Analysis

  • max time kernel
    149s
  • max time network
    151s
  • 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 05:03

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 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\XWORM-V5.4.exe
    "C:\Users\Admin\AppData\Local\Temp\XWORM-V5.4.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2020
    • 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:2324
    • 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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4808
      • 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:456
      • 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:1916
      • 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:3204
      • 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:1276

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

    6d42b6da621e8df5674e26b799c8e2aa

    SHA1

    ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

    SHA256

    5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

    SHA512

    53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

    Filesize

    944B

    MD5

    a2c8179aaa149c0b9791b73ce44c04d1

    SHA1

    703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

    SHA256

    c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

    SHA512

    2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

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

    Filesize

    944B

    MD5

    dbb22d95851b93abf2afe8fb96a8e544

    SHA1

    920ec5fdb323537bcf78f7e29a4fc274e657f7a4

    SHA256

    e1ee9af6b9e3bfd41b7d2c980580bb7427883f1169ed3df4be11293ce7895465

    SHA512

    16031134458bf312509044a3028be46034c544163c4ca956aee74d2075fbeb5873754d2254dc1d0b573ce1a644336ac4c8bd7147aba100bfdac8c504900ef3fc

  • 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_2qpzbb1z.yxe.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/456-48-0x000002526E6A0000-0x000002526E6C2000-memory.dmp

    Filesize

    136KB

  • memory/2020-1-0x0000000000F30000-0x0000000001D60000-memory.dmp

    Filesize

    14.2MB

  • memory/2020-0-0x00007FF990A23000-0x00007FF990A25000-memory.dmp

    Filesize

    8KB

  • memory/2324-36-0x000001FAE5810000-0x000001FAE63FE000-memory.dmp

    Filesize

    11.9MB

  • memory/2324-37-0x00007FF990A20000-0x00007FF9914E1000-memory.dmp

    Filesize

    10.8MB

  • memory/2324-35-0x00007FF990A20000-0x00007FF9914E1000-memory.dmp

    Filesize

    10.8MB

  • memory/2324-25-0x000001FAC95C0000-0x000001FACA3A0000-memory.dmp

    Filesize

    13.9MB

  • memory/2324-27-0x00007FF990A20000-0x00007FF9914E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4808-38-0x00007FF990A20000-0x00007FF9914E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4808-28-0x00007FF990A20000-0x00007FF9914E1000-memory.dmp

    Filesize

    10.8MB

  • memory/4808-26-0x0000000000930000-0x0000000000962000-memory.dmp

    Filesize

    200KB

  • memory/4808-89-0x00007FF990A20000-0x00007FF9914E1000-memory.dmp

    Filesize

    10.8MB