Categories: Trojan

About “Trojan:Win32/Ekstak.ASEF!MTB” infection

The Trojan:Win32/Ekstak.ASEF!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/Ekstak.ASEF!MTB virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • Sample contains Overlay data
  • Reads data out of its own binary image
  • CAPE extracted potentially suspicious content
  • Drops a binary and executes it
  • The binary contains an unknown PE section name indicative of packing
  • Authenticode signature is invalid
  • CAPE detected the embedded win api malware family
  • Created a service that was not started
  • Yara rule detections observed from a process memory dump/dropped files/CAPE

How to determine Trojan:Win32/Ekstak.ASEF!MTB?


File Info:

name: C3CA22A9871B6FDFA3D3.mlwpath: /opt/CAPEv2/storage/binaries/d169dff7a67aa0f011f79deef57782998ffea6c047ee293ef91dd548b8e88cafcrc32: B571AAFCmd5: c3ca22a9871b6fdfa3d3628fa758ff55sha1: 46d200b401e705e1b8e8605afa385d802c3d9d33sha256: d169dff7a67aa0f011f79deef57782998ffea6c047ee293ef91dd548b8e88cafsha512: 0e60c46b0f234aa564968a14a02313dc6c5f4429e1ff86c86587355e70b8dd39065bb5ae43af0e904a6d21e086caff5dcd15226b5762319d1b5766d52875b0b3ssdeep: 196608:67wJQ2yyOPl+PNSd4Dnt8V5iNg+ATGFuuTyfcF4Par4dD:67wJQ24l+lKMt8V0mauJBdDtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1B87633525BE76F31E8448232CA732F92AF7D3052A57124D4EFAE3E1D5B9D2D008B7606sha3_384: 6ef8e601b9710f276e2efc8f87204d6ffca421da16eb670a581666eb144391f4ce928985e5b8032bef6ff8d3860bcc74ep_bytes: 558bec83c4c453565733c08945f08945timestamp: 2023-12-22 20:07:46

Version Info:

Comments: This installation was built with Inno Setup.CompanyName: FileDescription: BITResorator Setup FileVersion: LegalCopyright: ProductName: BITResorator ProductVersion: 1.2.2.2 Translation: 0x0000 0x04b0

Trojan:Win32/Ekstak.ASEF!MTB also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Ekstak.4!c
Skyhigh BehavesLike.Win32.ObfuscatedPoly.wc
McAfee Artemis!C3CA22A9871B
Malwarebytes Malware.AI.3813865295
Zillya Trojan.Ekstak.Win32.76342
Sangfor Dropper.Win32.Ekstak.Vlss
K7AntiVirus Trojan ( 005722f11 )
K7GW Trojan ( 005722f11 )
CrowdStrike win/malicious_confidence_100% (W)
Symantec Trojan.Gen.MBT
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/TrojanDropper.Agent.SLC
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan.Win32.Ekstak.asqqd
NANO-Antivirus Trojan.Win32.Ekstak.kgpisg
ViRobot Trojan.Win.Z.Ekstak.7427678.G
F-Secure Trojan.TR/Drop.Agent.fuvat
DrWeb Trojan.Siggen22.48699
TrendMicro TROJ_GEN.R002C0DAE24
Sophos Mal/Generic-S
GData Win32.Trojan.Agent.NCUGUY
Varist W32/Agent.NFDP-7001
Avira TR/Drop.Agent.fuvat
Kingsoft Win32.Trojan.Ekstak.asqqd
ZoneAlarm Trojan.Win32.Ekstak.asqqd
Microsoft Trojan:Win32/Ekstak.ASEF!MTB
AhnLab-V3 Trojan/Win.Malware-gen.R628849
DeepInstinct MALICIOUS
Cylance unsafe
Panda Trj/Chgt.AD
TrendMicro-HouseCall TROJ_GEN.R002C0DAE24
Tencent Win32.Trojan.Ekstak.Rimw
Yandex Trojan.Ekstak!5hkQoGKY0mo
Ikarus Trojan.Win32.Crypt
MaxSecure Trojan.Malware.221765182.susgen
Fortinet W32/Agent.SLC!tr
AVG Other:Malware-gen [Trj]
Avast Other:Malware-gen [Trj]

How to remove Trojan:Win32/Ekstak.ASEF!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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