Analysis

  • max time kernel
    144s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/04/2024, 12:02

General

  • Target

    go.exe

  • Size

    510KB

  • MD5

    7f264ba8e4c519ce90c6e3b430945476

  • SHA1

    4e18269b4c70931dcad3f7ca58e4f5db00411549

  • SHA256

    5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f

  • SHA512

    3959fa9aad11f6718caa9404cf51cd53809d165436790109dbcf15b04ccd60335dbc824ce5e1ec0fd762c4ac69c6fb3518bc13c8a953c08cce4b7c0cb41b2cc6

  • SSDEEP

    6144:rKeacbD2RU5+csDgVortcBiWg3cPXblkqDHd16Z6Zm5rULuW1+inHsvzUHFYWg5l:r3y1/D+McxaZvkL1pHyzWPp4xje9

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

Extracted

Family

asyncrat

Version

5.0.5

Botnet

WDKILLER

C2

blue.o7lab.me:4449

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    false

  • 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
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 8 IoCs
  • Suspicious use of SetThreadContext 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\go.exe
    "C:\Users\Admin\AppData\Local\Temp\go.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Users\Admin\AppData\Local\Temp\pop3.exe
      "C:\Users\Admin\AppData\Local\Temp\pop3.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2864
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2640
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2864 -s 720
        3⤵
        • Loads dropped DLL
        PID:2776
    • C:\Users\Admin\AppData\Local\Temp\start.exe
      "C:\Users\Admin\AppData\Local\Temp\start.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2492
      • 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
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2400
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"'
          4⤵
          • Creates scheduled task(s)
          PID:2364
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6401.tmp.bat""
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2836
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • Delays execution with timeout.exe
          PID:1872
        • C:\Users\Admin\AppData\Roaming\svchos.exe
          "C:\Users\Admin\AppData\Roaming\svchos.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp6401.tmp.bat

    Filesize

    150B

    MD5

    c3ecc0ada93692cb3613e91f0d74e0eb

    SHA1

    935b915704a5a63dd87dc32e2aac5f1cd5852115

    SHA256

    49dec77638e606b9f46247652aa6607531abed6666bf561e97ae8f28cf0fa35c

    SHA512

    90ca70cb5d692dc3124764d64d137e36495d91872bd9953d1c8b09c090d4ab24d1fd44557b444724c09c19e9cf25816e7dd26d70467fcb9813de5af89a7d1d0f

  • \Users\Admin\AppData\Local\Temp\pop3.exe

    Filesize

    442KB

    MD5

    8cd2675e19a8b1dccf0dbf082f42ab33

    SHA1

    3b6a8a51f53d8ec6e773f2a28f80fb003311597b

    SHA256

    392ca70b63b6db8e0dc3aab0b6506169d5d9d2cad36598d037794be5a82bec09

    SHA512

    b4260fe93196d71f38ab386a17db0ac91a1116ef155771f789579d3150b4c74abb23f289bc042ced1fe7b905f1f1645435837223b3ca331d1e1d55c7eb4a5711

  • \Users\Admin\AppData\Local\Temp\start.exe

    Filesize

    63KB

    MD5

    c1ade258f05c512e98ebc4d9d1165f8a

    SHA1

    acf20f6a7dc7841ae06f801b887289fdc99e0488

    SHA256

    447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

    SHA512

    5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076

  • memory/2492-46-0x0000000073F40000-0x000000007462E000-memory.dmp

    Filesize

    6.9MB

  • memory/2492-34-0x0000000001EF0000-0x0000000001F30000-memory.dmp

    Filesize

    256KB

  • memory/2492-15-0x00000000003C0000-0x00000000003D6000-memory.dmp

    Filesize

    88KB

  • memory/2492-16-0x0000000073F40000-0x000000007462E000-memory.dmp

    Filesize

    6.9MB

  • memory/2640-19-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-44-0x0000000076F80000-0x0000000076F81000-memory.dmp

    Filesize

    4KB

  • memory/2640-20-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-21-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-22-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2640-24-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-26-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-28-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2640-29-0x0000000073F40000-0x000000007462E000-memory.dmp

    Filesize

    6.9MB

  • memory/2640-55-0x0000000073F40000-0x000000007462E000-memory.dmp

    Filesize

    6.9MB

  • memory/2640-56-0x0000000004DF0000-0x0000000004E30000-memory.dmp

    Filesize

    256KB

  • memory/2808-50-0x00000000002E0000-0x00000000002F6000-memory.dmp

    Filesize

    88KB

  • memory/2808-51-0x0000000073F40000-0x000000007462E000-memory.dmp

    Filesize

    6.9MB

  • memory/2808-53-0x0000000004920000-0x0000000004960000-memory.dmp

    Filesize

    256KB

  • memory/2808-57-0x0000000073F40000-0x000000007462E000-memory.dmp

    Filesize

    6.9MB

  • memory/2808-58-0x0000000004920000-0x0000000004960000-memory.dmp

    Filesize

    256KB

  • memory/2864-18-0x000000001B5B0000-0x000000001B61A000-memory.dmp

    Filesize

    424KB

  • memory/2864-17-0x000000001B1B0000-0x000000001B230000-memory.dmp

    Filesize

    512KB

  • memory/2864-52-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

    Filesize

    9.9MB

  • memory/2864-54-0x000000001B1B0000-0x000000001B230000-memory.dmp

    Filesize

    512KB

  • memory/2864-14-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

    Filesize

    9.9MB

  • memory/2864-13-0x0000000000ED0000-0x0000000000EDC000-memory.dmp

    Filesize

    48KB