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Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    28/05/2024, 19:54

General

  • Target

    2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe

  • Size

    60KB

  • MD5

    3e28391175b0287421323e73c378820d

  • SHA1

    4d267da3bed5d1064beea1a464440e7d450f2371

  • SHA256

    f79a8177347dc8b664ee6f5f84268a95dfa4148101f1dfbb447caeb5a6183245

  • SHA512

    c1b7c14c25f6f9aeafffbb44d00150b8606a1a9cf293837f230d2bb91f74cfbb2863d3ac8925666e98dd40f7d88b09450bb92ec4fd87cdf225dbe95339ee9f29

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axK38ns:z6QFElP6n+gKmddpMOtEvwDpj9aYaQ8s

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_3e28391175b0287421323e73c378820d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1808

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    c3a72397fb9324a39a6a3108704446fd

    SHA1

    0214cda766be314fb57d372556a0fe03578b5a4f

    SHA256

    61b8e4b413d7168e871de983b90b410602eb4f2570355d44b3f1a4314e1841c4

    SHA512

    611627f2a1b141d685a93819195fac39ec5a8e7bf73e45eba7d6b5c97046fe98b64269d9eb59ff6a954122430a43dfeca3dc93c5c918b2bd9fadb7f6996a7989

  • memory/1808-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1808-17-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/1808-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2236-2-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2236-1-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2236-3-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB