What is “TrojanDropper:Win32/Sirefef.T”?

The TrojanDropper:Win32/Sirefef.T 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 TrojanDropper:Win32/Sirefef.T virus can do?

• Behavioural detection: Executable code extraction – unpacking
• Sample contains Overlay data
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Reads data out of its own binary image
• CAPE extracted potentially suspicious content
• The binary likely contains encrypted or compressed data.
• Removes Security and Maintenance icon from Start menu, Taskbar and notifications
• Authenticode signature is invalid
• Uses Windows utilities for basic functionality
• Behavioural detection: Injection (Process Hollowing)
• Behavioural detection: Injection (inter-process)
• Attempts to modify proxy settings
• Deletes executed files from disk
• Anomalous binary characteristics
• Attempts to modify user notification settings

How to determine TrojanDropper:Win32/Sirefef.T?

File Info:
name: CFF9B553E028DC283520.mlw
path: /opt/CAPEv2/storage/binaries/cc73d37055b8f67c86e4a8512762fc4f0ac6505d855e05996de6e1a42e9d77b4
crc32: 13622EFC
md5: cff9b553e028dc28352006f27c196e56
sha1: 0b91194c1c3dc71730d5bb078166c8a6748203b5
sha256: cc73d37055b8f67c86e4a8512762fc4f0ac6505d855e05996de6e1a42e9d77b4
sha512: 3554a4081ed8a6381846183ea68a7f3862511513205cd066ae4ebb63e020c11eb77d95472d87ca1f387fbb4ca764f367f68301553e165eb65fb2aca4ff77794c
ssdeep: 6144:Kfwzl1JD1NCrEbtYXb/AIc7Tg/V/zoJIGyxFq/Vl4J:OwLJDKrEebfDQ4J
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1F674B055A950C422D4E8077808B65AB4F73CA99E8F514BCB2704F76D3EB33D5353AA8C
sha3_384: 824f8088b12ea0d1877dcbdcbc0e15e20cfc743e09a0729d1c2bf7fc654f05dddfe27e71c0c23c0df27bf6f6ab07acf2
ep_bytes: 6a586829953200e8250000008b0000ff
timestamp: 2010-11-20 12:04:59

Version Info:
Comments: http://www.metaquotes.net
CompanyName: MetaQuotes Software Corp.
FileDescription: MetaTrader 4
FileVersion: 4.0.0.402
InternalName: MetaTrader 4
LegalCopyright: © 2001-2011, MetaQuotes Software Corp.
LegalTrademarks: MetaTrader®
OriginalFilename: LiveU.exe
PrivateBuild: 
ProductName: MetaTrader 4 Live
ProductVersion: 4.0.0.402
SpecialBuild: 
Translation: 0x0000 0x04b0

TrojanDropper:Win32/Sirefef.T also known as:

How to remove TrojanDropper:Win32/Sirefef.T?

• 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.