Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 06:59

General

  • Target

    2024-05-30_bf92fb4fd2767ee41f951509e4bd01af_cryptolocker.exe

  • Size

    52KB

  • MD5

    bf92fb4fd2767ee41f951509e4bd01af

  • SHA1

    e2d159aef5adcb2524d7d6275fe357768ec36722

  • SHA256

    377a10c8289d6e9f933a37385b64d0b3e1c903218821492e354048b547ff58b8

  • SHA512

    14529a6d9cbf9373ab417182d1135d4e0e4d2a2644384fca82b43dbc8238ec7b0f7ffda597f62480b685ca44a0ec78c090122f002e19d2d33faf499b81868ed2

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyDD:6j+1NMOtEvwDpjr8hhXy+iyy3

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\2024-05-30_bf92fb4fd2767ee41f951509e4bd01af_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_bf92fb4fd2767ee41f951509e4bd01af_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4732
    • 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:3552

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          52KB

          MD5

          361008040871428bdb59f2c1eb2967c3

          SHA1

          6387fd75f050e8b7c008b679a78b037442843a36

          SHA256

          c5c01181218a13428168459a2411d017749d9217bde2d35615694d81692841d6

          SHA512

          338e82633fd900d80cae9b87df7a873072a9618c90de14657b34188cac86e569a4559fcfec5e6ecf61b9b799f815a532188a56a97dbbb17ee66d41c83693d250

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/3552-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/3552-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/3552-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/3552-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4732-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4732-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4732-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4732-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4732-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB