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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18/11/2024, 18:48

General

  • Target

    Windows Shell Experience Host.exe

  • Size

    86KB

  • MD5

    17f122079462e212871a1e2eb20eaff9

  • SHA1

    349e4b54323acce835916a2bbe40dc9c5d30931f

  • SHA256

    f483197df60b8767d23fa820efaab0c6bcc3a4b02ebee3c8f1290ef699f6697e

  • SHA512

    95548cb30e9e45c4024be181253200d2188b622754158f6268fa09e41327dbb8468399a1b5ddd9d868413638bf1b9b18f6814586530f2c6a0a6cbd6311234e94

  • SSDEEP

    768:NG9nICDiZGhCMhOB0s1SbiFG9Ox7h86BOMhUL02dC+IHZK:NgICDiZQRhVeFG9e7h86BOM+Nd6c

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.20:65300

Mutex

RMe1pa1UgjNcB2Un

Attributes
  • Install_directory

    %AppData%

  • install_file

    Windows Shell Experience Host.exe

aes.plain

Signatures

  • Detect Xworm Payload 1 IoCs
  • 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.

  • Drops startup file 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).

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.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:2032
    • 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\Windows Shell Experience Host.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2988
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Shell Experience Host.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2708
    • 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\Windows Shell Experience Host.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2760
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Shell Experience Host.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\BBJ98O0VJPZP2ZGI6YOR.temp

    Filesize

    7KB

    MD5

    6d0ef08fb863a3ba1a85b53db2a6baab

    SHA1

    e94cb8ebfaa9fa4a964e9e86b193e4c59641fff5

    SHA256

    9555b7ece3afe725b7beeb03fe12b0a0214fa427305f148c867c7b8841efd725

    SHA512

    25bc722e324ec5de43bd2a3f971851b18d2d6db798c9973b5edece3ce6194ebf6d6ea058900b2a179f238322499e58250e45af2f89f05bf35da567c59afddb06

  • memory/2032-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

    Filesize

    4KB

  • memory/2032-1-0x0000000000A00000-0x0000000000A1A000-memory.dmp

    Filesize

    104KB

  • memory/2032-2-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

    Filesize

    9.9MB

  • memory/2032-27-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

    Filesize

    4KB

  • memory/2032-32-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

    Filesize

    9.9MB

  • memory/2708-16-0x00000000022C0000-0x00000000022C8000-memory.dmp

    Filesize

    32KB

  • memory/2708-15-0x000000001B750000-0x000000001BA32000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-7-0x00000000027A0000-0x0000000002820000-memory.dmp

    Filesize

    512KB

  • memory/2988-8-0x000000001B640000-0x000000001B922000-memory.dmp

    Filesize

    2.9MB

  • memory/2988-9-0x0000000002820000-0x0000000002828000-memory.dmp

    Filesize

    32KB