Categories: Trojan

Trojan:Win32/Ekstak.ASEF!MTB (file analysis)

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: A6CBF23EABD68CE983F4.mlwpath: /opt/CAPEv2/storage/binaries/40089e07f927eef627c78d71ab49f3c5ce56478d3f833a6be511a12cb417f19acrc32: 65FF98ACmd5: a6cbf23eabd68ce983f452a897c3e346sha1: cbee8d7614d431b8b45bfb8c190040008e97634bsha256: 40089e07f927eef627c78d71ab49f3c5ce56478d3f833a6be511a12cb417f19asha512: 7b404330b8c36e0da631b74ab0eacc626e707e31586039c6d0971ef1c348b03a4f892c08a8c0209bec8919e672cdac98c7b53f0c86c382fd618d86c45a79f1a1ssdeep: 196608:E7wJQ2yyOPl+PNSd4Dnt8V5iNg+ATGFuuTyfcF4Par4dD:E7wJQ24l+lKMt8V0mauJBdDtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1627633525BE76F31E8448232CA732F92AF7D3052A57124D4EFAE3E1D5B9D2D008B7606sha3_384: f1331d94c565ab130db8d6da72fcbcfa64d110a7cc6202874f2134b3ae5eedcaa78dd4a2c6bbf2e71dec8063169d642aep_bytes: 558bec83c4c453565733c08945f08945timestamp: 2023-12-22 16:26:04

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
Elastic malicious (high confidence)
DrWeb Trojan.Siggen22.48699
Skyhigh BehavesLike.Win32.ObfuscatedPoly.wc
Cylance unsafe
Zillya Trojan.Ekstak.Win32.76342
Sangfor Dropper.Win32.Ekstak.Vehm
K7AntiVirus Trojan ( 005722f11 )
K7GW Trojan ( 005722f11 )
CrowdStrike win/malicious_confidence_100% (W)
Symantec Trojan.Gen.MBT
ESET-NOD32 a variant of Win32/TrojanDropper.Agent.SLC
Cynet Malicious (score: 100)
APEX Malicious
Kaspersky Trojan.Win32.Ekstak.asoxc
Avast Other:Malware-gen [Trj]
Tencent Win32.Trojan.Ekstak.Umhl
F-Secure Trojan.TR/Drop.Agent.zfkxl
TrendMicro TROJ_GEN.R002C0DAE24
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Varist W32/Agent.NFDP-7001
Avira TR/Drop.Agent.zfkxl
Kingsoft Win32.Trojan.Ekstak.asoxc
Microsoft Trojan:Win32/Ekstak.ASEF!MTB
ViRobot Trojan.Win.Z.Ekstak.7427678.A
ZoneAlarm Trojan.Win32.Ekstak.asoxc
GData Win32.Trojan.Agent.HRT9UA
AhnLab-V3 Trojan/Win.Malware-gen.R628849
McAfee Artemis!A6CBF23EABD6
Malwarebytes Malware.AI.3813865295
Panda Trj/Chgt.AD
TrendMicro-HouseCall TROJ_GEN.R002C0DAE24
Yandex Trojan.Ekstak!5hkQoGKY0mo
MaxSecure Trojan.Malware.221765605.susgen
Fortinet W32/Agent.SLC!tr
AVG 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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