How to remove “Win32/Slenfbot.AD”?

The Win32/Slenfbot.AD is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Win32/Slenfbot.AD virus can do?

• Behavioural detection: Executable code extraction – unpacking
• SetUnhandledExceptionFilter detected (possible anti-debug)
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Presents an Authenticode digital signature
• Creates RWX memory
• Possible date expiration check, exits too soon after checking local time
• Anomalous file deletion behavior detected (10+)
• A process attempted to delay the analysis task.
• Dynamic (imported) function loading detected
• Enumerates running processes
• Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
• A process created a hidden window
• CAPE extracted potentially suspicious content
• Unconventionial language used in binary resources: Russian
• The binary contains an unknown PE section name indicative of packing
• The binary likely contains encrypted or compressed data.
• The executable is compressed using UPX
• Authenticode signature is invalid
• Deletes its original binary from disk
• Checks for the presence of known windows from debuggers and forensic tools
• Likely virus infection of existing system binary
• Attempts to identify installed analysis tools by a known file location
• Checks the presence of disk drives in the registry, possibly for anti-virtualization
• Creates a copy of itself

How to determine Win32/Slenfbot.AD?

File Info:
name: 7D0BBC72F7034E9922E7.mlw
path: /opt/CAPEv2/storage/binaries/4e5974847f34013583f88503f431d9c40c0ae3c006e4dec41570c0ca2f15b124
crc32: 277C6F37
md5: 7d0bbc72f7034e9922e795af8e70cb7f
sha1: f7a6a8291855bf07ecaceede2aeaec10394c6861
sha256: 4e5974847f34013583f88503f431d9c40c0ae3c006e4dec41570c0ca2f15b124
sha512: 13b5e7a5a1e11f90fc748335e149cdb17cee8f12a005bc51cf6a76f23cedd1981023b031f5ce54e4f8cf94963d57f81784ae20c67fd5ee27ac2768172cf06c02
ssdeep: 6144:Wb1xfynbC6cWuHvGMHtUCwZGH2w01MNaHt9JXhd:W1hbGkvGMNBwL1THt9Td
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11C1412020BBDD488EC9A1E34289ED4A2D870F5D88CBDEB5634774362DCF7AF52606749
sha3_384: 8388ad6718c17a6002ec9c51535cf9bdd37a605fce43ccef08aee4319ac9a1513f183fa1dfb9bc028f1247e4808c978a
ep_bytes: 60be00f044008dbe0020fbff5783cdff
timestamp: 2004-03-21 13:31:54

Version Info:
CompanyName: AVG Technologies CZ, s.r.o.
FileDescription: AVG Tray Monitor
FileVersion: 9.0.0.871
InternalName: avgtray
LegalCopyright: Copyright © 2010 AVG Technologies CZ, s.r.o.
OriginalFilename: avgtray.exe
ProductName: AVG Internet Security
ProductVersion: 9.0.0.871
PrivateBuild: Win32 Release_Unicode
SpecialBuild: Avg8VC8_2010_1109_133319(871), SVNRev 145063 (/branches/release/SmallUpdate9-12)
Translation: 0x0409 0x04e4

Win32/Slenfbot.AD also known as:

How to remove Win32/Slenfbot.AD?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.