Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 12:47

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 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Drops startup file 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 1 IoCs
  • Suspicious use of WriteProcessMemory 3 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⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1276
    • 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:2204
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {F9C61D30-1092-42C9-A435-20EFC0B8E938} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]
    1⤵
      PID:1588

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1276-0-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

      Filesize

      4KB

    • memory/1276-1-0x0000000000DA0000-0x0000000000DB6000-memory.dmp

      Filesize

      88KB

    • memory/1276-5-0x000007FEF5590000-0x000007FEF5F7C000-memory.dmp

      Filesize

      9.9MB

    • memory/1276-6-0x000000001D830000-0x000000001DB80000-memory.dmp

      Filesize

      3.3MB

    • memory/1276-7-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

      Filesize

      4KB

    • memory/1276-8-0x000007FEF5590000-0x000007FEF5F7C000-memory.dmp

      Filesize

      9.9MB