Categories: Malware

Should I remove “Win32.Expiro.DF (B)”?

The Win32.Expiro.DF (B) 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.Expiro.DF (B) virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • At least one process apparently crashed during execution
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Anomalous file deletion behavior detected (10+)
  • A process attempted to delay the analysis task.
  • Dynamic (imported) function loading detected
  • CAPE extracted potentially suspicious content
  • Authenticode signature is invalid
  • Likely virus infection of existing system binary
  • Attempts to bypass application whitelisting by executing .NET utility in a suspended state, potentially for injection

How to determine Win32.Expiro.DF (B)?


File Info:

name: 4A66141FBB955778113F.mlwpath: /opt/CAPEv2/storage/binaries/f797377b5473f24e528eb923cee54be00427b5e0e9537000d279961ed66c9772crc32: F35B70F6md5: 4a66141fbb955778113fd2a50b757773sha1: 9873c035ecfabcf68aa3d000efe9f7d60fb505e2sha256: f797377b5473f24e528eb923cee54be00427b5e0e9537000d279961ed66c9772sha512: 95c14f774e880742701ee2001f5526fd4cf5367c1b5b659ac309f6ef77436fb08515a19f5a9ad9f3b375adfc5e6be3fb6217d4451445470c717a2cf22464a24fssdeep: 12288:rcFUPn7UMAdB8qr0zw9iXQ40AOzDr5YJjsF/5v3ZkHRik8X:rcFUP7atr0zAiX90z/F0jsFB3SQkUtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1A3551202728690B6F8F319B18A7C4C5A162DBE71239691DBB2C53E0F59F46D27D313A3sha3_384: 0a65b5f8b3fc7fb8a456d1febbd0893cfd60c49be9d36a4c89d946ce513c3e56398554598861e6fca3ede51b05414039ep_bytes: e8c39b0900e937fdffffcccc689d8440timestamp: 2019-09-11 06:08:52

Version Info:

CompanyName: Adobe SystemsFileDescription: Adobe Acrobat Update ServiceFileVersion: 1.824.35.0289InternalName: armsvc.exeLegalCopyright: Copyright © 2019 Adobe Systems. All rights reserved.OriginalFilename: armsvc.exeProductName: Adobe Acrobat Update ServiceProductVersion: 1.824.35.0289Translation: 0x0409 0x04b0

Win32.Expiro.DF (B) also known as:

Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Win32.Expiro.153
MicroWorld-eScan Win32.Expiro.DF
FireEye Generic.mg.4a66141fbb955778
ALYac Win32.Expiro.DF
BitDefender Win32.Expiro.DF
CrowdStrike win/malicious_confidence_60% (D)
Cyren W32/Expiro.AU.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Expiro.NDP
ClamAV Win.Trojan.Expiro-9937503-0
Kaspersky VHO:Trojan.Win32.Waldek.gen
NANO-Antivirus Virus.Win32.Virut-Gen.bwpxnc
Rising Trojan.Generic@AI.86 (RDML:wuPXs/RZQGTx6lKogUQfSw)
Ad-Aware Win32.Expiro.DF
Sophos ML/PE-A
Emsisoft Win32.Expiro.DF (B)
GData Win32.Trojan.BSE.1GDU6TF
MAX malware (ai score=87)
Antiy-AVL Trojan/Generic.ASVirus.316
Microsoft Trojan:Script/Phonzy.B!ml
Cynet Malicious (score: 100)
AhnLab-V3 Malware/Win.Malware-gen.R462219
VBA32 Trojan.Sabsik.TE
APEX Malicious
Ikarus Virus.Win32.Expiro
Fortinet W32/Expiro.NDO!tr
AVG Win32:FileInfector-C [Heur]
Avast Win32:FileInfector-C [Heur]

How to remove Win32.Expiro.DF (B)?

  • 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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