Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    19/02/2024, 20:26

General

  • Target

    2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe

  • Size

    56KB

  • MD5

    2497b2bd465fa40c1d8ced4538d9a739

  • SHA1

    0aaecbf561f0fd549b91a676fde042470d1743a4

  • SHA256

    c591e4d3fa630f8c5c022527d28fdb90bc9213c1238b487d277b7bf3e98fa93c

  • SHA512

    e8d758eec7691c2f0ecc0d984c766baee9e3942c7cb063b606dc1e7e5ff8f48153d4d1a8d79427cbe4d54198ddc14820b30ebdf5d28760c579d46a5db10b6651

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axc9Cie:z6QFElP6n+gKmddpMOtEvwDpj9aYap1

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 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\2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_2497b2bd465fa40c1d8ced4538d9a739_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    845b9b9550e8f573dea558f702691cff

    SHA1

    db8dbe299e329cb6fcd511292ac8d3d55ad50088

    SHA256

    1d8fbe9648f2a9a85ef7dd6fbd388a4d9224d1982859cdd4e0ed7d309edd5fd9

    SHA512

    02d20f36db904d05248f913ad75ed71a8ec210e4b59b281c583cf93baf880331bb3641443af915ffe326a0e5504d9e70d9b6be02c7ae119639ca28c5562f98d9

  • memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2700-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2700-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2700-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2848-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2848-0-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2848-2-0x00000000003B0000-0x00000000003B6000-memory.dmp

    Filesize

    24KB

  • memory/2848-3-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2848-15-0x0000000001EB0000-0x0000000001EC0000-memory.dmp

    Filesize

    64KB

  • memory/2848-14-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB