Analysis

  • max time kernel
    132s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    12/03/2024, 21:34

General

  • Target

    6bfa0dd8358f29a9201496ffa3a4893480b17328f8ef106e373842776770a36e.exe

  • Size

    320KB

  • MD5

    3f088e75c8dff450bb0eb1d9a8a1c68a

  • SHA1

    779f0f742cd4e1e42f95c4c86e14c2bac5a88397

  • SHA256

    6bfa0dd8358f29a9201496ffa3a4893480b17328f8ef106e373842776770a36e

  • SHA512

    f858234e044960ff862e6c716c159f631384096618955b9c041a2c03c0b70732f00ea4baaf4d96c78045f37e32e389ec27f3c0cc16ee18be01b68935806336c7

  • SSDEEP

    3072:wqQLW3NQGDxLKFvweJvCnKkopganrtvaTVieMhJ3Bj3untI1fE:lXa1vmopganrtvaTVieMT36L

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Dark-20250 - M

C2

bg1.heztak.pro:2202

Mutex

DcRatMutex_qwqdanchun

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#.

  • Detects executables attemping to enumerate video devices using WMI 5 IoCs
  • Detects executables containing the string DcRatBy 5 IoCs
  • Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc. 5 IoCs
  • Detects executables packed with SmartAssembly 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6bfa0dd8358f29a9201496ffa3a4893480b17328f8ef106e373842776770a36e.exe
    "C:\Users\Admin\AppData\Local\Temp\6bfa0dd8358f29a9201496ffa3a4893480b17328f8ef106e373842776770a36e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
        PID:2144
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\AddDate"
        2⤵
          PID:2556
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c schtasks /create /sc minute /mo 10 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\AddDate\AddDate.exe'" /f
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2652
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 10 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\AddDate\AddDate.exe'" /f
            3⤵
            • Creates scheduled task(s)
            PID:2696
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\6bfa0dd8358f29a9201496ffa3a4893480b17328f8ef106e373842776770a36e.exe" "C:\Users\Admin\AppData\Roaming\AddDate\AddDate.exe"
          2⤵
            PID:2680

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2144-6-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-13-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-19-0x00000000744C0000-0x0000000074BAE000-memory.dmp

          Filesize

          6.9MB

        • memory/2144-3-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-4-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-5-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-18-0x0000000000A90000-0x0000000000AD0000-memory.dmp

          Filesize

          256KB

        • memory/2144-9-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-14-0x00000000744C0000-0x0000000074BAE000-memory.dmp

          Filesize

          6.9MB

        • memory/2144-11-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/2144-8-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

          Filesize

          4KB

        • memory/3028-0-0x00000000012B0000-0x00000000012DA000-memory.dmp

          Filesize

          168KB

        • memory/3028-15-0x00000000744C0000-0x0000000074BAE000-memory.dmp

          Filesize

          6.9MB

        • memory/3028-1-0x00000000744C0000-0x0000000074BAE000-memory.dmp

          Filesize

          6.9MB

        • memory/3028-2-0x0000000004AD0000-0x0000000004B10000-memory.dmp

          Filesize

          256KB