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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    18/11/2024, 14:46

General

  • Target

    31a2b821e933bb193d94438d4a5aa036519535336c936d65b66889fb03164e2d.exe

  • Size

    69KB

  • MD5

    7439cc991a9a756c41153b8e9121baab

  • SHA1

    c62528386e5f62ff2975cc8ed0cad3a7d362e632

  • SHA256

    31a2b821e933bb193d94438d4a5aa036519535336c936d65b66889fb03164e2d

  • SHA512

    cbdfd77671884407f8f4bd9c5251df5d8896b29bd004ea52460eda8a222df7492c69572e044376315624220f3ea66de3aff34323ea281591ca2975f90fa6dd51

  • SSDEEP

    1536:dEmkVu+xslqytUTZfJM6htYxrlYCbM1/kCxtD6LOSIcRGPUC:dEZZx8q/fJLtYFZbM1segO3cQ8C

Malware Config

Extracted

Family

xworm

C2

147.185.221.23:33942

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 5 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 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 behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 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\31a2b821e933bb193d94438d4a5aa036519535336c936d65b66889fb03164e2d.exe
    "C:\Users\Admin\AppData\Local\Temp\31a2b821e933bb193d94438d4a5aa036519535336c936d65b66889fb03164e2d.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:328
    • 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:2836
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {4F64AD17-5466-471E-9E7E-C3991BAC8F40} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2800
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2632
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2700
    • C:\Users\Admin\AppData\Roaming\XClient.exe
      C:\Users\Admin\AppData\Roaming\XClient.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2212

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    7439cc991a9a756c41153b8e9121baab

    SHA1

    c62528386e5f62ff2975cc8ed0cad3a7d362e632

    SHA256

    31a2b821e933bb193d94438d4a5aa036519535336c936d65b66889fb03164e2d

    SHA512

    cbdfd77671884407f8f4bd9c5251df5d8896b29bd004ea52460eda8a222df7492c69572e044376315624220f3ea66de3aff34323ea281591ca2975f90fa6dd51

  • memory/328-0-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

    Filesize

    4KB

  • memory/328-1-0x0000000000260000-0x0000000000278000-memory.dmp

    Filesize

    96KB

  • memory/328-6-0x000007FEF5590000-0x000007FEF5F7C000-memory.dmp

    Filesize

    9.9MB

  • memory/328-7-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

    Filesize

    4KB

  • memory/328-8-0x000007FEF5590000-0x000007FEF5F7C000-memory.dmp

    Filesize

    9.9MB

  • memory/2212-17-0x0000000000C20000-0x0000000000C38000-memory.dmp

    Filesize

    96KB

  • memory/2632-12-0x00000000010B0000-0x00000000010C8000-memory.dmp

    Filesize

    96KB

  • memory/2700-15-0x0000000000090000-0x00000000000A8000-memory.dmp

    Filesize

    96KB