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Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/11/2024, 02:42

General

  • Target

    c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

  • Size

    77KB

  • MD5

    a307d64f791cb555d029c214364162d8

  • SHA1

    04f134fd1a0b71e0b4b745a97e9a08ed1ee45c74

  • SHA256

    c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454

  • SHA512

    d432bcf7874ea3f74ec7e4fc51b400f7c3492b06479fd12949b7cde698e513bbabd08afae8d0ffc2efbe3d7d0cb44e08c5b2bba3f116b9fd6120713e2cd5f96e

  • SSDEEP

    1536:x5sFO8g/9VM5dQ+aomobhr3KXg6wzOB1SmOnU7Ua+G:x5sU9Vv4bbhr6SOB1S5nU7MG

Malware Config

Extracted

Family

xworm

C2

left-noon.gl.at.ply.gg:60705

Attributes
  • Install_directory

    %AppData%

  • install_file

    US11B.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 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 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 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\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
    "C:\Users\Admin\AppData\Local\Temp\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.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:1004
    • 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\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:968
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2780
    • 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\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3564
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454" /tr "C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3200
  • C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
    C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2236
  • C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
    C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5016

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe.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

    2e907f77659a6601fcc408274894da2e

    SHA1

    9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

    SHA256

    385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

    SHA512

    34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

    Filesize

    944B

    MD5

    07a771c4f31f62b2d04e2befaa36dce7

    SHA1

    662952ede6c1acbb575e8149a5ac2f08edade811

    SHA256

    a2df2570980e1123d9af8e12a27a82d3a4d332f0e7dd44e4e225743207c099b3

    SHA512

    9e339a2d0bfaf5bbe5252f69061652c5880fe1233930830ca7190a65516366e05129907b1656a6790c0093ad82ac73ddee6738d0b78ecb1e3d888f467b889fe9

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wjtm0cwy.po2.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

    Filesize

    77KB

    MD5

    a307d64f791cb555d029c214364162d8

    SHA1

    04f134fd1a0b71e0b4b745a97e9a08ed1ee45c74

    SHA256

    c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454

    SHA512

    d432bcf7874ea3f74ec7e4fc51b400f7c3492b06479fd12949b7cde698e513bbabd08afae8d0ffc2efbe3d7d0cb44e08c5b2bba3f116b9fd6120713e2cd5f96e

  • memory/968-18-0x00007FFB93F40000-0x00007FFB94A01000-memory.dmp

    Filesize

    10.8MB

  • memory/968-15-0x00007FFB93F40000-0x00007FFB94A01000-memory.dmp

    Filesize

    10.8MB

  • memory/968-14-0x00007FFB93F40000-0x00007FFB94A01000-memory.dmp

    Filesize

    10.8MB

  • memory/968-13-0x00007FFB93F40000-0x00007FFB94A01000-memory.dmp

    Filesize

    10.8MB

  • memory/968-12-0x0000023874A40000-0x0000023874A62000-memory.dmp

    Filesize

    136KB

  • memory/1004-0-0x00007FFB93F43000-0x00007FFB93F45000-memory.dmp

    Filesize

    8KB

  • memory/1004-44-0x00007FFB93F43000-0x00007FFB93F45000-memory.dmp

    Filesize

    8KB

  • memory/1004-2-0x00007FFB93F40000-0x00007FFB94A01000-memory.dmp

    Filesize

    10.8MB

  • memory/1004-51-0x00007FFB93F40000-0x00007FFB94A01000-memory.dmp

    Filesize

    10.8MB

  • memory/1004-1-0x0000000000AA0000-0x0000000000ABA000-memory.dmp

    Filesize

    104KB