Analysis

  • max time kernel
    133s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2024, 10:56

General

  • Target

    2024-05-01_53eca567ec42ab7c6cb31c42d733b290_cryptolocker.exe

  • Size

    79KB

  • MD5

    53eca567ec42ab7c6cb31c42d733b290

  • SHA1

    dd94524edc3206cc730769c2c0216192a973e50a

  • SHA256

    bf3a68016ac4cd3fc1d421c52ed4ca81c20292b85f2ce5a9cec33a07d69dd71a

  • SHA512

    9db83bd2d7990b27e21853203025b4555ead9f7a6394edb2c0ee46939f242d67db21477762b52a5ed07a0549343c82099970d432578b2365e9bbfcd2bbe84ba9

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWaO2:vCjsIOtEvwDpj5H9YvQd2z

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\2024-05-01_53eca567ec42ab7c6cb31c42d733b290_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-01_53eca567ec42ab7c6cb31c42d733b290_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1488
    • 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:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    79KB

    MD5

    f4985b453e275424e5ca9a4a220db86c

    SHA1

    c1326f367f3ce6d6030c7c13c506feed749ecf24

    SHA256

    520f35a2e153d1501da96189f5f1bd5cdc389626602978030dafa50d5c39dcd0

    SHA512

    ab1fb7fe598ba62213ec96a3d7d7ed19236096a13f87e1735ad37abe24ead9079a003c59d4bbcf897472ac619067803709ce75aea058d69f635c1c6634e94848

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1488-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/1488-7-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/1488-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/2904-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2904-23-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB