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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    15/06/2024, 07:37

General

  • Target

    2024-06-15_72eff5ee9b92c90f650764c0cbd7cbb3_cryptolocker.exe

  • Size

    33KB

  • MD5

    72eff5ee9b92c90f650764c0cbd7cbb3

  • SHA1

    623ae89cc0d0bc5918907cb2954332998d3e55b1

  • SHA256

    ad4de6c98b3f7a8071af3687c3238ce6b3ee6d885de911b41d8b417450985c98

  • SHA512

    a5e7c1b9cafb6c92e73062682462fea15799932d0a1aad35b5962a10e574ac2cafd14b9890e1ac84b67ac5c8fc11559879c1f1fec6aaab6fc14cd18d6fc4affe

  • SSDEEP

    768:bROjawZEjbhxnbcuyD7U9kXfn62tH/1/LpP+w:bRO2wZEjbnouy8Gv6iH/NLpN

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-15_72eff5ee9b92c90f650764c0cbd7cbb3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-15_72eff5ee9b92c90f650764c0cbd7cbb3_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:1284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    33KB

    MD5

    cc1f1b45ac56b31982c3cb8357e3be2c

    SHA1

    61f1e69ec1d63b348568c562e0aeee67aee6d5a9

    SHA256

    d2883988366d112a21b2ce15499c5f30a60e24f8082897a4312824ef83c5990a

    SHA512

    7e04318764ece5aa546db83aaaf40f4493bed2d944595ebe5c2c2b8380632fbabc353879d212758b32685ddbcd1ff825189bfd73210f099c80a07e985eef8a32

  • memory/1284-15-0x0000000000400000-0x000000000040D000-memory.dmp

    Filesize

    52KB

  • memory/1284-24-0x0000000000410000-0x0000000000416000-memory.dmp

    Filesize

    24KB

  • memory/1284-25-0x0000000000400000-0x000000000040D000-memory.dmp

    Filesize

    52KB

  • memory/2804-0-0x0000000000400000-0x000000000040D000-memory.dmp

    Filesize

    52KB

  • memory/2804-8-0x00000000003E0000-0x00000000003E6000-memory.dmp

    Filesize

    24KB

  • memory/2804-1-0x00000000003E0000-0x00000000003E6000-memory.dmp

    Filesize

    24KB

  • memory/2804-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB