Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-01-2024 23:08

General

  • Target

    2024-01-18_9bcd1eae370eff1d39f81dc4d42a61f5_cryptolocker.exe

  • Size

    68KB

  • MD5

    9bcd1eae370eff1d39f81dc4d42a61f5

  • SHA1

    d44b84f1058d624b4f67908abd1d730bdfe979bc

  • SHA256

    be7c703cc1eecb9c0d352dd5792a1bd41f8e596cb9960ff713fc5adb8113121b

  • SHA512

    3df5ddd607b9202729ea08cc6942504cf3d53cc8ddc6c93c98c72f5d6645f65c0a652c37365436a890f58bd3a4d8f4dea491575b61792424645befc68c7994b4

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RI:vj+jsMQMOtEvwDpj5HZYTjipvF248r

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-18_9bcd1eae370eff1d39f81dc4d42a61f5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-18_9bcd1eae370eff1d39f81dc4d42a61f5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3928
    • 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:2272

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    d62fd79b272c2eb12b9e9a3b4fc9cdc9

    SHA1

    9c182903967a62a0bafe29dd69b0744b57be4aa7

    SHA256

    d9dd1e4066230002d3100e9b8ea91ddc3e02721eb59275932aea12ce2f028fef

    SHA512

    f69986509061cf9b995fcaeae90fbcdbaaacfcd09ec037ee7e865aef2a6c6bd0494a89041f9e053fd4281313c1966428cfeafd3222deb796c2fba5889d56ce48

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2272-21-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2272-17-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/3928-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/3928-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3928-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB