Overview

overview

10

Static

static

10

2026-10-19...ry.exe

windows10-2004-x64

10

2026-10-19...ry.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-10-19_a4cc7df63223584e0966cfc9dae1d351_amadey_cobalt-strike_elex_vidar_wannacry
  • Size 2.7MB
  • Sample261020-m94dmacx9m
  • SHA256 69161eda9d1b17f6081cb5772aab0503ce7ec6914ba60be6f0610e5e7d109dcd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
fesberdiscoverypersistenceupxworm

Malware Config

Targets

    • Target
      2026-10-19_a4cc7df63223584e0966cfc9dae1d351_amadey_cobalt-strike_elex_vidar_wannacry
    • Size 2.7MB
    • SHA256 69161eda9d1b17f6081cb5772aab0503ce7ec6914ba60be6f0610e5e7d109dcd
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoveryfesberpersistenceupxworm

    • Detects Fesber payload

    • Family: Fesber

      Fesber is a Windows worm written in Delphi.

      wormfesber

    • Modifies WinLogon for persistence

      persistence

    • 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