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Analysis

  • max time kernel
    13s
  • max time network
    1720s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-04-2021 11:42

General

  • Target

    Install2.exe

  • Size

    497KB

  • MD5

    41a5f4fd1ea7cac4aa94a87aebccfef0

  • SHA1

    0d0abf079413a4c773754bf4fda338dc5b9a8ddc

  • SHA256

    97e95e99fd499ec45a7c1d8683d5731ce5e7a8fb8b710622e578cd169a00d8d9

  • SHA512

    5ca14bda498f26efff4e1179969b8f2c25244063c7bf25f3ec20b5cd24b5be320bbfb8b3d0b2d66f5c5b415da777a766fece5f251a4247773c6cb991417fb75f

Malware Config

Signatures

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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.

  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Install2.exe
    "C:\Users\Admin\AppData\Local\Temp\Install2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3656
    • C:\Users\Admin\AppData\Local\Temp\is-IM624.tmp\Install2.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-IM624.tmp\Install2.tmp" /SL5="$2011A,235791,152064,C:\Users\Admin\AppData\Local\Temp\Install2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2364
      • C:\Users\Admin\AppData\Local\Temp\is-8DF7P.tmp\Ultra.exe
        "C:\Users\Admin\AppData\Local\Temp\is-8DF7P.tmp\Ultra.exe" /S /UID=burnerch1
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in Program Files directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1884
        • C:\Program Files\Google\VJMPXCUSUI\ultramediaburner.exe
          "C:\Program Files\Google\VJMPXCUSUI\ultramediaburner.exe" /VERYSILENT
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:3628
          • C:\Users\Admin\AppData\Local\Temp\is-AFHH9.tmp\ultramediaburner.tmp
            "C:\Users\Admin\AppData\Local\Temp\is-AFHH9.tmp\ultramediaburner.tmp" /SL5="$60038,281924,62464,C:\Program Files\Google\VJMPXCUSUI\ultramediaburner.exe" /VERYSILENT
            5⤵
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of WriteProcessMemory
            PID:576
            • C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe
              "C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe" -silent -desktopShortcut -programMenu
              6⤵
              • Executes dropped EXE
              PID:3960
        • C:\Users\Admin\AppData\Local\Temp\81-eb5fc-7ce-77ca8-053a5dc7d6108\Joxijiciko.exe
          "C:\Users\Admin\AppData\Local\Temp\81-eb5fc-7ce-77ca8-053a5dc7d6108\Joxijiciko.exe"
          4⤵
          • Executes dropped EXE
          • Modifies system certificate store
          • Suspicious use of AdjustPrivilegeToken
          PID:3776
        • C:\Users\Admin\AppData\Local\Temp\1b-bc4ee-e9f-d3594-ad77d3c8324fd\Kuqushakylo.exe
          "C:\Users\Admin\AppData\Local\Temp\1b-bc4ee-e9f-d3594-ad77d3c8324fd\Kuqushakylo.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:3056
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\l5q4s0k2.fwt\instEU.exe & exit
            5⤵
              PID:4456
              • C:\Users\Admin\AppData\Local\Temp\l5q4s0k2.fwt\instEU.exe
                C:\Users\Admin\AppData\Local\Temp\l5q4s0k2.fwt\instEU.exe
                6⤵
                  PID:4640
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\o25oizz3.ejv\requête.exe & exit
                5⤵
                  PID:5068
                  • C:\Users\Admin\AppData\Local\Temp\o25oizz3.ejv\requête.exe
                    C:\Users\Admin\AppData\Local\Temp\o25oizz3.ejv\requête.exe
                    6⤵
                      PID:5108
                      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\main.exe
                        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\main.exe"
                        7⤵
                          PID:4036
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\lcs2u1mo.fer\google-game.exe & exit
                      5⤵
                        PID:4968
                        • C:\Users\Admin\AppData\Local\Temp\lcs2u1mo.fer\google-game.exe
                          C:\Users\Admin\AppData\Local\Temp\lcs2u1mo.fer\google-game.exe
                          6⤵
                            PID:4448
                            • C:\Windows\SysWOW64\rundll32.exe
                              "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                              7⤵
                                PID:3736
                          • C:\Windows\System32\cmd.exe
                            "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\p5p4zqoh.n4t\md1_1eaf.exe & exit
                            5⤵
                              PID:4356
                              • C:\Users\Admin\AppData\Local\Temp\p5p4zqoh.n4t\md1_1eaf.exe
                                C:\Users\Admin\AppData\Local\Temp\p5p4zqoh.n4t\md1_1eaf.exe
                                6⤵
                                  PID:4160
                              • C:\Windows\System32\cmd.exe
                                "C:\Windows\System32\cmd.exe" /k C:\Users\Admin\AppData\Local\Temp\n0exid0g.xjj\askinstall39.exe & exit
                                5⤵
                                  PID:4916
                                  • C:\Users\Admin\AppData\Local\Temp\n0exid0g.xjj\askinstall39.exe
                                    C:\Users\Admin\AppData\Local\Temp\n0exid0g.xjj\askinstall39.exe
                                    6⤵
                                      PID:4788
                                      • C:\Windows\SysWOW64\cmd.exe
                                        cmd.exe /c taskkill /f /im chrome.exe
                                        7⤵
                                          PID:5064
                                          • C:\Windows\SysWOW64\taskkill.exe
                                            taskkill /f /im chrome.exe
                                            8⤵
                                            • Kills process with taskkill
                                            PID:4384
                            • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
                              "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
                              1⤵
                                PID:4108
                              • C:\Windows\system32\browser_broker.exe
                                C:\Windows\system32\browser_broker.exe -Embedding
                                1⤵
                                  PID:4160
                                • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                                  "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                                  1⤵
                                    PID:4944
                                  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                                    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                                    1⤵
                                      PID:5112
                                    • C:\Windows\system32\svchost.exe
                                      C:\Windows\system32\svchost.exe -k SystemNetworkService
                                      1⤵
                                        PID:4844

                                      Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      • memory/68-203-0x000001F928680000-0x000001F9286F0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/576-139-0x00000000001E0000-0x00000000001E1000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/684-213-0x000001AEBB140000-0x000001AEBB1B0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/1080-208-0x000001FF31200000-0x000001FF31270000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/1188-232-0x000001E98CE40000-0x000001E98CEB0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/1244-233-0x0000023801620000-0x0000023801690000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/1368-222-0x000002668DB90000-0x000002668DC00000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/1788-228-0x00000230EEE40000-0x00000230EEEB0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/1884-123-0x0000000002F90000-0x0000000002F92000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/2220-183-0x0000026771CE0000-0x0000026771D50000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/2328-212-0x000001C9CFF80000-0x000001C9CFFF0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/2336-220-0x00000243EBC80000-0x00000243EBCF0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/2364-119-0x00000000001E0000-0x00000000001E1000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/2556-187-0x000001A735790000-0x000001A7357DB000-memory.dmp

                                        Filesize

                                        300KB

                                      • memory/2556-191-0x000001A736000000-0x000001A736070000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/2640-238-0x0000015D8D500000-0x0000015D8D570000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/2656-245-0x000001CB60280000-0x000001CB602F0000-memory.dmp

                                        Filesize

                                        448KB

                                      • memory/3056-146-0x00000000015D0000-0x00000000015D2000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/3056-151-0x00000000015D5000-0x00000000015D6000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/3056-148-0x00000000015D2000-0x00000000015D4000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/3628-126-0x0000000000400000-0x0000000000416000-memory.dmp

                                        Filesize

                                        88KB

                                      • memory/3656-114-0x0000000000400000-0x000000000042B000-memory.dmp

                                        Filesize

                                        172KB

                                      • memory/3736-182-0x000000000450A000-0x000000000460B000-memory.dmp

                                        Filesize

                                        1.0MB

                                      • memory/3736-193-0x00000000046D0000-0x000000000472C000-memory.dmp

                                        Filesize

                                        368KB

                                      • memory/3776-141-0x00000000026E0000-0x00000000026E2000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/3960-150-0x0000000000A15000-0x0000000000A17000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/3960-149-0x0000000000A14000-0x0000000000A15000-memory.dmp

                                        Filesize

                                        4KB

                                      • memory/3960-140-0x0000000000A10000-0x0000000000A12000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/3960-147-0x0000000000A12000-0x0000000000A14000-memory.dmp

                                        Filesize

                                        8KB

                                      • memory/4160-257-0x0000000003720000-0x0000000003730000-memory.dmp

                                        Filesize

                                        64KB

                                      • memory/4160-251-0x0000000003580000-0x0000000003590000-memory.dmp

                                        Filesize

                                        64KB

                                      • memory/4640-157-0x0000000000430000-0x00000000004DE000-memory.dmp

                                        Filesize

                                        696KB

                                      • memory/4640-158-0x00000000005E0000-0x00000000005F2000-memory.dmp

                                        Filesize

                                        72KB

                                      • memory/4844-250-0x000001FBBF400000-0x000001FBBF4FF000-memory.dmp

                                        Filesize

                                        1020KB

                                      • memory/4844-195-0x000001FBBCD80000-0x000001FBBCDF0000-memory.dmp

                                        Filesize

                                        448KB