Analysis

  • max time kernel
    94s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-06-2024 17:39

General

  • Target

    ClientAny.exe

  • Size

    90KB

  • MD5

    51a43245ecf3a5f9871d4e2003a36032

  • SHA1

    14f0576f0639189c6252467aba08eb8d8e557578

  • SHA256

    f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32

  • SHA512

    68ebffa51c9aca71cb4de71d287a434de15dd3f04ffde513631da3bb6f348614bf9e13b99612e90ff07b1d70f05e5732d76457195e8432b4420d08913614b0fe

  • SSDEEP

    1536:uUaUcxoyR1CriPMVzrqVBYgImH1bz/psRo2Qzcxop3KBv3RiDKLVclN:uUDcxoyXkiPMVzrqVHH1bzRahQxUYKBY

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

svchost.exe

C2

127.0.0.1:80

2.58.84.229:80

Mutex

svchost.exe

Attributes
  • delay

    1

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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\ClientAny.exe
    "C:\Users\Admin\AppData\Local\Temp\ClientAny.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3216
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1092
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4812
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp414F.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1088
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1964
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp414F.tmp.bat

    Filesize

    151B

    MD5

    84a195bd64198facdc063570a0ca0248

    SHA1

    7edc45d42fa064b4d5fc4f22cb75df7fdeec2085

    SHA256

    ebd283fbf855416643e2c08fecc11cccefffe1508cdb66e3af07da53d75a1357

    SHA512

    be907960fdd003f3bd727600015890b875211bb89133a62605c07352f1ee956b4cc63640694d5adcf4de92cc6238f9bde9c3721cbb42e3890f78416b1eae9a48

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

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • C:\Users\Admin\AppData\Roaming\svchost.exe

    Filesize

    90KB

    MD5

    51a43245ecf3a5f9871d4e2003a36032

    SHA1

    14f0576f0639189c6252467aba08eb8d8e557578

    SHA256

    f5958eae1d68011fc17a9fbb2f22c18221c36db1984de47a294e274eb4b62f32

    SHA512

    68ebffa51c9aca71cb4de71d287a434de15dd3f04ffde513631da3bb6f348614bf9e13b99612e90ff07b1d70f05e5732d76457195e8432b4420d08913614b0fe

  • memory/3216-0-0x0000000000060000-0x000000000007C000-memory.dmp

    Filesize

    112KB

  • memory/3216-1-0x00007FF816413000-0x00007FF816415000-memory.dmp

    Filesize

    8KB

  • memory/3216-3-0x00007FF816410000-0x00007FF816ED1000-memory.dmp

    Filesize

    10.8MB

  • memory/3216-8-0x00007FF816410000-0x00007FF816ED1000-memory.dmp

    Filesize

    10.8MB

  • memory/3216-9-0x00007FF816410000-0x00007FF816ED1000-memory.dmp

    Filesize

    10.8MB