Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 14:28

General

  • Target

    2024-03-05_63a4e5614c41b2e755e8e53175f53c92_cryptolocker.exe

  • Size

    39KB

  • MD5

    63a4e5614c41b2e755e8e53175f53c92

  • SHA1

    d88d7eecabc197731ecf6115c5db0f994d5c02ea

  • SHA256

    015c585eb6a3388e84638b111521b912c432e1a5ec6570af50c4ebbbb3c05153

  • SHA512

    9a469e6b4c4eae150ec13bddbe7e608661beffbe0b5b0d0687a49d56bf33b823e3c2797a928efed0721de8ae2a60380bb2cbbb5216747375f16289847127e311

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnS:m5nkFNMOtEvwDpjG8hgpS

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-03-05_63a4e5614c41b2e755e8e53175f53c92_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_63a4e5614c41b2e755e8e53175f53c92_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3488
    • 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:4240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    89a8b906f50a3b06491f62df15f08928

    SHA1

    bc304b1b2e2428316dd8e4326a45aa00bc27337f

    SHA256

    e0746d938a8731455b930b401a34f1b6bb3ea161fe7dfae9add52b289ff45fb5

    SHA512

    c965765edae61d34d493901c5aba8446bf70ab8500d92b32134aec6d0096923280493cfbf264d621efc36667bad0fd40df064429193e73dca5f1a9d4a1a3fb8d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3488-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3488-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3488-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3488-3-0x0000000000890000-0x0000000000896000-memory.dmp

    Filesize

    24KB

  • memory/3488-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4240-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4240-20-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/4240-22-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/4240-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB