Analysis

  • max time kernel
    92s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/09/2024, 03:41

General

  • Target

    2024-09-11_3e3e209b81818e8f08089085bc464ae5_cryptolocker.exe

  • Size

    57KB

  • MD5

    3e3e209b81818e8f08089085bc464ae5

  • SHA1

    f8a049477018799f49d7c6e21cf28debaef9da3c

  • SHA256

    23f4442c5142db06f7d0fbc03fdbfd1c8c647afd3b9e99049895ae224136b23e

  • SHA512

    00a8d12f6b6ae716b62229979e93158da57bcb76ba19068e0892b243b148d2b63ed171fdbd6196caa868d481ed4a2236e11dddec8cdecf1d301020c05c3698ac

  • SSDEEP

    768:HQz7yVEhs9+iy6DX4WTnbcuyD7U4tOOtEvwDpj/L9+4hdCY8EQMjpi/zct:Hj+i2WTnouy84MOtEvwDpjZHyjq

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-11_3e3e209b81818e8f08089085bc464ae5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-11_3e3e209b81818e8f08089085bc464ae5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:3648

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\misid.exe

          Filesize

          57KB

          MD5

          ab2bf4f98df5ecf2584d91ed7a7c7f81

          SHA1

          0c469948763fa114791ff85b4a02fbbfd84e7930

          SHA256

          c41d24813a925fa4b3802662fcf1ea898b3f5f7a72b177533e2c2e27a4ad8ed6

          SHA512

          af6736b92097f61c5d2dfa3172011df1a757e04376da81d0d01158a1122806afc93287eee84567d7dc8254f41c6c17f73d3d9fc21e3abe6211083666890a3180

        • C:\Users\Admin\AppData\Local\Temp\misids.exe

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3648-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/3648-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/3648-48-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4400-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4400-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

          Filesize

          24KB

        • memory/4400-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

          Filesize

          24KB

        • memory/4400-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/4400-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB