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Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 12:44

General

  • Target

    2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe

  • Size

    41KB

  • MD5

    cd45417b27d8cfdf53589f29d0f2e4f8

  • SHA1

    b4672b176619bfee4f6da6d617634c8b3584e186

  • SHA256

    fc260cb40166b3ff98f568a4fb217dc586b5039e39c5f80f634d5ee989e8ff34

  • SHA512

    69c0c82d370123e9cb404de0f856d53710143b39926143ce6a9b6a64d2877db1aafffd2473f532caf4eb7e5a74f19bc37a734f35bc9896a57b0d39f779210d27

  • SSDEEP

    768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8PEM4Z:bIDOw9a0Dwo3P1ojvUSDhcxZ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_cd45417b27d8cfdf53589f29d0f2e4f8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:3896

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    7e82e6ed4831b04764a8d663abbe9ba0

    SHA1

    ebded4de7340b2a315561d02b22521b400e9ded4

    SHA256

    d48e3cc10ad1dc93a707126a32ac8990a8d8b12637656c89aa6cc0cdcadc8a50

    SHA512

    ee42df0313f4db152443aaab5f83897a963343c5a7fa5ff40df9ebd6a0c314aac7d7a0b3928b8f1c821c2f1358c2fd9257d8aeff7fb97e01bcee4b8ee51ee8b0

  • memory/1128-0-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/1128-1-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/1128-2-0x0000000000530000-0x0000000000536000-memory.dmp

    Filesize

    24KB

  • memory/3896-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3896-23-0x00000000020C0000-0x00000000020C6000-memory.dmp

    Filesize

    24KB