Analysis

  • max time kernel
    144s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-09-2024 14:06

General

  • Target

    XWORM-V5.4.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.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 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\XWORM-V5.4.exe
    "C:\Users\Admin\AppData\Local\Temp\XWORM-V5.4.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1528
    • 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:3056
    • C:\Users\Admin\AppData\Local\Temp\VLC_Media.exe.exe
      "C:\Users\Admin\AppData\Local\Temp\VLC_Media.exe.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2436
      • 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:4712
      • 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:1384
      • 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:884
      • 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:3244

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

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

    Filesize

    944B

    MD5

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

    Filesize

    944B

    MD5

    da5c82b0e070047f7377042d08093ff4

    SHA1

    89d05987cd60828cca516c5c40c18935c35e8bd3

    SHA256

    77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

    SHA512

    7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

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

    Filesize

    944B

    MD5

    98baf5117c4fcec1692067d200c58ab3

    SHA1

    5b33a57b72141e7508b615e17fb621612cb8e390

    SHA256

    30bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51

    SHA512

    344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d

  • 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_bj21zxlz.rna.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

  • C:\Users\Admin\AppData\Local\Temp\tmpDAF5.tmp

    Filesize

    100KB

    MD5

    1b942faa8e8b1008a8c3c1004ba57349

    SHA1

    cd99977f6c1819b12b33240b784ca816dfe2cb91

    SHA256

    555ccb7ecd9ae52a75135fdd81ab443a49d5785b0621ed6468d28c4234e46ccc

    SHA512

    5aee3d59478d41ddd5885c99b394c9c4983064e2b3528db1a3f7fc289662bced4f57d072517bbe7573c6d1789435e987ef1aa9cc91f372bcfd30bc016675fa43

  • memory/1528-0-0x00007FFDBC993000-0x00007FFDBC995000-memory.dmp

    Filesize

    8KB

  • memory/1528-1-0x00000000004C0000-0x00000000012F0000-memory.dmp

    Filesize

    14.2MB

  • memory/2436-28-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/2436-93-0x000000001B730000-0x000000001B76A000-memory.dmp

    Filesize

    232KB

  • memory/2436-36-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/2436-91-0x0000000000EB0000-0x0000000000EBC000-memory.dmp

    Filesize

    48KB

  • memory/2436-90-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/2436-89-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/2436-25-0x00000000006A0000-0x00000000006D2000-memory.dmp

    Filesize

    200KB

  • memory/3056-27-0x00000263D3450000-0x00000263D4230000-memory.dmp

    Filesize

    13.9MB

  • memory/3056-38-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/3056-37-0x00000263EF630000-0x00000263F021E000-memory.dmp

    Filesize

    11.9MB

  • memory/3056-35-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/3056-26-0x00007FFDBC990000-0x00007FFDBD451000-memory.dmp

    Filesize

    10.8MB

  • memory/4712-41-0x00000218EE8E0000-0x00000218EE902000-memory.dmp

    Filesize

    136KB