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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 16:39

General

  • Target

    2024-02-28_4ce89af943bca64fbc04f7ab88a86b2a_cryptolocker.exe

  • Size

    52KB

  • MD5

    4ce89af943bca64fbc04f7ab88a86b2a

  • SHA1

    d208895b49fdc264034ad413f9662ec8d0714e9f

  • SHA256

    babd15732989d0f5a9aef703f6ea45837668efe10cf61714e67d951f92c6341d

  • SHA512

    99dcec95a2c7dec5db3057a7d148c8ff6bd2f334e848f2d402a3d333ced4949c2e7259513c43d415340077e85f11dfba6dbf42e06ce370cfde801c2b238d29cd

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCW1nw71TkhsiPn1YFvPw:vj+jsMQMOtEvwDpj5HH1nw73KOFw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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_4ce89af943bca64fbc04f7ab88a86b2a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_4ce89af943bca64fbc04f7ab88a86b2a_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2936
    • 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\Tar2A62.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

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

    Filesize

    53KB

    MD5

    58fa4db54dca9cd990561137837a098a

    SHA1

    5dc9600fa5169bea81a64335ca9ca685119c45a6

    SHA256

    3a237c5cf2c3a514467a842e7ee1d5c4c57418c867241465ad4a3a7f21ab04a1

    SHA512

    672c18735b2002e8bcd7a4c7d56769c4a3923be038e1164f7f13961cdd6e2ad41add82c7bfbf2e634fe90a9bd517ff89e62fd8d3f88204ede8a1754ddca67703

  • memory/1036-15-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/1036-22-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2936-0-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/2936-1-0x0000000000350000-0x0000000000356000-memory.dmp

    Filesize

    24KB

  • memory/2936-8-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB