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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/02/2025, 18:13

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:2884
    • 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:2028
  • C:\Users\Admin\AppData\Roaming\XClient.exe
    C:\Users\Admin\AppData\Roaming\XClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4344
  • C:\Users\Admin\AppData\Roaming\XClient.exe
    C:\Users\Admin\AppData\Roaming\XClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3908

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

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

    Filesize

    69KB

    MD5

    5f73a7d813ca1b0287eee8e34c8fb97a

    SHA1

    2a209a47e6ca2106397aac89674344761f507842

    SHA256

    fc7e51dc0cdfe45ed4507903bbb9d8442d58dff88ceec8f89ffb354646a2b0c2

    SHA512

    9b86f653e162bc632f6288fee4072aea6c3299e744db9f4707fa0f5c51ddb3c7e4aae21c7cf3c9d480ad375c51e4de15de1161a69459a74133f7d1f005796143

  • memory/2884-0-0x00007FFD9A3A3000-0x00007FFD9A3A5000-memory.dmp

    Filesize

    8KB

  • memory/2884-1-0x0000000000AB0000-0x0000000000AC8000-memory.dmp

    Filesize

    96KB

  • memory/2884-6-0x00007FFD9A3A0000-0x00007FFD9AE61000-memory.dmp

    Filesize

    10.8MB

  • memory/2884-7-0x00007FFD9A3A0000-0x00007FFD9AE61000-memory.dmp

    Filesize

    10.8MB

  • memory/4344-10-0x00007FFD9A3A0000-0x00007FFD9AE61000-memory.dmp

    Filesize

    10.8MB

  • memory/4344-12-0x00007FFD9A3A0000-0x00007FFD9AE61000-memory.dmp

    Filesize

    10.8MB