Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-06-2024 03:39

General

  • Target

    2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe

  • Size

    71KB

  • MD5

    775fc36ebbfcabd372f901b6951327d2

  • SHA1

    3f0b48235cad2d474c1971aa6d379ba86d057611

  • SHA256

    40f25cb7cacedea1d0f33b0ed2fbf0142fcce0dcc9dce855f2c53d29ed9aba83

  • SHA512

    3d989162151a4c55bcc5f30d7f8063d1e08055026becb49afc6e324ebb1d6c8910f3a9aa7a237ba2fdedd9a4c7a8cc640a236dcdbaac334d54a3c7ed105082a5

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs99F:C4Q2c94OtEvwDpj4H8zq

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2356

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    71KB

    MD5

    abff060008dae2a26225df4ad5e15232

    SHA1

    95017afa1f685e068578a8053075b97efc9f40b8

    SHA256

    9463551adfd6ccfef7687d9654ccb4c8eaa8eaadf788c7ae4b65cd4046af46f5

    SHA512

    25a115851ea9423100f66a78aed645160456d5c297c39e3e8fb5eb5eb3e3e553344014b8e0b6ff41580efa3e9e6f58e8acc501b43c11df126b51f69a4101b527

  • memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2336-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2336-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2336-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2336-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2356-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2356-26-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2356-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/2356-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB