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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2022, 07:18

General

  • Target

    7fd840f4f1f0732daa5fa3e244c8d62c797be9582ea141e464ee6a57a764a25d.exe

  • Size

    264KB

  • MD5

    8a76938eac3960939b0d96caad0ca670

  • SHA1

    51d1aa88fde35179946498085c25f46edd9962c3

  • SHA256

    7fd840f4f1f0732daa5fa3e244c8d62c797be9582ea141e464ee6a57a764a25d

  • SHA512

    94912e8bfaca344c52c953539e289d0758c5727c56b90270ec6e88b95124613b57f5880e010861998bc9574eb4b5299d2e5425a28ba4b6a99ab6bd491fad5d57

  • SSDEEP

    3072:b1dlKwgj23+Oz05YoNozDv4Vh97i4Liu5Z611359z9pN7qJtt7KrbX4Zb8P8o1w5:b1dlZro5yDAV1iuLQ3tN7q1c8+PVB0Z

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 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). Likely ransomware behaviour.

  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7fd840f4f1f0732daa5fa3e244c8d62c797be9582ea141e464ee6a57a764a25d.exe
    "C:\Users\Admin\AppData\Local\Temp\7fd840f4f1f0732daa5fa3e244c8d62c797be9582ea141e464ee6a57a764a25d.exe"
    1⤵
    • Checks computer location settings
    • NTFS ADS
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Extracted\s1a4a.exe
      "C:\Extracted\s1a4a.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2256
      • C:\Extracted\s1a4a.exe
        C:\Extracted\s1a4a.exe
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3588
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2976

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Extracted\s1a4a.exe

      Filesize

      200KB

      MD5

      ae9e89e9eef61cb8225e451f03e6dbaf

      SHA1

      28e86646bc4ca8fb7eca376bf6fc1437e7703a39

      SHA256

      c262f836d430743c0c1a1dfba4f8f1da376b95a8d1cf1a632c8cdd8d31b6ee76

      SHA512

      fb55f6779f695862ec680986f61b3536b67693eba2af48b6124215916b7e0f2ddb1db8cdd085ed1c8f979282a147862d357d3b9c803ec03a5dc004463f87c5ba

    • C:\Extracted\s1a4a.exe

      Filesize

      200KB

      MD5

      ae9e89e9eef61cb8225e451f03e6dbaf

      SHA1

      28e86646bc4ca8fb7eca376bf6fc1437e7703a39

      SHA256

      c262f836d430743c0c1a1dfba4f8f1da376b95a8d1cf1a632c8cdd8d31b6ee76

      SHA512

      fb55f6779f695862ec680986f61b3536b67693eba2af48b6124215916b7e0f2ddb1db8cdd085ed1c8f979282a147862d357d3b9c803ec03a5dc004463f87c5ba

    • C:\Extracted\s1a4a.exe

      Filesize

      200KB

      MD5

      ae9e89e9eef61cb8225e451f03e6dbaf

      SHA1

      28e86646bc4ca8fb7eca376bf6fc1437e7703a39

      SHA256

      c262f836d430743c0c1a1dfba4f8f1da376b95a8d1cf1a632c8cdd8d31b6ee76

      SHA512

      fb55f6779f695862ec680986f61b3536b67693eba2af48b6124215916b7e0f2ddb1db8cdd085ed1c8f979282a147862d357d3b9c803ec03a5dc004463f87c5ba

    • memory/2976-142-0x000000007FFF0000-0x000000007FFF7000-memory.dmp

      Filesize

      28KB

    • memory/3588-138-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/3588-141-0x0000000000400000-0x00000000004083A0-memory.dmp

      Filesize

      32KB

    • memory/3588-143-0x0000000010000000-0x0000000010012000-memory.dmp

      Filesize

      72KB