Categories: Malware

About “Win32.Expiro.Gen.6 (B)” infection

The Win32.Expiro.Gen.6 (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.Gen.6 (B) virus can do?

  • Executable code extraction
  • At least one process apparently crashed during execution
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Expresses interest in specific running processes
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option
  • Drops a binary and executes it
  • The binary likely contains encrypted or compressed data.
  • Attempts to stop active services
  • Attempts to repeatedly call a single API many times in order to delay analysis time
  • Installs itself for autorun at Windows startup
  • Exhibits possible ransomware file modification behavior
  • Likely virus infection of existing system binary
  • Attempts to identify installed AV products by registry key
  • Checks the system manufacturer, likely for anti-virtualization
  • Attempts to disable Windows Defender
  • Attempts to modify or disable Security Center warnings
  • Attempts to modify user notification settings

How to determine Win32.Expiro.Gen.6 (B)?


File Info:

crc32: BCAEDD81md5: 0aa1df6b5075abfbdc34578081f62324name: 0AA1DF6B5075ABFBDC34578081F62324.mlwsha1: c4994b28a09d852ca4eb62f37fbea00b75f654b3sha256: 5deb09e412781dd2e4d5fd33029f976cfd0c3c1c4c5aaacc06f16ccc60e17af0sha512: f41748845a98299cc97733841653567f0489c949f89c0f52730752064c65958d0e156848178620182dd6daba6d3e0a9e9253d35551d40cc86775521496903ebessdeep: 12288:hU6S8/CwJTfeT8Q7remZTQo5Wo003g0AwHiHPKcMIk1W94:hU6S83MRremZTQo5Wo0B02+IeWtype: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.InternalName: cmdFileVersion: 6.1.7601.23403 (win7sp1_ldr.160325-0600)CompanyName: Microsoft CorporationProductName: Microsoftxae Windowsxae Operating SystemProductVersion: 6.1.7601.23403FileDescription: Windows Command ProcessorOriginalFilename: Cmd.ExeTranslation: 0x0409 0x04b0

Win32.Expiro.Gen.6 (B) also known as:

Bkav W32.AIDetect.malware2
K7AntiVirus Virus ( 00580a951 )
Elastic malicious (high confidence)
ClamAV Win.Virus.Xpiro-9850135-1
ALYac Win32.Expiro.Gen.6
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
BitDefender Win32.Expiro.Gen.6
K7GW Virus ( 00580a951 )
Cybereason malicious.b5075a
Cyren W32/Expiro.S.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Expiro.NDG
APEX Malicious
Cynet Malicious (score: 100)
NANO-Antivirus Virus.Win32.Gen.ccmw
MicroWorld-eScan Win32.Expiro.Gen.6
Ad-Aware Win32.Expiro.Gen.6
Sophos ML/PE-A + Mal/EncPk-MK
VIPRE Virus.Win32.Expiro.dp (v)
TrendMicro Virus.Win32.EXPIRO.AD
FireEye Generic.mg.0aa1df6b5075abfb
Emsisoft Win32.Expiro.Gen.6 (B)
SentinelOne Static AI – Malicious PE
Avira TR/Patched.Gen
Microsoft Trojan:Win32/Wacatac.B!ml
GData Win32.Expiro.Gen.6
Acronis suspicious
MAX malware (ai score=89)
VBA32 BScope.Trojan.Wacatac
TrendMicro-HouseCall Virus.Win32.EXPIRO.AD
Ikarus Virus.Win32.Expiro
Fortinet W32/Expiro.NDG!tr
Qihoo-360 HEUR/QVM20.1.2D3F.Malware.Gen

How to remove Win32.Expiro.Gen.6 (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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