Analysis

  • max time kernel
    141s
  • max time network
    156s
  • 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, 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
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 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 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\go.exe
    "C:\Users\Admin\AppData\Local\Temp\go.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3668
    • 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:3356
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:656
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
        3⤵
          PID:5116
      • C:\Users\Admin\AppData\Local\Temp\start.exe
        "C:\Users\Admin\AppData\Local\Temp\start.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1992
        • 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:4480
          • 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:1116
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3E9A.tmp.bat""
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4516
          • C:\Windows\SysWOW64\timeout.exe
            timeout 3
            4⤵
            • Delays execution with timeout.exe
            PID:2360
          • 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:4476
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3972 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:2536

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        442KB

        MD5

        8cd2675e19a8b1dccf0dbf082f42ab33

        SHA1

        3b6a8a51f53d8ec6e773f2a28f80fb003311597b

        SHA256

        392ca70b63b6db8e0dc3aab0b6506169d5d9d2cad36598d037794be5a82bec09

        SHA512

        b4260fe93196d71f38ab386a17db0ac91a1116ef155771f789579d3150b4c74abb23f289bc042ced1fe7b905f1f1645435837223b3ca331d1e1d55c7eb4a5711

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

        Filesize

        63KB

        MD5

        c1ade258f05c512e98ebc4d9d1165f8a

        SHA1

        acf20f6a7dc7841ae06f801b887289fdc99e0488

        SHA256

        447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

        SHA512

        5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076

      • C:\Users\Admin\AppData\Local\Temp\tmp3E9A.tmp.bat

        Filesize

        150B

        MD5

        cdbc760d8d749db47f4317c336c05d43

        SHA1

        d40fb4cdee015e750d21503fd775a4b851dce354

        SHA256

        3bbd9784ad469fa8e6eece6a14021b943ff50f27e893a8d6d315690ecfa60ae7

        SHA512

        8805e175a559d72be4290f3aea1785d8ef6f64e3f4fb0be8b0165eeb2402cc6d97ed64bde54448974275f089dc4944436e4c8a37aeca4c70a64634bbb7c52763

      • memory/656-29-0x0000000074DA0000-0x0000000075550000-memory.dmp

        Filesize

        7.7MB

      • memory/656-49-0x0000000074DA0000-0x0000000075550000-memory.dmp

        Filesize

        7.7MB

      • memory/656-28-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/656-34-0x0000000077711000-0x0000000077712000-memory.dmp

        Filesize

        4KB

      • memory/656-31-0x00000000031B0000-0x00000000031C0000-memory.dmp

        Filesize

        64KB

      • memory/656-50-0x00000000031B0000-0x00000000031C0000-memory.dmp

        Filesize

        64KB

      • memory/1992-40-0x0000000074DA0000-0x0000000075550000-memory.dmp

        Filesize

        7.7MB

      • memory/1992-25-0x0000000074DA0000-0x0000000075550000-memory.dmp

        Filesize

        7.7MB

      • memory/1992-26-0x00000000004D0000-0x00000000004E6000-memory.dmp

        Filesize

        88KB

      • memory/1992-30-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

        Filesize

        64KB

      • memory/1992-33-0x0000000005260000-0x00000000052FC000-memory.dmp

        Filesize

        624KB

      • memory/3356-32-0x00007FFE6D0C0000-0x00007FFE6DB81000-memory.dmp

        Filesize

        10.8MB

      • memory/3356-27-0x000002886C700000-0x000002886C76A000-memory.dmp

        Filesize

        424KB

      • memory/3356-24-0x000002886C7B0000-0x000002886C7C0000-memory.dmp

        Filesize

        64KB

      • memory/3356-23-0x00007FFE6D0C0000-0x00007FFE6DB81000-memory.dmp

        Filesize

        10.8MB

      • memory/3356-19-0x000002886A280000-0x000002886A28C000-memory.dmp

        Filesize

        48KB

      • memory/4476-44-0x0000000074DA0000-0x0000000075550000-memory.dmp

        Filesize

        7.7MB

      • memory/4476-45-0x0000000005600000-0x0000000005610000-memory.dmp

        Filesize

        64KB

      • memory/4476-46-0x0000000006200000-0x00000000067A4000-memory.dmp

        Filesize

        5.6MB

      • memory/4476-47-0x0000000005DF0000-0x0000000005E82000-memory.dmp

        Filesize

        584KB

      • memory/4476-48-0x0000000005DC0000-0x0000000005DCA000-memory.dmp

        Filesize

        40KB

      • memory/4476-51-0x0000000074DA0000-0x0000000075550000-memory.dmp

        Filesize

        7.7MB

      • memory/4476-52-0x0000000005600000-0x0000000005610000-memory.dmp

        Filesize

        64KB