General

  • Target

    XClient.exe

  • Size

    102KB

  • Sample

    240518-ykdbpace2s

  • MD5

    5e24357f522943541ff27ef9b9bb562a

  • SHA1

    61866fdd5e79a11c867b47d76c15db24e785ecd2

  • SHA256

    338c220997baa0485c25470cde2f7c2d4ef75160eb873192a5365a2e0e8f715c

  • SHA512

    658d3d5951a239ecd409a567d59b59db009ac4c86dc2a1b92eaab32ae568410c8262901b1acfc4eae486f39adb0d374a533f227649fccc94193a6b849929df59

  • SSDEEP

    1536:eqyNVGF7YnjFF8pNhgUGSL1bWZR9/CJbZT6YdaOpYYVfccAvizZuvdigE:SV/njFF8r5fbWZR+54OpYJ1quvdiv

Malware Config

Extracted

Family

xworm

C2

subjects-handbook.gl.at.ply.gg:56071

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

Targets

    • Target

      XClient.exe

    • Size

      102KB

    • MD5

      5e24357f522943541ff27ef9b9bb562a

    • SHA1

      61866fdd5e79a11c867b47d76c15db24e785ecd2

    • SHA256

      338c220997baa0485c25470cde2f7c2d4ef75160eb873192a5365a2e0e8f715c

    • SHA512

      658d3d5951a239ecd409a567d59b59db009ac4c86dc2a1b92eaab32ae568410c8262901b1acfc4eae486f39adb0d374a533f227649fccc94193a6b849929df59

    • SSDEEP

      1536:eqyNVGF7YnjFF8pNhgUGSL1bWZR9/CJbZT6YdaOpYYVfccAvizZuvdigE:SV/njFF8r5fbWZR+54OpYJ1quvdiv

    • Detect Umbral payload

    • Detect Xworm Payload

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • ModiLoader Second Stage

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops file in Drivers directory

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks