Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25-03-2024 11:24

General

  • Target

    2024-03-25_075dbb784240f5174dd146fd38320f92_cryptolocker.exe

  • Size

    42KB

  • MD5

    075dbb784240f5174dd146fd38320f92

  • SHA1

    d20e1e3610037d710e6791f65f16fe4fad4def13

  • SHA256

    8bdf497c7cd5b06e0acb4d13407e03e144b3ea4bedd8e0efeeac28bbe10facd9

  • SHA512

    53dfdcde6ce494bc54a377a089b02cd5eb918b9a77c9ab8b2c744671167facb55f59bfc2ad8ac76a173261a95d32c90d67e7dfada517438467656d81dd84f637

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbZM+i/:bAvJCYOOvbRPDEgXrNekd7l94i3p+OMT

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 6 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-25_075dbb784240f5174dd146fd38320f92_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-25_075dbb784240f5174dd146fd38320f92_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2336
    • C:\Users\Admin\AppData\Local\Temp\demka.exe
      "C:\Users\Admin\AppData\Local\Temp\demka.exe"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      PID:2360

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    eaf3e67d13decd5ab4ce8ae69036fa9f

    SHA1

    e498193c8a552c4ef3133f608079921c895f0cfe

    SHA256

    dad5e13ac63fe26f7a4cfb5a134b84cb5ff0a0b041cbc1a9a5d89b9a37582c68

    SHA512

    34bd380a85fb61d6721c21cf58cf2fe46a5e5f6dbf3c768f3f671129f7680bd2fbbf56cda8aaa989ca7472609d69b6950448abe6a9f7e2168ef4c9db4a9bcd09

  • C:\Users\Admin\AppData\Local\Temp\Cab63B5.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar6580.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

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

    Filesize

    42KB

    MD5

    f12af926652beb891cc78c13572bbcb3

    SHA1

    df2304a40ad006e7414d642cbfa011b9ca7cf275

    SHA256

    a733c2e9f71656cbb27f18a1da68bcd5cd808311b1f0e1615ab8e353df866b5f

    SHA512

    121bdb530032db5af1b84cb87ca40ed8476c93d930762f00dbc0e126d03cecd6ec3e326d5b8ab58b783ac8bb539eac9e9bce985871fb386eff055063548dcc7c

  • memory/2336-0-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2336-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/2336-8-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2360-16-0x0000000000260000-0x0000000000266000-memory.dmp

    Filesize

    24KB