Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 1 IoCs
  • Detects executables containing the string DcRatBy 1 IoCs
  • Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc. 1 IoCs
  • Detects executables packed with SmartAssembly 1 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 20 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:2396
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
        PID:4764
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\AddDate"
        2⤵
          PID:4308
        • 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:3304
          • 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:4744
        • 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:2716
        • C:\Windows\system32\rundll32.exe
          "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
          1⤵
            PID:3532
          • C:\Windows\System32\svchost.exe
            C:\Windows\System32\svchost.exe -k UnistackSvcGroup
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3632

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/2396-1-0x0000000074880000-0x0000000075030000-memory.dmp

            Filesize

            7.7MB

          • memory/2396-2-0x0000000005160000-0x0000000005170000-memory.dmp

            Filesize

            64KB

          • memory/2396-3-0x0000000005720000-0x0000000005CC4000-memory.dmp

            Filesize

            5.6MB

          • memory/2396-0-0x0000000000800000-0x000000000082A000-memory.dmp

            Filesize

            168KB

          • memory/2396-7-0x0000000074880000-0x0000000075030000-memory.dmp

            Filesize

            7.7MB

          • memory/3632-27-0x0000028140270000-0x0000028140280000-memory.dmp

            Filesize

            64KB

          • memory/3632-47-0x0000028148720000-0x0000028148721000-memory.dmp

            Filesize

            4KB

          • memory/3632-46-0x0000028148610000-0x0000028148611000-memory.dmp

            Filesize

            4KB

          • memory/3632-45-0x0000028148610000-0x0000028148611000-memory.dmp

            Filesize

            4KB

          • memory/3632-43-0x00000281485E0000-0x00000281485E1000-memory.dmp

            Filesize

            4KB

          • memory/3632-11-0x0000028140170000-0x0000028140180000-memory.dmp

            Filesize

            64KB

          • memory/4764-4-0x0000000000400000-0x0000000000412000-memory.dmp

            Filesize

            72KB

          • memory/4764-10-0x0000000005440000-0x0000000005450000-memory.dmp

            Filesize

            64KB

          • memory/4764-9-0x0000000074880000-0x0000000075030000-memory.dmp

            Filesize

            7.7MB

          • memory/4764-8-0x0000000005440000-0x0000000005450000-memory.dmp

            Filesize

            64KB

          • memory/4764-6-0x0000000074880000-0x0000000075030000-memory.dmp

            Filesize

            7.7MB