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Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/03/2024, 15:31

General

  • Target

    2024-03-28_95959b13a1354783ab9accb4235f14c7_cryptolocker.exe

  • Size

    41KB

  • MD5

    95959b13a1354783ab9accb4235f14c7

  • SHA1

    f858f0a8f161f6ff806d07d468995b7b30ff62ef

  • SHA256

    9b00d087a27c3ea6e047858aec3b6ad9cb2a580151a0921f3c06c7123c3ca9f1

  • SHA512

    79aa54c56341a6b637c38bfeaa347b05bd9867b2a0a941611139257e1a6d5b4b1f782e88ec62909ad2b979f4183497f5bd76cc0cfa5c98954fd45e63d9f8a3ec

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQL3bTyjL4P:ZzFbxmLPWQMOtEvwDpjLeU34Y

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 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-28_95959b13a1354783ab9accb4235f14c7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-28_95959b13a1354783ab9accb4235f14c7_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2208
    • 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:2992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar2054.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

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

    Filesize

    41KB

    MD5

    044e5a094b4440c72247e3656cc97d82

    SHA1

    8b6ba8e77868bcbd4346a61d9687d64533c4affe

    SHA256

    fb41d8f58e348a62a82eb9eeaeef1e596008bff911b08a30c43ba7935bf8955a

    SHA512

    d78444fdc88f91cd82ef2dd5a155d9dca416c193623c2db00bc57634be1590e0f611f6bac0b5575d027b11f00b09b71e23e2d50a57123af9b7144f9c7414e1d7

  • memory/2208-1-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/2208-0-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2208-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2208-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2992-15-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2992-17-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2992-21-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB