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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    15/06/2024, 11:27

General

  • Target

    2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe

  • Size

    76KB

  • MD5

    4917b04e5b35abb6a0c881fea3af9561

  • SHA1

    66b1ee7dd0d4a17a8ba02ca835aad54b01f3f05d

  • SHA256

    61b9e13228ee69d109af0ae977549469061176b1710a70dcc7bd1a912522e785

  • SHA512

    429f7ec6f7437299eff27a8744b906c5239e21e0f8fd216fffb51f2a573e1a2cd8cf1ae1e993bd072f765590a15d8312cb0dd31c66742bdb1205a26eaa8f47f4

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81Gj:1nK6a+qdOOtEvwDpjC

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2332

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    76KB

    MD5

    d67f70a64a7715053642a26612820e03

    SHA1

    70d461dd07d606ecbddd1b0cd7e2da441669e8fb

    SHA256

    354fcba1d68a87be5e55daaa7fb769b7de5d52b82bf5a045328fbcdf90042095

    SHA512

    80b262fd70cb7821c6c2dc9a1d1fc807bb4b8e6167ccdba53400d399db6bee33a60d5228e9ad499622d6677c7aed6d1c8ab5e93452d480bab3162bbe80835ba9

  • memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1704-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1704-3-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/1704-2-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1704-14-0x0000000002480000-0x0000000002490000-memory.dmp

    Filesize

    64KB

  • memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2332-19-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB