Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    18-03-2024 15:48

General

  • Target

    2024-03-18_adf15798521ae4158eeed2b52df07274_cryptolocker.exe

  • Size

    50KB

  • MD5

    adf15798521ae4158eeed2b52df07274

  • SHA1

    4287818c65860b5defd0c5c64f8adf5e29358f6a

  • SHA256

    739cb7facc5234090dc7fc579d3816f2e8af4379d1b5b9a9834351dc103ab326

  • SHA512

    951458ae822397737623eea823e8f8c4ee6ef7356d7e0c3c2406f11575c5d74fbd1fb9fecce1505877b9fc29d9d83310c7ab9aac639350e0ce913f6c6e31893e

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WTB52z6:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6u+

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 6 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\2024-03-18_adf15798521ae4158eeed2b52df07274_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-18_adf15798521ae4158eeed2b52df07274_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1108
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    0b0b45e16e558410ee547b9e2164b349

    SHA1

    2b2db1662fcf8251d4d5b04e292102fdf7f1cd7d

    SHA256

    f23b61f574a30ff0353ccb8f696be2eeee83c76234c6cca030b8c1edcc73233e

    SHA512

    2a0e8b6c997c7480d258d47241b3c073c62f314842016f641bd5857460e4ede97e08fff5e7c1664315b6b4062773034fcd27281235ef6146780e36e5e42a218c

  • memory/1108-0-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1108-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1108-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1108-3-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1108-13-0x0000000002010000-0x0000000002020000-memory.dmp

    Filesize

    64KB

  • memory/1108-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2036-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2036-20-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/2036-19-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2036-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB