Overview

overview

10

Static

static

10

XClasient.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-01-2025 19:27

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General

  • Target

    XClasient.exe

  • Size

    39KB

  • MD5

    13a7a5f3a3d2ab4422e86399253cd99e

  • SHA1

    45c693d414aabc6c4cf74fdfe747ff4f9c91840c

  • SHA256

    c633594472eac9e17a1995fbc7270195e4638e85839ac1735e4a17bb29361b40

  • SHA512

    1dd7b257e10d289d0955356a3f40bcacaedf66e512de5dd10c23b77cfcf347e979de11f44adf8bcc67872e2a5c47b3448280cc1341615f9d3821c5552515d6d9

  • SSDEEP

    768:Rnp2iB3sNvzK2Awjzef+YEW7KbiCqEoFN9UwLAOphXjtYG/:miB8V6f6WlCq9FN9UwLAOpfB/

Score
10/10
xwormpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

https://pastebin.com/raw/wtvveYnA:1

Mutex

zww9foLlwF3BhQYA

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    msconfig.exe

  • pastebin_url

    https://pastebin.com/raw/wtvveYnA

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • 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
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 33 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.

    persistenceexecution
  • 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\XClasient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClasient.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3936
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "msconfig" /tr "C:\Users\Admin\msconfig.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:736
  • C:\Users\Admin\msconfig.exe
    C:\Users\Admin\msconfig.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3540
  • C:\Users\Admin\msconfig.exe
    C:\Users\Admin\msconfig.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    Download Submit

  • C:\Users\Admin\msconfig.exe
    Filesize

    39KB

    MD5

    13a7a5f3a3d2ab4422e86399253cd99e

    SHA1

    45c693d414aabc6c4cf74fdfe747ff4f9c91840c

    SHA256

    c633594472eac9e17a1995fbc7270195e4638e85839ac1735e4a17bb29361b40

    SHA512

    1dd7b257e10d289d0955356a3f40bcacaedf66e512de5dd10c23b77cfcf347e979de11f44adf8bcc67872e2a5c47b3448280cc1341615f9d3821c5552515d6d9

    Download Submit

  • memory/3540-11-0x00007FFF28EB0000-0x00007FFF29971000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3540-13-0x00007FFF28EB0000-0x00007FFF29971000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3936-0-0x00007FFF28EB3000-0x00007FFF28EB5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3936-1-0x00000000008F0000-0x0000000000900000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3936-6-0x00007FFF28EB0000-0x00007FFF29971000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3936-7-0x00007FFF28EB3000-0x00007FFF28EB5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3936-8-0x00007FFF28EB0000-0x00007FFF29971000-memory.dmp

    Filesize

    10.8MB

    Download