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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 10:45

General

  • Target

    2024-05-09_eea599de3fbc1ce7e3a3012af2f74a6d_cryptolocker.exe

  • Size

    56KB

  • MD5

    eea599de3fbc1ce7e3a3012af2f74a6d

  • SHA1

    3560904aeeb5e0994398889c3b0d29eafc8440b5

  • SHA256

    9220d0334dbb636157cf84f4672c25a532186a9c572a644da1ef84ea4d63e242

  • SHA512

    f2d2644b084a9aae48cb4414475795cf4ec6c08833dc353e3d750a268da8108331e5dbbf6a9a15747615c0ba2ab700932a60ae79af17bf44674621bbdcef5aa7

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCW1nw71TkhsiPn1YFv6dl4G8:vj+jsMQMOtEvwDpj5HH1nw73KOFiO

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-09_eea599de3fbc1ce7e3a3012af2f74a6d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_eea599de3fbc1ce7e3a3012af2f74a6d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3008
    • 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:1208

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    9e3ca0d6d8bca4470d56a2a9980bd7d7

    SHA1

    c15c3fcf054a688967bc1dd315dade5f8a3a808a

    SHA256

    72769c8dbf73ba1a6ee2045f5730eddddf9651c6057f0b7291a53c8ddc356d6d

    SHA512

    64450ddf598f9876fa170d5a2860e537963f7a91394eede2d2e803204de1c817e25701d46520aa7cacd5081e46290cfd2a61807cf0823e15c18c78b0b7fa9d23

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1208-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1208-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3008-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3008-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/3008-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB