Categories: Trojan

Trojan.Win32.Ekstak.alvoo (file analysis)

The Trojan.Win32.Ekstak.alvoo 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.alvoo virus can do?

  • Behavioural detection: Executable code extraction – unpacking
  • SetUnhandledExceptionFilter detected (possible anti-debug)
  • Yara rule detections observed from a process memory dump/dropped files/CAPE
  • Creates RWX memory
  • Dynamic (imported) function loading detected
  • 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
  • Uses Windows utilities for basic functionality
  • Behavioural detection: Transacted Hollowing
  • Likely virus infection of existing system binary

How to determine Trojan.Win32.Ekstak.alvoo?


File Info:

name: 81B675D40521FD1D2D5A.mlwpath: /opt/CAPEv2/storage/binaries/8af61ea3184f69994d74bbfe4b08587309fa1d91344ecb109818df5c2811e23bcrc32: C27B42B9md5: 81b675d40521fd1d2d5a4b70bab2a719sha1: 307007d9b2edfa0e8385de35987ba11064e31d21sha256: 8af61ea3184f69994d74bbfe4b08587309fa1d91344ecb109818df5c2811e23bsha512: ded77be628ff7c9c71eb36cdd7e5e41dcba49316fcdac3c37c980f3ddce908329aaef3713cce24db383fbbaebcbe02362ff00fe5b8305efb8080e481a325b010ssdeep: 196608:1HzrZ3zWCqIvERO+lP8IFJGVC7ODK5n6cP3jqgl3W8ADJRXWAV:pz1jMOtE5FJGVCKeRr7qglmrFtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T15C76336445C061BDE4D7F5B6AC60A1227D30BC0B2C27048BF9D97EB73E1A501BC7A99Bsha3_384: 08ce58fc52cce64e38ccf83790ddc8477b9705069e6199ee622dbaac9e500a03d5f71e6eb1031db8f1880db7b1019e86ep_bytes: 558bec83c4cc53565733c08945f08945timestamp: 1992-06-19 22:22:17

Version Info:

Comments: This installation was built with Inno Setup.CompanyName: LLC "SysDev Laboratories" FileDescription: Raise Data Recovery for Ext2/3/4 Setup FileVersion: LegalCopyright: Translation: 0x0409 0x04e4

Trojan.Win32.Ekstak.alvoo also known as:

MicroWorld-eScan Trojan.GenericKD.50163650
FireEye Trojan.GenericKD.50163650
ALYac Trojan.GenericKD.50163650
Malwarebytes Adware.DownloadAssistant
K7AntiVirus Trojan ( 005722fe1 )
K7GW Trojan ( 005722fe1 )
Symantec Trojan.Gen.2
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/TrojanDropper.Agent.SLC
TrendMicro-HouseCall TROJ_GEN.R002H0DCU22
Paloalto generic.ml
Kaspersky Trojan.Win32.Ekstak.alvoo
BitDefender Trojan.GenericKD.50163650
Avast Win32:Adware-gen [Adw]
Tencent Win32.Trojan-dropper.Agent.Eadi
Ad-Aware Trojan.GenericKD.50163650
Emsisoft Trojan.GenericKD.50163650 (B)
McAfee-GW-Edition BehavesLike.Win32.AdwareFileTour.vc
Sophos Mal/Generic-S
GData Win32.Backdoor.Bodelph.LD0BII
Jiangmin Trojan.Ekstak.bvud
MAX malware (ai score=85)
Arcabit Trojan.Generic.D2FD6FC2
Microsoft Trojan:Win32/Wacatac.B!ml
AhnLab-V3 Adware/Win.Adware-gen.R481330
McAfee Artemis!81B675D40521
Cylance Unsafe
Ikarus Trojan-Dropper.Win32.Agent
AVG Win32:Adware-gen [Adw]
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan.Win32.Ekstak.alvoo?

  • 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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