Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-05-2024 18:23

General

  • Target

    2024-05-10_28080e375952b00b861eb5812885d5a9_cryptolocker.exe

  • Size

    48KB

  • MD5

    28080e375952b00b861eb5812885d5a9

  • SHA1

    156df44b976d61c6626a28d4ab610f7bf75072aa

  • SHA256

    5245e31ff846026b8ec2a65d94ff2320285acaa2a43fc9986e451718b4d5e6fd

  • SHA512

    9fb97a8fb2719373aea262c436db917f03a80190551bf3ba43f6f7a30e6f40c8e53fb79380260946d0936d1ecad25533a5d61441d75b535e3a34ac222cf0ec1f

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0ncb:vj+jsMQMOtEvwDpj5HczerLO04B/b

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\2024-05-10_28080e375952b00b861eb5812885d5a9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_28080e375952b00b861eb5812885d5a9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2956
    • 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:4416

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    48KB

    MD5

    cceb8c6c7bb439ba754685eb68d5eac5

    SHA1

    9d4f15d111c54f298c2edf63b629ae35c959ca48

    SHA256

    873f5de587a8256a5668579968f6d2b17d20e35403ab7618d82e2248c0bc8a4a

    SHA512

    e088dc53ef55dc3f149a4185221a8046f60dc5c46c21a988b4472cab10d24c5516f5d244e57722ae73e3f9c053054bbeb253bd38f7bda6c2b882b7b722bb8650

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2956-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2956-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/2956-7-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4416-17-0x0000000001F80000-0x0000000001F86000-memory.dmp

    Filesize

    24KB

  • memory/4416-23-0x0000000001F60000-0x0000000001F66000-memory.dmp

    Filesize

    24KB