Analysis

  • max time kernel
    133s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-08-2024 18:28

General

  • Target

    0b657c945d9ebee7f0b8a48be6f1abf4b9dbf2c0c609fc8030818a2229dd175e.exe

  • Size

    74KB

  • MD5

    3ef6a6f8a984c661f58c373081986213

  • SHA1

    13f18179a85ae650bcfa70b47d027b0b3fe84d6e

  • SHA256

    0b657c945d9ebee7f0b8a48be6f1abf4b9dbf2c0c609fc8030818a2229dd175e

  • SHA512

    e7c6bc2b7e4d5d252b4b05628cab64007e5c0cec15657ee533ec78c7cd4546afb27df7b5b6be82b5d8bda085b93463dadaae41b74ccd6061b0ee7b2f68de27df

  • SSDEEP

    1536:SUdccxlfNC86PMVme9VdQuDI6H1bf/g+4oQzcq7VclN:SUecxlFT6PMVme9VdQsH1bf4ZoQ7xY

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

fwlmnhzadxk

Attributes
  • delay

    1

  • install

    true

  • install_file

    %AppData%.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/w5QC7zcd

aes.plain

Signatures

  • AsyncRat

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

  • VenomRAT 1 IoCs

    Detects VenomRAT.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0b657c945d9ebee7f0b8a48be6f1abf4b9dbf2c0c609fc8030818a2229dd175e.exe
    "C:\Users\Admin\AppData\Local\Temp\0b657c945d9ebee7f0b8a48be6f1abf4b9dbf2c0c609fc8030818a2229dd175e.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3900
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "%AppData%" /tr '"C:\Users\Admin\AppData\Roaming\%AppData%.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4468
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "C:\Users\Admin\AppData\Roaming" /tr '"C:\Users\Admin\AppData\Roaming\C:\Users\Admin\AppData\Roaming.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3708
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7FBF.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3284
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:5000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7FBF.tmp.bat

    Filesize

    153B

    MD5

    527f6a13f5c8a68c70fa51c0816662fd

    SHA1

    8ba897737da1d66c49c33249b5ee817e8920954b

    SHA256

    d6e24ea9630fe2d54d2fe03173af2bc7e056dbabf21d24ebf58bc379ef410748

    SHA512

    f4192c7807084b50620c0dfd8133c12fd6ae99b20acb9c1a3905fa92ea874d5a084318089bc3c403f255b831d94e6fa1d739979b79d7daef7dfcc39bd7491219

  • memory/3900-0-0x00000000747DE000-0x00000000747DF000-memory.dmp

    Filesize

    4KB

  • memory/3900-1-0x00000000006A0000-0x00000000006B8000-memory.dmp

    Filesize

    96KB

  • memory/3900-2-0x0000000005700000-0x0000000005CA4000-memory.dmp

    Filesize

    5.6MB

  • memory/3900-4-0x00000000747D0000-0x0000000074F80000-memory.dmp

    Filesize

    7.7MB

  • memory/3900-5-0x00000000747D0000-0x0000000074F80000-memory.dmp

    Filesize

    7.7MB

  • memory/3900-10-0x00000000747D0000-0x0000000074F80000-memory.dmp

    Filesize

    7.7MB