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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, 16:38

General

  • Target

    2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe

  • Size

    83KB

  • MD5

    449a114f8b7257cd1e6c199b89749820

  • SHA1

    9cfe638231d30acc771de6501dab20bd01dd0bb5

  • SHA256

    a62e10ba48930ba338e5b47dfec4dbfc61c577fb0013e05ebe6e842d93e86978

  • SHA512

    ec88a09dcbee53438cfe425f6ba1d2392c1dae9ace4514eb92003fd97d633ed5baa843429a4d2024ac318a06986d2ca4a85a188e038f3d0b6985d43156f51e6d

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAe59:TCjsIOtEvwDpj5HE/OUHnSMF

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_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2164
    • 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:2604

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\Tar2D9D.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

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

    Filesize

    83KB

    MD5

    760b7946a426106701c5d47ced687c21

    SHA1

    1a5916df6825efbd3c5f33edb739cf7b3fc6c490

    SHA256

    64389b072a36d85c22ffaf7d811e5b5b52aaa906b1ba3be73fb6034ef66a870c

    SHA512

    55a7fc0a7b39bc6fbcaca20e98326c430f9071932dc20cadb8c7e9cfa564dde638323856047ec9758007e2a8047a19b4e75f6cc5de702f444e23106177079eaa

  • memory/2164-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2164-1-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2164-3-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2164-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/2164-14-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2604-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2604-18-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2604-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2604-95-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB