Analysis

  • max time kernel
    145s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/01/2024, 06:23

General

  • Target

    6ef384d982b8fe6de471207bf7efa7d1.exe

  • Size

    1000KB

  • MD5

    6ef384d982b8fe6de471207bf7efa7d1

  • SHA1

    1fa26e5484ed366d7749696d686aaf2136696197

  • SHA256

    04146a5e5ccf0038e5b3a8c3bf3880493f19d99c03400af0f7ecacb0d9ef1ac0

  • SHA512

    8b0c5d55b524512f08a2d11177a18d6e2ea27ac748fddc21d42263c249996bf677d6ec7c82cf5b3e643f80be84a0f15a92286e53b5b4a07fdb8130b7c145da09

  • SSDEEP

    24576:6o2A4d1/VD4y4ZcN9qUxtJU2PfjCQUWM/NJKaoo:9by/VD34M91xE2upLJKlo

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:2245

127.0.0.1:2256

fresh01.ddns.net:2245

fresh01.ddns.net:2256

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • 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 1 IoCs

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

  • 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.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
    "C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3936
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mdHFZnJnjYruf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF81B.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2804
    • C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
      "C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"
      2⤵
        PID:4596
      • C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe
        "C:\Users\Admin\AppData\Local\Temp\6ef384d982b8fe6de471207bf7efa7d1.exe"
        2⤵
          PID:2876

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmpF81B.tmp

              Filesize

              1KB

              MD5

              21a8fcc17a2343715c1751a8f15c8ed2

              SHA1

              f2425e1301b213da7747dd76989087249396fa79

              SHA256

              10e5c505295fb9f4d1a041fecfe233bee3b6755dfadd3fe5acd3d887ce2c811d

              SHA512

              7be8d7e7f369eb93e2cfd6997f6bd6850e4c00b83705bdc0a21d313d74f352c5c67303a180f691c0a28f2b3a700921fde58487ea2aa5fe635f1dcc89b1ea6b9b

            • memory/2876-22-0x0000000074870000-0x0000000075020000-memory.dmp

              Filesize

              7.7MB

            • memory/2876-21-0x0000000005310000-0x0000000005320000-memory.dmp

              Filesize

              64KB

            • memory/2876-19-0x0000000074870000-0x0000000075020000-memory.dmp

              Filesize

              7.7MB

            • memory/2876-17-0x0000000000400000-0x0000000000412000-memory.dmp

              Filesize

              72KB

            • memory/3936-4-0x0000000004F60000-0x0000000004FFC000-memory.dmp

              Filesize

              624KB

            • memory/3936-6-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

              Filesize

              40KB

            • memory/3936-7-0x0000000007BF0000-0x0000000007C0A000-memory.dmp

              Filesize

              104KB

            • memory/3936-8-0x0000000074870000-0x0000000075020000-memory.dmp

              Filesize

              7.7MB

            • memory/3936-9-0x00000000051C0000-0x00000000051D0000-memory.dmp

              Filesize

              64KB

            • memory/3936-10-0x0000000005240000-0x00000000052C4000-memory.dmp

              Filesize

              528KB

            • memory/3936-11-0x0000000005140000-0x0000000005152000-memory.dmp

              Filesize

              72KB

            • memory/3936-5-0x00000000051C0000-0x00000000051D0000-memory.dmp

              Filesize

              64KB

            • memory/3936-0-0x00000000003D0000-0x00000000004D0000-memory.dmp

              Filesize

              1024KB

            • memory/3936-20-0x0000000074870000-0x0000000075020000-memory.dmp

              Filesize

              7.7MB

            • memory/3936-3-0x0000000004EC0000-0x0000000004F52000-memory.dmp

              Filesize

              584KB

            • memory/3936-2-0x00000000055D0000-0x0000000005B74000-memory.dmp

              Filesize

              5.6MB

            • memory/3936-1-0x0000000074870000-0x0000000075020000-memory.dmp

              Filesize

              7.7MB