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Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11/03/2024, 18:48

General

  • Target

    2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe

  • Size

    102KB

  • MD5

    639d2b810fcf9d3e4b0e394803680ea0

  • SHA1

    ebc6c7accde6e316e03a6cfc4acd3609c15d01b3

  • SHA256

    1c617070b59d3d78c544981a0130303e6acedf5b44e40dce6332a2a33cd0ce8f

  • SHA512

    722e3a6f291640e2cc1bab2f63cecb41435489688f2af46ffad9911d97b82e0d7583209097e2884d3c1b9cf470c9e5f89935a6ae7caf2a22685acd40528f2b5c

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviy69:AnBdOOtEvwDpj6zR

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\2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1028

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    102KB

    MD5

    803f3f645d937f45443a2e1f64380023

    SHA1

    d30c73fab67563447b754cef8d39ce6aa0415a4a

    SHA256

    208906a441e8d35d165e4f861c522faa20534f5136d130381ae99c29fa38ecfa

    SHA512

    d8fd5c275afc9ffafa40e93f567d4be3a109e358bc04a3b5c785f64d1da9e4116c34c422d46fa673259688a37039983daf698e642cbef940b578f474f4b14f8a

  • memory/1028-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1028-18-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/1028-22-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1028-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2512-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2512-1-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2512-2-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2512-8-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2512-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB