Arrival Details
This Trojan may be downloaded from remote site(s) by the following malware:
Installation
This Trojan drops the following copies of itself into the affected system:
- %User Startup%\seter64.jse
(Note: %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)
It drops the following files:
- %User Temp%\saymyname.txt
(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.)
Download Routine
This Trojan saves the files it downloads using the following names:
- %User Temp%\floor{random}.exe - detected as TROJ_OTLARD.TY
- %User Temp%\floor{random}.gop
Other Details
This Trojan connects to the following website to send and receive information:
- https://{BLOCKED}.{BLOCKED}.82.38:45000/C/pollos.php?add=e9e45de07d328e8d46adf4357840be5e&floor{random}&uid={value}&out={process id of executed downloaded file}&ver={version number}
It displays the following message boxes:
It does the following:
- Enumerates running processes
- Gets OS version
- Send running processes and OS to C&C
- Checks for these running processes:
Procmon
Wireshark
Tempiexplore.exe
ProcessHacker
vmtoolsd
VBoxService
python
Proxifier.exe
Johnson-PC
ImmunityDebugger.exe
lordPE.exe
ctfmon.exe
*JOHN-PC
BehaviorDumper
anti-virus.EXE
AgentSimulator.exe
VzService.exe
VmRemoteGuest - Malware creates %User Temp%\saymyname.txt when it cannot download %User Temp%\floor{random}.exe. %User Temp%\saymyname.txt contains list of files from removable and network drives with the following extensions:
.doc
.xls
.pdf
.rtf
.txt
.pub
.odt
.ods
.odp
.odm
.odc
.odb
.wps
.xlk
.ppt
.mdb
.accdb
.pst
.dwg
.dxf
.dxg
.wpd
.rtf
.wb2
.mdf
.dbf
.psd
.pdd
.eps
.ai
.indd
.cdr
.img_
.jpg
.dng
.3fr
.arw
.srf
.sr2
.bay
.crw
.cr2
.dcr
.kdc
.erf
.mef
.mrw
.nef
.nrw
.orf
.raf
.raw
.rwl
.rw2
.r3d - Executes %User Temp%\floor{random}.exe and if unsuccessful deletes all .exe, .gop, .txt, .log, .jse in the %User Temp% folder.
(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.)
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in Safe Mode
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To restart in Safe Mode:
• For Windows 2000 users
- Restart your computer.
- Press F8 when you see the Starting Windows bar at the bottom of the screen.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows XP users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Windows Advanced Options menu does not appear, try restarting then pressing F8 several times when the POST screen appears.
- Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.
• For Windows Server 2003 users
- Restart your computer.
- Press F8 after Windows starts up. If the Windows Advanced Options menu does not appear, try restarting again and pressing F8 several times afterward.
- On the Windows Advanced Option menu, use the arrow keys to select Safe Mode then press Enter.
• For Windows Vista, Windows 7, and Windows Server 2008 users
- Restart your computer.
- Press F8 after the Power-On Self Test (POST) routine is done. If the Advanced Boot Options menu does not appear, try restarting and then pressing F8 several times after the POST screen is displayed.
- On the Advanced Boot Options menu, use the arrow keys to select the Safe Mode option, and then press Enter.
• For Windows 8, Windows 8.1, and Windows Server 2012 users
- Access the Charms bar by moving your mouse pointer to the upper right corner of the screen.
- Move your mouse pointer down and click Settings>Change your PC Settings.
- In the left panel, click General.
- In the right panel, scroll down to the bottom to find the Advanced startup section, then click the Restart now button and wait for the system to restart.
- In the Advanced Startup menu, click Troubleshoot>Advanced Options>Startup Settings>Restart and wait for the system to restart.
- In the Startup Settings menu, press 4 to enable safe mode.
Step 4
Search and delete this file
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There may be some files 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.
- %User Startup%\seter64.jse
- %User Temp%\floor{random}.exe
- %User Temp%\floor{random}.gop
- %User Temp%\saymyname.txt
To manually delete a malware/grayware file from an affected system:
• For Windows 2000, Windows XP, and Windows Server 2003:
- Right-click Start then click Search....
- In the File name* input box, type the following:
- %User Startup%\seter64.jse
- %User Temp%\floor{random}.exe
- %User Temp%\floor{random}.gop
- %User Temp%\saymyname.txt
- In the Look In drop-down list, select My Computer then press Enter.
- Once located, select the file then press SHIFT+DELETE to delete it.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).
• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:
- Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
- In the Search Computer/This PC input box, type:
- %User Startup%\seter64.jse
- %User Temp%\floor{random}.exe
- %User Temp%\floor{random}.gop
- %User Temp%\saymyname.txt
- Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as JS_NEMUCOD.ELDSAUGH. 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 6
Scan your computer with your Trend Micro product to delete files detected as JS_NEMUCOD.ELDSAUGH. 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.
