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Resubmissions

24/01/2025, 19:14

250124-xxql4stmey 10

24/01/2025, 09:33

250124-lh9wnasrhn 10

Analysis

  • max time kernel
    148s
  • 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
    24/01/2025, 09:33

General

  • Target

    StupidMonkey.exe

  • Size

    70KB

  • MD5

    4c785ba0487bfec51faf4788d564ee9f

  • SHA1

    786fdc994a71d7e02a556e3f720b41a096a789f5

  • SHA256

    c81ae973db641e3c60912166be8979a60b95253ae290c145b9a2133ad7a2ebb8

  • SHA512

    b6b7fbd58e1c3657a81d17a974fc609c1af29dab6489685d2eea5e1397e12853c17086a537f7607aef6833f358965788adc961b44eeff21530ff89f9776eee06

  • SSDEEP

    1536:X7eLuJn1XH70d76kbDD0k2jF16K7HmTzOt5YP:X79hpb0YkbDLE57HmTzOts

Malware Config

Extracted

Family

xworm

C2

wood-matches.gl.at.ply.gg:23086

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    USB.exe

Extracted

Family

discordrat

Attributes
  • discord_token

    MTMzMDMyNzc3MjM3NTAyNzgxMg.GWNm0N.hjhDXtec3jd5n3sEjWHGfGyOO28kBaPWiS-HPA

  • server_id

    1330267614202560512

Signatures

  • Detect Xworm Payload 2 IoCs
  • Discord RAT

    A RAT written in C# using Discord as a C2.

  • Discordrat family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 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\StupidMonkey.exe
    "C:\Users\Admin\AppData\Local\Temp\StupidMonkey.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:4724
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\StupidMonkey.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:376
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'StupidMonkey.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:324
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Client Server Runtime Process'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3100
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Client Server Runtime Process'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1940
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Client Server Runtime Process" /tr "C:\ProgramData\Client Server Runtime Process"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2076
    • C:\Users\Admin\AppData\Local\Temp\rsjmdy.exe
      "C:\Users\Admin\AppData\Local\Temp\rsjmdy.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:736
  • C:\ProgramData\Client Server Runtime Process
    "C:\ProgramData\Client Server Runtime Process"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2448
  • C:\ProgramData\Client Server Runtime Process
    "C:\ProgramData\Client Server Runtime Process"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3900

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\Client Server Runtime Process

    Filesize

    70KB

    MD5

    4c785ba0487bfec51faf4788d564ee9f

    SHA1

    786fdc994a71d7e02a556e3f720b41a096a789f5

    SHA256

    c81ae973db641e3c60912166be8979a60b95253ae290c145b9a2133ad7a2ebb8

    SHA512

    b6b7fbd58e1c3657a81d17a974fc609c1af29dab6489685d2eea5e1397e12853c17086a537f7607aef6833f358965788adc961b44eeff21530ff89f9776eee06

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client Server Runtime Process.log

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    e95adb52d58e281a1b2588fb63f649a8

    SHA1

    29d9e100bf4f8cf07ba367e0b2ba7f19651b98a1

    SHA256

    d83b509fca61f585536172fdbc05a0a3afd367af2feb9d9fe1532d03077a5328

    SHA512

    e100b19e044af84a520f783f5e5e917655800386f17f6d9c584ab6da55d99a97db35c138b9db914997ed0d34ea6bce36526f74c1af75b62fb24d580e03a27ccd

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    83685d101174171875b4a603a6c2a35c

    SHA1

    37be24f7c4525e17fa18dbd004186be3a9209017

    SHA256

    0c557845aab1da497bbff0e8fbe65cabf4cb2804b97ba8ae8c695a528af70870

    SHA512

    005a97a8e07b1840abdcef86a7881fd9bdc8acbfdf3eafe1dceb6374060626d81d789e57d87ca4096a39e28d5cca00f8945edff0a747591691ae75873d2b3fb5

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    b7189719e6df2c3dfc76197ec3f31f7a

    SHA1

    effd91412deadc87cc10ef76cdecc1e0b54b6d41

    SHA256

    1c72fa37d078b92c7e900b2e3d17c43c34d936a696a8ddf6c519f4a80308b892

    SHA512

    2df1f1d45844da7ffb17cdfb411f223e9c614c00f5cf7eb5ba92bf7ba174875af2a515371208286c95c0479c934ae2c6a83dfc0b54380be89db1eddd19faf978

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hy2vtinu.c02.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\rsjmdy.exe

    Filesize

    78KB

    MD5

    24b361200a5fc61a62657c8ef7886d1f

    SHA1

    a6e4602b47f50e943603c5164bd6750e3b58a5ef

    SHA256

    7f4b62dd5a02a17056e390f59bca7a314d40bc3e8928307a56b558033dd58bb7

    SHA512

    a1081da6c801dbe649b25c7bc7fce26a20d22b574df0b9b0050ec8089acc29f86f28f77bdbd3610210452255162939832c7a7e35344a9335981e0fef4cd4542a

  • memory/376-5-0x00007FFEC95C0000-0x00007FFECA081000-memory.dmp

    Filesize

    10.8MB

  • memory/376-18-0x00007FFEC95C0000-0x00007FFECA081000-memory.dmp

    Filesize

    10.8MB

  • memory/376-11-0x0000021771FD0000-0x0000021771FF2000-memory.dmp

    Filesize

    136KB

  • memory/376-4-0x00007FFEC95C0000-0x00007FFECA081000-memory.dmp

    Filesize

    10.8MB

  • memory/376-3-0x00007FFEC95C0000-0x00007FFECA081000-memory.dmp

    Filesize

    10.8MB

  • memory/736-68-0x000001A8E5830000-0x000001A8E5848000-memory.dmp

    Filesize

    96KB

  • memory/736-69-0x000001A900000000-0x000001A9001C2000-memory.dmp

    Filesize

    1.8MB

  • memory/736-70-0x000001A8806A0000-0x000001A880BC8000-memory.dmp

    Filesize

    5.2MB

  • memory/4724-0-0x00007FFEC95C3000-0x00007FFEC95C5000-memory.dmp

    Filesize

    8KB

  • memory/4724-56-0x00007FFEC95C0000-0x00007FFECA081000-memory.dmp

    Filesize

    10.8MB

  • memory/4724-2-0x00007FFEC95C0000-0x00007FFECA081000-memory.dmp

    Filesize

    10.8MB

  • memory/4724-1-0x0000000000250000-0x0000000000268000-memory.dmp

    Filesize

    96KB