Analysis

  • max time kernel
    131s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-05-2024 05:15

General

  • Target

    20240526eb7a0f441398c893027baf838ce7e2d1cryptolocker.exe

  • Size

    83KB

  • MD5

    eb7a0f441398c893027baf838ce7e2d1

  • SHA1

    8ecd22e6e1298a75fc38cbe8e16f2c40e4d0d4a0

  • SHA256

    6540144d17a4f9dd65fadfc3559aa02ed94255490033e2697f831f45472293d7

  • SHA512

    27d990f091d2a5163ed9a61ca79d0ff12deae1b3118b89d00dc7010e9991cb395c684acd7415b726be20165f38792b972d13df288af162e909826837a8cb9b01

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrhcx:TCjsIOtEvwDpj5HE/OUHnSMQx

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\20240526eb7a0f441398c893027baf838ce7e2d1cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\20240526eb7a0f441398c893027baf838ce7e2d1cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4804
    • 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:2084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    83KB

    MD5

    47399ec95cd2d1a2cd8bc907996b244c

    SHA1

    2821bcf4fc998f142611582ef86f337901836b6e

    SHA256

    be1564f1f6f60c0b54885e51f66af05ca9ee45ff35830229302ee64444219391

    SHA512

    00bcc1676f0de6b72d3a53b27d53a11ceeb9772963b420af4b5bf49d20986f787b74137fb453dba9c73c56b51f04488a7a65a4f30bbfa55f3477f21f6d4a217d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2084-19-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/2084-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/2084-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4804-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4804-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4804-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/4804-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4804-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB