Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/05/2024, 07:08

General

  • Target

    2024-05-20_f47714ef4210adfdf1b0120a69e0c8d8_cryptolocker.exe

  • Size

    83KB

  • MD5

    f47714ef4210adfdf1b0120a69e0c8d8

  • SHA1

    f30e1c7ac02d1c9838c8066fdb504037153f5971

  • SHA256

    93f8e98285ba7e899059a682767d40bed5c16ff7d90072f0c566a7ce7d278aa4

  • SHA512

    e9e75549ab2c0983efe69587d4ba2ca2e0e449192427ff3aec6ac214e095d01f8340661c11b1bfd3228fbf58e7532bdf7d49d31517c75676c8d531f956da63e4

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrCq:TCjsIOtEvwDpj5HE/OUHnSMD

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-20_f47714ef4210adfdf1b0120a69e0c8d8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-20_f47714ef4210adfdf1b0120a69e0c8d8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1376
    • 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

    84KB

    MD5

    bffc40c87b47c886049e77b0cf7b5e65

    SHA1

    2a0119b4459c5205ba39d6eb8390272f03b1d6a4

    SHA256

    2d4ee63dc83764b1636b9d8caa8577a9e0ead3a7a228e3712eedd9f2db171fe1

    SHA512

    9fd734777542419572bb7d5752c983db722a9dd551e7300b50deb0febed1ded35fde00acc95928d56b397e93e18d84dbe16b523ceea688a371ff1abd821a78d2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1376-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1376-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1376-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1376-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1376-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2084-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2084-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2084-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2084-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB