Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/07/2024, 12:24

General

  • Target
    305cd06c536c9df79b687c1898d3709d_JaffaCakes118.exe
  • Size 130KB
  • Sample240709-pk183swajc
  • SHA256 35866cc2ea5937dbe0c4df8fbd429633043ba26b3d80199cd628f0f8a491286a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Grants admin privileges 1 TTPs

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

  • Blocklisted process makes network request 4 IoCs
  • Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • Discovers systems in the same network 1 TTPs 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Gathers network information 2 TTPs 3 IoCs

    Uses commandline utility to view network configuration.

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\305cd06c536c9df79b687c1898d3709d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\305cd06c536c9df79b687c1898d3709d_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2540
    • C:\ProgramData\Application Data\wmimgmt.exe
      "C:\ProgramData\Application Data\wmimgmt.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3856
      • C:\Users\Admin\AppData\Local\Temp\avp.exe
        C:\Users\Admin\AppData\Local\Temp\avp.exe
        3⤵
        • Server Software Component: Terminal Services DLL
        • Executes dropped EXE
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:884
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c del "C:\Users\Admin\AppData\Local\Temp\avp.exe" /A /F /Q> nul
          4⤵
            PID:1580
          • C:\Windows\SysWOW64\NotePAD.exe
            NotePAD.exe "C:\Users\Admin\AppData\Local\Temp\VMvareDnd.log"
            4⤵
            • Opens file in notepad (likely ransom note)
            PID:3628
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32.exe "C:\Windows\system32\EventSystem.dll",TStartUp 0x11
            4⤵
            • Blocklisted process makes network request
            • Loads dropped DLL
            PID:776
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c del "C:\Users\Admin\AppData\Local\Temp\avp.exe" /A /F /Q> nul
            4⤵
              PID:3368
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /v:on /c C:\Users\Admin\AppData\Local\Temp\ghi.bat
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1928
            • C:\Windows\SysWOW64\findstr.exe
              findstr /s "YM.CGP_" "C:\Users\Admin"\..\*.txt
              4⤵
                PID:3876
              • C:\Windows\SysWOW64\chcp.com
                chcp
                4⤵
                  PID:3384
                • C:\Windows\SysWOW64\net.exe
                  net user
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1460
                  • C:\Windows\SysWOW64\net1.exe
                    C:\Windows\system32\net1 user
                    5⤵
                      PID:1012
                  • C:\Windows\SysWOW64\net.exe
                    net localgroup administrators
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3968
                    • C:\Windows\SysWOW64\net1.exe
                      C:\Windows\system32\net1 localgroup administrators
                      5⤵
                        PID:3696
                    • C:\Windows\SysWOW64\tasklist.exe
                      tasklist
                      4⤵
                      • Enumerates processes with tasklist
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2124
                    • C:\Windows\SysWOW64\systeminfo.exe
                      systeminfo
                      4⤵
                      • Gathers system information
                      PID:2676
                    • C:\Windows\SysWOW64\reg.exe
                      reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer"
                      4⤵
                        PID:4324
                      • C:\Windows\SysWOW64\find.exe
                        find "REG_"
                        4⤵
                          PID:3588
                        • C:\Windows\SysWOW64\reg.exe
                          reg query HKEY_CURRENT_USER\Software\Microsoft\Office
                          4⤵
                            PID:2824
                          • C:\Windows\SysWOW64\reg.exe
                            reg query HKEY_CURRENT_USER\Software\Microsoft\Office\8.0\Common\UserInfo
                            4⤵
                              PID:532
                            • C:\Windows\SysWOW64\reg.exe
                              reg query HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Common\UserInfo
                              4⤵
                                PID:3808
                              • C:\Windows\SysWOW64\reg.exe
                                reg query HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Common\UserInfo
                                4⤵
                                  PID:1492
                                • C:\Windows\SysWOW64\reg.exe
                                  reg query HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Common\UserInfo
                                  4⤵
                                    PID:3676
                                  • C:\Windows\SysWOW64\reg.exe
                                    reg query HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common\UserInfo
                                    4⤵
                                      PID:4936
                                    • C:\Windows\SysWOW64\reg.exe
                                      reg query HKEY_CURRENT_USER\Software\Microsoft\Office\13.0\Common\UserInfo
                                      4⤵
                                        PID:3128
                                      • C:\Windows\SysWOW64\ipconfig.exe
                                        ipconfig /all
                                        4⤵
                                        • Gathers network information
                                        PID:4136
                                      • C:\Windows\SysWOW64\NETSTAT.EXE
                                        netstat -ano
                                        4⤵
                                        • Gathers network information
                                        • Suspicious use of AdjustPrivilegeToken
                                        PID:984
                                      • C:\Windows\SysWOW64\ARP.EXE
                                        arp -a
                                        4⤵
                                          PID:2532
                                        • C:\Windows\SysWOW64\NETSTAT.EXE
                                          netstat -r
                                          4⤵
                                          • Gathers network information
                                          PID:2756
                                          • C:\Windows\SysWOW64\cmd.exe
                                            C:\Windows\system32\cmd.exe /c "C:\Windows\system32\route.exe" print
                                            5⤵
                                              PID:3112
                                              • C:\Windows\SysWOW64\ROUTE.EXE
                                                C:\Windows\system32\route.exe print
                                                6⤵
                                                  PID:680
                                            • C:\Windows\SysWOW64\net.exe
                                              net start
                                              4⤵
                                                PID:4532
                                                • C:\Windows\SysWOW64\net1.exe
                                                  C:\Windows\system32\net1 start
                                                  5⤵
                                                    PID:844
                                                • C:\Windows\SysWOW64\net.exe
                                                  net use
                                                  4⤵
                                                    PID:3956
                                                  • C:\Windows\SysWOW64\cmd.exe
                                                    C:\Windows\system32\cmd.exe /S /D /c" echo n"
                                                    4⤵
                                                      PID:3996
                                                    • C:\Windows\SysWOW64\net.exe
                                                      net share
                                                      4⤵
                                                        PID:4396
                                                        • C:\Windows\SysWOW64\net1.exe
                                                          C:\Windows\system32\net1 share
                                                          5⤵
                                                            PID:2528
                                                        • C:\Windows\SysWOW64\net.exe
                                                          net view /domain
                                                          4⤵
                                                          • Discovers systems in the same network
                                                          PID:3376
                                                        • C:\Windows\SysWOW64\cmd.exe
                                                          C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\s.log "
                                                          4⤵
                                                            PID:1040
                                                          • C:\Windows\SysWOW64\find.exe
                                                            find /i /v "------"
                                                            4⤵
                                                              PID:4404
                                                            • C:\Windows\SysWOW64\cmd.exe
                                                              C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\t.log "
                                                              4⤵
                                                                PID:2144
                                                              • C:\Windows\SysWOW64\find.exe
                                                                find /i /v "domain"
                                                                4⤵
                                                                  PID:3356
                                                                • C:\Windows\SysWOW64\cmd.exe
                                                                  C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\s.log "
                                                                  4⤵
                                                                    PID:2464
                                                                  • C:\Windows\SysWOW64\find.exe
                                                                    find /i /v "¬A╛╣"
                                                                    4⤵
                                                                      PID:4788
                                                                    • C:\Windows\SysWOW64\cmd.exe
                                                                      C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\t.log "
                                                                      4⤵
                                                                        PID:1576
                                                                      • C:\Windows\SysWOW64\find.exe
                                                                        find /i /v "░⌡ªµª¿"
                                                                        4⤵
                                                                          PID:1224
                                                                        • C:\Windows\SysWOW64\cmd.exe
                                                                          C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\s.log "
                                                                          4⤵
                                                                            PID:4776
                                                                          • C:\Windows\SysWOW64\find.exe
                                                                            find /i /v "├ⁿ┴ε"
                                                                            4⤵
                                                                              PID:3804
                                                                            • C:\Windows\SysWOW64\cmd.exe
                                                                              C:\Windows\system32\cmd.exe /S /D /c" type C:\Users\Admin\AppData\Local\Temp\t.log "
                                                                              4⤵
                                                                                PID:4900
                                                                              • C:\Windows\SysWOW64\find.exe
                                                                                find /i /v "completed successfully"
                                                                                4⤵
                                                                                  PID:1764

                                                                          Network

                                                                                MITRE ATT&CK Enterprise v15

                                                                                Replay Monitor

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                                                                                Downloads

                                                                                wmimgmt.exe

                                                                                • Path C:\ProgramData\Application Data\wmimgmt.exe
                                                                                • Size 130KB
                                                                                • SHA256 35866cc2ea5937dbe0c4df8fbd429633043ba26b3d80199cd628f0f8a491286a
                                                                                • MD5 SHA1 SHA512 SSDEEP

                                                                                AC#CCD.tmp

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\AC#CCD.tmp
                                                                                • Size 181B
                                                                                • SHA256 9247284bea9b243dc72f07ca15ef100c03683c4066dc3b8d05898083b9cafa4f
                                                                                • MD5 SHA1 SHA512

                                                                                AC#D6B.tmp

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\AC#D6B.tmp
                                                                                • Size 311B
                                                                                • SHA256 3332f998c77bcb7959e0133d36f2ee4308deb63ba8f66cecd40a1ca156518e58
                                                                                • MD5 SHA1 SHA512

                                                                                AC#FBE4.tmp

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\AC#FBE4.tmp
                                                                                • Size 55B
                                                                                • SHA256 34415dee19e7fff291cf2b0cc7c355447436711ee24b0005e2392cac1758d53a
                                                                                • MD5 SHA1 SHA512

                                                                                INFO.TXT

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\INFO.TXT
                                                                                • Size 43B
                                                                                • SHA256 59338bc52dfc5e190a1c57dea588819e01871d13b8f1df5f991dcf098039eb1d
                                                                                • MD5 SHA1 SHA512

                                                                                INFO.TXT

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\INFO.TXT
                                                                                • Size 11KB
                                                                                • SHA256 e5ad505a270615a1afc154412a70ef31235a3d98b32900ee3bf2a009fffe1d65
                                                                                • MD5 SHA1 SHA512 SSDEEP

                                                                                INFO.TXT

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\INFO.TXT
                                                                                • Size 21KB
                                                                                • SHA256 c34a3e26a0cfa8d5ba1ab6af09079dbcee1fbcb2d59484682181df4a9973e1e4
                                                                                • MD5 SHA1 SHA512 SSDEEP

                                                                                INFO.TXT

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\INFO.TXT
                                                                                • Size 37.5MB
                                                                                • SHA256 7f811ff455141adbf32519e0b5ad51758787c9e11806f60f4260a73d8fd90cd2
                                                                                • MD5 SHA1 SHA512 SSDEEP

                                                                                avp.exe

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\avp.exe
                                                                                • Size 72KB
                                                                                • SHA256 e766d53429ae9a4898f2f74edcce2b7c9e34bbf4aed7091f591c246eaf0af844
                                                                                • MD5 SHA1 SHA512 SSDEEP

                                                                                drivers.p

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\drivers.p
                                                                                • Size 15B
                                                                                • SHA256 6b8ceb900443f4924efd3187693038965ad7edb488879305489aa72d78f69626
                                                                                • MD5 SHA1 SHA512

                                                                                ghi.bat

                                                                                • Path C:\Users\Admin\AppData\Local\Temp\ghi.bat
                                                                                • Size 3KB
                                                                                • SHA256 e369c7e2e7ac0280882693038b213be0309c910df62f35a5159a125ecd18fb9a
                                                                                • MD5 SHA1 SHA512

                                                                                line.dat

                                                                                • Path C:\Users\Public\Documents\Media\line.dat
                                                                                • Size 422B
                                                                                • SHA256 efddfed267d2779599ea40d4afe6e6d1ab0d8693a3a28d114797e7d3e8dced52
                                                                                • MD5 SHA1 SHA512

                                                                                EventSystem.dll

                                                                                • Path C:\Windows\SysWOW64\EventSystem.dll
                                                                                • Size 60KB
                                                                                • SHA256 c5344560b0add73121b5d082f972781408e029a24924ca8d4afbb02e7a5e4119
                                                                                • MD5 SHA1 SHA512 SSDEEP

                                                                                memory/2540-0-0x0000000000400000-0x0000000000435000-memory.dmp

                                                                                memory/2540-8-0x0000000000400000-0x0000000000435000-memory.dmp

                                                                                memory/3856-64-0x0000000000400000-0x0000000000435000-memory.dmp

                                                                                memory/3856-7-0x0000000000400000-0x0000000000435000-memory.dmp