Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 22:22

General

  • Target

    2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe

  • Size

    36KB

  • MD5

    04b77b911d33d952b8e33c2c7a999e26

  • SHA1

    55175735a2a199a84c5a972ff65e53deafa1ee2e

  • SHA256

    16cfa0daf6de553ff3751dac0a97bfc272169a8ca23a031cf23597a3d045ffbd

  • SHA512

    2c14696479ba0e1b7de0d8e9b7001f0e1c546dc036eab6d49578aa96acd164c3793e78e7a48f7bbce7a48465026a539939f734078ad22857eb3eadff4ccc9c09

  • SSDEEP

    768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3OV:bxNrC7kYo1Fxf3s06gYV

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\2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-02_04b77b911d33d952b8e33c2c7a999e26_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4032
    • C:\Users\Admin\AppData\Local\Temp\pissa.exe
      "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
      2⤵
      • Executes dropped EXE
      PID:4980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    bdaf42c5164ae28d79fc7c206bd8c72d

    SHA1

    9fa8218c4912ffe4a2956f9cb9d67bab8e729f2e

    SHA256

    7d3be1114560e52128330c9486436aed2f887183bc90390870d121cd9b529984

    SHA512

    c51bf1ea8d2a1b8ef63b64f62921272e5126c220a8f693c3fa18dffabdf2adaf312fe42c81e41db3347d9daceb3d422554e80d771ffae2d85c0c1c37d2b9a790

  • memory/4032-0-0x0000000002350000-0x0000000002356000-memory.dmp

    Filesize

    24KB

  • memory/4032-2-0x0000000003150000-0x0000000003156000-memory.dmp

    Filesize

    24KB

  • memory/4032-1-0x0000000002350000-0x0000000002356000-memory.dmp

    Filesize

    24KB

  • memory/4980-17-0x0000000003010000-0x0000000003016000-memory.dmp

    Filesize

    24KB

  • memory/4980-23-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB