Analysis

  • max time kernel
    90s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 00:41

General

  • Target

    2024-02-14_1163b7de051e23a2a6834a4aa319e5a3_cryptolocker.exe

  • Size

    101KB

  • MD5

    1163b7de051e23a2a6834a4aa319e5a3

  • SHA1

    1d4d9e8427fd77291793b43f1cff7e4f8e0aba60

  • SHA256

    2af7cddb83269d1c0595dd0cf64ec1fabec73e9c5297588226766b550568ebbb

  • SHA512

    fb1a18debaafa21227534a8cafccd04665f4adaac338631612cb8208ce2cd6ed315896315fb97ea00d984d8a4f048c74be5ff1a7c500ab7670177065e6c59d21

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMA:xj+VGMOtEvwDpjubwQEIiVmkxv/P

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_1163b7de051e23a2a6834a4aa319e5a3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_1163b7de051e23a2a6834a4aa319e5a3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2448

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          101KB

          MD5

          6a73368455d9942ddbe901e575464dfa

          SHA1

          b8bdfa7d83470888365a26db568948fac75045fe

          SHA256

          0f37be64d01d78e06229eb09c5b4103e92d36237a2234386b63d7088ba8cfce2

          SHA512

          92d9a6a24085d8e192f61117f9707d62b3a4e731f572ba2b620b2b8c93f304a398705764f858e6b64601569da82d51bfef593d706286d007c67b2c51b7ac53a4

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2448-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2448-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/2448-22-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/2448-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/5104-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/5104-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/5104-2-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/5104-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/5104-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB