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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    15/03/2024, 13:42

General

  • Target

    2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe

  • Size

    82KB

  • MD5

    672cbd9ad71ad85c9dcce93e3de93766

  • SHA1

    c1651030b2776893a84faeec62c56e20a0a58f53

  • SHA256

    ced6ec3fd9c9428cfbcf6aeacfe4727438900ff9118b3b560bfe2f8668903ec1

  • SHA512

    2045c64adee57086f36be1a129b41fc66bdedea2baefcbfc493f1c403df9ca9c904aeb20032194642c6675e68b77fffdf7472b10ab71c62859f86aab2254ed13

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7G3:T6a+rdOOtEvwDpjNK

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\2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2528

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    82KB

    MD5

    c8e4e21839afbefd93543f2cd532cf57

    SHA1

    e8504c4d2ec4e593555fd290ec3ecc5cdc02d4aa

    SHA256

    8bfe3493061f1970e8203e3a0a099da850efff8c615099fe21ad693a38015deb

    SHA512

    f2e7b056017fdaf1c818ec19d6f6f54f31a78592aa2b44c6c338209cc15b0d2dee2f5edf9a411e81b6561baa0c62467289b60cc5f1b271e1c3b8628c12e0ab6f

  • memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2528-20-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2528-19-0x0000000000470000-0x0000000000476000-memory.dmp

    Filesize

    24KB

  • memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3056-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/3056-2-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/3056-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3056-15-0x0000000001D30000-0x0000000001D40000-memory.dmp

    Filesize

    64KB