Overview

overview

10

Static

static

10

2026-08-17...ar.exe

windows10-2004-x64

10

2026-08-17...ar.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-08-17_8daeeb19cbc088a79228d21c23bf4f35_cobalt-strike_elex_hijackloader_icedid_njrat_vidar
  • Size 305KB
  • Sample260817-gw2pzsthpc
  • SHA256 11476315e9776b83c2fd3b9ade5ab3994cea175e9f86b9fa532ea9c7603bba29
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
fesberdiscoverypersistenceupxworm

Malware Config

Targets

    • Target
      2026-08-17_8daeeb19cbc088a79228d21c23bf4f35_cobalt-strike_elex_hijackloader_icedid_njrat_vidar
    • Size 305KB
    • SHA256 11476315e9776b83c2fd3b9ade5ab3994cea175e9f86b9fa532ea9c7603bba29
    • 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