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Analysis

  • max time kernel
    142s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2024, 15:44

General

  • Target

    2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe

  • Size

    47KB

  • MD5

    a2a99b5d7bb819460524ebc45344ae4e

  • SHA1

    1cdc53a7a133b4b30c91f83f1b4073653d12ec19

  • SHA256

    27e8c821e6360597fb400dc2513d1f7a98eb26a3fe58ee4f2bcf0cbc2a636da9

  • SHA512

    d73c00ccd0744680e1e5a202d429ad81735796fae464fd96d477e38b1c5375928d07797952aef9730f01896cf1da237a3d659e01e6fbdb727f78453cfa011734

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo22u:qmbhXDmjr5MOtEvwDpj5cDtKkQZQJ1Y

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\2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2624

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    5275ad029ebb9ec3dcbee0ee6da2af56

    SHA1

    376b99fef4d6c817b870cd43ea9df135a4960604

    SHA256

    e62de68ff8d93930557ebeb9c1bc780db41486b36f1e4eebfc9747881cc7e150

    SHA512

    49cfdbe59838bac65d21a2dbe5f293e2e1fcd0926e0065c18c062056f598ac890609ad44a5d84e27a8176bbdc1edfc0b8c28b07917b5415d5af1ee57f48b9f99

  • memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2624-19-0x0000000000450000-0x0000000000456000-memory.dmp

    Filesize

    24KB

  • memory/2624-21-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3044-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/3044-3-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/3044-2-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3044-13-0x0000000001EE0000-0x0000000001EF0000-memory.dmp

    Filesize

    64KB