Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/04/2024, 11:27

General

  • Target

    447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759.exe

  • Size

    63KB

  • MD5

    c1ade258f05c512e98ebc4d9d1165f8a

  • SHA1

    acf20f6a7dc7841ae06f801b887289fdc99e0488

  • SHA256

    447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

  • SHA512

    5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076

  • SSDEEP

    1536:SaKFoNbEkySYKumUYFOy5biAPY0JG4aRjnl7RUr+TG5x:SawoNbEkAKumUYFD5biF0JejxSsCx

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Exodus_Market

C2

leetboy.dynuddns.net:1339

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchos.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Async RAT payload 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759.exe
    "C:\Users\Admin\AppData\Local\Temp\447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3176
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3916
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:624
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp42E5.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2204
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1196
      • C:\Users\Admin\AppData\Roaming\svchos.exe
        "C:\Users\Admin\AppData\Roaming\svchos.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3428

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp42E5.tmp.bat

    Filesize

    150B

    MD5

    ecdc16c0a2869c185de63ddf163f264a

    SHA1

    45a548f97abd016b1fdb7f1086029ccc6cc74a8b

    SHA256

    8bee01464cfdb8b2524fcf30f4cf3fe3a09b9cd409387b0c121862654b9de98c

    SHA512

    5164b7c7865c7f72f8f1ad7dd97f4ec5cb95be47f07d34b11739420853010b79096c1e5c6e9f8b1147328f16bbfba805cbee097af376a5dc3c0173ee2d97cc07

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

    Filesize

    63KB

    MD5

    c1ade258f05c512e98ebc4d9d1165f8a

    SHA1

    acf20f6a7dc7841ae06f801b887289fdc99e0488

    SHA256

    447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

    SHA512

    5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076

  • memory/3176-3-0x0000000004FE0000-0x000000000507C000-memory.dmp

    Filesize

    624KB

  • memory/3176-0-0x00000000005D0000-0x00000000005E6000-memory.dmp

    Filesize

    88KB

  • memory/3176-2-0x0000000004FD0000-0x0000000004FE0000-memory.dmp

    Filesize

    64KB

  • memory/3176-9-0x0000000075420000-0x0000000075BD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3176-1-0x0000000075420000-0x0000000075BD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3428-13-0x0000000075390000-0x0000000075B40000-memory.dmp

    Filesize

    7.7MB

  • memory/3428-14-0x0000000000920000-0x0000000000930000-memory.dmp

    Filesize

    64KB

  • memory/3428-15-0x0000000005110000-0x00000000056B4000-memory.dmp

    Filesize

    5.6MB

  • memory/3428-16-0x0000000004D40000-0x0000000004DD2000-memory.dmp

    Filesize

    584KB

  • memory/3428-17-0x0000000004D30000-0x0000000004D3A000-memory.dmp

    Filesize

    40KB

  • memory/3428-18-0x0000000075390000-0x0000000075B40000-memory.dmp

    Filesize

    7.7MB

  • memory/3428-19-0x0000000000920000-0x0000000000930000-memory.dmp

    Filesize

    64KB