Analysis

  • max time kernel
    92s
  • max time network
    102s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    16/04/2024, 09:58

General

  • Target

    saastaja1.exe

  • Size

    880KB

  • MD5

    6945b0eb597cdd7d23e5d010638f5de0

  • SHA1

    9afbbeaa14221ba791d566d453b9d9f202faadc9

  • SHA256

    eba69e114ca3f10157b0a9131431d540cce9769c7d7c1200384a684b0796d3eb

  • SHA512

    e5c6653ad47e3e24589d566f50714f5acd0c6285cc4cfcb8a3eade01a55504777bfe63fd38f18049a2cec3e7967ce2aafd589abd027b7ac2ff1d5224c228ad49

  • SSDEEP

    24576:zAY1zr6fGAtr0xDK5N1F938+KxekDhxynSO:jhmGABUDK5N1LYbDrK

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 7 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\saastaja1.exe
    "C:\Users\Admin\AppData\Local\Temp\saastaja1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1932
    • C:\Users\Admin\AppData\Local\Temp\FWSetup\Install.exe
      C:\Users\Admin\AppData\Local\Temp\\FWSetup\Install.exe SaverInstall
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies Control Panel
      • Suspicious use of WriteProcessMemory
      PID:392
      • C:\Windows\SysWOW64\REGSVR32.EXE
        REGSVR32.EXE /s "C:\Windows\system32\Macromed\flash\swFlash.ocx"
        3⤵
        • Loads dropped DLL
        • Modifies registry class
        PID:1136
  • C:\Program Files (x86)\saastaja1\Screen Saver\RunSaver.exe
    "C:\Program Files (x86)\saastaja1\Screen Saver\RunSaver.exe"
    1⤵
    • Executes dropped EXE
    • Modifies Control Panel
    PID:4560
  • C:\Windows\SAASTA~1.SCR
    C:\Windows\SAASTA~1.SCR /s
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of FindShellTrayWindow
    PID:3476

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\saastaja1\Screen Saver\UNINSTALL.INI

          Filesize

          137B

          MD5

          295c59dffc6a90c08f6498d579dda4c6

          SHA1

          f8ccca8a6a6b38ab40133eb7a44f3e91caf47539

          SHA256

          1da1b344d041a2b70994e151acb565c9813477612e3bd20ee5ea4b5e0563cb78

          SHA512

          eea5c68db484414e769bd9993d955154b996555e64ac6c693b2a86b515f9f170618df0ac33639d628f07a804e4acfc8dd67e6274b9c33ca1cc502d9cd25363d7

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\After.txt

          Filesize

          23B

          MD5

          35cc2869875efabb0901f6d953bcd60a

          SHA1

          4c50b07c84a4f592b97836b5134ebacabcf5c83a

          SHA256

          84a250e566d105b774d03c3253c7d1e31316e03fd0ee85d817b88f2afb5a39f6

          SHA512

          b79c3eb27d3c68a06020ce49836799fdec8f6e0c073a3aec4cbf639a9c3acb7f32ab03199fcf02fe307794c106e4c13998c2f0931d22084727465c9a678deee8

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\Data.dat

          Filesize

          228B

          MD5

          a8e317a583ebfb705cb99295054e4c60

          SHA1

          10d9a713fa51751c043d903042655318762da355

          SHA256

          2ed9fecbe82dc2093af4b1227d5ec44fcac4234e4c89134f20533e6960de7786

          SHA512

          2776f359e4e5606154dbad17115ba63a8dade0abd1af58b4347c6beca6a29b4c7b00aec4c72e7564d38cb4657c9720ca665733cb5720578cac855faf96f4f8b8

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\Install.dat

          Filesize

          807B

          MD5

          f2616c4b5fb511ee7510ebef8109703e

          SHA1

          6d97fcc5fc3af002a57233959a7dba8b35d0f0ca

          SHA256

          36fadbeccff61c5de4ed3f4adc199767643ce15196d93918db3dbb40060488bf

          SHA512

          b3cfadd493ee485b55274eb532625efebd922a8e85770ce83355908ef86ecd40f772ff1fe5b02b124e3036b4609f97744085a87d8a9cc5e5a5a0efbae6436e37

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\Install.exe

          Filesize

          312KB

          MD5

          13610513a38706906fd43b2fe8097f50

          SHA1

          7f25d1ab61d5a70fdd7a850b6faa6af5a3ac591c

          SHA256

          33b116aee6ef34d3c721d1a6fc16f74e4ab6ef44ac8167b51cb46fc9a6140a98

          SHA512

          b95eefc0a658285938b911b10f037f27c8dfc276524be48c8eea453ac38a36fe4c23da3410796aceb310908c884cd00687badc9c2e22580c52e5d17dcf9b0a3d

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\Install.ico

          Filesize

          766B

          MD5

          0a0495346d90aa270a0d082cb0da943e

          SHA1

          b910a557a71717a50ea49ac2a6d7669cf65f804b

          SHA256

          8f4a59760071147a691d306642fe96ede3553abfc7ea6a00860421ce6402aaad

          SHA512

          02fb518614de5557d7f840004d07ce07e81b882c5a8afa67573f00eae15ba9b2c1a24efb31fc8766b83b82ba4d6e5b833840f927fb3c86b294d0be66bb256e2a

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\Movie.swf

          Filesize

          143KB

          MD5

          7d7e881035d1bfba9ec78880ffbb2672

          SHA1

          981963c947e199ec38393ca918e42325a423c98b

          SHA256

          044776b2f4006427e2b9ae507b25b89547baee843a3840d551eabeb0e851bf82

          SHA512

          f161cfc4d7732b90fe1c2430eeee97386bc8a099b70b27b99890ace13de187984b5ef983b1d95eb89ccfcd6806368c0997574cfe2f5108a122c0f7e79336e23f

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\RunSaver.exe

          Filesize

          156KB

          MD5

          9b341cd9421c0ba2c20736a285e6a13e

          SHA1

          0c98c0116ff86d814e5246bd4c3925c2f6e6f23f

          SHA256

          f564afdcb636b7a200c16d10ca1fa456ad5c1c00f79cbd809038fba5308f31ef

          SHA512

          dfddd3b4038abf5ac1287cf4baad8ff0e060061c06dec49a974044b8bb71f1f69c55b753b2637fe2ea3476504f4a6da9ec2036dac8d5b48300d6069ab9ea6fb4

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\SWFlash.ocx

          Filesize

          396KB

          MD5

          438487c9f2c320bc607c67b3a0764934

          SHA1

          b2ec6d0f966948a7f82d5fc58ea7766fc8eeef6e

          SHA256

          3583234dfcc563b07136d4f587a7da115da7ab58f0ada12dc503af1db2014543

          SHA512

          5f9231b5461735868a63f23e47364d8e920b50309964577fbd4fc8c110d75fc20b0b538c2a03d8e26e99ba95f731ae7715a8dc0e8f113a79d560fe5d4be5f74a

        • C:\Users\Admin\AppData\Local\Temp\FWSetup\saastaja1.scr

          Filesize

          501KB

          MD5

          3adccd04db38dcea480a695f144ad58e

          SHA1

          a36665b3add76e2a94bc471f569bbddaed06abb5

          SHA256

          f10f793405dbfe56df03e304e253cdfada5075177d168a10be1fc487a1a43a50

          SHA512

          3f2954d0783fe6c6fa4a988ba1297606a3ee357934d86128ac8b6eb93fefcf9eba9446dbc72777655b9f6083666a0c6bc87f15f7f56fde4b4a87805e07ddc30a

        • C:\Windows\SAASTA~1.ini

          Filesize

          102B

          MD5

          4c66549ca62cda51be1b8e307557fc72

          SHA1

          828651d6c7479d44e42c66ebd645f98013413733

          SHA256

          88533787cd2fd991578acbb433e80b092a5a648833df18e06c79f4410054bd8b

          SHA512

          55c206980aede7dd1085c1763269500e29ac1b83ca5e73050de6a0f514a635679b18eb3e133ec141cc0ad4c768dddd2c4f9de18c62c7fb8317f87fc9205023d4

        • memory/392-13-0x00000000022C0000-0x00000000022C1000-memory.dmp

          Filesize

          4KB

        • memory/392-54-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/392-55-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/1932-17-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/3476-64-0x0000000002620000-0x0000000002621000-memory.dmp

          Filesize

          4KB

        • memory/3476-67-0x0000000000400000-0x0000000000484000-memory.dmp

          Filesize

          528KB

        • memory/4560-58-0x0000000002150000-0x0000000002151000-memory.dmp

          Filesize

          4KB

        • memory/4560-60-0x0000000000400000-0x000000000042D000-memory.dmp

          Filesize

          180KB