Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-05-2024 11:00

General

  • Target

    Probiv.exe

  • Size

    67KB

  • MD5

    613288a7e55550e864d86191542d9177

  • SHA1

    22262078f189408184206777a67a64b9fb70e99a

  • SHA256

    a9e49fdb9c43601c9e860d851f4d969550aaf43af8b84d178ea88257e8065a12

  • SHA512

    22dd638b808a34fa64d354135407e8ac952cd96ce37ede335b055d590dcd360b63462233c159c1859e17707bf413f507494cc3656555fc606de195976dd47006

  • SSDEEP

    1536:SmsKyHPhRopHbWTakbOzUyZX6I4wEON2GE:1OvbOoyb4wEONa

Malware Config

Extracted

Family

xworm

C2

registered-martial.gl.at.ply.gg:62460

Attributes
  • Install_directory

    %Temp%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 1 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.

  • 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 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Probiv.exe
    "C:\Users\Admin\AppData\Local\Temp\Probiv.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4880
    • 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\Probiv.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1576
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Probiv.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4608
    • 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\XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2464
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    627073ee3ca9676911bee35548eff2b8

    SHA1

    4c4b68c65e2cab9864b51167d710aa29ebdcff2e

    SHA256

    85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

    SHA512

    3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

    Filesize

    944B

    MD5

    e3840d9bcedfe7017e49ee5d05bd1c46

    SHA1

    272620fb2605bd196df471d62db4b2d280a363c6

    SHA256

    3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

    SHA512

    76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

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

    Filesize

    944B

    MD5

    eb9dd0f1e84c3e70c5b401d33c439803

    SHA1

    36f90b3634d6b7c78140e762397d47845ffb944c

    SHA256

    c1647b091931f45c019578e5215d837bffe70f8edafae1cee39025116e8fcfd4

    SHA512

    1c5a3ee2a79f8653759a16f1a15ae62600ff4eedef66a16dfeab4504a1650c5222de8227a95215d42b3741d4d9ae1a985b9fbe594fffa4b2dfb969c3c5fdfab6

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

    Filesize

    944B

    MD5

    e07eea85a8893f23fb814cf4b3ed974c

    SHA1

    8a8125b2890bbddbfc3531d0ee4393dbbf5936fe

    SHA256

    83387ce468d717a7b4ba238af2273da873b731a13cc35604f775a31fa0ac70ea

    SHA512

    9d4808d8a261005391388b85da79e4c5396bdded6e7e5ce3a3a23e7359d1aa1fb983b4324f97e0afec6e8ed9d898322ca258dd7cda654456dd7e84c9cbd509df

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_irdx3gv1.rzf.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1576-3-0x00007FFDA2570000-0x00007FFDA3032000-memory.dmp

    Filesize

    10.8MB

  • memory/1576-13-0x00007FFDA2570000-0x00007FFDA3032000-memory.dmp

    Filesize

    10.8MB

  • memory/1576-14-0x00007FFDA2570000-0x00007FFDA3032000-memory.dmp

    Filesize

    10.8MB

  • memory/1576-17-0x00007FFDA2570000-0x00007FFDA3032000-memory.dmp

    Filesize

    10.8MB

  • memory/1576-4-0x000001D9F4A90000-0x000001D9F4AB2000-memory.dmp

    Filesize

    136KB

  • memory/4880-0-0x00007FFDA2573000-0x00007FFDA2575000-memory.dmp

    Filesize

    8KB

  • memory/4880-2-0x00007FFDA2570000-0x00007FFDA3032000-memory.dmp

    Filesize

    10.8MB

  • memory/4880-1-0x00000000009A0000-0x00000000009B8000-memory.dmp

    Filesize

    96KB

  • memory/4880-50-0x00007FFDA2570000-0x00007FFDA3032000-memory.dmp

    Filesize

    10.8MB