Analysis

  • max time kernel
    91s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-02-2024 07:21

General

  • Target

    2024-02-14_f817945c1440fc889eade88d9abafddb_cryptolocker.exe

  • Size

    79KB

  • MD5

    f817945c1440fc889eade88d9abafddb

  • SHA1

    f022ffaa5853d450b9736dc60c6b206d654c4cbf

  • SHA256

    9c4a6deb2bdfbf4a44f6c0e1dcaba0000a77debdb50b3ff86a5d6e7f224ea69e

  • SHA512

    64ef20b97b2f572eba6ff9166d625c20e390534be80b1c35280e24f3d2cb480559f3922b1ef5d3dfe7e00adfddf0d2092ef9708784fcbe0ea4704ad25a473978

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufL+3t:vCjsIOtEvwDpj5H9YvQd2a

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\2024-02-14_f817945c1440fc889eade88d9abafddb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_f817945c1440fc889eade88d9abafddb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1312
    • 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:2380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    79KB

    MD5

    f09cf30510e57148677aa296dc5d1ccb

    SHA1

    21b95bd701fd0e1d1ae5a6f8ab6703e6c5b22fef

    SHA256

    3992c025ebdb08d1a05526662ed7e9ced92b20c8e40d68fbd637019fd1098e0a

    SHA512

    f0970052a4ab5dc71d66406c69e65f2a9f8da5c35a5bc2cdcb7f5dfca07e62d32694beb6f2c56dc8e11c7749f2eb282fe5e33527b00f66898603d513ae3f2caf

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1312-0-0x00000000006F0000-0x00000000006F6000-memory.dmp

    Filesize

    24KB

  • memory/1312-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

    Filesize

    24KB

  • memory/1312-2-0x0000000000710000-0x0000000000716000-memory.dmp

    Filesize

    24KB

  • memory/2380-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2380-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB