431F454845"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm2 = "48515A57505441434852425150485F5B5C6C455B575540464458424249505C5743"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm7 = "48515A57505441434852425150485F5B5C6C54545E56535D5E5D42"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm1 = "48515A57505441434852425150485F5B5C6C58555B405256545B5043"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm3 = "48515A57505441434852425150485F5B5C6C4046525D5C4055585E455256495D59"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
lfi = "594445400B1E1E07091E0106031E0000071E00091F5F5F465E1F585F5454481F405941"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm9 = "48515A57505441434852425150485F5B5C6C475242405D5B5B5C5749405D525A451F544854"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm11 = "48515A57505441434852425150485F5B5C"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm18 = "0208"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm19 = "0208"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm20 = "585E4555435F5445105548405D5F435543"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm21 = "46595F545E4642115D5554595010415C50495442"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm22 = "585549405D5E43541E554855"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm23 = "465D415C504854431E554855"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm24 = "081E00"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm34 = "091E091E091F09"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm26 = "594445400B1E1E4151425F4144595040451E525F5D1F52421E5F43455556511E5C1E585E5555491F405940"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm28 = "594445400B1E1E07041E03011F01081E08081E445D411F5350435052011F444944"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm29 = "594445400B1E1E07041E03011F01081E08081E445D411F5350435052021F444944"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm30 = "594445400B1E1E07041E03011F01081E08081E445D411F5350435052591F444944"

HKEY_CURRENT_USER\Software\Adobe\
Acrobat Reader\DC\FlashDebug
nm31 = "594445400B1E1E07041E03011F01081E08081E445D411F53504350525D1F444944"

Other Details

This spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}19.98/tmp/casap.txt
  • http://{BLOCKED}19.98/tmp/casau.txt
  • http://{BLOCKED}19.98/tmp/casal.txt
  • http://{BLOCKED}19.98/tmp/casas.txt
  • {BLOCKED}0.1

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

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

[ 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\Adobe\Acrobat Reader\DC
    • FlashDebug

Step 3

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\Adobe\Acrobat Reader\DC\FlashDebug
    • nm10 = "0306"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm13 = "{random characters}"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm15 = "594445400B1E1E07091E0106031E0000071E00091F45425153515D595F1E595F5454491E415841"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm16 = "594445400B1E1E4151425F4144595040451E525F5D1F52421E5F43455556511E401E585E5555491F405940"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm32 = "{random characters}"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm33 = "{random characters}"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm17 = "594445400B1E1E0000081E0107071F0109081F06051E4E52545E455E0108021E5E461E4643431F454845"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm2 = "48515A57505441434852425150485F5B5C6C455B575540464458424249505C5743"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm7 = "48515A57505441434852425150485F5B5C6C54545E56535D5E5D42"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm1 = "48515A57505441434852425150485F5B5C6C58555B405256545B5043"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm3 = "48515A57505441434852425150485F5B5C6C4046525D5C4055585E455256495D59"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • lfi = "594445400B1E1E07091E0106031E0000071E00091F5F5F465E1F585F5454481F405941"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm9 = "48515A57505441434852425150485F5B5C6C475242405D5B5B5C5749405D525A451F544854"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm11 = "48515A57505441434852425150485F5B5C"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm18 = "0208"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm19 = "0208"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm20 = "585E4555435F5445105548405D5F435543"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm21 = "46595F545E4642115D5554595010415C50495442"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm22 = "585549405D5E43541E554855"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm23 = "465D415C504854431E554855"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm24 = "081E00"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm34 = "091E091E091F09"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm26 = "594445400B1E1E4151425F4144595040451E525F5D1F52421E5F43455556511E5C1E585E5555491F405940"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm28 = "594445400B1E1E07041E03011F01081E08081E445D411F5350435052011F444944"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm29 = "594445400B1E1E07041E03011F01081E08081E445D411F5350435052021F444944"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm30 = "594445400B1E1E07041E03011F01081E08081E445D411F5350435052591F444944"
  • In HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FlashDebug
    • nm31 = "594445400B1E1E07041E03011F01081E08081E445D411F53504350525D1F444944"

Step 4

Search and delete this folder

[ 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.
  • %User Profile%\Application Data\yakgaeprxbraaxnkm

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_BANCOS.XJOS. 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.


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