Analysis

  • max time kernel
    122s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    21/02/2024, 03:29

General

  • Target

    2024-02-21_db01fa163a477b7a6af4b05eb5249ffc_cryptolocker.exe

  • Size

    39KB

  • MD5

    db01fa163a477b7a6af4b05eb5249ffc

  • SHA1

    3d3bf36d35b0fe72bb446fded53800688acfa509

  • SHA256

    c6d21ca698324630d60737598ec2838b7fb8aa5fdcb3623224577cd9fbdf2729

  • SHA512

    782874ca39676d901067acfb37ec6a60858a57faedf3af3b8b0ece485fb7c09a27c60167b4e255f1d5b534ba69b3e233a3a1434304527dc919e162f8aa3d30f1

  • SSDEEP

    768:bAvJCYOOvbRPDEgXrNekd7l94i3py/yLFka:bAvJCF+RQgJeab4sy/a3

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\2024-02-21_db01fa163a477b7a6af4b05eb5249ffc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-21_db01fa163a477b7a6af4b05eb5249ffc_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1736
    • 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:2468

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

    9bd990004ea8aa5a472417a77dda3ba8

    SHA1

    a0828ea69761b4d9790ccee55c86b3b51d729904

    SHA256

    edd4487c1301193529257e0d9038b5f461a05a101dd6b4a1f9a7c771317f57b2

    SHA512

    3b0350f7ff8b1fab504733201096298675ffb1e444394db686b9a9a8705c407728c675386e8178821a7acda34d022012f91d24c9bff6f2adbd2ec6acbc51e856

  • C:\Users\Admin\AppData\Local\Temp\Cab4684.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar4723.tmp

    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

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

    Filesize

    39KB

    MD5

    107f44aaaf22630eb8d25987fb63de75

    SHA1

    e41d4eaca1ac866722dae961a841ca194a54c73a

    SHA256

    04c8dd000a91b1c61a84b3cee30369a81202fc7449eaa4b0f9dabf349c9b99fb

    SHA512

    04a4b61cdcb455786f03723cf3369606c56b920401c5aea17024b050d545fb1ba2b6df9d8615e8916a9e92918e0524661bac654d5356e1e060c2db5e07a5db73

  • memory/1736-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/1736-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1736-1-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2468-17-0x0000000000260000-0x0000000000266000-memory.dmp

    Filesize

    24KB