Analysis

  • max time kernel
    109s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25/11/2022, 03:27

General

  • Target

    1813cdbea071efd7e0b261e0b1f47635.exe

  • Size

    7.6MB

  • MD5

    1813cdbea071efd7e0b261e0b1f47635

  • SHA1

    cb7bfedfa84c2de310fdf36b6fac39c6d8a6c971

  • SHA256

    43834f452190b6f36ce8bb603b76e44feb45761eb70eae5dee2ac8db17d560ee

  • SHA512

    a5ac24cff7a276acc8d629dcb170c51ee8c1d65960f0fbf105a775264a63264bfb126008e5ea4daba812ef1d79881bda3e077bb1349166d474a609dd06e65b77

  • SSDEEP

    196608:4AId0+vNSQpice0XxZcTjfKYQGj8jFDO/3V1hoGv:4zm+v9eeQjCBnjNO/FTXv

Malware Config

Signatures

  • FlawedAmmyy RAT

    Remote-access trojan based on leaked code for the Ammyy remote admin software.

  • Grants admin privileges 1 TTPs

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

  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 7 IoCs
  • Stops running service(s) 3 TTPs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 5 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Program Files directory 25 IoCs
  • Launches sc.exe 6 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Kills process with taskkill 3 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • NTFS ADS 3 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1813cdbea071efd7e0b261e0b1f47635.exe
    "C:\Users\Admin\AppData\Local\Temp\1813cdbea071efd7e0b261e0b1f47635.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Users\Admin\AppData\Local\Temp\is-6SLD0.tmp\1813cdbea071efd7e0b261e0b1f47635.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-6SLD0.tmp\1813cdbea071efd7e0b261e0b1f47635.tmp" /SL5="$90120,7763926,67584,C:\Users\Admin\AppData\Local\Temp\1813cdbea071efd7e0b261e0b1f47635.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:672
      • C:\Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe
        "C:\Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe" -STIconfig
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Modifies system certificate store
        • NTFS ADS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1788
        • C:\Windows\SysWOW64\SC.exe
          SC stop "AmmyyAdmin"
          4⤵
          • Launches sc.exe
          PID:1012
        • C:\Windows\SysWOW64\SCHTASKS.exe
          SCHTASKS /End /TN ZeusTecSTI
          4⤵
            PID:1040
          • C:\Windows\SysWOW64\SCHTASKS.exe
            SCHTASKS /End /TN ZeusTecSTI
            4⤵
              PID:1180
            • C:\Windows\SysWOW64\SCHTASKS.exe
              SCHTASKS /End /TN ZeusTecnologia\ZeusTecSTI
              4⤵
                PID:1560
              • C:\Windows\SysWOW64\SCHTASKS.exe
                SCHTASKS /End /TN ZeusTecnologia\ZeusTecINV
                4⤵
                  PID:1240
                • C:\Windows\SysWOW64\SCHTASKS.exe
                  SCHTASKS /delete /F /TN "Zeus Tecnologia STI"
                  4⤵
                    PID:780
                  • C:\Windows\SysWOW64\SCHTASKS.exe
                    SCHTASKS /delete /F /TN ZeusTecSTI
                    4⤵
                      PID:1124
                    • C:\Windows\SysWOW64\SCHTASKS.exe
                      SCHTASKS /delete /F /TN ZeusTecnologia\ZeusTecINV
                      4⤵
                        PID:1800
                      • C:\Windows\SysWOW64\SCHTASKS.exe
                        SCHTASKS /delete /F /TN ZeusTecnologia\ZeusTecSTI
                        4⤵
                          PID:1680
                        • C:\Windows\SysWOW64\NETSH.exe
                          NETSH advfirewall firewall delete rule name="ZeusAtualiza"
                          4⤵
                          • Modifies Windows Firewall
                          PID:1852
                        • C:\Windows\SysWOW64\NETSH.exe
                          NETSH advfirewall firewall delete rule name="ZeusAmmyyAdm"
                          4⤵
                          • Modifies Windows Firewall
                          PID:1604
                        • C:\Windows\SysWOW64\taskkill.exe
                          taskkill -f -im AmmyyAdmin.exe
                          4⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:528
                        • C:\Windows\SysWOW64\taskkill.exe
                          taskkill -f -im AtualizadorZeus.exe
                          4⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1180
                        • C:\Windows\SysWOW64\taskkill.exe
                          taskkill -f -im gerenciadorZeus.exe
                          4⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1944
                        • C:\Windows\SysWOW64\SC.exe
                          SC delete "AmmyyAdmin"
                          4⤵
                          • Launches sc.exe
                          PID:1096
                        • C:\Windows\SysWOW64\NET.exe
                          NET USER "zeustec" /ADD
                          4⤵
                            PID:468
                            • C:\Windows\SysWOW64\net1.exe
                              C:\Windows\system32\net1 USER "zeustec" /ADD
                              5⤵
                                PID:1856
                            • C:\Windows\SysWOW64\NET.exe
                              NET USER "zeustec" "Zeus!2125"
                              4⤵
                                PID:1800
                                • C:\Windows\SysWOW64\net1.exe
                                  C:\Windows\system32\net1 USER "zeustec" "Zeus!2125"
                                  5⤵
                                    PID:996
                                • C:\Windows\SysWOW64\Wbem\WMIC.exe
                                  WMIC USERACCOUNT WHERE "Name='zeustec' and Domain='ORXGKKZC'" SET PasswordExpires=FALSE
                                  4⤵
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:1780
                                • C:\Windows\SysWOW64\net.exe
                                  net users zeustec /fullname:"ZeusTecnologia"
                                  4⤵
                                    PID:980
                                    • C:\Windows\SysWOW64\net1.exe
                                      C:\Windows\system32\net1 users zeustec /fullname:"ZeusTecnologia"
                                      5⤵
                                        PID:1984
                                    • C:\Windows\SysWOW64\NET.exe
                                      NET LOCALGROUP "Administrators" "zeustec" /ADD
                                      4⤵
                                        PID:1184
                                        • C:\Windows\SysWOW64\net1.exe
                                          C:\Windows\system32\net1 LOCALGROUP "Administrators" "zeustec" /ADD
                                          5⤵
                                            PID:804
                                        • C:\Windows\SysWOW64\NET.exe
                                          NET LOCALGROUP "Remote Desktop Users" "zeustec" /ADD
                                          4⤵
                                            PID:1084
                                            • C:\Windows\SysWOW64\net1.exe
                                              C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" "zeustec" /ADD
                                              5⤵
                                                PID:336
                                            • C:\Windows\SysWOW64\Wbem\wmic.exe
                                              wmic useraccount where name="admin" call rename "ZTadmin"
                                              4⤵
                                              • Suspicious use of AdjustPrivilegeToken
                                              PID:844
                                            • C:\Windows\SysWOW64\NET.exe
                                              NET USER "ztadmin" /ADD
                                              4⤵
                                                PID:1928
                                                • C:\Windows\SysWOW64\net1.exe
                                                  C:\Windows\system32\net1 USER "ztadmin" /ADD
                                                  5⤵
                                                    PID:1268
                                                • C:\Windows\SysWOW64\NET.exe
                                                  NET USER "ztadmin" "Cliente@3456"
                                                  4⤵
                                                    PID:1608
                                                    • C:\Windows\SysWOW64\net1.exe
                                                      C:\Windows\system32\net1 USER "ztadmin" "Cliente@3456"
                                                      5⤵
                                                        PID:2008
                                                    • C:\Windows\SysWOW64\Wbem\WMIC.exe
                                                      WMIC USERACCOUNT WHERE "Name='ztadmin' and Domain='ORXGKKZC'" SET PasswordExpires=FALSE
                                                      4⤵
                                                        PID:752
                                                      • C:\Windows\SysWOW64\net.exe
                                                        net users ztadmin /fullname:"ZTAdmin"
                                                        4⤵
                                                          PID:1800
                                                          • C:\Windows\SysWOW64\net1.exe
                                                            C:\Windows\system32\net1 users ztadmin /fullname:"ZTAdmin"
                                                            5⤵
                                                              PID:820
                                                          • C:\Windows\SysWOW64\NET.exe
                                                            NET LOCALGROUP "Administrators" "ztadmin" /ADD
                                                            4⤵
                                                              PID:1520
                                                              • C:\Windows\SysWOW64\net1.exe
                                                                C:\Windows\system32\net1 LOCALGROUP "Administrators" "ztadmin" /ADD
                                                                5⤵
                                                                  PID:1592
                                                              • C:\Windows\SysWOW64\cacls.exe
                                                                cacls "C:\Program Files (x86)\Zeus Tecnologia STI\DOWNLOADS" /T /E /C /P Users:F
                                                                4⤵
                                                                  PID:980
                                                                • C:\Windows\SysWOW64\powercfg.exe
                                                                  powercfg -x -monitor-timeout-ac 15
                                                                  4⤵
                                                                    PID:2040
                                                                  • C:\Windows\SysWOW64\powercfg.exe
                                                                    powercfg -x -standby-timeout-ac 0
                                                                    4⤵
                                                                      PID:528
                                                                    • C:\Windows\SysWOW64\SCHTASKS.exe
                                                                      SCHTASKS /ru system /create /sc daily /st 12:30 /RI 10 /DU 00:18 /K /tn ZeusTecnologia\ZeusTecSTI /tr "'C:\Program Files (x86)\Zeus Tecnologia STI\atualizadorZeus.exe' -STI" /f /RL HIGHEST
                                                                      4⤵
                                                                      • Creates scheduled task(s)
                                                                      PID:1544
                                                                    • C:\Windows\SysWOW64\SCHTASKS.exe
                                                                      SCHTASKS /ru system /create /sc daily /st 12:50 /tn ZeusTecnologia\ZeusTecINV /tr "'C:\Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe' -INV" /f /RL HIGHEST
                                                                      4⤵
                                                                      • Creates scheduled task(s)
                                                                      PID:1628
                                                                    • C:\Windows\SysWOW64\NETSH.exe
                                                                      NETSH advfirewall firewall add rule name="ZeusAtualiza" dir=IN action=ALLOW program="C:\Program Files (x86)\Zeus Tecnologia STI\atualizadorZeus.exe" enable=YES profile=ANY description="Atualizador - Zeus Tecnologia"
                                                                      4⤵
                                                                      • Modifies Windows Firewall
                                                                      PID:1268
                                                                    • C:\Windows\SysWOW64\NETSH.exe
                                                                      NETSH advfirewall firewall add rule name="ZeusAmmyyAdm" dir=IN action=ALLOW program="C:\Program Files (x86)\Zeus Tecnologia STI\AmmyyAdmin.exe" enable=YES profile=ANY description="Ammyy Admin - Zeus Tecnologia"
                                                                      4⤵
                                                                      • Modifies Windows Firewall
                                                                      PID:1820
                                                                    • C:\Windows\SysWOW64\NETSH.exe
                                                                      NETSH advfirewall firewall set rule GROUP="Descoberta de Rede" NEW enable=YES
                                                                      4⤵
                                                                      • Modifies Windows Firewall
                                                                      PID:1744
                                                                    • C:\Windows\SysWOW64\NETSH.exe
                                                                      NETSH advfirewall firewall set rule GROUP="Network Discovery" NEW enable=YES
                                                                      4⤵
                                                                      • Modifies Windows Firewall
                                                                      PID:1984
                                                                    • C:\Windows\SysWOW64\NETSH.exe
                                                                      NETSH advfirewall firewall set rule GROUP="Área de Trabalho Remota" NEW enable=YES
                                                                      4⤵
                                                                      • Modifies Windows Firewall
                                                                      PID:1376
                                                                    • C:\Windows\SysWOW64\SC.exe
                                                                      SC create "AmmyyAdmin" binPath= "\"C:\Program Files (x86)\Zeus Tecnologia STI\AmmyyAdmin.exe\" -service" DisplayName= "Ammyy Admin" start= auto
                                                                      4⤵
                                                                      • Launches sc.exe
                                                                      PID:1364
                                                                    • C:\Windows\SysWOW64\SC.exe
                                                                      SC description "AmmyyAdmin" "Sistema de suporte remoto utilizado pela www.ZeusTecnologia.com.br"
                                                                      4⤵
                                                                      • Launches sc.exe
                                                                      PID:1580
                                                                    • C:\Windows\SysWOW64\SC.exe
                                                                      SC failure "AmmyyAdmin" reset=60 actions=restart/60000
                                                                      4⤵
                                                                      • Launches sc.exe
                                                                      PID:1544
                                                                    • C:\Windows\SysWOW64\SC.exe
                                                                      SC start "AmmyyAdmin" | findstr "RUNNING START_PENDING"
                                                                      4⤵
                                                                      • Launches sc.exe
                                                                      PID:1628

                                                              Network

                                                              MITRE ATT&CK Enterprise v6

                                                              Replay Monitor

                                                              Loading Replay Monitor...

                                                              Downloads

                                                              • C:\Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe

                                                                Filesize

                                                                610KB

                                                                MD5

                                                                f07db1e2a512171311f40d080034ba01

                                                                SHA1

                                                                2296ad3bc8807dfa775d43d58c8d3b52d19dd7e2

                                                                SHA256

                                                                f3e997e126aaec0734a6f2a5d68e3d3ec58cc863705cc3991989cc8183af283e

                                                                SHA512

                                                                a8e4e28ff8332bc84471f1dfd02a9c519eda796196d4ce143bd3a7f94d91c2dab1a591996ece81de3f0e2fff2491efc66be611bd802857bb56b024240ad4026b

                                                              • C:\Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe

                                                                Filesize

                                                                610KB

                                                                MD5

                                                                f07db1e2a512171311f40d080034ba01

                                                                SHA1

                                                                2296ad3bc8807dfa775d43d58c8d3b52d19dd7e2

                                                                SHA256

                                                                f3e997e126aaec0734a6f2a5d68e3d3ec58cc863705cc3991989cc8183af283e

                                                                SHA512

                                                                a8e4e28ff8332bc84471f1dfd02a9c519eda796196d4ce143bd3a7f94d91c2dab1a591996ece81de3f0e2fff2491efc66be611bd802857bb56b024240ad4026b

                                                              • C:\Users\Admin\AppData\Local\Temp\is-6SLD0.tmp\1813cdbea071efd7e0b261e0b1f47635.tmp

                                                                Filesize

                                                                711KB

                                                                MD5

                                                                478fbeed5ddcc14317065fafc3c19928

                                                                SHA1

                                                                8a680ce343453e2407444894055e9630f0c36017

                                                                SHA256

                                                                20d3b66b3d08b16204a6471c1eba6e682765a5397f33a1f4607725db3ea6cd2d

                                                                SHA512

                                                                6165a7f11184fc8cc52dbe4ed1f412895f5abc308c1b1f9c793d465ddbae4406a656127b40a15591b26fa737e5d7015c9e927fbfadb095e462d2a1cba1fa417d

                                                              • C:\Users\Admin\AppData\Local\Temp\is-6SLD0.tmp\1813cdbea071efd7e0b261e0b1f47635.tmp

                                                                Filesize

                                                                711KB

                                                                MD5

                                                                478fbeed5ddcc14317065fafc3c19928

                                                                SHA1

                                                                8a680ce343453e2407444894055e9630f0c36017

                                                                SHA256

                                                                20d3b66b3d08b16204a6471c1eba6e682765a5397f33a1f4607725db3ea6cd2d

                                                                SHA512

                                                                6165a7f11184fc8cc52dbe4ed1f412895f5abc308c1b1f9c793d465ddbae4406a656127b40a15591b26fa737e5d7015c9e927fbfadb095e462d2a1cba1fa417d

                                                              • \Program Files (x86)\Zeus Tecnologia STI\GerenciadorZeus.exe

                                                                Filesize

                                                                1.1MB

                                                                MD5

                                                                8d79a74e9577d4d1a42e9a0e76033e4c

                                                                SHA1

                                                                795b91dafd2b16847cb393d98f419bdd9e48fdf3

                                                                SHA256

                                                                1ad012e6a910a80338958b2ad90d1cbd2ca1355f15021b205be23715474530d0

                                                                SHA512

                                                                e411eef003131660b87b978bbd778b9e3dc86537b4d0c2f529ec9e5e26c8bb7760dd62352ca55d9fbf874718cedcb7c7726f11e0b26a31ab5698e5fba051be2b

                                                              • \Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe

                                                                Filesize

                                                                610KB

                                                                MD5

                                                                f07db1e2a512171311f40d080034ba01

                                                                SHA1

                                                                2296ad3bc8807dfa775d43d58c8d3b52d19dd7e2

                                                                SHA256

                                                                f3e997e126aaec0734a6f2a5d68e3d3ec58cc863705cc3991989cc8183af283e

                                                                SHA512

                                                                a8e4e28ff8332bc84471f1dfd02a9c519eda796196d4ce143bd3a7f94d91c2dab1a591996ece81de3f0e2fff2491efc66be611bd802857bb56b024240ad4026b

                                                              • \Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe

                                                                Filesize

                                                                610KB

                                                                MD5

                                                                f07db1e2a512171311f40d080034ba01

                                                                SHA1

                                                                2296ad3bc8807dfa775d43d58c8d3b52d19dd7e2

                                                                SHA256

                                                                f3e997e126aaec0734a6f2a5d68e3d3ec58cc863705cc3991989cc8183af283e

                                                                SHA512

                                                                a8e4e28ff8332bc84471f1dfd02a9c519eda796196d4ce143bd3a7f94d91c2dab1a591996ece81de3f0e2fff2491efc66be611bd802857bb56b024240ad4026b

                                                              • \Program Files (x86)\Zeus Tecnologia STI\SuporteZeus.exe

                                                                Filesize

                                                                610KB

                                                                MD5

                                                                f07db1e2a512171311f40d080034ba01

                                                                SHA1

                                                                2296ad3bc8807dfa775d43d58c8d3b52d19dd7e2

                                                                SHA256

                                                                f3e997e126aaec0734a6f2a5d68e3d3ec58cc863705cc3991989cc8183af283e

                                                                SHA512

                                                                a8e4e28ff8332bc84471f1dfd02a9c519eda796196d4ce143bd3a7f94d91c2dab1a591996ece81de3f0e2fff2491efc66be611bd802857bb56b024240ad4026b

                                                              • \Users\Admin\AppData\Local\Temp\is-6SLD0.tmp\1813cdbea071efd7e0b261e0b1f47635.tmp

                                                                Filesize

                                                                711KB

                                                                MD5

                                                                478fbeed5ddcc14317065fafc3c19928

                                                                SHA1

                                                                8a680ce343453e2407444894055e9630f0c36017

                                                                SHA256

                                                                20d3b66b3d08b16204a6471c1eba6e682765a5397f33a1f4607725db3ea6cd2d

                                                                SHA512

                                                                6165a7f11184fc8cc52dbe4ed1f412895f5abc308c1b1f9c793d465ddbae4406a656127b40a15591b26fa737e5d7015c9e927fbfadb095e462d2a1cba1fa417d

                                                              • memory/672-74-0x0000000003AD0000-0x0000000003C2E000-memory.dmp

                                                                Filesize

                                                                1.4MB

                                                              • memory/672-73-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

                                                                Filesize

                                                                64KB

                                                              • memory/672-77-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

                                                                Filesize

                                                                64KB

                                                              • memory/672-78-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

                                                                Filesize

                                                                64KB

                                                              • memory/672-79-0x0000000003AD0000-0x0000000003C2E000-memory.dmp

                                                                Filesize

                                                                1.4MB

                                                              • memory/672-72-0x0000000001FE0000-0x0000000001FF0000-memory.dmp

                                                                Filesize

                                                                64KB

                                                              • memory/672-62-0x0000000074711000-0x0000000074713000-memory.dmp

                                                                Filesize

                                                                8KB

                                                              • memory/1348-61-0x0000000000400000-0x0000000000417000-memory.dmp

                                                                Filesize

                                                                92KB

                                                              • memory/1348-55-0x0000000000400000-0x0000000000417000-memory.dmp

                                                                Filesize

                                                                92KB

                                                              • memory/1348-54-0x0000000074F41000-0x0000000074F43000-memory.dmp

                                                                Filesize

                                                                8KB

                                                              • memory/1348-76-0x0000000000400000-0x0000000000417000-memory.dmp

                                                                Filesize

                                                                92KB

                                                              • memory/1348-145-0x0000000000400000-0x0000000000417000-memory.dmp

                                                                Filesize

                                                                92KB

                                                              • memory/1788-144-0x0000000000FD0000-0x000000000112E000-memory.dmp

                                                                Filesize

                                                                1.4MB

                                                              • memory/1788-75-0x0000000000FD0000-0x000000000112E000-memory.dmp

                                                                Filesize

                                                                1.4MB