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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
    04/04/2024, 22:26

General

  • Target

    2024-04-04_545c3e1b346ce636a00e86c7af209e0f_cryptolocker.exe

  • Size

    109KB

  • MD5

    545c3e1b346ce636a00e86c7af209e0f

  • SHA1

    c8a3135d4e64a568e17b14049bfcacedb53e85fb

  • SHA256

    5bfa6c8d1ee0f2137dbaef9d2c9df17a088aaf7abc3efa4ef077df418b0579c6

  • SHA512

    3585c7ba43db3591eb2492a0c6ceef561ba15018bea2c5b9c918d29c83bf2a919bb6c186e3f3af71aa9345c3acb1f3bb6a6c0712dd46fc96957e92223e8b749a

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GkszfD:1nK6a+qdOOtEvwDpjX

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\2024-04-04_545c3e1b346ce636a00e86c7af209e0f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-04_545c3e1b346ce636a00e86c7af209e0f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2732
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    109KB

    MD5

    18f7164c670735fba3eb7a1ec91297b3

    SHA1

    cb14062748f4662ef85d3f1e91eb0702f62d8047

    SHA256

    da8eeba016ae3d9d9b1807057476006d7c62371fa6ae3d378cfa8f3d426e894e

    SHA512

    56e94481b38aac81b408a2f9910299452b09313f01713449cb7bcccceca0381d5d4ebc337e4a2fef7c9b95aa950235968710eb5121f267972379dce8f2637ae5

  • memory/2628-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2628-19-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2628-20-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2628-27-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2732-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2732-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2732-2-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2732-4-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2732-13-0x0000000002800000-0x0000000002810000-memory.dmp

    Filesize

    64KB

  • memory/2732-15-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB