Malware

VirTool:Win32/AmsiTamper (file analysis)

Malware Removal

The VirTool:Win32/AmsiTamper 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 VirTool:Win32/AmsiTamper virus can do?

  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • CAPE extracted potentially suspicious content
  • The binary likely contains encrypted or compressed data.
  • Authenticode signature is invalid
  • Attempts to modify desktop wallpaper
  • Tries to unhook or modify Windows functions monitored by Cuckoo
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Installs itself for autorun at Windows startup

How to determine VirTool:Win32/AmsiTamper?


File Info:

name: 55698DB1CD3094347482.mlw
path: /opt/CAPEv2/storage/binaries/10d139b70564c40a6bbaf5e06dd8739c31cb4b2f901b17dff2f9f910c7a8161d
crc32: 35018BCD
md5: 55698db1cd30943474820f218735a842
sha1: 9e5d6d3fc095e2f4387ab895d707a882746b67cc
sha256: 10d139b70564c40a6bbaf5e06dd8739c31cb4b2f901b17dff2f9f910c7a8161d
sha512: 95266b432f52c1380030c8c462a40009732ae0bfcd8d822437ba06919d9dc3ab0ca9f9b17caaf50004ef6ee85e2a9e7b923eb232418910948218ce9fbbcfae53
ssdeep: 6144:4uwoSmUYAh47SPfyZEguKiS/B+4m/GZSzZbP5bZMjYXmH65drr/5A9v7kwV:4uw9mLaK/B+49qxbZMjY2OFegwV
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T16474F14276C16570EAB3193298799E925E7EFC681F15DD6F2388027E0F346C1C925E3B
sha3_384: 9b9188bd40fd4d4911c92962a9fca8ec13c2a45756da0f73a782cff7bc1e4d168921a74c10411cb03d6d48663fe7bbc0
ep_bytes: e8e1040000e97afeffff558bec6a00ff
timestamp: 2022-05-01 17:10:51

Version Info:

0: [No Data]

VirTool:Win32/AmsiTamper also known as:

BkavW32.AIDetect.malware2
LionicTrojan.Win32.Generic.4!c
Elasticmalicious (high confidence)
MicroWorld-eScanGen:Variant.Zusy.406521
FireEyeGeneric.mg.55698db1cd309434
McAfeeArtemis!55698DB1CD30
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 00581f931 )
AlibabaTrojan:MSIL/Injector.2be0d814
K7GWTrojan ( 00581f931 )
CrowdStrikewin/malicious_confidence_100% (W)
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Injector.VOF
APEXMalicious
Paloaltogeneric.ml
ClamAVWin.Malware.Bulz-9893328-0
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderGen:Variant.Zusy.406521
AvastWin32:TrojanX-gen [Trj]
TencentWin32.Trojan.Generic.Suxt
Ad-AwareGen:Variant.Zusy.406521
EmsisoftGen:Variant.Zusy.406521 (B)
F-SecureTrojan.TR/Dropper.MSIL.Gen
DrWebTrojan.Inject4.17628
McAfee-GW-EditionBehavesLike.Win32.Generic.fc
SophosMal/Generic-S
IkarusTrojan.MSIL.Injector
GDataGen:Variant.Zusy.406521
AviraTR/Dropper.MSIL.Gen
MAXmalware (ai score=82)
Antiy-AVLTrojan[Backdoor]/Win32.Bladabindi
ArcabitTrojan.Zusy.D633F9
ZoneAlarmHEUR:Trojan.Win32.Generic
MicrosoftVirTool:Win32/AmsiTamper
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win.Generic.C5123075
VBA32BScope.Trojan.InjectNET
ALYacGen:Variant.Zusy.406521
MalwarebytesTrojan.Crypt
TrendMicro-HouseCallTROJ_GEN.R002H0CE822
RisingTrojan.Generic!8.C3 (CLOUD)
SentinelOneStatic AI – Malicious PE
FortinetW32/PossibleThreat
BitDefenderThetaGen:NN.ZexaF.34666.vuW@a8R5Wyei
AVGWin32:TrojanX-gen [Trj]
Cybereasonmalicious.1cd309
PandaTrj/Genetic.gen

How to remove VirTool:Win32/AmsiTamper?

VirTool:Win32/AmsiTamper removal tool
  • 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.

About the author

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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