Analysis

  • max time kernel
    286s
  • max time network
    297s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-12-2024 16:30

General

  • Target

    VixenLoader.exe

  • Size

    38.3MB

  • MD5

    42660a451f750c72df213ed8b234da84

  • SHA1

    57d610944313b20cec5918d8e4a482eebbe45beb

  • SHA256

    6d2cf58460eeebc417121afd3d5b0592b88b16f1b115e16aba32049437d05832

  • SHA512

    3843a449128f6be9ec4cfaee84c6c9c323b79bdfd22c9cf582c7f563c125db66fd12ae9324af197265e0da6faf30cb2a5a9e966c9343d9d098b0a8a38c655526

  • SSDEEP

    786432:73skHahOcCzPA18A/Fk+SfyNqDOjM8VzG4j9rL5nUbVOtsa:zmhQ4iA/eVrCtzGoZ1Ug

Malware Config

Extracted

Family

xworm

Version

5.0

C2

play-treatments.gl.at.ply.gg:50330

Mutex

0JSF3VLcLKVr7CJP

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    System.exe

aes.plain

Signatures

  • Detect Xworm Payload 5 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • 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 8 IoCs
  • Loads dropped DLL 4 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\VixenLoader.exe
    "C:\Users\Admin\AppData\Local\Temp\VixenLoader.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Users\Admin\AppData\Local\Temp\Registry.exe
      "C:\Users\Admin\AppData\Local\Temp\Registry.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\Users\Admin\AppData\Local\Temp\onefile_2812_133786674306874000\Stub.exe
        C:\Users\Admin\AppData\Local\Temp\Registry.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2828
    • C:\Users\Admin\AppData\Local\Temp\System.exe
      "C:\Users\Admin\AppData\Local\Temp\System.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1192
      • 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\System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2608
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2732
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3000
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:464
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System" /tr "C:\ProgramData\System.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:756
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {E279806D-5DFE-434A-93B0-69D64713E7B0} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2420
    • C:\ProgramData\System.exe
      C:\ProgramData\System.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1108
    • C:\ProgramData\System.exe
      C:\ProgramData\System.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:376
    • C:\ProgramData\System.exe
      C:\ProgramData\System.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2548
    • C:\ProgramData\System.exe
      C:\ProgramData\System.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1292
    • C:\ProgramData\System.exe
      C:\ProgramData\System.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1540

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\onefile_2812_133786674306874000\python310.dll

    Filesize

    4.3MB

    MD5

    e4533934b37e688106beac6c5919281e

    SHA1

    ada39f10ef0bbdcf05822f4260e43d53367b0017

    SHA256

    2bf761bae584ba67d9a41507b45ebd41ab6ae51755b1782496d0bc60cc1d41d5

    SHA512

    fa681a48ddd81854c9907026d4f36b008e509729f1d9a18a621f1d86cd1176c1a1ff4f814974306fa4d9e3886e2ce112a4f79b66713e1401f5dae4bcd8b898b9

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\4A1F0GYWB4LQELIMUVHI.temp

    Filesize

    7KB

    MD5

    a2900bf5618e6dc31ac28b952c3fe21f

    SHA1

    bfa9b1d66c6e4d4e87c74d8ad7ef918b256e4a63

    SHA256

    b0c6fa9c6d0529016daf3a05a7928884d6c7421efed22eaeeaed323ac402fa1e

    SHA512

    7b1fa59c11c84fda4336fedf8134d62118a87b917b5fd2409a08cf5b7d6b65fb16f2c08549b99393d43f62a2e764ec76cf4cf0d05700b39cb47c1715a3420d25

  • \Users\Admin\AppData\Local\Temp\Registry.exe

    Filesize

    38.2MB

    MD5

    b4c97238cbd3eef2220646a06ad12d3d

    SHA1

    448cd7706447ec684ddbdfa86298ab7ebe2b5d37

    SHA256

    1b2e36cb8bece957248db97bae8a1ea60c606a968da4ec1b8ef7bd740a3d30ab

    SHA512

    d823a9c84e93946b139ba771c4ab9b9a46236689f4140712d6c122517660225e9cb927dd0be79d7e4920b5cf567daf124d67ae714a99952f26434a2b887bf8cc

  • \Users\Admin\AppData\Local\Temp\System.exe

    Filesize

    39KB

    MD5

    dda376d12dabb5271a3678e378fe5b11

    SHA1

    91711a77680345ef75c1ca6b0c5f46fc5afc9044

    SHA256

    f59efc57c51f6605eed29422e8c97c0d1098d6e920a9a89957625f08785160e1

    SHA512

    7166ad32241e4b7534cc619943369f8daf3daf8e85ff2f2ce96551ad712930bcca3db534470d435448280b342bb380a84c7d52619ccd4932ccc6b786e4ecc03f

  • memory/376-109-0x0000000001150000-0x0000000001160000-memory.dmp

    Filesize

    64KB

  • memory/1108-106-0x00000000008C0000-0x00000000008D0000-memory.dmp

    Filesize

    64KB

  • memory/1192-21-0x0000000000DC0000-0x0000000000DD0000-memory.dmp

    Filesize

    64KB

  • memory/1292-112-0x00000000011A0000-0x00000000011B0000-memory.dmp

    Filesize

    64KB

  • memory/2608-50-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

    Filesize

    2.9MB

  • memory/2608-51-0x00000000026E0000-0x00000000026E8000-memory.dmp

    Filesize

    32KB

  • memory/2732-58-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

    Filesize

    32KB

  • memory/2732-57-0x000000001B770000-0x000000001BA52000-memory.dmp

    Filesize

    2.9MB