Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-03-2024 21:36

General

  • Target

    44d42138d67d0e52c3c26cb726bc8f39_JaffaCakes118.exe

  • Size

    4.2MB

  • MD5

    44d42138d67d0e52c3c26cb726bc8f39

  • SHA1

    2613e0e464b334ed66e34a8cffc174c5603dd1d9

  • SHA256

    074d3a0bcfb3d4b0b179a2495004fb95947de60ce002fded7af1d1781add9d2b

  • SHA512

    9d59b4dfb96bbe5b59f1b5c0561dafd8fe3f2fb1ababf4e7a384577ddf63adb703802187e7a7bfd671c4fd67e84214bb2b3283edae85e0f2a424148d9e0be1fa

  • SSDEEP

    98304:5RDQNYpuboTrhHZw1LhIArXs7YL8WVM872qAR:5RePbo3tZw17s7YQWg

Malware Config

Signatures

  • ServHelper

    ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.

  • Grants admin privileges 1 TTPs

    Uses net.exe to modify the user's privileges.

  • Modifies RDP port number used by Windows 1 TTPs
  • Possible privilege escalation attempt 8 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Modifies file permissions 1 TTPs 8 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 8 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\44d42138d67d0e52c3c26cb726bc8f39_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\44d42138d67d0e52c3c26cb726bc8f39_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4652
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
      2⤵
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:380
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\xqyi0fib\xqyi0fib.cmdline"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1700
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES739A.tmp" "c:\Users\Admin\AppData\Local\Temp\xqyi0fib\CSC455D4C1CA22743DA8EE357F64CF89BF9.TMP"
          4⤵
            PID:2516
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2176
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2696
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2968
        • C:\Windows\SysWOW64\takeown.exe
          "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:1016
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:4784
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /setowner "NT SERVICE\TrustedInstaller"
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          • Suspicious use of AdjustPrivilegeToken
          PID:4836
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT SERVICE\TrustedInstaller:F"
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:3692
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove "NT AUTHORITY\SYSTEM"
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:512
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant "NT AUTHORITY\SYSTEM:RX"
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:448
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:1068
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /grant BUILTIN\Administrators:RX
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:4948
        • C:\Windows\SysWOW64\reg.exe
          "C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
          3⤵
            PID:1004
          • C:\Windows\SysWOW64\reg.exe
            "C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
            3⤵
            • Sets DLL path for service in the registry
            • Modifies registry key
            PID:5116
          • C:\Windows\SysWOW64\reg.exe
            "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
            3⤵
              PID:1700
            • C:\Windows\SysWOW64\net.exe
              "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:2056
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                4⤵
                  PID:2664
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:4016
                • C:\Windows\SysWOW64\cmd.exe
                  cmd /c net start rdpdr
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1652
                  • C:\Windows\SysWOW64\net.exe
                    net start rdpdr
                    5⤵
                      PID:3368
                      • C:\Windows\SysWOW64\net1.exe
                        C:\Windows\system32\net1 start rdpdr
                        6⤵
                          PID:3696
                  • C:\Windows\SysWOW64\cmd.exe
                    "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
                    3⤵
                      PID:4956
                      • C:\Windows\SysWOW64\cmd.exe
                        cmd /c net start TermService
                        4⤵
                          PID:4476
                          • C:\Windows\SysWOW64\net.exe
                            net start TermService
                            5⤵
                              PID:4560
                              • C:\Windows\SysWOW64\net1.exe
                                C:\Windows\system32\net1 start TermService
                                6⤵
                                  PID:744
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
                            3⤵
                              PID:4480
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
                              3⤵
                                PID:2100

                          Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • C:\Users\Admin\AppData\Local\Temp\RES739A.tmp

                            Filesize

                            1KB

                            MD5

                            bc05d33040ce82452fb6edeaa1766d7d

                            SHA1

                            d3b3f5179ba50161513be4f88d0aa9cf2da15caa

                            SHA256

                            a652b212da4d5d0d719871475d35638515d08732ac059153556f6443a071078f

                            SHA512

                            3343ef13c176549ee95e306c33eb04aeeb9acbf90977a4c33cfd07754975d657fb226a54c653504c3c44b162ef3efe4d315c647e37a86cbe6142743b0a381094

                          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_12titmil.nto.ps1

                            Filesize

                            60B

                            MD5

                            d17fe0a3f47be24a6453e9ef58c94641

                            SHA1

                            6ab83620379fc69f80c0242105ddffd7d98d5d9d

                            SHA256

                            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                            SHA512

                            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

                          • C:\Users\Admin\AppData\Local\Temp\get-dnsprovider.PS1

                            Filesize

                            2.5MB

                            MD5

                            794bf0ae26a7efb0c516cf4a7692c501

                            SHA1

                            c8f81d0ddd4d360dcbe0814a04a86748f99c6ff2

                            SHA256

                            97753653d52aaa961e4d1364b5b43551c76da9bb19e12f741bd67c986259e825

                            SHA512

                            20c97972a1256375157f82a859ce4936613fe109d54c63bbec25734edc3a567ca976b342a21ef5f25571b3c1959afe618ad9f9f17a817cfd731d1504541b1a75

                          • C:\Users\Admin\AppData\Local\Temp\ready.ps1

                            Filesize

                            1KB

                            MD5

                            28d9755addec05c0b24cca50dfe3a92b

                            SHA1

                            7d3156f11c7a7fb60d29809caf93101de2681aa3

                            SHA256

                            abb6ceb444b3dc29fcdcb8bda4935a6a792b85bb7049cb2710d97415d9411af9

                            SHA512

                            891a72eeef42be3f04067225a9665020704c99f9c17473ca57e5b946dfa35cb469fa91a794ea30115ce3ed0e940edb3ccff69a16a888379f5ac46a12afaa4c42

                          • C:\Users\Admin\AppData\Local\Temp\xqyi0fib\xqyi0fib.dll

                            Filesize

                            3KB

                            MD5

                            933b1cefbd8ab2decc405584c6bb30a5

                            SHA1

                            b6e267b334a1129b01a0ef1be5f780f3c87b5bd3

                            SHA256

                            40f7c726c920edb3273860f70b59987df45ca7f6a9e4261567606d13cf1459b3

                            SHA512

                            bb1acaaa89f551b8248b19980f4abfa10f7c0f39ad2428db37bf04c1265e018423f61c31ae4ec7de333ce27ff4681388177779762d3b23f63abfd58362c34f70

                          • C:\Windows\SysWOW64\rfxvmt.dll

                            Filesize

                            40KB

                            MD5

                            dc39d23e4c0e681fad7a3e1342a2843c

                            SHA1

                            58fd7d50c2dca464a128f5e0435d6f0515e62073

                            SHA256

                            6d9a41a03a3bd5362e3af24f97ba99d2f9927d1375e4f608942a712866d133b9

                            SHA512

                            5cb75e04ce9f5c3714e30c4fd5b8dbcd3952c3d756556dd76206111fe5b4e980c6c50209ab0914ab3afe15bd9c33ff0d49463ca11547214122859918de2a58f7

                          • \??\c:\Users\Admin\AppData\Local\Temp\xqyi0fib\CSC455D4C1CA22743DA8EE357F64CF89BF9.TMP

                            Filesize

                            652B

                            MD5

                            1933719d0afc3c20b9ee34efa4933e30

                            SHA1

                            a6552451ab820d9d1e32ea70377e215c7fb0be57

                            SHA256

                            e158ac1e3a7d5a72c8c287cb4153e6b371de8e53c8682fc1fd0e140ea93e4f0c

                            SHA512

                            ee0820f29abd1ad965b37560745b2f2c8b0819bdbcd5afc688554ae807b826084557b2fc744f2a9e3be6c81911c40ded1f45700e096ea91b080e0973cdc5997b

                          • \??\c:\Users\Admin\AppData\Local\Temp\xqyi0fib\xqyi0fib.0.cs

                            Filesize

                            424B

                            MD5

                            9f8ab7eb0ab21443a2fe06dab341510e

                            SHA1

                            2b88b3116a79e48bab7114e18c9b9674e8a52165

                            SHA256

                            e1a4fbe36125e02e100e729ce92ab74869423da87cb46da6e3c50d7c4410b2d9

                            SHA512

                            53f5dc4c853af5a412fde895635ef4b2de98a165e3546130fdd17a37a5c3b177e21eccf70a5ddf936ac491da2d7e8fcdbc1e564a95ec01b097841aa78869989b

                          • \??\c:\Users\Admin\AppData\Local\Temp\xqyi0fib\xqyi0fib.cmdline

                            Filesize

                            369B

                            MD5

                            c30becf68973b117ec216a7eb811bf4d

                            SHA1

                            163d5a10730d119e3e9ad05a678977c6a0337707

                            SHA256

                            552815da09c61aa33452100f558d0c1a58cde0fbd7eced94375e04badb2db5ac

                            SHA512

                            40ca7100ba0e43a7e8ae1cc8cc8c5389d0d7d2423fee669b46f4e06a9071b345a01ab3024f100c707a04bc810fc5c05ac0151b00f567b56b6ea145905bf6d630

                          • memory/380-20-0x0000000004F40000-0x0000000004F50000-memory.dmp

                            Filesize

                            64KB

                          • memory/380-16-0x0000000004E50000-0x0000000004E86000-memory.dmp

                            Filesize

                            216KB

                          • memory/380-51-0x00000000069B0000-0x00000000069B8000-memory.dmp

                            Filesize

                            32KB

                          • memory/380-37-0x0000000007A90000-0x000000000810A000-memory.dmp

                            Filesize

                            6.5MB

                          • memory/380-21-0x0000000005580000-0x0000000005BA8000-memory.dmp

                            Filesize

                            6.2MB

                          • memory/380-17-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/380-38-0x0000000006940000-0x000000000695A000-memory.dmp

                            Filesize

                            104KB

                          • memory/380-22-0x0000000005360000-0x0000000005382000-memory.dmp

                            Filesize

                            136KB

                          • memory/380-119-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/380-56-0x00000000074E0000-0x000000000750C000-memory.dmp

                            Filesize

                            176KB

                          • memory/380-18-0x0000000004F40000-0x0000000004F50000-memory.dmp

                            Filesize

                            64KB

                          • memory/380-23-0x0000000005500000-0x0000000005566000-memory.dmp

                            Filesize

                            408KB

                          • memory/380-122-0x0000000004F40000-0x0000000004F50000-memory.dmp

                            Filesize

                            64KB

                          • memory/380-29-0x0000000005E50000-0x00000000061A4000-memory.dmp

                            Filesize

                            3.3MB

                          • memory/380-34-0x0000000006420000-0x000000000643E000-memory.dmp

                            Filesize

                            120KB

                          • memory/380-35-0x00000000064B0000-0x00000000064FC000-memory.dmp

                            Filesize

                            304KB

                          • memory/380-135-0x0000000004F40000-0x0000000004F50000-memory.dmp

                            Filesize

                            64KB

                          • memory/2176-57-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/2176-81-0x0000000006540000-0x000000000655E000-memory.dmp

                            Filesize

                            120KB

                          • memory/2176-93-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/2176-92-0x0000000006B10000-0x0000000006B18000-memory.dmp

                            Filesize

                            32KB

                          • memory/2176-91-0x0000000006B20000-0x0000000006B3A000-memory.dmp

                            Filesize

                            104KB

                          • memory/2176-90-0x0000000006AE0000-0x0000000006AF4000-memory.dmp

                            Filesize

                            80KB

                          • memory/2176-89-0x0000000006AD0000-0x0000000006ADE000-memory.dmp

                            Filesize

                            56KB

                          • memory/2176-88-0x0000000006AA0000-0x0000000006AB1000-memory.dmp

                            Filesize

                            68KB

                          • memory/2176-87-0x0000000006B40000-0x0000000006BD6000-memory.dmp

                            Filesize

                            600KB

                          • memory/2176-86-0x0000000006930000-0x000000000693A000-memory.dmp

                            Filesize

                            40KB

                          • memory/2176-85-0x0000000006560000-0x0000000006603000-memory.dmp

                            Filesize

                            652KB

                          • memory/2176-84-0x0000000002870000-0x0000000002880000-memory.dmp

                            Filesize

                            64KB

                          • memory/2176-83-0x0000000002870000-0x0000000002880000-memory.dmp

                            Filesize

                            64KB

                          • memory/2176-68-0x000000007F290000-0x000000007F2A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/2176-70-0x00000000702C0000-0x000000007030C000-memory.dmp

                            Filesize

                            304KB

                          • memory/2176-69-0x0000000006500000-0x0000000006532000-memory.dmp

                            Filesize

                            200KB

                          • memory/2176-71-0x0000000070910000-0x0000000070C64000-memory.dmp

                            Filesize

                            3.3MB

                          • memory/2696-108-0x000000007F340000-0x000000007F350000-memory.dmp

                            Filesize

                            64KB

                          • memory/2696-95-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/2696-120-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/2696-109-0x0000000070910000-0x0000000070C64000-memory.dmp

                            Filesize

                            3.3MB

                          • memory/2696-107-0x00000000702C0000-0x000000007030C000-memory.dmp

                            Filesize

                            304KB

                          • memory/2696-96-0x0000000004A70000-0x0000000004A80000-memory.dmp

                            Filesize

                            64KB

                          • memory/2968-137-0x0000000070910000-0x0000000070C64000-memory.dmp

                            Filesize

                            3.3MB

                          • memory/2968-136-0x00000000702C0000-0x000000007030C000-memory.dmp

                            Filesize

                            304KB

                          • memory/2968-134-0x0000000003020000-0x0000000003030000-memory.dmp

                            Filesize

                            64KB

                          • memory/2968-133-0x0000000003020000-0x0000000003030000-memory.dmp

                            Filesize

                            64KB

                          • memory/2968-123-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/4652-9-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-6-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-94-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-12-0x00000000066F0000-0x00000000066FA000-memory.dmp

                            Filesize

                            40KB

                          • memory/4652-11-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-10-0x00000000064E0000-0x0000000006572000-memory.dmp

                            Filesize

                            584KB

                          • memory/4652-19-0x0000000000BA0000-0x0000000000FAD000-memory.dmp

                            Filesize

                            4.1MB

                          • memory/4652-82-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-106-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-13-0x0000000006A30000-0x0000000006A96000-memory.dmp

                            Filesize

                            408KB

                          • memory/4652-8-0x0000000005DF0000-0x0000000006394000-memory.dmp

                            Filesize

                            5.6MB

                          • memory/4652-4-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/4652-7-0x0000000003090000-0x00000000030A0000-memory.dmp

                            Filesize

                            64KB

                          • memory/4652-55-0x0000000000FB0000-0x00000000013B2000-memory.dmp

                            Filesize

                            4.0MB

                          • memory/4652-5-0x00000000059F0000-0x0000000005DF4000-memory.dmp

                            Filesize

                            4.0MB

                          • memory/4652-1-0x0000000000BA0000-0x0000000000FAD000-memory.dmp

                            Filesize

                            4.1MB

                          • memory/4652-3-0x0000000000400000-0x0000000000841000-memory.dmp

                            Filesize

                            4.3MB

                          • memory/4652-67-0x0000000074D30000-0x00000000754E0000-memory.dmp

                            Filesize

                            7.7MB

                          • memory/4652-2-0x0000000000FB0000-0x00000000013B2000-memory.dmp

                            Filesize

                            4.0MB