Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 12:42

General

  • Target

    XClient.exe

  • Size

    60KB

  • MD5

    0f803689398c092ad9ae274d5c7507d6

  • SHA1

    693161863fa62cb65e7f3102d55087a9bf816889

  • SHA256

    0c336bb9258f45ded239bfd2a721a779c3a467cfd177d9ab75841d6eb61d2a8a

  • SHA512

    1fed05b278b8243c1e45c34a1eca78492fb24d18296feac978bd54528359d2c07a783bff434921a26a96ba122a8dc9da6d00b9cdda09c6c8569910d0472080f8

  • SSDEEP

    1536:b5GHtqKStfgDGVHc08kbsXHZBgGOq+k6Z:lGNqrIDK8kbsXLOq+bZ

Malware Config

Extracted

Family

xworm

C2

91.92.241.69:5555

Attributes
  • Install_directory

    %AppData%

  • install_file

    AMD Graphics Manager.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1572
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "AMD Graphics Manager" /tr "C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"
      2⤵
      • Creates scheduled task(s)
      PID:924
  • C:\Users\Admin\AppData\Roaming\AMD Graphics Manager
    "C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"
    1⤵
    • Executes dropped EXE
    PID:4688
  • C:\Windows\system32\notepad.exe
    "C:\Windows\system32\notepad.exe"
    1⤵
      PID:3080
    • C:\Users\Admin\AppData\Roaming\AMD Graphics Manager
      "C:\Users\Admin\AppData\Roaming\AMD Graphics Manager"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4224

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\AMD Graphics Manager

      Filesize

      60KB

      MD5

      0f803689398c092ad9ae274d5c7507d6

      SHA1

      693161863fa62cb65e7f3102d55087a9bf816889

      SHA256

      0c336bb9258f45ded239bfd2a721a779c3a467cfd177d9ab75841d6eb61d2a8a

      SHA512

      1fed05b278b8243c1e45c34a1eca78492fb24d18296feac978bd54528359d2c07a783bff434921a26a96ba122a8dc9da6d00b9cdda09c6c8569910d0472080f8

    • memory/1572-0-0x00007FF8010B3000-0x00007FF8010B5000-memory.dmp

      Filesize

      8KB

    • memory/1572-1-0x00000000000B0000-0x00000000000C6000-memory.dmp

      Filesize

      88KB

    • memory/1572-5-0x00007FF8010B0000-0x00007FF801B71000-memory.dmp

      Filesize

      10.8MB

    • memory/1572-6-0x000000001C440000-0x000000001C790000-memory.dmp

      Filesize

      3.3MB

    • memory/1572-7-0x00007FF8010B0000-0x00007FF801B71000-memory.dmp

      Filesize

      10.8MB