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Analysis

  • max time kernel
    73s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/11/2022, 10:26

General

  • Target

    c28e85cd2d94078ebc964dc23d59ab50b08f6bed3f3bc62cb04845b52429dad6.dll

  • Size

    1.4MB

  • MD5

    2a68a3cf62c3e481d9fea10b44427d90

  • SHA1

    fbbb27343f9a1c64c981d508b2196b5330ab83b9

  • SHA256

    c28e85cd2d94078ebc964dc23d59ab50b08f6bed3f3bc62cb04845b52429dad6

  • SHA512

    51bb2b0b95423f4490008edd39ded18f69e284368ff1dfd0b796b61f0508479ebd1c5b4664045b4c9a6e16d7a6bf3018888425fe868dfbfd414a3136c822ad0b

  • SSDEEP

    24576:I05V+F+mYxMiKUvDlRopK0wDDGB+YbqT4euiXaCVyqE0iDuY:I0/V865RL0wvGBxK4VDu

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c28e85cd2d94078ebc964dc23d59ab50b08f6bed3f3bc62cb04845b52429dad6.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c28e85cd2d94078ebc964dc23d59ab50b08f6bed3f3bc62cb04845b52429dad6.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3736
      • C:\Windows\SysWOW64\rundll32Srv.exe
        C:\Windows\SysWOW64\rundll32Srv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:3628
        • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
          "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1476
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe"
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3076
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3076 CREDAT:17410 /prefetch:2
              6⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:1904
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3736 -s 628
        3⤵
        • Program crash
        PID:3304
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3736 -ip 3736
    1⤵
      PID:3780

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\Microsoft\DesktopLayer.exe

      Filesize

      55KB

      MD5

      42bacbdf56184c2fa5fe6770857e2c2d

      SHA1

      521a63ee9ce2f615eda692c382b16fc1b1d57cac

      SHA256

      d1a57e19ddb9892e423248cc8ff0c4b1211d22e1ccad6111fcac218290f246f0

      SHA512

      0ab916dd15278e51bccfd2ccedd80d942b0bddb9544cec3f73120780d4f7234ff7456530e1465caf3846616821d1b385b6ae58a5dff9ffe4d622902c24fd4b71

    • C:\Program Files (x86)\Microsoft\DesktopLayer.exe

      Filesize

      55KB

      MD5

      42bacbdf56184c2fa5fe6770857e2c2d

      SHA1

      521a63ee9ce2f615eda692c382b16fc1b1d57cac

      SHA256

      d1a57e19ddb9892e423248cc8ff0c4b1211d22e1ccad6111fcac218290f246f0

      SHA512

      0ab916dd15278e51bccfd2ccedd80d942b0bddb9544cec3f73120780d4f7234ff7456530e1465caf3846616821d1b385b6ae58a5dff9ffe4d622902c24fd4b71

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      471B

      MD5

      cb295ed32b0acd9eac87bcc961fb315a

      SHA1

      a580f2d38c9d1611e25b6aaa3d79b54eb34d3ebe

      SHA256

      980abeaa872503211925db8acf8bdcdff0bc3c6deb2182fd698f6a444d2625be

      SHA512

      974f48bdfb8ea90a49cfa25cacc98c9a145702f4e4967dd6ffddd5eaee6144189499682e80b342708e04f812006314b04e5715492170d0f63c7b0530e9cd399a

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      434B

      MD5

      59d5552dc1d2a1e5f05ef20348e157fa

      SHA1

      41d61c267a2b71cba13c1a3a7d3543abd7998b61

      SHA256

      f253c244d1d09493cc058f68b88de5ad860498d2b985cfd8a69179fa985c6f41

      SHA512

      c3d15d81c1997dc504448383d47aaf8be4779a082333e20b7a03a88db1c846a4fea5c8ae15214f55a1da568b10e0de48e7adc8b1559f8fb71dd646363fa157cc

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      55KB

      MD5

      42bacbdf56184c2fa5fe6770857e2c2d

      SHA1

      521a63ee9ce2f615eda692c382b16fc1b1d57cac

      SHA256

      d1a57e19ddb9892e423248cc8ff0c4b1211d22e1ccad6111fcac218290f246f0

      SHA512

      0ab916dd15278e51bccfd2ccedd80d942b0bddb9544cec3f73120780d4f7234ff7456530e1465caf3846616821d1b385b6ae58a5dff9ffe4d622902c24fd4b71

    • C:\Windows\SysWOW64\rundll32Srv.exe

      Filesize

      55KB

      MD5

      42bacbdf56184c2fa5fe6770857e2c2d

      SHA1

      521a63ee9ce2f615eda692c382b16fc1b1d57cac

      SHA256

      d1a57e19ddb9892e423248cc8ff0c4b1211d22e1ccad6111fcac218290f246f0

      SHA512

      0ab916dd15278e51bccfd2ccedd80d942b0bddb9544cec3f73120780d4f7234ff7456530e1465caf3846616821d1b385b6ae58a5dff9ffe4d622902c24fd4b71

    • memory/1476-140-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/3628-139-0x0000000000400000-0x000000000042E000-memory.dmp

      Filesize

      184KB

    • memory/3736-141-0x0000000010000000-0x00000000101B1000-memory.dmp

      Filesize

      1.7MB