Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 13:09

General

  • Target

    Injector2.exe

  • Size

    327KB

  • MD5

    3e1b6c00c152ecd0945df66e71caa4c1

  • SHA1

    6b4e5c1646cac905034b740205f6003a73e872dc

  • SHA256

    1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89

  • SHA512

    82a8682d63cb88e74667b9a4824e8d832aa9116fd8854e9debc0912ce1a5437544db213e363a6cfbf42bd5a1b0ed6ba4f622803759ca66e6ab50c4ad34b4627b

  • SSDEEP

    1536:MDW2YGf/GEjNLTkAD5eZZerr+bhsFz08ISAkTO/2jxSZEsFGfFuAYCRAutPsAzAz:MDrYW/rka5Rr+bhsjItGOOj0j

Malware Config

Extracted

Family

xworm

C2

rat234678235481254.ddns.net:4782

<Xwormmm>:3412

Attributes
  • Install_directory

    %AppData%

  • install_file

    Runtime Broker.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • 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 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).

  • Creates scheduled task(s) 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 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\Injector2.exe
    "C:\Users\Admin\AppData\Local\Temp\Injector2.exe"
    1⤵
    • Checks computer location settings
    • 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:1340
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4344
  • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
    "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:436
  • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
    "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3436
  • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
    "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe

    Filesize

    327KB

    MD5

    3e1b6c00c152ecd0945df66e71caa4c1

    SHA1

    6b4e5c1646cac905034b740205f6003a73e872dc

    SHA256

    1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89

    SHA512

    82a8682d63cb88e74667b9a4824e8d832aa9116fd8854e9debc0912ce1a5437544db213e363a6cfbf42bd5a1b0ed6ba4f622803759ca66e6ab50c4ad34b4627b

  • memory/436-9-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

    Filesize

    10.8MB

  • memory/436-11-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1340-0-0x00007FFD7D5F3000-0x00007FFD7D5F5000-memory.dmp

    Filesize

    8KB

  • memory/1340-1-0x0000000000660000-0x00000000006B6000-memory.dmp

    Filesize

    344KB

  • memory/1340-6-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1340-12-0x00007FFD7D5F3000-0x00007FFD7D5F5000-memory.dmp

    Filesize

    8KB

  • memory/1340-13-0x00007FFD7D5F0000-0x00007FFD7E0B1000-memory.dmp

    Filesize

    10.8MB