BKDR_BANITO.S
Backdoor:Win32/Banito (Microsoft); [00000c60.EXE]:BackDoor-CCL (McAfee); Backdoor.Tabdim (Symantec); Backdoor.Win32.Agent.lo (Kaspersky); Trojan.Win32.Generic!SB.0 (Sunbelt); Backdoor.Agent.LO (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
70,656 bytes
EXE
No
16 Jun 2012
Arrival Details
This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Other System Modifications
This backdoor deletes the following files:
- %Windows%\W32_SY~1.EXE
- %Windows%\W32_SY~1.BAT
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Dropping Routine
This backdoor drops the following files:
- %Windows%\w32_systm.exe
- %Windows%\w32_sysbm.bat
- {malware path and file name}
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Other Details
This backdoor deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.200
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
Search and delete these components
- %Windows%\w32_systm.exe
- %Windows%\w32_sysbm.bat
- {malware path and file name}
Step 3
Scan your computer with your Trend Micro product to delete files detected as BKDR_BANITO.S. 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 4
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.
- %Windows%\W32_SY~1.EXE
- %Windows%\W32_SY~1.BAT
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