Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/02/2024, 03:29

General

  • Target

    2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe

  • Size

    61KB

  • MD5

    059eaef3399f06c2266b5c0f050e8b98

  • SHA1

    4b98a445073fdede0b6d39d9fe00959fd73a977d

  • SHA256

    1eb3701b01193c3ae359e00424d927f35a9e956cdb0b8cc9bc5081161f2cd517

  • SHA512

    f662a6d4118cc6c00ed66ce4ef14b3c28a6197895e3db1cdba8d3fb2e2b29cedf292c62d0c3868699986c686d5cf236869722b6d370417c838e889c16803e4ac

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299o:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7w

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_059eaef3399f06c2266b5c0f050e8b98_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4292
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    4f5d5afe53c38ba9368f96f0fc13e666

    SHA1

    1840bacd7ed173391d6ca32b59b848d00f44051a

    SHA256

    4809e58c148d4ca647b1afb8bcaa8fd9755552d788f7496f0e4b519601a828e2

    SHA512

    836be2c64b208d85ace25fff4f58ed825167b884fc6e16bc8d26d7aa064766c2e99a464f9541f60003a37f132b291380b7dda799b9e4206aae72c70867007b62

  • memory/4292-0-0x0000000002270000-0x0000000002276000-memory.dmp

    Filesize

    24KB

  • memory/4292-1-0x0000000002270000-0x0000000002276000-memory.dmp

    Filesize

    24KB

  • memory/4292-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4508-22-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB