Trojan.Win32.Ekstak.amhxv (file analysis)

Malware Removal

The Trojan.Win32.Ekstak.amhxv 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.amhxv 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
  • Possible date expiration check, exits too soon after checking local time
  • Dynamic (imported) function loading detected
  • Reads data out of its own binary image
  • 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
  • Collects and encrypts information about the computer likely to send to C2 server
  • Creates a hidden or system file
  • Likely virus infection of existing system binary

How to determine Trojan.Win32.Ekstak.amhxv?

File Info:

name: 7B9C40654A4A21A5FE90.mlw
path: /opt/CAPEv2/storage/binaries/7bdada48b4d76498ef596f95da7cfbc5cf5a747a35520d70a58111ea2fbd186c
crc32: BE678A23
md5: 7b9c40654a4a21a5fe90b2a0ab332f72
sha1: 467ef357fab9d831edc35d9a0e51963bd8078f41
sha256: 7bdada48b4d76498ef596f95da7cfbc5cf5a747a35520d70a58111ea2fbd186c
sha512: 4566344ae896e73e7f9468de4abec937a2f1920042f818780fff8cc2087833788188495d45ecf23f7f1e77d6c39802ecac5edf1c1b38818989f09cd2792d3c47
ssdeep: 196608:WoZGoxbzDVCqKz3JAG1EOOXofWjtnYNId+ZqwaELEu:zGmHDsZD11MouHm/vj
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1D076330BE7990775C5D629F9E9D18FD55F026C07BE39012AB3847B1E4D3B1932AA8383
sha3_384: 9c696a1d3ea129bd6131d543a99a31cc0cd8ae4e061caf7a39758883d237d4eecafce6ea3060197b2cfe57ffffe2d96f
ep_bytes: 558bec83c4cc53565733c08945f08945
timestamp: 1992-06-19 22:22:17

Version Info:

Comments: This installation was built with Inno Setup.
CompanyName: Bisvik, LLC
FileDescription: Bisvik Disk Cleaner Free
Translation: 0x0409 0x04e4

Trojan.Win32.Ekstak.amhxv also known as:

Elasticmalicious (moderate confidence)
K7AntiVirusTrojan ( 005722f11 )
K7GWTrojan ( 005722f11 )
ESET-NOD32a variant of Win32/TrojanDropper.Agent.SLC
AvastWin32:Adware-gen [Adw]
EmsisoftTrojan.GenericKD.39842131 (B)
MAXmalware (ai score=87)
AVGWin32:Adware-gen [Adw]

How to remove Trojan.Win32.Ekstak.amhxv?

Trojan.Win32.Ekstak.amhxv 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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