Win32:Sirefef-LL [Trj] removal instruction

The Win32:Sirefef-LL [Trj] 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:Sirefef-LL [Trj] virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• Drops a binary and executes it
• Authenticode signature is invalid
• Behavioural detection: Injection (inter-process)
• CAPE detected the embedded win api malware family
• Attempts to disable Windows Auto Updates
• Anomalous binary characteristics
• Attempts to modify Explorer settings to prevent hidden files from being displayed
• Yara detections observed in process dumps, payloads or dropped files

How to determine Win32:Sirefef-LL [Trj]?

File Info:
name: 8CA66901FBBA3F0586D2.mlw
path: /opt/CAPEv2/storage/binaries/18546ba75ee831567982fd938878a4750258ee98de0a19d436653aefc2b74010
crc32: 8AEE3D86
md5: 8ca66901fbba3f0586d2abd4a0b97720
sha1: 0d647b269ef290e940fa74cddbb092c4528b4a01
sha256: 18546ba75ee831567982fd938878a4750258ee98de0a19d436653aefc2b74010
sha512: 59aefb2d12f7e3b8bc9e40b6b002c59694b65463b7cb5df0e94f23f289a7fc8bf15cf4cbc6b5b98de634c56bb95fcceae9209ac42f601257189773ea6b373ff9
ssdeep: 6144:wkmJtCNngeO+cwjfTfGHN1RWrOy9uJV10BK+baPe3ObUrlBXvgd7Vc7Ty:wkXNngeO+cwjfTfGHN1Ax9uJV10BK+b0
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T13F14C52EA360973AF452C6F51C6E4394042DAD3629C4E42BFBC26B5976F19F3D221363
sha3_384: b950420df5487bd69a727c6a97e33a1c4f02716573edc4497796f7755543c7e39794e084c052c8b330302aa4dd4beaf4
ep_bytes: 68543c4000e8eeffffff000000000000
timestamp: 2012-02-01 06:08:36

Version Info:
Translation: 0x0409 0x04b0
ProductName: WLdfyj
FileVersion: 1.00
ProductVersion: 1.00
InternalName: FiSiuA
OriginalFilename: FiSiuA.exe

Win32:Sirefef-LL [Trj] also known as:

How to remove Win32:Sirefef-LL [Trj]?

• 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.