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Analysis

  • max time kernel
    117s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 02:38

General

  • Target

    2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe

  • Size

    40KB

  • MD5

    5798129b90867e8beb3fd7f908119045

  • SHA1

    2a9cfce4c4685a7ffed148a18e008779cbc35697

  • SHA256

    4b52d1e7bc56361d89ca1519cd507c0fd0dc9c3d5325e373c2a460f4e53241b7

  • SHA512

    1ca113366975c33b55090bdaa980ab4fdb2efa5fa8b592d2c436290e35da1fd64fdc5783e66f6bb33046fa8845bf2e15f357702f76adbf933d2faf10e46fa5e9

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnISct/:m5nkFNMOtEvwDpjG8hgp+

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 6 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_5798129b90867e8beb3fd7f908119045_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_5798129b90867e8beb3fd7f908119045_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1512
    • 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:2368

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\Tar1942.tmp

    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

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

    Filesize

    40KB

    MD5

    5b81806536420e4086e37a9cadc6bfd2

    SHA1

    d0e865dfc97731bc4bc5ce37e909c96cca0b97e1

    SHA256

    7547b7667a67bbea5a55cc585f15cd519596fc201816f8f16129980f13c281ff

    SHA512

    5078d918b4b18ed3c04bbc62950a01ed31b3539f607c90c9005dd83fdf841e42e01d521c36d723763631baf0bd80e77a6d910fbed043d5e98633ac516a03ed3f

  • memory/1512-12-0x0000000001E10000-0x0000000001E1E000-memory.dmp

    Filesize

    56KB

  • memory/1512-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1512-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1512-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1512-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1512-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2368-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2368-21-0x0000000000250000-0x0000000000256000-memory.dmp

    Filesize

    24KB

  • memory/2368-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2368-96-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB