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Analysis

  • max time kernel
    120s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 03:42

General

  • Target

    2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe

  • Size

    36KB

  • MD5

    3f2a5034789c16c6822168654690a477

  • SHA1

    4a97383a73917a74ac50ae6644b283c23f1440eb

  • SHA256

    fcba8cfb486c838536da27fd70d55fb9bb6f71ef3867c219d637ee233b6a1abc

  • SHA512

    95f06cff164de7ca9b6c428b342b61f66f1e86ba6ce9cd4dbf60132d6b35b3dcd4e6089388adb4b20cac394bb8cde94ae696e5f7cfb9a01c1903a1c8187a3850

  • SSDEEP

    384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRCO:btB9g/WItCSsAGjX7e9N0hunRCO

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4932
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\gewos.exe

    Filesize

    36KB

    MD5

    a7d5fc3ab38c4f9b4c9e9fecb035d099

    SHA1

    09dd8940462cc8c6a8cdc4087690defa1fadcd1a

    SHA256

    846c340fde78a531c223090689d153fe610dcd45caabcd33aa0667c0a562ab15

    SHA512

    ecd318a9e52972cdec021849ecbdbdb45d9ccffc0f9866dcd79082082321bf13e5cb273490f56dcd90f80e1f1ece1747630380c70b4f838555aff79479033100

  • memory/4612-25-0x0000000002010000-0x0000000002016000-memory.dmp

    Filesize

    24KB

  • memory/4932-0-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4932-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/4932-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB