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Analysis

  • max time kernel
    119s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 11:42

General

  • Target

    2024-02-28_00f4dcf11f38c3d7475952e44a7691a3_cryptolocker.exe

  • Size

    82KB

  • MD5

    00f4dcf11f38c3d7475952e44a7691a3

  • SHA1

    1ec31749c330fb577833b2e8ea77f3f8187fe0f5

  • SHA256

    da26de73b5c0207a269e1b7ce507ad99f20a7aa851f553ded0b783c0dffab1e8

  • SHA512

    07e712db2b487a167254bef945f93cdd2f85c916a4b4642269ef95e64d82c3ac06b1619d0ebadc7f3f24a7481a19a07630647725325b3664381f5f55903ec47a

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAe5/:TCjsIOtEvwDpj5HE/OUHnSMH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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_00f4dcf11f38c3d7475952e44a7691a3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_00f4dcf11f38c3d7475952e44a7691a3_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:848
    • 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:2160

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\Tar53E1.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

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

    Filesize

    83KB

    MD5

    8d9458f52fd52c9e0663438a3a9615fc

    SHA1

    06a486e40342c9e2d5bf24849c5c411a81d7a3dc

    SHA256

    b7458cb1073cb04591cf4355332cd4e304e4fe1bf04fd841a8235833a0f1cabb

    SHA512

    4cb05ec21cfd8113cf771acce637fb03569009745c24b4995358371494f4f0974662e851b5e4140dda2965cd1a1314cfb8bc60b1e39aff17e83cbf027aeb127a

  • memory/848-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/848-1-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/848-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/848-3-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/848-15-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2160-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2160-18-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2160-20-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2160-95-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB