Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 04:49

General

  • Target

    2024-06-02_f8034bf0d6cd9d12f446f59d39398f9f_cryptolocker.exe

  • Size

    68KB

  • MD5

    f8034bf0d6cd9d12f446f59d39398f9f

  • SHA1

    ee37c8f2ae71cd7431f5ac3036c4bf9153c6c7dd

  • SHA256

    046041af54c6fdc086d59eec0f407fe7e78c4cdb9328ba1f25fd61ccf266f146

  • SHA512

    9dee3f0066460e74dee0361e5fa7d5a6b02890c9095607462153c0e80b5d36fdd8933d432653fb7adfb206fdba14ceb33f561c8b80675db2b78b72ba2fb0f559

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIO:6j+1NMOtEvwDpjr8ox8UDEpN/jP

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-06-02_f8034bf0d6cd9d12f446f59d39398f9f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_f8034bf0d6cd9d12f446f59d39398f9f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:912
    • 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:2560

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          68KB

          MD5

          556bba887b30ec8e49ee07e64f6b38ee

          SHA1

          8462746782b0f26aaef4ef51cb3d3166d6505284

          SHA256

          c0f7662f4ae1be716dbae7fa0654e576ae5c3daad31d046ef6600386e7006ad1

          SHA512

          cd3a053f7ff31125af3c8367401d82cb3046e6f950dd42af0a9bdcd88fda534bcbae1b0171f7aaedd65f092ef6072f031867f6cbc147605dba54b25372850ed1

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/912-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/912-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/912-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/912-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/912-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2560-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/2560-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/2560-48-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB