Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 16:52

General

  • Target

    2024-04-05_e0760df6ae56375943d382af0fff4e30_cryptolocker.exe

  • Size

    89KB

  • MD5

    e0760df6ae56375943d382af0fff4e30

  • SHA1

    0f4710ca2cc8943ccd418ffd72119bf950d06d19

  • SHA256

    ac556b64d3b2e9ab43b651dd097f130e63b2755ae1128a24aecfafdb25f18cb7

  • SHA512

    9ad939cddfc62eeb64a8b3bb73ca22089821d7a8a862af3f436a36bb4b1aa8c0e9bb1a006fb28637c33e8ee4b78e950edd69fa04530e21c14fec9ffe66d873f6

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQoT:vCjsIOtEvwDpj5H8zPsw

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\2024-04-05_e0760df6ae56375943d382af0fff4e30_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_e0760df6ae56375943d382af0fff4e30_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2152
    • 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:400

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    89KB

    MD5

    97df569b7898f9295a9739e0ba2b861c

    SHA1

    4ba6bbf95d5af028af8f855f5b0e4029c217cbf6

    SHA256

    45718d1673744730fd4eb01954fb1afce537eeb3756b31fe7c01f901c2c7f353

    SHA512

    648c60f49994efd0d95360b502df0027122035927431cb5d0b3e5f8319a61f7c6144315b4fce87f7b7b231af108a6df2f7f314475e1d4dbe6988424d123290f0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/400-17-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/400-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2152-0-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/2152-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/2152-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB