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Analysis

  • max time kernel
    141s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 15:03

General

  • Target

    2024-05-22_ca8bd51b36e7e7e15d57723a747dab55_cryptolocker.exe

  • Size

    48KB

  • MD5

    ca8bd51b36e7e7e15d57723a747dab55

  • SHA1

    ed5db1b836c25189f61a2f7faed9657c916c5d1f

  • SHA256

    434f1228e2dd672ff93ebd09dea915fe39a5ad6074acbee21d3dd7b8d5ffc237

  • SHA512

    0cd4edc6b684034ea3b00e685238bb4f03d8080a31665166242553928b4f23b33dbb38fdaf8789d0e89fdd0358c7d95fa6ff84998b5600fb57ffc902b43c95f5

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRh+Ep69:xj+VGMOtEvwDpjy+TRh+EU9

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_ca8bd51b36e7e7e15d57723a747dab55_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_ca8bd51b36e7e7e15d57723a747dab55_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3568
    • 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:4304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    fcd8d767edcbb0b19d0d69020aaaa3a2

    SHA1

    514e4f49284afef624c1a2c975dcfb97442b433c

    SHA256

    2daf66a5f529b4439149df32f6b910160499e29eae22d487620db2dae460f212

    SHA512

    7a8c1317e80cae6293dc55414b36c872ae9255778a29eae7fbd6bb814f20321ceefbf26fef5f8ff4a2b3d5d4d8fc3bad81cbbebc045875bf725884e681efd419

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3568-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3568-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3568-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/3568-9-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3568-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4304-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4304-21-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/4304-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB