Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 04:46

General

  • Target

    2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe

  • Size

    42KB

  • MD5

    de73c206a177dd9046e442d80d52e9a4

  • SHA1

    c3e668869846689b1b044749b1c548f4eadb8c8a

  • SHA256

    e813453fc91ce9fce4ed3cb7302b1118e4dcb571e27c5a48d132048501930bdc

  • SHA512

    27c926c1bacd4486e72ff717fc333764a42b1fa2e0826d467d993ecfca2addacd2861ca6b885680b52c2e76f933acd84ec7fbb8c48998be2243fe5583e93bf90

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95m:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFk

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_de73c206a177dd9046e442d80d52e9a4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4556
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4608

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          42KB

          MD5

          05d1b06ac82138720beed769bb7b2e4e

          SHA1

          ccd7f26b4b74b0e83b9cda92a0a6af0aaee9cc92

          SHA256

          32acff85e503e4a171e4fd98461983393d79382b23b692476662f2e08e488915

          SHA512

          4171c75b87bce52986274959171f21e38e517bba287b8cff55cbf423505f2c35dc9718b868cd8544060576929d61fe7520211bd97b10c28a451ca597e74d3cc9

        • memory/4556-0-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4556-1-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/4556-8-0x0000000002050000-0x0000000002056000-memory.dmp

          Filesize

          24KB

        • memory/4608-23-0x0000000002060000-0x0000000002066000-memory.dmp

          Filesize

          24KB

        • memory/4608-17-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB