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Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27/05/2024, 18:02

General

  • Target

    2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe

  • Size

    59KB

  • MD5

    5120f104b3f69b5866a376e61bd37233

  • SHA1

    7d3f2c442edd0a455c9d726c96f98821be1a6f68

  • SHA256

    f2d913398fe248a5acab694fe282b1e572aa82e038557ee8fff0aa3b433f56aa

  • SHA512

    3462d3cd0710080fe1348ec4758b53490cade34392c100e0862710be782a537708b6d7a0943f00d9bfd1075974483d861fcc96953939c561be66a7efc4afaabc

  • SSDEEP

    768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPj9:H6QFElP6n+gou9cvMOtEvwDpjCpVXA

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\2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    59KB

    MD5

    621fe82ca97824072378c29a9367b826

    SHA1

    b33dbca3060274ce920b46941855fbb295cf139c

    SHA256

    486056dcdf2cf910f4894bdd9025e43397a069cc02a36373219cfa3724ed031a

    SHA512

    28b9929c3db724d86e4ae967cddf877797fb2c9e829b7b86dcfeb20e922430cbd41a098b34234bc751c6538bf228931f1d4e6c15b460a35bd9fed11c76443925

  • memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1688-1-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1688-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1688-9-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2884-18-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2884-25-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB