Analysis

  • max time kernel
    129s
  • max time network
    117s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    19/06/2021, 11:14

General

  • Target
    08848e849c6d54a362b67b9800772466.exe
  • Size 1.3MB
  • Sample210619-smze8vhtbx
  • SHA256 72c22d9c2150b022f3f15e30bfd2d76435d4091b99a0e443c96dcb4c48aa5539
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Blocklisted process makes network request 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 25 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Modifies system certificate store 2 TTPs 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\08848e849c6d54a362b67b9800772466.exe
    "C:\Users\Admin\AppData\Local\Temp\08848e849c6d54a362b67b9800772466.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:3260
    • C:\Users\Admin\AppData\Local\Temp\New Feature\vpn.exe
      "C:\Users\Admin\AppData\Local\Temp\New Feature\vpn.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2292
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c cmd < Dormissero.wpd
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2896
        • C:\Windows\SysWOW64\cmd.exe
          cmd
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2716
          • C:\Windows\SysWOW64\findstr.exe
            findstr /V /R "^yDsOhfSavSpAbPmIcKdnQIreaKfHRDgtrOWNQEZgeibhzBUxbMIjNghvAfvCqkATDybISMRQKecJkQIQPUltV$" Uso.wpd
            5⤵
              PID:420
            • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Veduto.exe.com
              Veduto.exe.com o
              5⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:192
              • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Veduto.exe.com
                C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Veduto.exe.com o
                6⤵
                • Executes dropped EXE
                • Checks processor information in registry
                • Modifies registry class
                • Suspicious use of WriteProcessMemory
                PID:3084
                • C:\Users\Admin\AppData\Local\Temp\burxtugcqvdl.exe
                  "C:\Users\Admin\AppData\Local\Temp\burxtugcqvdl.exe"
                  7⤵
                  • Executes dropped EXE
                  • Suspicious use of WriteProcessMemory
                  PID:1864
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\BURXTU~1.TMP,S C:\Users\Admin\AppData\Local\Temp\BURXTU~1.EXE
                    8⤵
                    • Blocklisted process makes network request
                    • Loads dropped DLL
                    • Drops file in Program Files directory
                    • Suspicious use of WriteProcessMemory
                    PID:412
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\system32\rundll32.exe C:\PROGRA~3\LAUVHF~1\JHAKLD~1.TMP,LhoUMw== C:\Users\Admin\AppData\Local\Temp\BURXTU~1.TMP
                      9⤵
                      • Blocklisted process makes network request
                      • Loads dropped DLL
                      • Suspicious use of SetThreadContext
                      • Checks processor information in registry
                      • Modifies system certificate store
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of FindShellTrayWindow
                      • Suspicious use of WriteProcessMemory
                      PID:2508
                      • C:\Windows\system32\rundll32.exe
                        C:\Windows\system32\rundll32.exe C:\Windows\system32\shell32.dll,#61 31801
                        10⤵
                          PID:3796
                        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmpB8D1.tmp.ps1"
                          10⤵
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2896
                        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Executionpolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\tmpCB42.tmp.ps1"
                          10⤵
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          PID:2348
                          • C:\Windows\SysWOW64\nslookup.exe
                            "C:\Windows\system32\nslookup.exe" -type=any localhost
                            11⤵
                              PID:2316
                          • C:\Windows\SysWOW64\schtasks.exe
                            schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
                            10⤵
                              PID:2564
                            • C:\Windows\SysWOW64\schtasks.exe
                              schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
                              10⤵
                                PID:2276
                        • C:\Windows\SysWOW64\WScript.exe
                          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\ohkrngq.vbs"
                          7⤵
                            PID:3860
                          • C:\Windows\SysWOW64\WScript.exe
                            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\oiyfbqa.vbs"
                            7⤵
                            • Blocklisted process makes network request
                            • Modifies system certificate store
                            PID:2692
                      • C:\Windows\SysWOW64\PING.EXE
                        ping 127.0.0.1 -n 30
                        5⤵
                        • Runs ping.exe
                        PID:1432
                • C:\Users\Admin\AppData\Local\Temp\New Feature\4.exe
                  "C:\Users\Admin\AppData\Local\Temp\New Feature\4.exe"
                  2⤵
                  • Executes dropped EXE
                  • Drops startup file
                  • Suspicious use of WriteProcessMemory
                  PID:2352
                  • C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe
                    "C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"
                    3⤵
                    • Executes dropped EXE
                    • Suspicious behavior: AddClipboardFormatListener
                    PID:4040

              Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    memory/1864-152-0x0000000000400000-0x00000000009B4000-memory.dmp

                    memory/1864-151-0x00000000027D0000-0x00000000028BD000-memory.dmp

                    memory/2348-207-0x0000000004DC2000-0x0000000004DC3000-memory.dmp

                    memory/2348-220-0x0000000004DC3000-0x0000000004DC4000-memory.dmp

                    memory/2348-206-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

                    memory/2348-205-0x0000000008470000-0x0000000008471000-memory.dmp

                    memory/2348-202-0x0000000008050000-0x0000000008051000-memory.dmp

                    memory/2352-135-0x0000000000400000-0x00000000008F1000-memory.dmp

                    memory/2352-134-0x0000000000900000-0x0000000000A4A000-memory.dmp

                    memory/2508-164-0x00000000064E0000-0x00000000064E1000-memory.dmp

                    memory/2896-177-0x0000000006F52000-0x0000000006F53000-memory.dmp

                    memory/2896-192-0x0000000006F53000-0x0000000006F54000-memory.dmp

                    memory/2896-176-0x0000000006F50000-0x0000000006F51000-memory.dmp

                    memory/2896-170-0x00000000048E0000-0x00000000048E1000-memory.dmp

                    memory/2896-178-0x0000000007550000-0x0000000007551000-memory.dmp

                    memory/2896-179-0x00000000085D0000-0x00000000085D1000-memory.dmp

                    memory/2896-180-0x0000000008350000-0x0000000008351000-memory.dmp

                    memory/2896-182-0x0000000008450000-0x0000000008451000-memory.dmp

                    memory/2896-187-0x0000000009B90000-0x0000000009B91000-memory.dmp

                    memory/2896-188-0x0000000009110000-0x0000000009111000-memory.dmp

                    memory/2896-189-0x00000000091B0000-0x00000000091B1000-memory.dmp

                    memory/2896-174-0x0000000007BC0000-0x0000000007BC1000-memory.dmp

                    memory/2896-175-0x0000000007CA0000-0x0000000007CA1000-memory.dmp

                    memory/2896-171-0x0000000007590000-0x0000000007591000-memory.dmp

                    memory/2896-172-0x0000000007320000-0x0000000007321000-memory.dmp

                    memory/2896-173-0x0000000007C30000-0x0000000007C31000-memory.dmp

                    memory/3084-141-0x00000000008A0000-0x00000000008A1000-memory.dmp

                    memory/3796-165-0x0000000000B80000-0x0000000000D20000-memory.dmp

                    memory/3796-166-0x000002C925F90000-0x000002C926141000-memory.dmp

                    memory/4040-139-0x00000000009E0000-0x0000000000B2A000-memory.dmp

                    memory/4040-140-0x0000000000400000-0x00000000008F1000-memory.dmp