Categories: Backdoor

Backdoor.Simda.AB removal instruction

The Backdoor.Simda.AB 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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Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.
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What Backdoor.Simda.AB virus can do?

  • Unconventionial language used in binary resources: Russian
  • The binary contains an unknown PE section name indicative of packing
  • Executable file is packed/obfuscated with Themida
  • Authenticode signature is invalid
  • Anomalous binary characteristics
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Backdoor.Simda.AB?


File Info:

name: 42F0C603348B28E0B133.mlwpath: /opt/CAPEv2/storage/binaries/aea6e14a191cfc16370569f29e7ae5b61ea090c161d1998f3bb2fd7f02574e71crc32: C5226EC0md5: 42f0c603348b28e0b13326d1c3a57637sha1: 95dbd083160388f9f3eef65bed0252dcca5eba24sha256: aea6e14a191cfc16370569f29e7ae5b61ea090c161d1998f3bb2fd7f02574e71sha512: 93af1ce2914ace18beefeb38b3641a3fe9c5179bf78a085f2c6f5b9c0b02fd0f5092db763007c4de5cd25ccc9e1c1e0d9771bf47622dde301b827b2dac77f06cssdeep: 98304:Thax1AJ4FAxBkPVwBI1pzWqMwrgMkO5kYlIX191gKWXlGEIb:QOwH5kYlIWVGtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1EAF6BEE1760AB1EFC54E1AB5995BCD43A87C07F443604802FC6DB8BDAF63E4211E6E58sha3_384: ecf6c579edf406ba0022a81dab382390ee2ee2858c9c60bddd875929befc47cdb16754051bf7fd384b40628fee528773ep_bytes: e8f0150000e978feffff8bff558bec8btimestamp: 2013-10-07 07:04:29

Version Info:

0: [No Data]

Backdoor.Simda.AB also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Simda.G!c
Elastic malicious (high confidence)
MicroWorld-eScan Backdoor.Simda.AB
CAT-QuickHeal Backdoor.Simda.9528
ALYac Backdoor.Simda.AB
Malwarebytes Malware.Heuristic.1003
Zillya Backdoor.Simda.Win32.2506
Sangfor Trojan.Win32.Save.a
K7AntiVirus Riskware ( 00584baa1 )
Alibaba Backdoor:Win32/Simda.8decbf5a
K7GW Riskware ( 00584baa1 )
CrowdStrike win/malicious_confidence_100% (D)
Baidu Win32.Trojan.Kryptik.agk
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 a variant of Win32/GenKryptik_AGen.AAU
APEX Malicious
Kaspersky Backdoor.Win32.Simda.abnq
BitDefender Backdoor.Simda.AB
NANO-Antivirus Trojan.Win32.Simda.cqivso
Avast Win32:CryptoWall-C [Trj]
Tencent Malware.Win32.Gencirc.11a2ca70
Emsisoft Backdoor.Simda.AB (B)
F-Secure Trojan.TR/Crypt.XPACK.Gen
DrWeb Trojan.Rodricter.80
VIPRE Backdoor.Simda.AB
TrendMicro TROJ_GEN.R002C0PEO23
McAfee-GW-Edition BehavesLike.Win32.Sdbot.wz
Trapmine malicious.high.ml.score
FireEye Generic.mg.42f0c603348b28e0
Sophos Generic ML PUA (PUA)
Ikarus Backdoor.Win32.Cidox
GData Backdoor.Simda.AB
Jiangmin Backdoor/Simda.ajk
Google Detected
Avira TR/Crypt.XPACK.Gen
MAX malware (ai score=82)
Antiy-AVL Trojan[Backdoor]/Win32.Simda
Arcabit Backdoor.Simda.AB
ZoneAlarm Backdoor.Win32.Simda.abnq
Microsoft Trojan:Win32/Wacatac.B!ml
Cynet Malicious (score: 100)
McAfee GenericRXFN-YQ!42F0C603348B
Cylance unsafe
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_GEN.R002C0PEO23
Rising Trojan.Kryptik!8.8 (TFE:1:6tHp0wYARnJ)
SentinelOne Static AI – Malicious PE
Fortinet W32/PossibleThreat
BitDefenderTheta Gen:NN.ZexaF.36196.@RW@aK7K0Fgk
AVG Win32:CryptoWall-C [Trj]
Cybereason malicious.3348b2
DeepInstinct MALICIOUS

How to remove Backdoor.Simda.AB?

  • 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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