Overview

overview

10

Static

static

10

2026-08-20...ry.exe

windows10-2004-x64

10

2026-08-20...ry.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-08-20_dffa3925b7ad6c98f44cb41b3f6e5588_coinminer_elex_wannacry
  • Size 241KB
  • Sample260820-262sysxbka
  • SHA256 e9e579161fda6a2c705eb8f06c03d26a7c09ca250e6527a8d93da85b795d9ffb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
cosmudiscoveryransomwareupxworm

Malware Config

Targets

    • Target
      2026-08-20_dffa3925b7ad6c98f44cb41b3f6e5588_coinminer_elex_wannacry
    • Size 241KB
    • SHA256 e9e579161fda6a2c705eb8f06c03d26a7c09ca250e6527a8d93da85b795d9ffb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoverycosmuransomwareupxworm

    • Detects Cosmu payload

      Cosmu is a worm written in C++.

    • Family: Cosmu

      Cosmu is a Windows worm written in C++.

      wormcosmu

    • Renames multiple (4877) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • UPX dump on OEP (original entry point)

    • Executes dropped EXE

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks