Analysis

  • max time kernel
    94s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 18:26

General

  • Target

    2024-06-01_57fc38a684b777866a772a9bc164ff37_cryptolocker.exe

  • Size

    49KB

  • MD5

    57fc38a684b777866a772a9bc164ff37

  • SHA1

    74452df5d3399427b057635059cd7087a9ace041

  • SHA256

    2a25cf1c8376aed23217ed52f08389a6e38668ec64525e72be76d6dd4c7e27cd

  • SHA512

    ec1e7aabc5b4a569357e10d90d9c342d883deb862130a87c41651812e9fff5fe75b6ca345263184aa617c010951c8aba9f1232f0f2a0db70ab2acb3a580cffab

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRh+Ep6e:xj+VGMOtEvwDpjy+TRh+EUe

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-06-01_57fc38a684b777866a772a9bc164ff37_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_57fc38a684b777866a772a9bc164ff37_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4936
    • 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:852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    18ebed467ea79d0091b20411cb049d84

    SHA1

    d782ce0aa126beadf0f7a43a588d972a386b00a4

    SHA256

    2e12df8282d356e234cd123d83bb816f769c1a5030ad3c186823b25cae00cd7c

    SHA512

    9dec44080b08a0939470141344b06519ed62774bf377f0229fdb1896543b01c20c01761d4854a01fe0da49d92d8d0c4b61ca4c56168de75fc2f2d1897bc0f35e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/852-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/852-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/852-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/852-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4936-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4936-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/4936-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/4936-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/4936-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB