Analysis

  • max time kernel
    93s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-05-2024 20:23

General

  • Target

    2024-05-12_13d6f33a77123f18dc5fdfc0cb6292d3_cryptolocker.exe

  • Size

    37KB

  • MD5

    13d6f33a77123f18dc5fdfc0cb6292d3

  • SHA1

    dcda485318fec0df3f9bcabc432f798ac31b52f8

  • SHA256

    9f595cce692a47d4c739cbf4831e4df0e9f0fe11615edfe8c912933c28fd5bbf

  • SHA512

    81c6eb2f6e0cf08ed85aed1738e103c04340ea8d4fb5738a989247fbfd1267c08952c6e69d9f187567ad7757a7836b2e76a4a6639a8457449da89813bbe96dd4

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4h6vg:fT+hsMQMOtEvwDpjoIHh6vg

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-12_13d6f33a77123f18dc5fdfc0cb6292d3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_13d6f33a77123f18dc5fdfc0cb6292d3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3648
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    37KB

    MD5

    bbb802a759719e174eb8476bbb2f2c63

    SHA1

    bfcc52e0a21ef781e16ac3fc9d712e13e24ba72b

    SHA256

    6b55666b464178db0aa181930b7662c97cd391a99eefceaf917dc42e7b007937

    SHA512

    ededb836b5e8b274f82abce363bbdaaa2cfbc50712b4afd21f4cdf0975fd614b4f8b655a2eee976f45ffabd506a4383b49cc9079952fe22d33c3a26494f31a95

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3648-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3648-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3648-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3904-17-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/3904-23-0x0000000001F50000-0x0000000001F56000-memory.dmp

    Filesize

    24KB