Analysis

  • max time kernel
    30s
  • max time network
    141s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04-09-2024 05:57

General

  • Target

    0b142a5773fcd9ae5cbb967f748e8da9a89e74aa50a0e1cd52f3aaa313bc749d.exe

  • Size

    14.2MB

  • MD5

    741b1f2ee5826897af2ba2ec765296e4

  • SHA1

    706534d9c6a16354974b3b6fd6d1f620524b7dd1

  • SHA256

    0b142a5773fcd9ae5cbb967f748e8da9a89e74aa50a0e1cd52f3aaa313bc749d

  • SHA512

    a0b14ab280d906a8ad1681e335d30a457b02355cc941d12208f2ef460a9b1f700b84789749ee2080fb4351cce09e3cceeb9fea94478c3c81ae1fb184892de03a

  • SSDEEP

    196608:q1X5v7sGYYHDZH3OrlZPtgLklkC9sSJP/rSzQHvWSpdUorPr/kvmXhJ9aCD:qHqDVgV+9kQH+SfLdrnD

Malware Config

Extracted

Family

xworm

Version

5.0

C2

45.141.26.197:7000

Mutex

9nYi5R05H806aXaO

Attributes
  • Install_directory

    %AppData%

  • install_file

    VLC_Media.exe

aes.plain

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.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 2 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0b142a5773fcd9ae5cbb967f748e8da9a89e74aa50a0e1cd52f3aaa313bc749d.exe
    "C:\Users\Admin\AppData\Local\Temp\0b142a5773fcd9ae5cbb967f748e8da9a89e74aa50a0e1cd52f3aaa313bc749d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3248
    • C:\Users\Admin\AppData\Local\Temp\XWorm V5.4.exe
      "C:\Users\Admin\AppData\Local\Temp\XWorm V5.4.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:4464
    • C:\Users\Admin\AppData\Local\Temp\VLC_Media.exe.exe
      "C:\Users\Admin\AppData\Local\Temp\VLC_Media.exe.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4656
      • 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\VLC_Media.exe.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2788
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VLC_Media.exe.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4624
      • 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\VLC_Media.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4996
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VLC_Media.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3380

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

    d0a4a3b9a52b8fe3b019f6cd0ef3dad6

    SHA1

    fed70ce7834c3b97edbd078eccda1e5effa527cd

    SHA256

    21942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31

    SHA512

    1a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b

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

    Filesize

    944B

    MD5

    80b42fe4c6cf64624e6c31e5d7f2d3b3

    SHA1

    1f93e7dd83b86cb900810b7e3e43797868bf7d93

    SHA256

    ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d

    SHA512

    83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573

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

    Filesize

    944B

    MD5

    a6d433375d7021a44c11e271e5f4ce8a

    SHA1

    10380ef4f800be9be4d39a280896825ba3fa5153

    SHA256

    2f794e76611f45c4777264da515167929949bc7fbdbe1a5181ae13fa9ad58296

    SHA512

    3cffa0bf0ce06320008b379684b0ebcfc5ab658a0222f72b5afd0dfb8d510e24b6295f48a500e8bca7e64d03e98331b226599320a58ce3019e9c437a6fbc621e

  • C:\Users\Admin\AppData\Local\Temp\VLC_Media.exe.exe

    Filesize

    176KB

    MD5

    a9376f54dd83bf547f6188f8904ae3af

    SHA1

    85bb802b0ade5b2136c83e6217a2aaace3735edc

    SHA256

    44661d9d0df9aa2e03844719c9e6963a738e431c565f0983d309a0e113508d17

    SHA512

    71a4e6251e201441ccc1ae9633790b977a898e6f42b0d25f4c54d66d99311dad5b63e25f7ac703e932db5a526290f95e9abfe2158b72cd21e8564ac1942a48a9

  • C:\Users\Admin\AppData\Local\Temp\XWorm V5.4.exe

    Filesize

    13.8MB

    MD5

    efb0528d6978337e964d999dacb621df

    SHA1

    244979b8495d3d173a4359d62ad771f99a0033fc

    SHA256

    4786ac3ceb9ecdcb98bdd19a0e93750e6c9c0df460751994840f8ea9733cc491

    SHA512

    4b16aca5638094741a9e5f0e4581b5c3cdbd77835035362468d2a0e077fba0f96b8dd98c4a4ea853b3b623d5b525fe64091daa1b761597b660840a371fbae0df

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_41ti2xil.xhw.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\ogpXG\ogpXG.dll

    Filesize

    112KB

    MD5

    2f1a50031dcf5c87d92e8b2491fdcea6

    SHA1

    71e2aaa2d1bb7dbe32a00e1d01d744830ecce08f

    SHA256

    47578a37901c82f66e4dba47acd5c3cab6d09c9911d16f5ad0413275342147ed

    SHA512

    1c66dbe1320c1a84023bdf77686a2a7ab79a3e86ba5a4ea2cda9a37f8a916137d5cfec30b28ceae181355f6f279270465ef63ae90b7e8dcd4c1a8198a7fd36a8

  • memory/2788-38-0x0000015C69930000-0x0000015C69952000-memory.dmp

    Filesize

    136KB

  • memory/3248-0-0x00007FFEC42D3000-0x00007FFEC42D5000-memory.dmp

    Filesize

    8KB

  • memory/3248-1-0x00000000002F0000-0x0000000001120000-memory.dmp

    Filesize

    14.2MB

  • memory/4464-35-0x000002195F350000-0x000002195FF3E000-memory.dmp

    Filesize

    11.9MB

  • memory/4464-36-0x00007FFEC42D0000-0x00007FFEC4D92000-memory.dmp

    Filesize

    10.8MB

  • memory/4464-27-0x0000021942E70000-0x0000021943C50000-memory.dmp

    Filesize

    13.9MB

  • memory/4464-26-0x00007FFEC42D0000-0x00007FFEC4D92000-memory.dmp

    Filesize

    10.8MB

  • memory/4656-28-0x00007FFEC42D0000-0x00007FFEC4D92000-memory.dmp

    Filesize

    10.8MB

  • memory/4656-25-0x0000000000B40000-0x0000000000B72000-memory.dmp

    Filesize

    200KB

  • memory/4656-83-0x00007FFEC42D0000-0x00007FFEC4D92000-memory.dmp

    Filesize

    10.8MB