Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/03/2024, 15:36

General

  • Target
    80ac8da6cd68d70640b3344da6e7884b25fc3c588162ae589d194599030f481a.exe
  • Size 893KB
  • Sample240302-s2an8sef3z
  • SHA256 80ac8da6cd68d70640b3344da6e7884b25fc3c588162ae589d194599030f481a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Possible privilege escalation attempt 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 3 IoCs

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

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Modifies File Icons 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 47 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 11 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\80ac8da6cd68d70640b3344da6e7884b25fc3c588162ae589d194599030f481a.exe
    "C:\Users\Admin\AppData\Local\Temp\80ac8da6cd68d70640b3344da6e7884b25fc3c588162ae589d194599030f481a.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Modifies File Icons
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2568
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c takeown /f "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup" && icacls "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup" /grant administrators:F /t
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3552
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup"
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:3080
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup" /grant administrators:F /t
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        PID:4732
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c takeown /f "C:\Users\Administrator\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup" && icacls "C:\Users\Administrator\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup" /grant administrators:F /t
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3924
      • C:\Windows\SysWOW64\takeown.exe
        takeown /f "C:\Users\Administrator\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup"
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • Suspicious use of AdjustPrivilegeToken
        PID:3668
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c @echo off
      2⤵
        PID:3404
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c if exist regset.ini @del /q /f regset.ini
        2⤵
          PID:1100
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c echo HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{5CE25775-92B7-477d-9603-852F0B34D8B0} [2 8 19] >regset.ini
          2⤵
            PID:4664
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c regini regset.ini
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3592
            • C:\Windows\SysWOW64\regini.exe
              regini regset.ini
              3⤵
              • Modifies Internet Explorer settings
              PID:1008
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c @del /q /f regset.ini
            2⤵
              PID:100
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c @echo off
              2⤵
                PID:3604
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c if exist regset.ini @del /q /f regset.ini
                2⤵
                  PID:2064
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /c echo HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{A481937F-4D99-4B11-86E6-5B0F1007C557} [2 8 19] >regset.ini
                  2⤵
                    PID:756
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c regini regset.ini
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1796
                    • C:\Windows\SysWOW64\regini.exe
                      regini regset.ini
                      3⤵
                      • Modifies Internet Explorer settings
                      PID:1800
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c @del /q /f regset.ini
                    2⤵
                      PID:1520
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c @echo off
                      2⤵
                        PID:2144
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /c if exist regset.ini @del /q /f regset.ini
                        2⤵
                          PID:4832
                        • C:\Windows\SysWOW64\cmd.exe
                          C:\Windows\system32\cmd.exe /c echo HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes [2 8 19] >regset.ini
                          2⤵
                            PID:3396
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /c regini regset.ini
                            2⤵
                            • Suspicious use of WriteProcessMemory
                            PID:4400
                            • C:\Windows\SysWOW64\regini.exe
                              regini regset.ini
                              3⤵
                              • Modifies Internet Explorer settings
                              PID:5100
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /c @del /q /f regset.ini
                            2⤵
                              PID:4104
                            • C:\Windows\web\sms.exe
                              C:\Windows\web\sms.exe
                              2⤵
                              • Executes dropped EXE
                              PID:4560
                              • C:\Windows\SysWOW64\cmd.exe
                                cmd /C taskkill /f /im msedge.exe
                                3⤵
                                  PID:5088
                                  • C:\Windows\SysWOW64\taskkill.exe
                                    taskkill /f /im msedge.exe
                                    4⤵
                                    • Kills process with taskkill
                                    • Suspicious use of AdjustPrivilegeToken
                                    PID:956
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /c ping 127.0.0.1 -n 2&del /q "C:\Users\Admin\AppData\Local\Temp\80ac8da6cd68d70640b3344da6e7884b25fc3c588162ae589d194599030f481a.exe"
                                2⤵
                                  PID:4580
                                  • C:\Windows\SysWOW64\PING.EXE
                                    ping 127.0.0.1 -n 2
                                    3⤵
                                    • Runs ping.exe
                                    PID:4980

                              Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

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                                    Downloads

                                    regset.ini

                                    • Path C:\Users\Admin\AppData\Local\Temp\regset.ini
                                    • Size 118B
                                    • SHA256 8868e97e8dfbc08e681ab68b6b5b1a756cd352354d8ed6c5ce1cb6dee07e55f1
                                    • MD5 SHA1 SHA512

                                    regset.ini

                                    • Path C:\Users\Admin\AppData\Local\Temp\regset.ini
                                    • Size 118B
                                    • SHA256 68a17dd52a94c7807e46ec191f4481f330eba25303daba341316ac389c17282e
                                    • MD5 SHA1 SHA512

                                    regset.ini

                                    • Path C:\Users\Admin\AppData\Local\Temp\regset.ini
                                    • Size 79B
                                    • SHA256 0a31ed19b74d461d0819477eb328af5f8ef3508974df347cf4304fa62977d1a0
                                    • MD5 SHA1 SHA512

                                    sms.exe

                                    • Path C:\Windows\web\sms.exe
                                    • Size 775KB
                                    • SHA256 6f01b51d56b152362ad864e5c4e3f8979aa60c565021e0eff2b34fba422d4870
                                    • MD5 SHA1 SHA512 SSDEEP

                                    memory/2568-0-0x0000000000B40000-0x0000000000C99000-memory.dmp

                                    memory/2568-1-0x0000000000B40000-0x0000000000C99000-memory.dmp

                                    memory/2568-31-0x0000000000B40000-0x0000000000C99000-memory.dmp