Overview

overview

10

Static

static

10

2026-05-05...ar.exe

windows10-2004-x64

10

2026-05-05...ar.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    2026-05-05_92cd62c8ec617237ede899d204655f22_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar
  • Size 5.6MB
  • Sample260505-eqjacab18p
  • SHA256 b3ecfe461eab2ff945946ed1402be0edc9c03bac369a2d144fcd651caa64f952
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
fesberdiscoverypersistenceupxworm

Malware Config

Targets

    • Target
      2026-05-05_92cd62c8ec617237ede899d204655f22_amadey_cobalt-strike_elex_hijackloader_icedid_luca-stealer_njrat_vidar
    • Size 5.6MB
    • SHA256 b3ecfe461eab2ff945946ed1402be0edc9c03bac369a2d144fcd651caa64f952
    • 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