Analysis

  • max time kernel
    106s
  • max time network
    97s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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 3 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.

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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⤵
    • 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:2252
    • 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:1208
    • 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:2412
    • 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:2516
    • 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:2932
    • 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:860
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {7D9C2445-5445-4FE9-8188-F9CE41C1FA74} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1436
    • C:\ProgramData\svchost.exe
      C:\ProgramData\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2368
    • C:\ProgramData\svchost.exe
      C:\ProgramData\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2560

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    25cfc7915c17d6ee5dd1f82643949219

    SHA1

    c7830dd1398fe56fc86aadb6324a0d2bd19a4757

    SHA256

    8c09e34f686daa12d32a0488c17d389292f2353c16de27fdb26095983dcd7b88

    SHA512

    8c036ffe9806f38df3fba4fc434922c061134555f03c81935494921429d1b8af1a60aa7ab74b5ded9400fcaa128d322c0a9a64ae4daf717dfd276f5f1cc7262b

  • \??\PIPE\srvsvc

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • memory/1208-6-0x0000000002D70000-0x0000000002DF0000-memory.dmp

    Filesize

    512KB

  • memory/1208-7-0x000000001B680000-0x000000001B962000-memory.dmp

    Filesize

    2.9MB

  • memory/1208-8-0x0000000001F40000-0x0000000001F48000-memory.dmp

    Filesize

    32KB

  • memory/2252-31-0x000000001B3D0000-0x000000001B450000-memory.dmp

    Filesize

    512KB

  • memory/2252-0-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

    Filesize

    4KB

  • memory/2252-32-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

    Filesize

    4KB

  • memory/2252-33-0x000000001B3D0000-0x000000001B450000-memory.dmp

    Filesize

    512KB

  • memory/2252-1-0x0000000000F70000-0x0000000000F88000-memory.dmp

    Filesize

    96KB

  • memory/2368-37-0x0000000000F60000-0x0000000000F78000-memory.dmp

    Filesize

    96KB

  • memory/2412-15-0x0000000002240000-0x0000000002248000-memory.dmp

    Filesize

    32KB

  • memory/2412-14-0x000000001B6A0000-0x000000001B982000-memory.dmp

    Filesize

    2.9MB