Overview

overview

10

Static

static

10

2026-08-09...d_.exe

windows10-2004-x64

3

2026-08-09...d_.exe

windows11-ltsc_2024-x64

3

Sharing

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General

  • Target
    2026-08-09_4866c702bf8e7404eb36366b338f1774_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_luca-stealer_njrat_remcos_smoke-loader_vidar_wannacry
  • Size 15.5MB
  • Sample260809-ymvnrax1az
  • SHA256 a2a5af634467875a97aaa8eec21f8fe16c5040d5d56f4d78e17ceb3ab4642f44
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
wormfesber

Malware Config

Signatures

  • Family: Fesber

    Fesber is a Windows worm written in Delphi.

    wormfesber
  • Detects Fesber payload 1 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 1 IoCs
  • Detects executables embedding registry key / value combination indicative of disabling Windows Defen 1 IoCs
  • Unsigned PE 1 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • 2026-08-09_4866c702bf8e7404eb36366b338f1774_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_luca-stealer_njrat_remcos_smoke-loader_vidar_wannacry
    .exe 15.5MB
  • downloader_req.pyc
    574B

2026-08-09_4866c702bf8e7404eb36366b338f1774_amadey_cobalt-strike_elex_glassworm_hijackloader_icedid_luca-stealer_njrat_remcos_smoke-loader_vidar_wannacry

  • SHA256 a2a5af634467875a97aaa8eec21f8fe16c5040d5d56f4d78e17ceb3ab4642f44
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:4windowsx86arch:x86

  • Detects Fesber payload

  • Detects executables containing URLs to raw contents of a Github gist

  • Detects executables embedding registry key / value combination indicative of disabling Windows Defen

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
4
Entry point
15028
Magic Number
267
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_BYTES_REVERSED_LO IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_BYTES_REVERSED_HI
PDB paths