General

  • Target

    xworm-v61.zip

  • Size

    8KB

  • Sample

    250126-fsnhhstrhk

  • MD5

    4887cbac58fd2afefa5ca6da4b7e819f

  • SHA1

    2953bc48fc9c89865c52d0d0dde573492ed0c2c8

  • SHA256

    272d03b6c4c13d6f820f077564d6beac437a9caf65505eeccd368f8c3cca0fce

  • SHA512

    dfed78b08ba10f4071e117a6ff93d5dfc6f7c604f3e63719c2a3a55987f1ee0fe45e3218667d2060852fe0d6450bb48c3acd17310e1c85fd51e6b22bdc9d8807

  • SSDEEP

    192:PN2x2BlVOePvygP+6/EWkkho6dRJEHXG7djP5yOWN:AxwOePvN/EWkkG6dRJg27VPlWN

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:7000

Mutex

Wal8lqFM1lNFMF18

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family

xworm

C2

127.0.0.1:7000

Attributes
  • install_file

    USB.exe

Targets

    • Target

      xworm-v61.zip

    • Size

      8KB

    • MD5

      4887cbac58fd2afefa5ca6da4b7e819f

    • SHA1

      2953bc48fc9c89865c52d0d0dde573492ed0c2c8

    • SHA256

      272d03b6c4c13d6f820f077564d6beac437a9caf65505eeccd368f8c3cca0fce

    • SHA512

      dfed78b08ba10f4071e117a6ff93d5dfc6f7c604f3e63719c2a3a55987f1ee0fe45e3218667d2060852fe0d6450bb48c3acd17310e1c85fd51e6b22bdc9d8807

    • SSDEEP

      192:PN2x2BlVOePvygP+6/EWkkho6dRJEHXG7djP5yOWN:AxwOePvN/EWkkG6dRJg27VPlWN

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Uses the VBS compiler for execution

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks