Analysis

  • max time kernel
    125s
  • 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
    12/05/2024, 04:03

General

  • Target

    2024-05-12_7137d6e20f39c01693b01a9f674928a0_cryptolocker.exe

  • Size

    38KB

  • MD5

    7137d6e20f39c01693b01a9f674928a0

  • SHA1

    bb00039e93822e76de3839b7e896b40eeec17438

  • SHA256

    cd870ceacaee02b031006a8f3bf5ab66973fc54a547cf6d88c33bc95f5ae2dea

  • SHA512

    6929024191ad3cc3ad5bef3d7066bef79da993eff695a98e7d4a98e89245e6213841d98e9321308b4011efe1f33374b6224a40cb6538ee634f267461ea21b7db

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenUq:ZzFbxmLPWQMOtEvwDpjLev

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-12_7137d6e20f39c01693b01a9f674928a0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_7137d6e20f39c01693b01a9f674928a0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4288
    • 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:1480
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4036,i,17096020621006928097,15544233752327415349,262144 --variations-seed-version --mojo-platform-channel-handle=1320 /prefetch:8
    1⤵
      PID:5092

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

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

            Filesize

            38KB

            MD5

            ecb238db077c0a4740cd67a4a52262ce

            SHA1

            1cde09878c51b4e058cd52867cb53f1517b62d80

            SHA256

            fbeed062a95d0ecbc043a4e86c1f55ed5531aab4ec26727d753b82ba1d5105cc

            SHA512

            91d57ccc92876451e2b20242f93244d0ce40c40e61a8b01352ece8294ca98b1d4ee258ad1fbe181308965276823722e689e1bad1d506125457deab68615923e8

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

            Filesize

            315B

            MD5

            a34ac19f4afae63adc5d2f7bc970c07f

            SHA1

            a82190fc530c265aa40a045c21770d967f4767b8

            SHA256

            d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

            SHA512

            42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

          • memory/1480-18-0x0000000002090000-0x0000000002096000-memory.dmp

            Filesize

            24KB

          • memory/1480-17-0x00007FFCDAA90000-0x00007FFCDAC85000-memory.dmp

            Filesize

            2.0MB

          • memory/1480-46-0x00007FFCDAA90000-0x00007FFCDAC85000-memory.dmp

            Filesize

            2.0MB

          • memory/4288-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/4288-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/4288-8-0x00007FFCDAA90000-0x00007FFCDAC85000-memory.dmp

            Filesize

            2.0MB