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Analysis

  • max time kernel
    151s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    18/01/2024, 22:55

General

  • Target

    2024-01-18_704af4484e70e67d63855603e0b8639c_cryptolocker.exe

  • Size

    45KB

  • MD5

    704af4484e70e67d63855603e0b8639c

  • SHA1

    9f7a0df3b01a22a5bfe7ebad5b314bb1294dac32

  • SHA256

    e059bc121eaaf3bed9728352419e1f50b6c79b902901dd442bfb4fe1399a3582

  • SHA512

    295f3accf94101759270fdc9ae6c170119ff1b97d5ad22040e67eaf6718ca73479768aabab6d4616249c2563f119f4ce935a7b9b620e471327913dce40a2f651

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WTBL:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6t

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • UPX dump on OEP (original entry point) 5 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).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-18_704af4484e70e67d63855603e0b8639c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_704af4484e70e67d63855603e0b8639c_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2792

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    7ccd13c6c80f9b82192ba93d6d56236a

    SHA1

    6c36cfafa9268eafe2cce840cd1575d64e1257dc

    SHA256

    1bfca39bc85dfae8d796d93f2be7d9f10e7ca32669085d964f3fe1c3d1a2fa34

    SHA512

    8d5ba1856a635b5c50769a374554a4be417b265966d34ea7a4da6a653c78e436495658e1ff69171875c85609d2da56b95fac483e879c57b72e7884e2de198b7b

  • memory/536-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/536-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/536-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/536-4-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/536-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/536-13-0x00000000026C0000-0x00000000026D0000-memory.dmp

    Filesize

    64KB

  • memory/2792-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2792-19-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/2792-21-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2792-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB