Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/10/2024, 05:37

General

  • Target

    d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe

  • Size

    917KB

  • MD5

    3395921f981e54180e5801d6389cc3ef

  • SHA1

    21faeaef86cc8bd47904cbddedd383959292dde8

  • SHA256

    d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f

  • SHA512

    d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266

  • SSDEEP

    12288:ALkcoxg7v3qnC11ErwIhh0F4qwUgUny5Qt/uwbm4Wp4a5LaSI/H:WfmMv6Ckr7Mny5Qt/uw5WW9zv

Score
7/10

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe
    "C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3892
    • C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe
      "C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:924
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"
        3⤵
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1660

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe

          Filesize

          917KB

          MD5

          3395921f981e54180e5801d6389cc3ef

          SHA1

          21faeaef86cc8bd47904cbddedd383959292dde8

          SHA256

          d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f

          SHA512

          d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266

        • memory/924-10-0x0000000003F40000-0x0000000004340000-memory.dmp

          Filesize

          4.0MB

        • memory/1660-14-0x00000000056F0000-0x0000000005C94000-memory.dmp

          Filesize

          5.6MB

        • memory/1660-12-0x0000000000400000-0x000000000041E000-memory.dmp

          Filesize

          120KB

        • memory/1660-13-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

          Filesize

          4KB

        • memory/1660-15-0x0000000005140000-0x00000000051DC000-memory.dmp

          Filesize

          624KB

        • memory/1660-16-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          Filesize

          7.7MB

        • memory/1660-17-0x00000000061F0000-0x0000000006240000-memory.dmp

          Filesize

          320KB

        • memory/1660-18-0x0000000006610000-0x00000000067D2000-memory.dmp

          Filesize

          1.8MB

        • memory/1660-19-0x0000000006520000-0x00000000065B2000-memory.dmp

          Filesize

          584KB

        • memory/1660-20-0x0000000006510000-0x000000000651A000-memory.dmp

          Filesize

          40KB

        • memory/1660-21-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

          Filesize

          4KB

        • memory/1660-22-0x0000000074FF0000-0x00000000757A0000-memory.dmp

          Filesize

          7.7MB

        • memory/3892-2-0x0000000004050000-0x0000000004250000-memory.dmp

          Filesize

          2.0MB