Categories: Worm

Worm:Win32/Mothyfil.A (file analysis)

The Worm:Win32/Mothyfil.A 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 Worm:Win32/Mothyfil.A virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • CAPE extracted potentially suspicious content
  • Unconventionial language used in binary resources: Farsi
  • Authenticode signature is invalid

How to determine Worm:Win32/Mothyfil.A?


File Info:

name: 53268C87541A4023801A.mlwpath: /opt/CAPEv2/storage/binaries/bdb12302c3c9fc6d69b4ae2fc63103167404c750e0c610b9e2dc3c957099dc90crc32: 99BFC39Dmd5: 53268c87541a4023801a949f7b8ebbc5sha1: 0b7d15aa63f63924ce406b9e3de8a527e5e70a02sha256: bdb12302c3c9fc6d69b4ae2fc63103167404c750e0c610b9e2dc3c957099dc90sha512: c4295df978f8e57d6cd53f4ead7234b629a77a7adbf3090dc2f04da165bbb86fbe33c6f91c0b832feacd2b900fac202978d592730329d7cd12170c1c089cf805ssdeep: 6144:wr/Ao/nTiDSA5ZXc3w8yIuAElnJ8sYCx9AFT6pkx7QSs:wX/nTmGE4U6FTjQtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T11764F713A610B01BF163C9F12D3991AA392A3D750680AC5BB781BF5D6935A93F8F131Fsha3_384: 979dee38c034c498c18c7d5ddff0360d1be4361528384d6604459f535cfa1151e254b94a5bc1f7b1d8977e7a8f5eba88ep_bytes: 68b0374000e8eeffffff000000000000timestamp: 2009-03-14 13:49:20

Version Info:

Translation: 0x0409 0x04b0ProductName: Project1FileVersion: 1.00ProductVersion: 1.00InternalName: k22OriginalFilename: k22.exe

Worm:Win32/Mothyfil.A also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Siggen.36713
MicroWorld-eScan Gen:Variant.Razy.368577
FireEye Generic.mg.53268c87541a4023
McAfee GenericRXAA-FA!53268C87541A
Malwarebytes Malware.Heuristic.1001
VIPRE Gen:Variant.Razy.368577
Sangfor Suspicious.Win32.Save.vb
K7AntiVirus Riskware ( 0040eff71 )
K7GW Riskware ( 0040eff71 )
CrowdStrike win/malicious_confidence_100% (W)
BitDefenderTheta AI:Packer.9BECA70F20
VirIT Trojan.Win32.Generic.DROPPER
Cyren W32/A-faf921fd!Eldorado
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 a variant of Win32/VB.OID
APEX Malicious
TrendMicro-HouseCall PAK_Otorun8
ClamAV Win.Dropper.Bancos-9859520-0
Kaspersky Trojan.Win32.VB.dkhu
BitDefender Gen:Variant.Razy.368577
NANO-Antivirus Virus.Win32.Virut-Gen.bwpxnc
SUPERAntiSpyware Trojan.Agent/Gen-FraudBot
Avast Win32:Malware-gen
Ad-Aware Gen:Variant.Razy.368577
Emsisoft Gen:Variant.Razy.368577 (B)
Comodo Virus.Win32.Virut.Ce@1fy3nv
Baidu Win32.Trojan.VB.ar
Zillya Worm.AutoRun.Win32.65956
TrendMicro PAK_Otorun8
McAfee-GW-Edition BehavesLike.Win32.VBObfus.fm
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Mal/VB-MW
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Banker.Bancos.ijq
Google Detected
Avira TR/Dropper.Gen
MAX malware (ai score=86)
Antiy-AVL Trojan/Generic.ASMalwS.281
Kingsoft Win32.HeurC.KVM006.a.(kcloud)
Microsoft Worm:Win32/Mothyfil.A
GData Gen:Variant.Razy.368577
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Agent.286720.FX
VBA32 BScope.Trojan.Wacatac
Cylance Unsafe
Rising Trojan.Agent!1.9D4E (CLASSIC)
Yandex Trojan.GenAsa!PQQcg/kvoCw
Ikarus Trojan-Banker.Win32.Bancos
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/VB.OFA!tr
AVG Win32:Malware-gen
Cybereason malicious.7541a4
Panda Trj/Genetic.gen

How to remove Worm:Win32/Mothyfil.A?

  • 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.
Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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Paul Valéry

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