Overview

overview

10

Static

static

10

2026-08-02...ry.exe

windows10-2004-x64

10

2026-08-02...ry.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-08-02_4ecba594d84e9f89cfa3c47a09927768_cobalt-strike_elex_vidar_wannacry
  • Size 81KB
  • Sample260802-km899aygma
  • SHA256 42b75fdb44037936bfa4e8574432be412f68914bec96fe55e7c4ab24cbb28247
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
cosmudiscoveryransomwareworm

Malware Config

Targets

    • Target
      2026-08-02_4ecba594d84e9f89cfa3c47a09927768_cobalt-strike_elex_vidar_wannacry
    • Size 81KB
    • SHA256 42b75fdb44037936bfa4e8574432be412f68914bec96fe55e7c4ab24cbb28247
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoverycosmuransomwareworm

    • Detects Cosmu payload

      Cosmu is a worm written in C++.

    • Family: Cosmu

      Cosmu is a Windows worm written in C++.

      wormcosmu

    • Detects executables packed with eXPressor

    • Renames multiple (5125) files with added filename extension

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

      ransomware

    • Executes dropped EXE

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks