Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    31-05-2024 03:36

General

  • Target

    XClient.exe

  • Size

    72KB

  • MD5

    886abac8e29288624c9cfc55dfc7d940

  • SHA1

    35cf22bb640bdb7a641ce6dbb8efec00da592b0e

  • SHA256

    8fcf527c18bd78b4fb4a7933eaba050826ce621f70ec6660da71607cf768f381

  • SHA512

    6ae6939341612bedd320d276285b9a07884aa3ae941aac90a404d50bc696336cc278e2eee32c0a8f43782c9522a86ff1a0e89cd48fdaaf2040a074a65c0036f7

  • SSDEEP

    1536:tsWNT4wTOYvKz3Gvdr4u+bXcpqmQOVXoGe6Yp2hnz/ORgRW96exN:tsa4sy7Gvd3+bXcpK2bOuWv

Malware Config

Extracted

Family

xworm

C2

loss-winners.gl.at.ply.gg:61007

Attributes
  • Install_directory

    %AppData%

  • install_file

    Expensive 3.1.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
  • 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\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4432
    • 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:2076
    • 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:576
    • 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\Expensive 3.1.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4008
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Expensive 3.1.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1632

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

    1a9fa92a4f2e2ec9e244d43a6a4f8fb9

    SHA1

    9910190edfaccece1dfcc1d92e357772f5dae8f7

    SHA256

    0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

    SHA512

    5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

    Filesize

    944B

    MD5

    e47c3fa11e796c492a8388c946bf1636

    SHA1

    4a090378f0db26c6f019c9203f5b27f12fa865c7

    SHA256

    4bb861850395dcc3bec4691e8b9f0fa733b8a2d568d460a9201d65250b12fee1

    SHA512

    8d4af4eba3019cd060561f42cff11374eafe59da5e5ad677e41d0b9198b87d6d13706e760d13c70574ed1384993a1597f886d21fe6ecd0186379a1e93db30695

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

    Filesize

    944B

    MD5

    050567a067ffea4eb40fe2eefebdc1ee

    SHA1

    6e1fb2c7a7976e0724c532449e97722787a00fec

    SHA256

    3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e

    SHA512

    341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ry1n4ybj.gve.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2076-12-0x000002E0CBD00000-0x000002E0CBD22000-memory.dmp

    Filesize

    136KB

  • memory/2076-13-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/2076-14-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/2076-15-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/2076-18-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/2076-8-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/2076-7-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/4432-0-0x00007FF836C73000-0x00007FF836C75000-memory.dmp

    Filesize

    8KB

  • memory/4432-1-0x0000000000910000-0x0000000000928000-memory.dmp

    Filesize

    96KB

  • memory/4432-51-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/4432-52-0x00007FF836C70000-0x00007FF837732000-memory.dmp

    Filesize

    10.8MB

  • memory/4432-53-0x0000000000FD0000-0x0000000000FDC000-memory.dmp

    Filesize

    48KB