Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    19-04-2024 09:27

General

  • Target

    2024-04-19_36beed9a41982233b61be0d5b076285f_cryptolocker.exe

  • Size

    70KB

  • MD5

    36beed9a41982233b61be0d5b076285f

  • SHA1

    5297e6263b0d6a221d9d465a7f0c5a4d0828013e

  • SHA256

    afd9c11cbb96c86bc9a7a30a1eca4d4e07717de5d46ded670506bbe96692a9a2

  • SHA512

    e8d1cb9aceccb4581ae166717f99aa178ed65608682e309310897e1d300686d2d24cf2b3bd96c0919b470e4f20d4e4420fb4a6c5d6dc7a64bb4ed09f0d110256

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9z:C4Q2c94OtEvwDpj4H8zO

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\2024-04-19_36beed9a41982233b61be0d5b076285f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-19_36beed9a41982233b61be0d5b076285f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2960
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    70KB

    MD5

    31eb5e7f64eb551cae5ffef422b625d4

    SHA1

    aebb45c4073511c2774cb89875ce0d73ef67876d

    SHA256

    6621efe23b8197ddbaa932f99e4744ef30e497965b6a6e0a15e398a099f713e1

    SHA512

    a5007cc7d602b119bef24dae8bbc2af16b036b268c8a5bcb4665d604341aacbfbd0117a94e5bb1fcaf56ace03c902cc046e07ebd8140393245dbd1c368954319

  • memory/1268-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1268-18-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/1268-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/1268-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2960-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2960-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/2960-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2960-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/2960-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB