Analysis

  • max time kernel
    119s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/02/2024, 14:38

General

  • Target

    2024-02-04_c9ddc8060a4220b7b67f857ed637c81e_cryptolocker.exe

  • Size

    36KB

  • MD5

    c9ddc8060a4220b7b67f857ed637c81e

  • SHA1

    d9b6a7c6f34d6a6bc90ea708d31a413c1fa98f27

  • SHA256

    eb442f42396d20dd84c5717eba3c09e4edd62f7d745a67fe611e27ac19d84919

  • SHA512

    7743972e05ff0fd7dc24655d735d4918b3c702d1be0a07ed55d10694d9425c59678c8e50468c5de71f1c97a61a27e38b710a8105172f3a1ff607713e60c11ed4

  • SSDEEP

    384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbigDE:bAvJCYOOvbRPDEgXrNekd7l94i3pi3

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\2024-02-04_c9ddc8060a4220b7b67f857ed637c81e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-04_c9ddc8060a4220b7b67f857ed637c81e_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2004
    • 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:1068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    344B

    MD5

    b0e7a89afb2cdc16adb5d2f5e606c298

    SHA1

    871d1518abb7a34ba94dd270bc0ef2da87b8c23f

    SHA256

    dca2704c871b4d6f50232984f6374e7455e128beb4f2ed4bb3c202f6dd8f1e62

    SHA512

    060c86a5ddd4dcb455e7afba904d5951e8b779b435c23040177d64c3e7753e31161e9704965ccc79acb37cfd16945044df350363aaee909685abdb44fe2bce53

  • C:\Users\Admin\AppData\Local\Temp\Cab679B.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar682A.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    36KB

    MD5

    a317d83b884a936963c74a940c5d794d

    SHA1

    e388aa549d25c0cbb1ad3e6aab0df1c3ec747dc4

    SHA256

    71dc94683d4ecbdbb90e901fe24ea3fbc8752b4e8eaca7c491634cde786dcf79

    SHA512

    512a3be4fe8092575af81adbc677e6a8de6ee61bd213caf085fd592ad5380f03109abb2522aa1a68ac6623ff1f2fc89a141e21bbe8cac620cb26ecf2638532bf

  • memory/1068-18-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2004-0-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2004-2-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2004-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB