Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    31-05-2024 12:40

General

  • Target

    XClient.exe

  • Size

    59KB

  • MD5

    d172c0a4ae3e8cef6a0a910bde62e195

  • SHA1

    51139fc633fe81a66c8ed55081f92ec5256bd0bd

  • SHA256

    94b65da2b5cc3728547f892a46e9c48c5d54477d10ea8e210304593acd3568e7

  • SHA512

    d82c930a42fd623aeee51007453d201e96110b546f1fb34080fc6d4c1488d71b3828f5f1833d347993444e4d332aa00fbb7b8922fce676d220375470ad0fa467

  • SSDEEP

    1536:9vv68xQQodoW8YTK6uDkbrfSVxwXSOqQ+k:1vjWQoGJYTK6CkbrfHSOqQ+k

Malware Config

Extracted

Family

xworm

C2

length-desert.gl.at.ply.gg:58023

%AppData%:9

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Detect Xworm Payload 4 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • 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).

  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 9 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:2728
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "9" /tr "C:\Users\Admin\AppData\Roaming\9"
      2⤵
      • Creates scheduled task(s)
      PID:2980
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {3EB97015-FDD4-4815-B835-1AD2156F033C} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Roaming\9
      C:\Users\Admin\AppData\Roaming\9
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2632
    • C:\Users\Admin\AppData\Roaming\9
      C:\Users\Admin\AppData\Roaming\9
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1564

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\9

    Filesize

    59KB

    MD5

    d172c0a4ae3e8cef6a0a910bde62e195

    SHA1

    51139fc633fe81a66c8ed55081f92ec5256bd0bd

    SHA256

    94b65da2b5cc3728547f892a46e9c48c5d54477d10ea8e210304593acd3568e7

    SHA512

    d82c930a42fd623aeee51007453d201e96110b546f1fb34080fc6d4c1488d71b3828f5f1833d347993444e4d332aa00fbb7b8922fce676d220375470ad0fa467

  • memory/1564-14-0x0000000001110000-0x0000000001126000-memory.dmp

    Filesize

    88KB

  • memory/2632-11-0x0000000000170000-0x0000000000186000-memory.dmp

    Filesize

    88KB

  • memory/2728-0-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

    Filesize

    4KB

  • memory/2728-1-0x0000000000950000-0x0000000000966000-memory.dmp

    Filesize

    88KB

  • memory/2728-5-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

    Filesize

    9.9MB

  • memory/2728-6-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

    Filesize

    4KB

  • memory/2728-7-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

    Filesize

    9.9MB