Overview

overview

10

Static

static

voidcrypt.exe

windows7_x64

10

voidcrypt.exe

windows10_x64

10

Analysis

  • max time kernel
    61s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    12-09-2020 15:53

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General

  • Target

    voidcrypt.exe

  • Size

    997KB

  • MD5

    ba454585b9f42c7254c931c192556e08

  • SHA1

    0b530303634283a43d53abd9190106869f57ba5a

  • SHA256

    26690dae115f47a1e0167750209a30cc68f51c5090e3b908105c93967e5156fa

  • SHA512

    2cb918eab6776c7cfea031cbb48cc4e33e068489a37f39ba1e246f32fef7a35c3511293b399c81b5b8056bca50d725554866584460f04efe0d65c1d1c625bc4b

Score
10/10
evasionpersistencespywareransomwareouroboros

Malware Config

Signatures

  • Ouroboros/Zeropadypt

    Ransomware family based on open-source CryptoWire.

    ransomwareouroboros
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Drops desktop.ini file(s) 94 IoCs
  • Drops file in System32 directory 1 IoCs
  • Modifies service 2 TTPs 10 IoCs
    persistence
  • Drops file in Program Files directory 18637 IoCs
  • Drops file in Windows directory 1398 IoCs
  • NTFS ADS 45 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of WriteProcessMemory 124 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\voidcrypt.exe
    "C:\Users\Admin\AppData\Local\Temp\voidcrypt.exe"
    1⤵
    • Drops startup file
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1060
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c net stop SQLWriter
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1080
      • C:\Windows\SysWOW64\net.exe
        net stop SQLWriter
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1516
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop SQLWriter
          4⤵
            PID:1700
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c net stop SQLBrowser
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1376
        • C:\Windows\SysWOW64\net.exe
          net stop SQLBrowser
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1816
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 stop SQLBrowser
            4⤵
              PID:1828
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c net stop MSSQLSERVER
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1840
          • C:\Windows\SysWOW64\net.exe
            net stop MSSQLSERVER
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1772
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop MSSQLSERVER
              4⤵
                PID:1776
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c net stop MSSQL$CONTOSO1
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:524
            • C:\Windows\SysWOW64\net.exe
              net stop MSSQL$CONTOSO1
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:336
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 stop MSSQL$CONTOSO1
                4⤵
                  PID:1264
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c net stop MSDTC
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:1200
              • C:\Windows\SysWOW64\net.exe
                net stop MSDTC
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1348
                • C:\Windows\SysWOW64\net1.exe
                  C:\Windows\system32\net1 stop MSDTC
                  4⤵
                    PID:1680
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c bcdedit /set {default} bootstatuspolicy ignoreallfailures
                2⤵
                  PID:1640
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /c bcdedit /set {default} recoveryenabled no
                  2⤵
                    PID:1600
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /c wbadmin delete catalog -quiet
                    2⤵
                      PID:1652
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /c net stop SQLSERVERAGENT
                      2⤵
                        PID:1612
                        • C:\Windows\SysWOW64\net.exe
                          net stop SQLSERVERAGENT
                          3⤵
                            PID:1916
                            • C:\Windows\SysWOW64\net1.exe
                              C:\Windows\system32\net1 stop SQLSERVERAGENT
                              4⤵
                                PID:1884
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /c net stop MSSQLSERVER
                            2⤵
                              PID:1936
                              • C:\Windows\SysWOW64\net.exe
                                net stop MSSQLSERVER
                                3⤵
                                  PID:1976
                                  • C:\Windows\SysWOW64\net1.exe
                                    C:\Windows\system32\net1 stop MSSQLSERVER
                                    4⤵
                                      PID:1944
                                • C:\Windows\SysWOW64\cmd.exe
                                  C:\Windows\system32\cmd.exe /c net stop vds
                                  2⤵
                                    PID:1096
                                    • C:\Windows\SysWOW64\net.exe
                                      net stop vds
                                      3⤵
                                        PID:1800
                                        • C:\Windows\SysWOW64\net1.exe
                                          C:\Windows\system32\net1 stop vds
                                          4⤵
                                            PID:676
                                      • C:\Windows\SysWOW64\cmd.exe
                                        C:\Windows\system32\cmd.exe /c netsh advfirewall set currentprofile state off
                                        2⤵
                                          PID:1856
                                          • C:\Windows\SysWOW64\netsh.exe
                                            netsh advfirewall set currentprofile state off
                                            3⤵
                                            • Modifies service
                                            PID:600
                                        • C:\Windows\SysWOW64\cmd.exe
                                          C:\Windows\system32\cmd.exe /c netsh firewall set opmode mode=disable
                                          2⤵
                                            PID:1476
                                            • C:\Windows\SysWOW64\netsh.exe
                                              netsh firewall set opmode mode=disable
                                              3⤵
                                              • Modifies service
                                              PID:1048

                                        Network

                                        MITRE ATT&CK Enterprise v6

                                        Replay Monitor

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                                        Downloads

                                        • memory/1060-32-0x0000000001060000-0x0000000001071000-memory.dmp

                                          Filesize

                                          68KB

                                          Download

                                        • memory/1060-31-0x0000000000C50000-0x0000000000C61000-memory.dmp

                                          Filesize

                                          68KB

                                          Download

                                        • memory/1060-33-0x0000000000C50000-0x0000000000C61000-memory.dmp

                                          Filesize

                                          68KB

                                          Download