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Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    14/02/2024, 00:41

General

  • Target

    2024-02-14_7d48d09c2f5c629f6eaffb5c795c8639_cryptolocker.exe

  • Size

    61KB

  • MD5

    7d48d09c2f5c629f6eaffb5c795c8639

  • SHA1

    dc3995493596515ea0fd2e2adf3018454c1b3db5

  • SHA256

    4b6dc5410005625f8cdb4254d809ddee6bc78b605fec41175bbf103f54d98a5d

  • SHA512

    1e2358e8a3449f6094630d303696becc874f9b6f98e964b7e0a83ac268901735fa1a7b5db10f4c35a05178d252ebc7e428ed6b4bacbed5513cd39aa2981ae519

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSAap:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7e

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_7d48d09c2f5c629f6eaffb5c795c8639_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_7d48d09c2f5c629f6eaffb5c795c8639_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    dbafca0382a51d5da2eaa0d652241359

    SHA1

    b268a7adc1da0d41d0eafc784bf094ae2ade8523

    SHA256

    7cc843ef8a52fcf307ec895b0866633e511b284c8786c741712f591eb8270878

    SHA512

    e3da8c31f41311e72b4f5dca59eb9692016040bfb7991c0bd499b03177159f725bbe754f0a2806456bd3287dab366113539b64975a705717b3b8fadeed9555db

  • memory/2240-0-0x00000000003B0000-0x00000000003B6000-memory.dmp

    Filesize

    24KB

  • memory/2240-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2240-3-0x00000000003B0000-0x00000000003B6000-memory.dmp

    Filesize

    24KB

  • memory/2708-23-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB