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Analysis

  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2025, 08:24

General

  • Target

    Client.exe

  • Size

    74KB

  • MD5

    a3b9079cb3f336a8e010a25d943e74a1

  • SHA1

    0b0a82a0e91aa10d032f51c3aca80311a43e62e0

  • SHA256

    e92ae266c9913cbf2c957fd3425e62443a4c75260ad7327d214129c404260d4e

  • SHA512

    b6b23d7f71863c6bb753b256d6b3a053a9860ed09eb1b753faf8520376df54eadecc6f997baf0a4c4c2090274cae9ab751249d1306fece54408f8fcd099ddadc

  • SSDEEP

    1536:cOUAQcxh31CfGPMVGe9VdQuDI6H1bf/UCZbzreQzcaLVclN:cOUlcxhlEGPMVGe9VdQsH1bfbV/eQLBY

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

C2

127.0.0.1:4449

127.0.0.1:7771

127.0.0.1:35044

193.161.193.99:4449

193.161.193.99:7771

193.161.193.99:35044

Mutex

samjkhqsigurr

Attributes
  • delay

    1

  • install

    true

  • install_file

    Microsoft Corporation INC..exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • VenomRAT 3 IoCs

    Detects VenomRAT.

  • Venomrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Delays execution with timeout.exe 1 IoCs
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 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\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2088
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Corporation INC." /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Corporation INC..exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2788
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Corporation INC." /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Corporation INC..exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2844
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3331.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2808
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2580
      • C:\Users\Admin\AppData\Roaming\Microsoft Corporation INC..exe
        "C:\Users\Admin\AppData\Roaming\Microsoft Corporation INC..exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp3331.tmp.bat

    Filesize

    170B

    MD5

    ae34785dadb58aacddaa9047894bb706

    SHA1

    b67db763cce1a64ba0b7facaa28a0d7f813141b7

    SHA256

    53294d8b43c866dea0e355e24bcbbbfb043e45ba2590e4b932f839bfd2181973

    SHA512

    20d8f91333188fa8c981a4068270920827332a9d8b1203219c0c9e800bac1f5ba8d4a2344d2ee2d6ad6c8f6f55658171e9c113f85ede29915c294a70be48d47d

  • C:\Users\Admin\AppData\Roaming\Microsoft Corporation INC..exe

    Filesize

    74KB

    MD5

    a3b9079cb3f336a8e010a25d943e74a1

    SHA1

    0b0a82a0e91aa10d032f51c3aca80311a43e62e0

    SHA256

    e92ae266c9913cbf2c957fd3425e62443a4c75260ad7327d214129c404260d4e

    SHA512

    b6b23d7f71863c6bb753b256d6b3a053a9860ed09eb1b753faf8520376df54eadecc6f997baf0a4c4c2090274cae9ab751249d1306fece54408f8fcd099ddadc

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • memory/2088-0-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

    Filesize

    4KB

  • memory/2088-1-0x0000000001300000-0x0000000001318000-memory.dmp

    Filesize

    96KB

  • memory/2088-3-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2088-4-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2088-13-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

    Filesize

    9.9MB

  • memory/2776-18-0x0000000000C90000-0x0000000000CA8000-memory.dmp

    Filesize

    96KB