General

  • Target

    Startup.exe

  • Size

    41KB

  • Sample

    250328-yc375ssk14

  • MD5

    5e70c383a38d3ecc7d779bc76e61753f

  • SHA1

    4d94fe4fc00e52703fbe15d18e85998f6a92e053

  • SHA256

    bb3d1286bb2b5bc25e0818fca4a7d4f18e0a818cf543dd7819ca99937f7966df

  • SHA512

    17436a0501449867f1f0482357ac5a7c8cc706b69ddb11ed26ba68153aabb027bd7fc78ba6731378c72777acca0ef4199c5f3049b06472dd49a930909729771c

  • SSDEEP

    768:TcAz60wqEL3OixHL1s7LZy69wF19j5Q6EO9h0LV:TcAz60K/xHLG7LZaF19j5Q6EO9EV

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

DkTNOCQ3zN28Lubg

Attributes
  • Install_directory

    %AppData%

  • install_file

    Startup.exe

Targets

    • Target

      Startup.exe

    • Size

      41KB

    • MD5

      5e70c383a38d3ecc7d779bc76e61753f

    • SHA1

      4d94fe4fc00e52703fbe15d18e85998f6a92e053

    • SHA256

      bb3d1286bb2b5bc25e0818fca4a7d4f18e0a818cf543dd7819ca99937f7966df

    • SHA512

      17436a0501449867f1f0482357ac5a7c8cc706b69ddb11ed26ba68153aabb027bd7fc78ba6731378c72777acca0ef4199c5f3049b06472dd49a930909729771c

    • SSDEEP

      768:TcAz60wqEL3OixHL1s7LZy69wF19j5Q6EO9h0LV:TcAz60K/xHLG7LZaF19j5Q6EO9EV

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • 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

MITRE ATT&CK Enterprise v15

Tasks

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