Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2025 11:29

General

  • Target

    1234rwe.exe

  • Size

    74KB

  • MD5

    f2d0418d8366c6555496da77cccddcee

  • SHA1

    812e7f5741fd7e6ba812eab3b8462b10d0adffbd

  • SHA256

    db08a16f34428dc8c27fa3ad293cac69a200050d94c93ced18b2436cba822b4f

  • SHA512

    e9278138b62923fd5fec1fe805751d1a786931adf45dce53457f4bf0e8af5e19b05321b67904912243c3642da04662e5c9ed89966a5120dd70f7fdabe14bda5c

  • SSDEEP

    1536:ZUxQcxh31CfGPMVKGggyVIrH1bo/JfO/V9QzcQxLVclN:ZUecxhlEGPMVRggygH1bot2V9QlxBY

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

ytgjjhywchk

Attributes
  • delay

    1

  • install

    true

  • install_file

    RealtekHighDefinitionAudio.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/ZrvsMACD

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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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 49 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\1234rwe.exe
    "C:\Users\Admin\AppData\Local\Temp\1234rwe.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1944
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RealtekHighDefinitionAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2664
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "RealtekHighDefinitionAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2200
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpAD4F.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2628
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2504
      • C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe
        "C:\Users\Admin\AppData\Roaming\RealtekHighDefinitionAudio.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAD4F.tmp.bat

    Filesize

    170B

    MD5

    d46e08049d6f8143765294ddf801437a

    SHA1

    5e22c898e6550818fca8085ac97334d97462f4a4

    SHA256

    bd64d372374181f36b4c0ae6a70741037ec69224d7df1b3240dc0f7a98d604f8

    SHA512

    3f44638c671ece999319d1ba517a90d045e1d5aa60a40aa3224dd791d1ee2a6c88fa2206bcc97bf5706b825c58974fece2af72d6ad7513e26396886a1e39bd52

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

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

    Filesize

    74KB

    MD5

    f2d0418d8366c6555496da77cccddcee

    SHA1

    812e7f5741fd7e6ba812eab3b8462b10d0adffbd

    SHA256

    db08a16f34428dc8c27fa3ad293cac69a200050d94c93ced18b2436cba822b4f

    SHA512

    e9278138b62923fd5fec1fe805751d1a786931adf45dce53457f4bf0e8af5e19b05321b67904912243c3642da04662e5c9ed89966a5120dd70f7fdabe14bda5c

  • memory/1944-0-0x000007FEF4E33000-0x000007FEF4E34000-memory.dmp

    Filesize

    4KB

  • memory/1944-1-0x0000000001330000-0x0000000001348000-memory.dmp

    Filesize

    96KB

  • memory/1944-3-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

    Filesize

    9.9MB

  • memory/1944-12-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

    Filesize

    9.9MB

  • memory/1944-14-0x000007FEF4E30000-0x000007FEF581C000-memory.dmp

    Filesize

    9.9MB

  • memory/2976-18-0x0000000000AB0000-0x0000000000AC8000-memory.dmp

    Filesize

    96KB