Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    07/04/2022, 14:56

General

  • Target
    crypted_loader_dll_64Donat_5.dll
  • Size 151KB
  • Sample220407-sa1rcaefen
  • SHA256 41ae907a2bb73794bb2cff40b429e62305847a3e1a95f188b596f1cf925c4547
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • gozi_rm3

Attributes
  • build

    300994

rsa_pubkey.base64
rsa_pubkey.plain

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • Uses Tor communications 1 TTPs

    Malware can proxy its traffic through Tor for more anonymity.

  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of SetWindowsHookEx 48 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\crypted_loader_dll_64Donat_5.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2064
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\crypted_loader_dll_64Donat_5.dll
      2⤵
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:2708
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2448
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c start /min forfiles /c "cmd /k @path -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwAUgBvAHcAbABvACcAKQAuAE0A & exit" /p C:\Windows\system32 /s /m po*l.e*e
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3116
        • C:\Windows\system32\forfiles.exe
          forfiles /c "cmd /k @path -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwAUgBvAHcAbABvACcAKQAuAE0A & exit" /p C:\Windows\system32 /s /m po*l.e*e
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3448
          • C:\Windows\system32\cmd.exe
            /k "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwAUgBvAHcAbABvACcAKQAuAE0A & exit
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:3728
            • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
              C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe -ec aQBlAHgAIAAoAGcAcAAgACcASABLAEMAVQA6AFwAUwBvAGYAdAB3AGEAcgBlAFwAUgBvAHcAbABvACcAKQAuAE0A
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4156
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -E JwBwAGEAcgBhAG0AKAAkAGgAcgBoAGMAZQB3AGQAYQB4AGUAKQA7AFsAUwB5AHMAdABlAG0ALgBDAG8AbgB2AGUAcgB0AF0AOgA6AEYAcgBvAG0AQgBhAHMAZQA2ADQAUwB0AHIAaQBuAGcAKAAkAGgAcgBoAGMAZQB3AGQAYQB4AGUAKQAnAA==
                6⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1704
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -E JwBwAGEAcgBhAG0AKAAkAGQAZgBvAG0AaABlAGwAcwBvAGgAKQA7AFsAUwB5AHMAdABlAG0ALgBUAGUAeAB0AC4ARQBuAGMAbwBkAGkAbgBnAF0AOgA6AEEAUwBDAEkASQAuAEcAZQB0AFMAdAByAGkAbgBnACgAJABkAGYAbwBtAGgAZQBsAHMAbwBoACkAJwA=
                6⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:2684
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
                "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\ndjxipna\ndjxipna.cmdline"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:3416
                • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESDEA8.tmp" "c:\Users\Admin\AppData\Local\Temp\ndjxipna\CSC416600887ABE4DAFBA1C71CE45A485C3.TMP"
                  7⤵
                    PID:4356
                • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
                  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\con4ohii\con4ohii.cmdline"
                  6⤵
                  • Suspicious use of WriteProcessMemory
                  PID:4636
                  • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESDF44.tmp" "c:\Users\Admin\AppData\Local\Temp\con4ohii\CSC6EB542E7A9574AF7BAA2BEA9ABA15D7.TMP"
                    7⤵
                      PID:5000
        • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
          "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
          1⤵
            PID:3088
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
            1⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3416
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3416 CREDAT:17410 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:5084
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3416 CREDAT:82950 /prefetch:2
              2⤵
              • Suspicious use of SetWindowsHookEx
              PID:3844
          • C:\Program Files\Internet Explorer\iexplore.exe
            "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
            1⤵
            • Modifies Internet Explorer settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1364
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:17410 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4320
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:17414 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2108
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:82948 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:3816
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:17418 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:228
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:82952 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4464
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:17422 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4228
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:17424 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:2996
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:17426 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:5064
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:82960 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4972
            • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
              "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1364 CREDAT:82962 /prefetch:2
              2⤵
              • Modifies Internet Explorer settings
              • Suspicious use of SetWindowsHookEx
              PID:4912

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                103621DE9CD5414CC2538780B4B75751

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
                • Size 717B
                • SHA256 45f94dceb18a8f738a26da09ce4558995a4fe02b971882e8116fc9b59813bb72
                • MD5 SHA1 SHA512

                103621DE9CD5414CC2538780B4B75751

                • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
                • Size 192B
                • SHA256 f6746942b9218dc6963d5d12c00038e4682d0a2c5eda7c0c6f3cad2700a4761f
                • MD5 SHA1 SHA512

                powershell.exe.log

                • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                • Size 2KB
                • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
                • MD5 SHA1 SHA512

                imagestore.dat

                • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\4ecg0mv\imagestore.dat
                • Size 430B
                • SHA256 db3313fabf0a887175ab0fca5d8c4c11f3cef23e19ab1e3f479ad7e763d56126
                • MD5 SHA1 SHA512

                imagestore.dat

                • Path C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\4ecg0mv\imagestore.dat
                • Size 430B
                • SHA256 abcd06a9347139aa5e13726131a1e3bfa6043f19f1c425dbc119e5195c29a9ba
                • MD5 SHA1 SHA512

                favicon[1].ico

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8E73FL5R\favicon[1].ico
                • Size 318B
                • SHA256 66332859bd8e3441a019e073a318b62a47014ba244121301034b510dc7532271
                • MD5 SHA1 SHA512

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 64B
                • SHA256 5ffd4a816ae5d1c1a8bdc51d2872b7dd99e9c383c88001d303a6f64a77773686
                • MD5 SHA1 SHA512

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 104B
                • SHA256 a831e5959fc89f5ccab46c063ffb9f17e6d4d6c1d324810364aaa2103b99ff46
                • MD5 SHA1 SHA512

                RESDEA8.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\RESDEA8.tmp
                • Size 1KB
                • SHA256 2bdfec7c6a7fb2daa86727fc61c93f86ad3ccfaceff03ee4c5fc5c11f7eb1797
                • MD5 SHA1 SHA512

                RESDF44.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\RESDF44.tmp
                • Size 1KB
                • SHA256 ba3ac615213c90876ca99cf5eec8820cdbb7f8916983165a0aa5881a224796e1
                • MD5 SHA1 SHA512

                con4ohii.dll

                • Path C:\Users\Admin\AppData\Local\Temp\con4ohii\con4ohii.dll
                • Size 3KB
                • SHA256 b7745d3689aee844f861e9bf1795ade95a805ba57b0838ff1ee245824429a6a7
                • MD5 SHA1 SHA512

                ndjxipna.dll

                • Path C:\Users\Admin\AppData\Local\Temp\ndjxipna\ndjxipna.dll
                • Size 3KB
                • SHA256 b20a45fa6fcdbe3b567320677189622817562ab1afb3ab4570e14a6e5accd56e
                • MD5 SHA1 SHA512

                CSC6EB542E7A9574AF7BAA2BEA9ABA15D7.TMP

                • Path \??\c:\Users\Admin\AppData\Local\Temp\con4ohii\CSC6EB542E7A9574AF7BAA2BEA9ABA15D7.TMP
                • Size 652B
                • SHA256 282060c43e977d148367bd3ffe48504f8f8ceda012bab5572c0deb83b914c01a
                • MD5 SHA1 SHA512

                con4ohii.0.cs

                • Path \??\c:\Users\Admin\AppData\Local\Temp\con4ohii\con4ohii.0.cs
                • Size 416B
                • SHA256 2598df56dcfc916eb9ae7b571c67d2feb92740843e36caccf9df705c03145265
                • MD5 SHA1 SHA512

                con4ohii.cmdline

                • Path \??\c:\Users\Admin\AppData\Local\Temp\con4ohii\con4ohii.cmdline
                • Size 369B
                • SHA256 1bfed0bb1b5ca9bc0c1830d5a005369ca7fedf6748d49308a035df87adf30c67
                • MD5 SHA1 SHA512

                CSC416600887ABE4DAFBA1C71CE45A485C3.TMP

                • Path \??\c:\Users\Admin\AppData\Local\Temp\ndjxipna\CSC416600887ABE4DAFBA1C71CE45A485C3.TMP
                • Size 652B
                • SHA256 8892d75c31385c11a5e15e16c17e3a02e54714f2133bbda6b174e89aa7a90d37
                • MD5 SHA1 SHA512

                ndjxipna.0.cs

                • Path \??\c:\Users\Admin\AppData\Local\Temp\ndjxipna\ndjxipna.0.cs
                • Size 417B
                • SHA256 7fca4a3b3889149b375ce11cd1614298a244c05e3dd5fa343be56986aaa675c5
                • MD5 SHA1 SHA512

                ndjxipna.cmdline

                • Path \??\c:\Users\Admin\AppData\Local\Temp\ndjxipna\ndjxipna.cmdline
                • Size 369B
                • SHA256 c288e90ec64232ecae5edc0ed43606fa11a7556240cbc0dad5a0af62df88830f
                • MD5 SHA1 SHA512

                memory/1704-151-0x00007FF94A0A0000-0x00007FF94AB61000-memory.dmp

                memory/2684-154-0x00007FF94A0A0000-0x00007FF94AB61000-memory.dmp

                memory/2708-171-0x0000000000E00000-0x0000000000E0E000-memory.dmp

                memory/2708-125-0x0000000010000000-0x000000001000F000-memory.dmp

                memory/2708-130-0x0000000001120000-0x0000000001130000-memory.dmp

                memory/4156-148-0x000002ABD9780000-0x000002ABD9790000-memory.dmp

                memory/4156-144-0x000002ABDB130000-0x000002ABDB152000-memory.dmp

                memory/4156-145-0x00007FF94A0A0000-0x00007FF94AB61000-memory.dmp

                memory/4156-146-0x000002ABD9780000-0x000002ABD9790000-memory.dmp

                memory/4156-169-0x000002ABF5890000-0x000002ABF58A3000-memory.dmp

                memory/4156-147-0x000002ABD9780000-0x000002ABD9790000-memory.dmp