Categories: Trojan

Trojan:Win32/Smokeloader.GXZ!MTB (file analysis)

The Trojan:Win32/Smokeloader.GXZ!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/Smokeloader.GXZ!MTB virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution
  • Uses Windows utilities for basic functionality
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • Authenticode signature is invalid
  • Behavioural detection: Injection (Process Hollowing)
  • Behavioural detection: Injection (inter-process)
  • Behavioural detection: Injection with CreateRemoteThread in a remote process
  • CAPE detected the Tofsee malware family
  • Deletes executed files from disk
  • Attempts to interact with an Alternate Data Stream (ADS)
  • Anomalous binary characteristics
  • Uses suspicious command line tools or Windows utilities
  • Yara detections observed in process dumps, payloads or dropped files

How to determine Trojan:Win32/Smokeloader.GXZ!MTB?


File Info:

name: 86AF6A477A682ABAC7FC.mlwpath: /opt/CAPEv2/storage/binaries/f11daf489777837c5bd3d0f0c6b05116c82966e6ff0cf3d87fe6732af8bdded0crc32: 45630871md5: 86af6a477a682abac7fca50490c05ab8sha1: 013512c724076058a3512737339c9d0b0c018ff6sha256: f11daf489777837c5bd3d0f0c6b05116c82966e6ff0cf3d87fe6732af8bdded0sha512: 5ec10b3d51caea6162a7bcb7f8ca1db7996d1d20b7671fd98c83dbdc17a734d6aa6f71fcf29fa51ccd4b3395169941bbf055c79908c9572e1a4f6eafe6c88afcssdeep: 24576:5U7777777777777777777777777777777777777777777777777777777777777L:type: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T177D65B4131D1C847D8DB48318539B6A8A73BFCE1A46C4B63FD507B2F6936AB119313AEsha3_384: 4c8797153dee0512edb706652892d3d04f0d95d0315feb93e5b8e03ae87f52736aa3caf64cc45abae260cbbf96e3d913ep_bytes: e8492e0000e989feffff8bff558bec81timestamp: 2022-09-06 11:15:27

Version Info:

FileVersion: 12.3.3.493ProductVersion: 89.49.84.33InternalName: SlupidoCompanyName: TorchokTranslation: 0x149c 0x0235

Trojan:Win32/Smokeloader.GXZ!MTB also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Tofsee.m!c
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Malware.Heur.1.!copidmbe!.@t0@bKNGrAdi
FireEye Generic.mg.86af6a477a682aba
Cylance unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
K7GW Riskware ( 00584baa1 )
K7AntiVirus Riskware ( 00584baa1 )
BitDefenderTheta Gen:NN.ZexaF.36744.@t0@aKNGrAdi
Symantec ML.Attribute.HighConfidence
tehtris Generic.Malware
ESET-NOD32 a variant of Win32/Kryptik.HWLJ
APEX Malicious
Kaspersky HEUR:Backdoor.Win32.Tofsee.gen
BitDefender Gen:Malware.Heur.1.!copidmbe!.@t0@bKNGrAdi
Avast Win32:CrypterX-gen [Trj]
Rising Trojan.Generic@AI.100 (RDML:ZMnONOybLcn7WFzXB7gh/w)
Emsisoft Gen:Malware.Heur.1.!copidmbe!.@t0@bKNGrAdi (B)
DrWeb Trojan.DownLoader46.53347
VIPRE Gen:Malware.Heur.1.!copidmbe!.@t0@bKNGrAdi
TrendMicro Mal_Tofsee
Trapmine malicious.high.ml.score
Sophos Troj/Krypt-ADH
SentinelOne Static AI – Malicious PE
GData Gen:Malware.Heur.1.!copidmbe!.@t0@bKNGrAdi
Google Detected
Varist W32/Kryptik.LSL.gen!Eldorado
Arcabit Gen:Malware.Heur.1.!copidmbe!.ED3640
ZoneAlarm HEUR:Backdoor.Win32.Tofsee.gen
Microsoft Trojan:Win32/Smokeloader.GXZ!MTB
Cynet Malicious (score: 100)
AhnLab-V3 Malware/Win.AGEN.R637074
Acronis suspicious
MAX malware (ai score=83)
Malwarebytes Crypt.Trojan.Malicious.DDS
Panda Trj/GdSda.A
TrendMicro-HouseCall Mal_Tofsee
Tencent Trojan.Win32.Obfuscated.gen
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.HWLF!tr
AVG Win32:CrypterX-gen [Trj]
Cybereason malicious.724076
DeepInstinct MALICIOUS

How to remove Trojan:Win32/Smokeloader.GXZ!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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