Analysis

  • max time kernel
    132s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 04:11

General

  • Target

    2024-05-25_d870c97ba68143ef4bafe70f34ec011a_cryptolocker.exe

  • Size

    50KB

  • MD5

    d870c97ba68143ef4bafe70f34ec011a

  • SHA1

    c745e38c58a563e0c001ef852bac79688212b0a8

  • SHA256

    ebf6137786496a4d772adae6160615ea6ff9e3691d28483d3c555b14302ed231

  • SHA512

    2daf458dc5b6118859fdc753c33907b8e94c2cdcc5431181b0514251333eb2a43cd004382fa080aa1b46f0736664d8fdbd8d38d44858277ac1199de7f066a86d

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ15x8rU:ZVxkGOtEvwDpjcE

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 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\2024-05-25_d870c97ba68143ef4bafe70f34ec011a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_d870c97ba68143ef4bafe70f34ec011a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4492
    • 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:1204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    56051301300d9620a1bc80d502680f33

    SHA1

    7264793b0f9d8f3ff7d3aba79aa888eb6713f2a2

    SHA256

    e69a0b05028372d6c541422b742318bcd5f4c1bf2a2f8b071b5b268893372bb8

    SHA512

    d6bdd2def336cc7c81acdccbc77f188f031b6139939127ec59983381c0b0eff4d16439c94d9e93db5790246be002bf8111d092e5a0cf589f15dc4289fb3f2dbe

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1204-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4492-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4492-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4492-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4492-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4492-17-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB