Analysis

  • max time kernel
    140s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2024 07:21

General

  • Target

    2024-02-14_f93b187266ed2ad088adeebb5c8123dd_cryptolocker.exe

  • Size

    40KB

  • MD5

    f93b187266ed2ad088adeebb5c8123dd

  • SHA1

    24c0d34f4e138a44ce5c99098926567f4ecb7498

  • SHA256

    16e07762bd91a97cbe7785f33eecf2031a5026e2f3c853182c758a6cb56adecf

  • SHA512

    8a00ed59f1714202df89283cb2b1180f9985eedeef3b1f3b35f524f4cf617a6c3f82154a8c4fe584e667f752fc01a9477aab49b4af92992430ac38d789491b8a

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRY+T:m5nkFNMOtEvwDpjG8hhXy+T

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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_f93b187266ed2ad088adeebb5c8123dd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_f93b187266ed2ad088adeebb5c8123dd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3052
    • 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:772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    415393be51ddaaebaded31c2f9a4b52e

    SHA1

    9ac9e7b5f4a42a2f99f8efcd70ebf920d5d4335f

    SHA256

    14a348d3acbe62cb7b6d842a5e7044305f99054d9708180d0de15c799ead5b56

    SHA512

    69f4dde72d9e184ffa3703d11c49117d121cc6a269d6122196c68f9839d8d3aff0e199be13b087b7c3acbf701c6c39a3d11e1f0d2d0c0d42caaef0195699cb28

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/772-19-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/772-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/772-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3052-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3052-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/3052-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/3052-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/3052-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB