Analysis

  • max time kernel
    89s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 20:40

General

  • Target

    2024-02-13_cfb604120e75d3d4688ab822c3c397c7_cryptolocker.exe

  • Size

    64KB

  • MD5

    cfb604120e75d3d4688ab822c3c397c7

  • SHA1

    70a704136d3f5e56f407583cd3d1337eab138e3e

  • SHA256

    48c269ab3fe023d4c1ea5245d906ead517170fdd591b8cc698dab72c365f71d8

  • SHA512

    800786bfc0b724f4fa6b3e82507691d20f0bbcbd2fbcf0dcd1302fcdedd70ddedf4b6e4924af175fcb8650eb4a1f3adf50c02c66eb94b3289ddb59774f45b5d9

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3hvLcbV4N:ZVxkGOtEvwDpjcawo

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\2024-02-13_cfb604120e75d3d4688ab822c3c397c7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_cfb604120e75d3d4688ab822c3c397c7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2324
    • 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:1652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    2486122409184095cd59e92f2ed8ddec

    SHA1

    a2bb00a498c90fbd37ec5c1cea9bb4ded344b718

    SHA256

    caa1932526c86504ba2aecea42153faafa7860a817440971f95635d20b18510a

    SHA512

    ec295ba3ac62774702daab582d3732b7c2ecfaa8fae6c7befe151151cc0d58b410c4691275896c5e62bdb140a4a298806550d2dd9eb51738b11f42b6a6da402d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1652-17-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1652-18-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2324-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2324-2-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/2324-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB