Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03-05-2024 23:25

General

  • Target

    2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe

  • Size

    68KB

  • MD5

    47e39dcd8f8faf984e1a796b42828c32

  • SHA1

    6ef05c6f057e82221196ffe28b11c718bb75c4f0

  • SHA256

    b418eb6491d9e91578603bd5999e9b353534548cfe54834e45428b703e6e9cba

  • SHA512

    1596f06c4a4247d066e785119cc882efd893ba2cfabb5f5c4bb07c0f25df6a4d9b623e2a1de2c6bf9245782129d73bb010bf431ed765c431c322d4017e7ccd01

  • SSDEEP

    768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PL:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAL

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\2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    ee0461f170ab10e9ba5d399b90306ad9

    SHA1

    cb18111742505330eeb3a63b4aba6f0815e393f1

    SHA256

    2acbf8a77a671506820260170b9cd97a9733c59e8f4e0f5c5819a34d9b5ddaf2

    SHA512

    2de15b1c859c4d8b8be6e57ba034f64b395c994e8f47306960d6727850a0e147884f1695ac07f07af066303de24dae419791f36b130ada6a40ef7681f5a9aa5c

  • memory/1740-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/1740-8-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1740-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/1740-1-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1740-13-0x0000000002270000-0x000000000227F000-memory.dmp

    Filesize

    60KB

  • memory/2508-25-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2508-18-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/2508-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB