Analysis

  • max time kernel
    147s
  • max time network
    158s
  • 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, 13:14

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 2 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 26 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\5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f.exe
    "C:\Users\Admin\AppData\Local\Temp\5157d8d5c583eea41772fb99793e13f9d7e3c3c2b0eb2cd876c65d1835cc8d8f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3292
    • 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:536
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3808
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
        3⤵
          PID:5064
      • 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:4248
        • 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:2552
          • 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:3420
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp91D0.tmp.bat""
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1384
          • C:\Windows\SysWOW64\timeout.exe
            timeout 3
            4⤵
            • Delays execution with timeout.exe
            PID:4948
          • 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:396
    • 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=1404 --field-trial-handle=3488,i,1267426273081718772,6254127258555406296,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:5040

      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\tmp91D0.tmp.bat

        Filesize

        150B

        MD5

        799380b82bcd2097f0b3ec01f168b027

        SHA1

        a2f7f745751869e748a72d5cbc8e8148d05c15d0

        SHA256

        2d629508dfb8dc7efce22bdd72fb9f83cbabcdf7e0f0331026dc667aec4b9ab2

        SHA512

        0d287881600fb00f92bfe3c6948a28373bb7e60b7c5beb51eb086d4cfc8203e9e650846442fe09a2ccad556d76c8c7a2426ae03ab9bd86235d2537feced6d0af

      • memory/396-51-0x0000000004A30000-0x0000000004A40000-memory.dmp

        Filesize

        64KB

      • memory/396-46-0x0000000005180000-0x0000000005212000-memory.dmp

        Filesize

        584KB

      • memory/396-45-0x0000000005590000-0x0000000005B34000-memory.dmp

        Filesize

        5.6MB

      • memory/396-47-0x0000000005220000-0x000000000522A000-memory.dmp

        Filesize

        40KB

      • memory/396-50-0x0000000074880000-0x0000000075030000-memory.dmp

        Filesize

        7.7MB

      • memory/396-44-0x0000000074880000-0x0000000075030000-memory.dmp

        Filesize

        7.7MB

      • memory/536-24-0x00007FFF051D0000-0x00007FFF05C91000-memory.dmp

        Filesize

        10.8MB

      • memory/536-25-0x000001C3B6D70000-0x000001C3B6D80000-memory.dmp

        Filesize

        64KB

      • memory/536-22-0x000001C3B5070000-0x000001C3B507C000-memory.dmp

        Filesize

        48KB

      • memory/536-27-0x000001C3D02E0000-0x000001C3D034A000-memory.dmp

        Filesize

        424KB

      • memory/536-31-0x00007FFF051D0000-0x00007FFF05C91000-memory.dmp

        Filesize

        10.8MB

      • memory/3808-30-0x00000000051A0000-0x00000000051B0000-memory.dmp

        Filesize

        64KB

      • memory/3808-48-0x0000000074880000-0x0000000075030000-memory.dmp

        Filesize

        7.7MB

      • memory/3808-49-0x00000000051A0000-0x00000000051B0000-memory.dmp

        Filesize

        64KB

      • memory/3808-33-0x00000000771F1000-0x00000000771F2000-memory.dmp

        Filesize

        4KB

      • memory/3808-29-0x0000000074880000-0x0000000075030000-memory.dmp

        Filesize

        7.7MB

      • memory/3808-28-0x0000000000400000-0x0000000000416000-memory.dmp

        Filesize

        88KB

      • memory/4248-26-0x0000000074880000-0x0000000075030000-memory.dmp

        Filesize

        7.7MB

      • memory/4248-39-0x0000000074880000-0x0000000075030000-memory.dmp

        Filesize

        7.7MB

      • memory/4248-34-0x0000000005BD0000-0x0000000005C6C000-memory.dmp

        Filesize

        624KB

      • memory/4248-32-0x00000000059C0000-0x00000000059D0000-memory.dmp

        Filesize

        64KB

      • memory/4248-23-0x0000000000F00000-0x0000000000F16000-memory.dmp

        Filesize

        88KB