Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 17:45

General

  • Target

    2024-05-11_27c2fbfa4523abe0f3c6af62314df925_cryptolocker.exe

  • Size

    91KB

  • MD5

    27c2fbfa4523abe0f3c6af62314df925

  • SHA1

    f432ca3bd3a92fd26481b1d8689dbfc86a4061fa

  • SHA256

    c71bb638d269493a9187632f195351e20963c601154c549980caf31c322d3fba

  • SHA512

    edce2a2a83cad3c09466cee7cfeb27796919915385f8df0184fe35eb8b4fc17e17f3cacdc234d26edab23f9299cfa1619af26158ae00e0a92bbba06d778745c0

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQoL:vCjsIOtEvwDpj5H8zPsg

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-11_27c2fbfa4523abe0f3c6af62314df925_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_27c2fbfa4523abe0f3c6af62314df925_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2092
    • 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:1852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    48b20a0e5725d25f7b8e81b78cec6292

    SHA1

    7f9e5a2c801560eb138feba174bae325b9a500c7

    SHA256

    6c8ba7e0a76dcb7aa2b5cfb7cb1471333f3911a7ce0ef2eccc974f9a95e90345

    SHA512

    fb8e30f25e722a4bd7cf321719b95432d04a649eb2f372237282010fdad9c6c740bee5207b39fb8a1b3dd6be85e7065fd208b522da76283feac04d7ea62c4dfc

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1852-18-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/1852-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2092-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2092-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2092-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB