Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/04/2024, 11:27

General

  • Target

    5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f.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 3 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 49 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f.exe
    "C:\Users\Admin\AppData\Local\Temp\5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2960
    • 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:3040
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
        3⤵
          PID:2548
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2700
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
          3⤵
            PID:2712
        • 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:2144
          • 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:2424
            • 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:2136
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp35DF.tmp.bat""
            3⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2900
            • C:\Windows\SysWOW64\timeout.exe
              timeout 3
              4⤵
              • Delays execution with timeout.exe
              PID:308
            • 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:764

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp35DF.tmp.bat

        Filesize

        150B

        MD5

        243d7a1f9e26bb0287f93f639f88edf9

        SHA1

        7adff0b796ccfc3cdb70aa6cf0e1c1ee173dfd22

        SHA256

        09323dc20ed1d5465513490acd5e067851814cb7bb750d83ba5e92470a90995e

        SHA512

        0a68a4428e889dccc5a0d1986ba6eff1a0980f4b267a66350d2696d906112e0080c3a0c1904d24d88974a403dc29f4e2f4e543e8c3ca0271f1adeb9d239cae2f

      • \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/764-60-0x00000000747C0000-0x0000000074EAE000-memory.dmp

        Filesize

        6.9MB

      • memory/764-64-0x00000000747C0000-0x0000000074EAE000-memory.dmp

        Filesize

        6.9MB

      • memory/764-61-0x0000000004300000-0x0000000004340000-memory.dmp

        Filesize

        256KB

      • memory/764-59-0x0000000000190000-0x00000000001A6000-memory.dmp

        Filesize

        88KB

      • memory/2144-14-0x00000000009C0000-0x00000000009D6000-memory.dmp

        Filesize

        88KB

      • memory/2144-16-0x00000000747C0000-0x0000000074EAE000-memory.dmp

        Filesize

        6.9MB

      • memory/2144-55-0x00000000747C0000-0x0000000074EAE000-memory.dmp

        Filesize

        6.9MB

      • memory/2144-44-0x0000000000980000-0x00000000009C0000-memory.dmp

        Filesize

        256KB

      • memory/2548-19-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2548-21-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2548-25-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2548-23-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2700-39-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2700-62-0x00000000747C0000-0x0000000074EAE000-memory.dmp

        Filesize

        6.9MB

      • memory/2700-42-0x00000000747C0000-0x0000000074EAE000-memory.dmp

        Filesize

        6.9MB

      • memory/2700-43-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

        Filesize

        256KB

      • memory/2700-41-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2700-45-0x0000000077B10000-0x0000000077B11000-memory.dmp

        Filesize

        4KB

      • memory/2700-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2700-36-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/2700-63-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

        Filesize

        256KB

      • memory/3040-38-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

        Filesize

        9.9MB

      • memory/3040-15-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

        Filesize

        9.9MB

      • memory/3040-17-0x000000001B350000-0x000000001B3D0000-memory.dmp

        Filesize

        512KB

      • memory/3040-18-0x00000000006D0000-0x000000000073A000-memory.dmp

        Filesize

        424KB

      • memory/3040-13-0x00000000008F0000-0x00000000008FC000-memory.dmp

        Filesize

        48KB