Analysis

  • max time kernel
    1800s
  • max time network
    1797s
  • 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, 10:45

General

  • Target
    Injector2.exe
  • Size 327KB
  • Sample240531-mtl5eaff82
  • SHA256 1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89
  • MD5 SHA1 SHA512 SSDEEP

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 30 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 32 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:3216
    • 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:1084
  • 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:3924
  • 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:2408
  • 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:4224
  • 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:4996
  • 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:4088
  • 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:2568
  • 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:4288
  • 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:2960
  • 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:4816
  • 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:1888
  • 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:744
  • 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:4264
  • 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:1272
  • 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:4420
  • 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:1220
  • 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:3976
  • 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:4668
  • 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:4884
  • 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:5092
  • 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:4628
  • 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:4752
  • 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:1808
  • 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:3620
  • 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:1184
  • 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:1000
  • 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:4888
  • 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:4380
  • 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:3028
  • 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:3056
  • 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:2240

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        Runtime Broker.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Runtime Broker.exe.log
        • Size 654B
        • SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
        • MD5 SHA1 SHA512

        Runtime Broker.exe

        • Path C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
        • Size 327KB
        • SHA256 1bee8362e0fffaa161de96775b92a2b6be47e65798251d0bfd4b82d134cfbd89
        • MD5 SHA1 SHA512 SSDEEP

        memory/3216-0-0x00007FFE0DD13000-0x00007FFE0DD15000-memory.dmp

        memory/3216-1-0x0000000000380000-0x00000000003D6000-memory.dmp

        memory/3216-6-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp

        memory/3216-7-0x00007FFE0DD13000-0x00007FFE0DD15000-memory.dmp

        memory/3216-8-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp

        memory/3924-11-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp

        memory/3924-14-0x00007FFE0DD10000-0x00007FFE0E7D1000-memory.dmp