Analysis

  • max time kernel
    131s
  • max time network
    171s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2022, 04:51

General

  • Target
    a25aaa341e7a78adbc99f96a823e1276bdfb0e0e6aabf07c1bc181c815a9737b.dll
  • Size 73KB
  • Sample221002-fgsm4ahde4
  • SHA256 a25aaa341e7a78adbc99f96a823e1276bdfb0e0e6aabf07c1bc181c815a9737b
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10
upx

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • UPX packed file 8 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 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 53 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a25aaa341e7a78adbc99f96a823e1276bdfb0e0e6aabf07c1bc181c815a9737b.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4152
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a25aaa341e7a78adbc99f96a823e1276bdfb0e0e6aabf07c1bc181c815a9737b.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3756
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of UnmapMainImage
        • Suspicious use of WriteProcessMemory
        PID:860
        • 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:800
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:3560
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3560 -s 208
                6⤵
                • Program crash
                PID:1864
            • 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:4804
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4804 CREDAT:17410 /prefetch:2
                6⤵
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:4840
            • 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:5072
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5072 CREDAT:17410 /prefetch:2
                6⤵
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:3768
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3756 -s 620
          3⤵
          • Program crash
          PID:4264
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3756 -ip 3756
      1⤵
        PID:1848
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3560 -ip 3560
        1⤵
          PID:2120

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              WaterMark.exe

              • Path C:\Program Files (x86)\Microsoft\WaterMark.exe
              • Size 60KB
              • SHA256 ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed
              • MD5 SHA1 SHA512 SSDEEP

              WaterMark.exe

              • Path C:\Program Files (x86)\Microsoft\WaterMark.exe
              • Size 60KB
              • SHA256 ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed
              • MD5 SHA1 SHA512 SSDEEP

              7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
              • Size 471B
              • SHA256 c9eee793aa4aa79f35d393f9f1d863483aaf4004dea6ac19bda868e92a71f8bd
              • MD5 SHA1 SHA512

              7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
              • Size 404B
              • SHA256 62b38c3af61afa3683573179f415992d5ca9fdb6bbd0a89e290880b0d347b5ab
              • MD5 SHA1 SHA512

              RecoveryStore.{CB335D50-4226-11ED-89AC-F6DE28FD18F9}.dat

              • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{CB335D50-4226-11ED-89AC-F6DE28FD18F9}.dat
              • Size 3KB
              • SHA256 93966a5b74886b907ab7c3021e54c089a9fcd8753c2505622ad8859f32aa9bb9
              • MD5 SHA1 SHA512

              RecoveryStore.{CB35BEC6-4226-11ED-89AC-F6DE28FD18F9}.dat

              • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{CB35BEC6-4226-11ED-89AC-F6DE28FD18F9}.dat
              • Size 5KB
              • SHA256 f20f8ec2bdd7f10bec1cb6fa0278fd4e3c6edefbc79c0c369979c108bf52c5c3
              • MD5 SHA1 SHA512 SSDEEP

              rundll32mgr.exe

              • Path C:\Windows\SysWOW64\rundll32mgr.exe
              • Size 60KB
              • SHA256 ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed
              • MD5 SHA1 SHA512 SSDEEP

              rundll32mgr.exe

              • Path C:\Windows\SysWOW64\rundll32mgr.exe
              • Size 60KB
              • SHA256 ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed
              • MD5 SHA1 SHA512 SSDEEP

              memory/800-151-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/800-154-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/800-155-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/860-141-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/860-139-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/860-138-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/860-137-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/860-136-0x0000000000400000-0x0000000000421000-memory.dmp

              memory/3756-140-0x0000000010000000-0x0000000010016000-memory.dmp