Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 06:33

General

  • Target

    2024-05-29_636c76e2fa3f127f6df39b93174f0524_cryptolocker.exe

  • Size

    80KB

  • MD5

    636c76e2fa3f127f6df39b93174f0524

  • SHA1

    499efd5220d368c17585cbaf2ec499cdb242378e

  • SHA256

    9833b48d0fa94b2f3f1af141eab1c7bd6e7d99a3c826801f5c7c854d58f16b56

  • SHA512

    e2848bcbe4722986753b1397e05eb6cbaff5af83e3b6f8db1fb8e4b0bc6eedce75bfe6bfbec9ce1770d396d83fcdf6ba45eb14044c6ac4af782ab28d9e166eda

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWT+Us:ZVxkGOtEvwDpjcaxn

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-29_636c76e2fa3f127f6df39b93174f0524_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_636c76e2fa3f127f6df39b93174f0524_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3004
    • 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:3972

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    80KB

    MD5

    1d9f528232a02c044afa4a9898ffab67

    SHA1

    a568597f07217f3eb537fe5d5ad200a5ac1c8a36

    SHA256

    6f9c3de5a17b16ba0aa640f9f155d91712fe1357bddb9f2fbb9b432de7a39fba

    SHA512

    01c2db08c1fc2ff55220843187ca95b20a3a888f2e5c0ed898fe64b1c8738696901e3f7ba9a4672bd889d0bea50b12ee9ab986700b8a08bea39ec874dea1096e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3004-0-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/3004-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3004-2-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/3004-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3004-17-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/3972-18-0x0000000000460000-0x00000000004A0000-memory.dmp

    Filesize

    256KB

  • memory/3972-20-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB