Analysis

  • max time kernel
    135s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2023 18:03

General

  • Target

    NEAS.2023-09-05_8de2a120cf758582f905eec1362f3b51_cryptolocker_JC.exe

  • Size

    44KB

  • MD5

    8de2a120cf758582f905eec1362f3b51

  • SHA1

    a542b829ad42c761bbfb65ea0f6c1f7f05b7ed10

  • SHA256

    ce080c244ba6667ecf76bc7675b48b472837917705560dc263f333a22854214f

  • SHA512

    707809ac20b5d7406d28229a1592aaa0cd30b645bcc5650dff9fdaa5c9be6a74d8b5862f1df3b75b1962a03718b229641730829a4104565eba0acfecc7f7f34d

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr46xdUUg:vj+jsMQMOtEvwDpj5Hczer5ir

Score
7/10

Malware Config

Signatures

  • 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\NEAS.2023-09-05_8de2a120cf758582f905eec1362f3b51_cryptolocker_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.2023-09-05_8de2a120cf758582f905eec1362f3b51_cryptolocker_JC.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2532
    • 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:2184

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    07f9a6770376a927e6628f8d9daa975c

    SHA1

    8f5ed6f70981e5aaa4e222cd78b88b1b0f134bb1

    SHA256

    60a7e1f6cefbe32b855c92b5589149c0ad7650884e6b8686dcc6898d51353e7c

    SHA512

    f18ccc4e71f4934293cd71fbdbdf5f76ed39ce7634bcd1dceb2cb378b512df9777201beed9cfe14227eecbc47161afc80619b03e89af5b9ac8c80927a7875723

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

    Filesize

    44KB

    MD5

    07f9a6770376a927e6628f8d9daa975c

    SHA1

    8f5ed6f70981e5aaa4e222cd78b88b1b0f134bb1

    SHA256

    60a7e1f6cefbe32b855c92b5589149c0ad7650884e6b8686dcc6898d51353e7c

    SHA512

    f18ccc4e71f4934293cd71fbdbdf5f76ed39ce7634bcd1dceb2cb378b512df9777201beed9cfe14227eecbc47161afc80619b03e89af5b9ac8c80927a7875723

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

    Filesize

    44KB

    MD5

    07f9a6770376a927e6628f8d9daa975c

    SHA1

    8f5ed6f70981e5aaa4e222cd78b88b1b0f134bb1

    SHA256

    60a7e1f6cefbe32b855c92b5589149c0ad7650884e6b8686dcc6898d51353e7c

    SHA512

    f18ccc4e71f4934293cd71fbdbdf5f76ed39ce7634bcd1dceb2cb378b512df9777201beed9cfe14227eecbc47161afc80619b03e89af5b9ac8c80927a7875723

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2184-17-0x0000000001F80000-0x0000000001F86000-memory.dmp

    Filesize

    24KB

  • memory/2184-18-0x0000000001F60000-0x0000000001F66000-memory.dmp

    Filesize

    24KB

  • memory/2532-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/2532-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/2532-2-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB