Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/06/2024, 22:29

General

  • Target

    2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe

  • Size

    72KB

  • MD5

    f6aa69c58af44f63af3caf5aa9de898b

  • SHA1

    afd5f487b9ba2a4b3275b061109c35de089d1e2f

  • SHA256

    a16bb554ebec21a4791dd085377e00c0dc2ca95c2ec6be8680cd2137cf43227e

  • SHA512

    31ebf7650b22c4917b5a3bb7ee3f1e980a5a59d54169dc70131ca4386faa37a79257faf1133ae195bb412430eec7892bd8af01063769d7ba3f1722d9207d5c0a

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs97xr+:C4Q2c94OtEvwDpj4H8z1

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    73KB

    MD5

    2c67e5fad2ca867049d38daa1b9c61ff

    SHA1

    e0608aec4d45c928f76f9cbd166a8e374195bb5e

    SHA256

    ec80540999ade45a9480d9b4d0fbd9b117effa757b7c426a50531c7922cf9d79

    SHA512

    4885878c3c1276c742a5bfecf30be6eb7b1580fce8235311f8f12a98c5cd19b9084f3f16a6ce64988ff675a29ffafa1ad80b7f12668c56db05bf9ad26ed44d52

  • memory/1712-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1712-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1712-2-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1712-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1712-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2504-18-0x00000000002A0000-0x00000000002A6000-memory.dmp

    Filesize

    24KB

  • memory/2504-25-0x00000000001E0000-0x00000000001E6000-memory.dmp

    Filesize

    24KB

  • memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB