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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250217-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    28/02/2025, 18:08

General

  • Target

    XClient.exe

  • Size

    69KB

  • MD5

    5f73a7d813ca1b0287eee8e34c8fb97a

  • SHA1

    2a209a47e6ca2106397aac89674344761f507842

  • SHA256

    fc7e51dc0cdfe45ed4507903bbb9d8442d58dff88ceec8f89ffb354646a2b0c2

  • SHA512

    9b86f653e162bc632f6288fee4072aea6c3299e744db9f4707fa0f5c51ddb3c7e4aae21c7cf3c9d480ad375c51e4de15de1161a69459a74133f7d1f005796143

  • SSDEEP

    1536:etpR0NcUa78F6TflB1Um7UG2RbqV9R0nXBHykd19jO7XHb:etn0b6TfysUpRbOsRbvjOLHb

Malware Config

Extracted

Family

xworm

C2

6.tcp.ngrok.io:17720:17720

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • 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
  • 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 3 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:852
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4428
  • C:\Users\Admin\AppData\Roaming\XClient.exe
    "C:\Users\Admin\AppData\Roaming\XClient.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1476
  • C:\Users\Admin\AppData\Roaming\XClient.exe
    "C:\Users\Admin\AppData\Roaming\XClient.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log

    Filesize

    654B

    MD5

    11c6e74f0561678d2cf7fc075a6cc00c

    SHA1

    535ee79ba978554abcb98c566235805e7ea18490

    SHA256

    d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

    SHA512

    32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

  • C:\Users\Admin\AppData\Roaming\XClient.exe

    Filesize

    69KB

    MD5

    5f73a7d813ca1b0287eee8e34c8fb97a

    SHA1

    2a209a47e6ca2106397aac89674344761f507842

    SHA256

    fc7e51dc0cdfe45ed4507903bbb9d8442d58dff88ceec8f89ffb354646a2b0c2

    SHA512

    9b86f653e162bc632f6288fee4072aea6c3299e744db9f4707fa0f5c51ddb3c7e4aae21c7cf3c9d480ad375c51e4de15de1161a69459a74133f7d1f005796143

  • memory/852-0-0x00007FFEA8783000-0x00007FFEA8785000-memory.dmp

    Filesize

    8KB

  • memory/852-1-0x0000000000710000-0x0000000000728000-memory.dmp

    Filesize

    96KB

  • memory/852-6-0x00007FFEA8780000-0x00007FFEA9242000-memory.dmp

    Filesize

    10.8MB

  • memory/852-7-0x00007FFEA8783000-0x00007FFEA8785000-memory.dmp

    Filesize

    8KB

  • memory/852-8-0x00007FFEA8780000-0x00007FFEA9242000-memory.dmp

    Filesize

    10.8MB

  • memory/1476-11-0x00007FFEA8780000-0x00007FFEA9242000-memory.dmp

    Filesize

    10.8MB

  • memory/1476-13-0x00007FFEA8780000-0x00007FFEA9242000-memory.dmp

    Filesize

    10.8MB