Analysis

  • max time kernel
    156s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 17:03

General

  • Target

    a12bf0a3cf2e618c1f39a34ef650449b851bd6ed21ada1b3be1fb801f57db832.dll

  • Size

    144KB

  • MD5

    0814cdc2c25c3a140f2c5d3e15eaec9d

  • SHA1

    2ef8fea0f1cf77984d3efa70337492299e56af3e

  • SHA256

    a12bf0a3cf2e618c1f39a34ef650449b851bd6ed21ada1b3be1fb801f57db832

  • SHA512

    a440679703ae200ee8581866411fab21f81fb34bf068be6cc4487b188af72d9597bcbb5748b8c07a9e93a071d60e56049e9c5cba22c7c7becf94e201787725e1

  • SSDEEP

    3072:Bs82mBOIO+j6iZL3oIy/+zJYAKyvE/vb7HDnrE8NgU:B6IO8PfemvSvb7c8uU

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 2 IoCs
  • UPX packed file 10 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 19 IoCs
  • Modifies registry class 31 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a12bf0a3cf2e618c1f39a34ef650449b851bd6ed21ada1b3be1fb801f57db832.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4228
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\a12bf0a3cf2e618c1f39a34ef650449b851bd6ed21ada1b3be1fb801f57db832.dll
      2⤵
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4500
      • C:\Windows\SysWOW64\regsvr32mgr.exe
        C:\Windows\SysWOW64\regsvr32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:4392
        • C:\Program Files (x86)\Microsoft\WaterMark.exe
          "C:\Program Files (x86)\Microsoft\WaterMark.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of UnmapMainImage
          • Suspicious use of WriteProcessMemory
          PID:4416
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:3716
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 204
                6⤵
                • Program crash
                PID:4236
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:204
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:204 CREDAT:17410 /prefetch:2
                6⤵
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:3508
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              PID:2228
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3716 -ip 3716
      1⤵
        PID:3132

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        59KB

        MD5

        0e0f0ae845d89c22bb6385f64a6b85fd

        SHA1

        0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac

        SHA256

        5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd

        SHA512

        baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350

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

        Filesize

        59KB

        MD5

        0e0f0ae845d89c22bb6385f64a6b85fd

        SHA1

        0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac

        SHA256

        5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd

        SHA512

        baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350

      • C:\Windows\SysWOW64\regsvr32mgr.exe

        Filesize

        59KB

        MD5

        0e0f0ae845d89c22bb6385f64a6b85fd

        SHA1

        0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac

        SHA256

        5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd

        SHA512

        baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350

      • C:\Windows\SysWOW64\regsvr32mgr.exe

        Filesize

        59KB

        MD5

        0e0f0ae845d89c22bb6385f64a6b85fd

        SHA1

        0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac

        SHA256

        5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd

        SHA512

        baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350

      • memory/3716-149-0x0000000000000000-mapping.dmp

      • memory/4392-138-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4392-139-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4392-142-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4392-133-0x0000000000000000-mapping.dmp

      • memory/4416-140-0x0000000000000000-mapping.dmp

      • memory/4416-150-0x0000000000400000-0x0000000000423000-memory.dmp

        Filesize

        140KB

      • memory/4416-151-0x0000000000400000-0x0000000000423000-memory.dmp

        Filesize

        140KB

      • memory/4416-152-0x0000000000400000-0x0000000000423000-memory.dmp

        Filesize

        140KB

      • memory/4416-153-0x0000000000400000-0x0000000000423000-memory.dmp

        Filesize

        140KB

      • memory/4416-154-0x0000000000400000-0x0000000000423000-memory.dmp

        Filesize

        140KB

      • memory/4416-155-0x0000000000400000-0x0000000000423000-memory.dmp

        Filesize

        140KB

      • memory/4416-156-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4500-132-0x0000000000000000-mapping.dmp