Analysis

  • max time kernel
    103s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 03:50

General

  • Target

    sigmasoft-0.1xw.exe

  • Size

    70KB

  • MD5

    3df649fb09f96b8f230533fb47e278bd

  • SHA1

    a23b90bef06801bb0a8741625b1d3442346b2c36

  • SHA256

    6e0a8cf2d9273efa2593fe6f836013636da8fcc77c31fe00e05666fe9e41d124

  • SHA512

    34cc7cece2c553086c191478302daa4fbb7b95dd0a176762b8a0400325bb965704d168df615713d9f23018f612e2aa0ab6b661ab052ed06ed5ac6b67dddbdb96

  • SSDEEP

    1536:eX9lmdM9+Tuq1tndrW+btHA9g6xrOBjgUIdzPQUY:m9lQMOuet5W+btHARrOBFISV

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:42772

never-knowledge.gl.at.ply.gg:42772

gorodpro-42772.portmap.host:42772

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svchost.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • 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 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 behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\sigmasoft-0.1xw.exe
    "C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.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:3764
    • 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\sigmasoft-0.1xw.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2568
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sigmasoft-0.1xw.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5100
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4912
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2804
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:1872
  • C:\ProgramData\svchost.exe
    C:\ProgramData\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2644
  • C:\ProgramData\svchost.exe
    C:\ProgramData\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\svchost.exe

    Filesize

    70KB

    MD5

    3df649fb09f96b8f230533fb47e278bd

    SHA1

    a23b90bef06801bb0a8741625b1d3442346b2c36

    SHA256

    6e0a8cf2d9273efa2593fe6f836013636da8fcc77c31fe00e05666fe9e41d124

    SHA512

    34cc7cece2c553086c191478302daa4fbb7b95dd0a176762b8a0400325bb965704d168df615713d9f23018f612e2aa0ab6b661ab052ed06ed5ac6b67dddbdb96

  • 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\CLR_v4.0\UsageLogs\svchost.exe.log

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • 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

    04f1d68afbed6b13399edfae1e9b1472

    SHA1

    8bfdcb687a995e4a63a8c32df2c66dc89f91a8b0

    SHA256

    f358f33a42122e97c489fad7bbc8beab2eb42d42e4ec7fce0dd61fe6d8c0b8de

    SHA512

    30c5e72a8134992094d937d2588f7a503b1d6407d11afe0265b7c8b0ce14071925e5caed13fc4f9c28705df4c7aed3601f81b007048b148af274d7784aa5fb75

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

    Filesize

    944B

    MD5

    e58749a7a1826f6ea62df1e2ef63a32b

    SHA1

    c0bca21658b8be4f37b71eec9578bfefa44f862d

    SHA256

    0e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93

    SHA512

    4cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uepikw1f.3iy.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2568-12-0x00007FF9F65B0000-0x00007FF9F7071000-memory.dmp

    Filesize

    10.8MB

  • memory/2568-17-0x00007FF9F65B0000-0x00007FF9F7071000-memory.dmp

    Filesize

    10.8MB

  • memory/2568-13-0x00007FF9F65B0000-0x00007FF9F7071000-memory.dmp

    Filesize

    10.8MB

  • memory/2568-14-0x00007FF9F65B0000-0x00007FF9F7071000-memory.dmp

    Filesize

    10.8MB

  • memory/2568-2-0x00000190EF070000-0x00000190EF092000-memory.dmp

    Filesize

    136KB

  • memory/3764-1-0x0000000000FE0000-0x0000000000FF8000-memory.dmp

    Filesize

    96KB

  • memory/3764-56-0x00007FF9F65B0000-0x00007FF9F7071000-memory.dmp

    Filesize

    10.8MB

  • memory/3764-57-0x00007FF9F65B3000-0x00007FF9F65B5000-memory.dmp

    Filesize

    8KB

  • memory/3764-58-0x00007FF9F65B0000-0x00007FF9F7071000-memory.dmp

    Filesize

    10.8MB

  • memory/3764-0-0x00007FF9F65B3000-0x00007FF9F65B5000-memory.dmp

    Filesize

    8KB