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Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 09:30

General

  • Target

    2024-02-28_3ba8285760e276400c94bed36a927be7_cryptolocker.exe

  • Size

    39KB

  • MD5

    3ba8285760e276400c94bed36a927be7

  • SHA1

    1f793d9e94073bbc03d932aea0c82f9d8994d9da

  • SHA256

    15f465fafedea728ea08336230af17eabcf888be4a954f822495f9255256fb4a

  • SHA512

    8b8e6004e68722d1f1a6297fe308ecb6f3cb4f47a728032bda19ece0fb9a13d4202155524cd17b65364353fe338e681ca01604d9fe9b9638d9c7239fd48c7831

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLen7n+0:ZzFbxmLPWQMOtEvwDpjLer

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-28_3ba8285760e276400c94bed36a927be7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_3ba8285760e276400c94bed36a927be7_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

  • C:\Users\Admin\AppData\Local\Temp\Tar1C3F.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

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

    Filesize

    39KB

    MD5

    987038df49b7f0367c3876cdcc91419e

    SHA1

    cbbadad24e11e4397bf4a9a098adedf1c458f1fa

    SHA256

    b709a0d7e0e1f512b472c1f5f97cff4491838587aa11983ebdfd0b48db161057

    SHA512

    ae39b72237c42c020a045de725c05b191375ac47c3a27ed3196e76c7f0bf1f7c692476cefd4ce175bba26ace1acbe2dac378a468c873246783bece512e5514cb

  • memory/1036-16-0x0000000000390000-0x0000000000396000-memory.dmp

    Filesize

    24KB

  • memory/1036-23-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1728-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1728-2-0x0000000000230000-0x00000000002B0000-memory.dmp

    Filesize

    512KB

  • memory/1728-1-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/1728-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB