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Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/06/2024, 04:03

General

  • Target

    2024-06-08_e7ca1c48b7765b3b42487307fc9a69e2_cryptolocker.exe

  • Size

    47KB

  • MD5

    e7ca1c48b7765b3b42487307fc9a69e2

  • SHA1

    105c529c42e86db3b7e08a0443d5d8066a61dad1

  • SHA256

    38e51cb6f45035f3476780d726fe058e588cc32a74a1d9427ac7ad53794036c9

  • SHA512

    a21b6d39aa7b3e5fd925d552aa34f07683d6d8cad155482aba17370a77d00ffd2ee05d7e657455d63d8d7a5e37ce5cf21a540ba37c8c6d3ac92dd060ef7e56d1

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRhI:xj+VGMOtEvwDpjy+TRhI

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-08_e7ca1c48b7765b3b42487307fc9a69e2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-08_e7ca1c48b7765b3b42487307fc9a69e2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3024
    • 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:5032

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    a3e12d1843cacbde57830a8114fb46d0

    SHA1

    07ef195df0b8f21c9885fc3e828ac815d45da9ae

    SHA256

    0ebbdd4662371d54c03379e934195be8fdbae4078e67577f2dfb351e1a5d8816

    SHA512

    6058eaebb69960fc6749307710afa30a0792cf2fcd15776220a1b75d6793f5a1c972f696834c523c74fafdb99e78fbeaa2b7de77969d7efa00114aa425608ed5

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3024-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3024-9-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3024-2-0x0000000000820000-0x0000000000826000-memory.dmp

    Filesize

    24KB

  • memory/3024-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3024-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5032-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/5032-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/5032-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5032-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB