Categories: Trojan

How to remove “Trojan:Win32/FormBook.AN!MTB”?

The Trojan:Win32/FormBook.AN!MTB 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 Trojan:Win32/FormBook.AN!MTB virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Behavioural detection: Executable code extraction – unpacking
  • Sample contains Overlay data
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • A process created a hidden window
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Uses Windows utilities for basic functionality
  • Uses Windows utilities for basic functionality
  • Attempts to modify desktop wallpaper
  • Behavioural detection: Injection (inter-process)
  • Created a process from a suspicious location
  • CAPE detected the Formbook malware family
  • Deletes executed files from disk
  • Uses suspicious command line tools or Windows utilities

How to determine Trojan:Win32/FormBook.AN!MTB?


File Info:

name: 8B500976FC28F7358EBA.mlwpath: /opt/CAPEv2/storage/binaries/053166ff37507398e22d75b5ad58dc5a3732e670c3f86a7e328b489e3675fee4crc32: 112BED99md5: 8b500976fc28f7358eba1853ca01bd99sha1: 6413f0dd964d5c92e84ccb4b4d55ddc46aeac278sha256: 053166ff37507398e22d75b5ad58dc5a3732e670c3f86a7e328b489e3675fee4sha512: 4ffbb10a7bb93645cbda7be060eb90b0ca60277d9a8e09e4ed78f6a04c3ceb8c7242230eb4ff59929d47a654fbfa48bac93794cd2e3cfebcef6d3f2adc71d84cssdeep: 6144:nw82uaAJScHj0N86PEN1Jc6bbi/smvB7Lumz9+ZKG2l3eGy+0tt1OSkTJZRN:281JNmvB7qw/uGy+0tTOSEzRNtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T19EA406852006B769D6550B71BB9AD00E4F7B58BAAAC2850F32D57EFE77AC00DD34312Bsha3_384: 8e7324c2a80c40300786ab8f5cf7ad2547333c29e0aad69b0b49b2281ee3f360bc3067cae56332f4015fd3adccc51ac4ep_bytes: 81ec8001000053555633db57895c2418timestamp: 2008-10-10 21:48:57

Version Info:

0: [No Data]

Trojan:Win32/FormBook.AN!MTB also known as:

Bkav W32.AIDetect.malware2
Lionic Trojan.Multi.GenericML.4!c
MicroWorld-eScan Dropped:Generic.NSIS.Injector.A.497020EE
FireEye Dropped:Generic.NSIS.Injector.A.497020EE
CAT-QuickHeal Trojan.TnegaPMF.S26660187
McAfee RDN/Generic.grp
Cylance Unsafe
Zillya Trojan.Noon.Win32.22773
Sangfor Trojan.Win32.Noon.gen
K7AntiVirus Riskware ( 0040eff71 )
Alibaba TrojanSpy:Win32/SpyNoon.a2d2c403
K7GW Riskware ( 0040eff71 )
CrowdStrike win/malicious_confidence_100% (W)
BitDefenderTheta Gen:NN.ZexaF.34806.huW@aWmUHuii
Cyren W32/Kryptik.GEH.gen!Eldorado
Symantec Trojan.Gen.MBT
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Injector.ERCD
TrendMicro-HouseCall TROJ_GEN.R002C0DBD22
Paloalto generic.ml
ClamAV Win.Trojan.Noon-9939287-0
Kaspersky HEUR:Trojan.Win32.Formbook.gen
BitDefender Dropped:Generic.NSIS.Injector.A.497020EE
NANO-Antivirus Virus.Win32.Gen.ccmw
APEX Malicious
Tencent Win32.Trojan-spy.Noon.Ebqm
Ad-Aware Dropped:Generic.NSIS.Injector.A.497020EE
Emsisoft Dropped:Generic.NSIS.Injector.A.497020EE (B)
Comodo Malware@#2gomyy7bi5t61
DrWeb Trojan.Siggen16.42348
VIPRE Dropped:Generic.NSIS.Injector.A.497020EE
TrendMicro TROJ_GEN.R002C0DBD22
McAfee-GW-Edition RDN/Generic.grp
Sophos Mal/Generic-S
Ikarus Trojan-Spy.Agent
GData Win32.Trojan.Kryptik.SP
Jiangmin Trojan.Multi.hiv
Webroot W32.Trojan.Multi.GenML.xnet
Avira TR/AD.Swotter.uznbv
MAX malware (ai score=85)
Antiy-AVL Trojan/Generic.ASMalwS.56CE
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/FormBook.AN!MTB
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win.Generic.R472593
VBA32 Trojan.Sabsik.FL
ALYac Dropped:Generic.NSIS.Injector.A.497020EE
Malwarebytes Trojan.Injector
Avast Win32:PWSX-gen [Trj]
Rising Trojan.Generic@AI.84 (RDMK:Pf/No4Y4Hqg4uQEchoDKXA)
Yandex Trojan.Injector!7A/1c9FSdKk
SentinelOne Static AI – Suspicious PE
Fortinet W32/Kryptik.GMVH!tr
AVG Win32:PWSX-gen [Trj]
Cybereason malicious.d964d5
Panda Trj/CI.A

How to remove Trojan:Win32/FormBook.AN!MTB?

  • 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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