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Analysis

  • max time kernel
    148s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/04/2024, 05:02

General

  • Target

    2024-04-06_d04b0a4aa0ccc4e58ff177fe640d8970_cryptolocker.exe

  • Size

    38KB

  • MD5

    d04b0a4aa0ccc4e58ff177fe640d8970

  • SHA1

    b2bff18cd5dd3e637f68dd29545145e348d258aa

  • SHA256

    ec2443a6c52bae593591b1ca9686ee9a268747b2e3436f76b7024204bac1845c

  • SHA512

    f51328aa00d1e2ab8c3508b368d6e86dd18771d683ce76414710bd8215a9b49787d79350f31df545e7b787276eaecde9d1c5a56b004106a5fc90d48a02963abb

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/UkRYzrB:vj+jsMQMOtEvwDpj5HcSY/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\2024-04-06_d04b0a4aa0ccc4e58ff177fe640d8970_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-06_d04b0a4aa0ccc4e58ff177fe640d8970_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3992
    • 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:4612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    36ec21c519b2684c166b53980914f2fc

    SHA1

    36fe9e8e61bb2a8cae692ca83057392449a6527c

    SHA256

    f1261a3622f42ea608f543b2007bb94373a2a4ecf34640207b72f996900a5f36

    SHA512

    5a2c30b00b57f00236406cd426f9842ded6cf2fa6dd8072fd3561f62e4cd9e7ffe675476d159fcc3b54f8f8ab014c32578a3ad6cb651f533432c930b9707a69e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3992-0-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/3992-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/3992-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

    Filesize

    24KB

  • memory/4612-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4612-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB