Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 22:31

General

  • Target

    2024-04-30_7e570e863c801a62934fdb390665b0ac_cryptolocker.exe

  • Size

    47KB

  • MD5

    7e570e863c801a62934fdb390665b0ac

  • SHA1

    7447a6925748b321dcbbcd576fc9c40f2c2ac2fd

  • SHA256

    15ebdc4334950ada60c4daec478b082d974a209ff9a19512d8e0c59654bdd46c

  • SHA512

    f805116916a21527030b0cb6a3f7019849d54c8b9de9474dfea5c20c6fee93ec3cf5c1392c21b43a5b4990e9017fbc48bd01b9594a67933e2208e1a02edc79f7

  • SSDEEP

    768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcb:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfb

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-04-30_7e570e863c801a62934fdb390665b0ac_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_7e570e863c801a62934fdb390665b0ac_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2300
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    07d77b2a1379daaeb68b64fa73636de5

    SHA1

    ac5ccb30507fd7b128aee2de67431c875865c55f

    SHA256

    4fe0b003f04dd66e9288a1b45c37401e7db35c2f0ec7e1727a1560ac274234bc

    SHA512

    32576a9a4c9494ee34a96c33a277bca13c84a03ef7812582822a0a1f3982dc7d0ab82690e8dab83350d91b3527901bee9f9fede5172e5d3a091f38e5e97f9476

  • memory/2300-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2300-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2300-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2300-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2300-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4436-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/4436-20-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/4436-26-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4436-27-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB