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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2024, 10:04

General

  • Target

    2024-04-15_a49070c3b9de1c3bbc010535e195647e_cryptolocker.exe

  • Size

    78KB

  • MD5

    a49070c3b9de1c3bbc010535e195647e

  • SHA1

    c0e03b55072b1100b5aff63059e492a0f18b2fac

  • SHA256

    99b47830c57faa42e3b0bd98db002b0d4765ca5a74652d4290990bf6a16d20aa

  • SHA512

    e2bb4e416f3a89e3d9322aedd3b8d668a3b7bac4b65670226114aeba2276ad35b4c6d6af8efad672e6dab64d8bd2dcf88251a1ddb7f1461c2d76b5d5eec7daba

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOA+YSafiPuqI:T6a+rdOOtEvwDpjNcT

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-15_a49070c3b9de1c3bbc010535e195647e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-15_a49070c3b9de1c3bbc010535e195647e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4032
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    0ed5022821ee282ceb88088af843e5f5

    SHA1

    9054edd017d4f17e50f53f22e9639e5c99f65690

    SHA256

    c0c6d6820899b1969f497697af9d5668fef7977e175109aaeb818c95f87a23f3

    SHA512

    ff53115454489cc0803c1ed209891749521a925a07fdc79c29359642dc1d2d47bd34de49075f763d6b401625dfd74ba10d7aa563c4c51e12447cc94a205907ef

  • memory/2412-25-0x0000000000550000-0x0000000000556000-memory.dmp

    Filesize

    24KB

  • memory/2412-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4032-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4032-1-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4032-2-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/4032-3-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4032-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB