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Analysis

  • max time kernel
    1801s
  • max time network
    1324s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    30-04-2021 01:38

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Malware Config

Signatures

  • Checks for common network interception software 1 TTPs

    Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 17 IoCs
  • UPX packed file 8 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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 System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 12 IoCs
  • Drops file in Windows directory 1 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 4 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2680
  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s Browser
    1⤵
      PID:2812
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s WpnService
      1⤵
        PID:2696
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
        1⤵
          PID:2472
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2436
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
          1⤵
            PID:1900
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s SENS
            1⤵
              PID:1444
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s Themes
              1⤵
                PID:1300
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                1⤵
                  PID:1236
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                  1⤵
                    PID:1084
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                    1⤵
                      PID:864
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                      1⤵
                        PID:356
                      • C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe
                        "C:\Users\Admin\AppData\Local\Temp\keygen-step-4.exe"
                        1⤵
                        • Checks computer location settings
                        • Suspicious use of WriteProcessMemory
                        PID:4044
                        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe
                          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\xiuhuali.exe"
                          2⤵
                          • Executes dropped EXE
                          • Drops file in Program Files directory
                          • Suspicious use of SetWindowsHookEx
                          • Suspicious use of WriteProcessMemory
                          PID:3540
                          • C:\Windows\SysWOW64\rundll32.exe
                            "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                            3⤵
                            • Loads dropped DLL
                            • Modifies registry class
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:3524
                        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe
                          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\JoSetp.exe"
                          2⤵
                          • Executes dropped EXE
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2404
                        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe
                          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                          2⤵
                          • Executes dropped EXE
                          • Suspicious use of WriteProcessMemory
                          PID:3656
                          • C:\Users\Admin\AppData\Local\Temp\is-TQRNS.tmp\Install.tmp
                            "C:\Users\Admin\AppData\Local\Temp\is-TQRNS.tmp\Install.tmp" /SL5="$8005A,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                            3⤵
                            • Executes dropped EXE
                            • Loads dropped DLL
                            • Suspicious use of WriteProcessMemory
                            PID:3540
                            • C:\Users\Admin\AppData\Local\Temp\is-6ESI3.tmp\Ultra.exe
                              "C:\Users\Admin\AppData\Local\Temp\is-6ESI3.tmp\Ultra.exe" /S /UID=burnerch1
                              4⤵
                              • 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:2748
                              • C:\Program Files\Windows Security\NTKCXIRNFS\ultramediaburner.exe
                                "C:\Program Files\Windows Security\NTKCXIRNFS\ultramediaburner.exe" /VERYSILENT
                                5⤵
                                • Executes dropped EXE
                                • Suspicious use of WriteProcessMemory
                                PID:3620
                                • C:\Users\Admin\AppData\Local\Temp\is-G93LK.tmp\ultramediaburner.tmp
                                  "C:\Users\Admin\AppData\Local\Temp\is-G93LK.tmp\ultramediaburner.tmp" /SL5="$401C8,281924,62464,C:\Program Files\Windows Security\NTKCXIRNFS\ultramediaburner.exe" /VERYSILENT
                                  6⤵
                                  • Executes dropped EXE
                                  • Drops file in Program Files directory
                                  • Suspicious behavior: EnumeratesProcesses
                                  • Suspicious use of FindShellTrayWindow
                                  • Suspicious use of WriteProcessMemory
                                  PID:2024
                                  • C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe
                                    "C:\Program Files (x86)\UltraMediaBurner\UltraMediaBurner.exe" -silent -desktopShortcut -programMenu
                                    7⤵
                                    • Executes dropped EXE
                                    PID:3200
                              • C:\Users\Admin\AppData\Local\Temp\aa-86cd9-828-d9d80-eb947b4e9557c\Dakaedafubu.exe
                                "C:\Users\Admin\AppData\Local\Temp\aa-86cd9-828-d9d80-eb947b4e9557c\Dakaedafubu.exe"
                                5⤵
                                • Executes dropped EXE
                                • Suspicious use of WriteProcessMemory
                                PID:192
                                • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
                                  dw20.exe -x -s 1300
                                  6⤵
                                    PID:5108
                                • C:\Users\Admin\AppData\Local\Temp\3f-f24b1-888-135a1-0ec06cfe00f7c\Digezhahynu.exe
                                  "C:\Users\Admin\AppData\Local\Temp\3f-f24b1-888-135a1-0ec06cfe00f7c\Digezhahynu.exe"
                                  5⤵
                                  • Executes dropped EXE
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:2704
                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe
                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe"
                            2⤵
                            • Executes dropped EXE
                            • Modifies system certificate store
                            • Suspicious use of WriteProcessMemory
                            PID:3644
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 && del "C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe" >> NUL
                              3⤵
                              • Suspicious use of WriteProcessMemory
                              PID:4248
                              • C:\Windows\SysWOW64\PING.EXE
                                ping 127.0.0.1
                                4⤵
                                • Runs ping.exe
                                PID:4296
                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\jg6_6asg.exe
                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\jg6_6asg.exe"
                            2⤵
                            • Executes dropped EXE
                            • Checks whether UAC is enabled
                            PID:4664
                          • C:\Users\Admin\AppData\Local\Temp\RarSFX0\gaoou.exe
                            "C:\Users\Admin\AppData\Local\Temp\RarSFX0\gaoou.exe"
                            2⤵
                            • Executes dropped EXE
                            • Adds Run key to start application
                            PID:4920
                            • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                              C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                              3⤵
                              • Executes dropped EXE
                              PID:4988
                            • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                              C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                              3⤵
                              • Executes dropped EXE
                              PID:3644
                            • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                              C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                              3⤵
                              • Executes dropped EXE
                              PID:1724
                            • C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe
                              C:\Users\Admin\AppData\Local\Temp\jfiag3g_gg.exe /scookiestxt C:\Users\Admin\AppData\Local\Temp\fj4ghga23_fsa.txt
                              3⤵
                              • Executes dropped EXE
                              PID:3576
                        • \??\c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s BITS
                          1⤵
                          • Suspicious use of SetThreadContext
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          PID:3024
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                            2⤵
                            • Checks processor information in registry
                            • Modifies data under HKEY_USERS
                            • Modifies registry class
                            PID:2660
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                            2⤵
                            • Drops file in System32 directory
                            • Checks processor information in registry
                            • Modifies data under HKEY_USERS
                            • Modifies registry class
                            PID:3788
                        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
                          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
                          1⤵
                          • Drops file in Windows directory
                          • Modifies Internet Explorer settings
                          • Modifies registry class
                          • Suspicious use of SetWindowsHookEx
                          PID:4444
                        • C:\Windows\system32\browser_broker.exe
                          C:\Windows\system32\browser_broker.exe -Embedding
                          1⤵
                          • Modifies Internet Explorer settings
                          PID:4484
                        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                          1⤵
                          • Suspicious behavior: MapViewOfSection
                          • Suspicious use of SetWindowsHookEx
                          • Suspicious use of WriteProcessMemory
                          PID:4756
                        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                          1⤵
                          • Modifies Internet Explorer settings
                          • Modifies registry class
                          PID:5024
                        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                          1⤵
                          • Modifies registry class
                          PID:4144
                        • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                          "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                          1⤵
                            PID:4708
                          • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                            "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                            1⤵
                            • Modifies registry class
                            PID:3856

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/192-226-0x0000000000D80000-0x0000000000D82000-memory.dmp

                            Filesize

                            8KB

                          • memory/356-285-0x000001AD086A0000-0x000001AD08710000-memory.dmp

                            Filesize

                            448KB

                          • memory/356-163-0x000001AD08190000-0x000001AD08200000-memory.dmp

                            Filesize

                            448KB

                          • memory/864-293-0x000002875B620000-0x000002875B690000-memory.dmp

                            Filesize

                            448KB

                          • memory/864-172-0x000002875B540000-0x000002875B5B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1084-170-0x000001B399F70000-0x000001B399FE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1084-291-0x000001B399FE0000-0x000001B39A050000-memory.dmp

                            Filesize

                            448KB

                          • memory/1236-180-0x00000250ED060000-0x00000250ED0D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1300-178-0x0000015BAE240000-0x0000015BAE2B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1300-299-0x0000015BAE7B0000-0x0000015BAE820000-memory.dmp

                            Filesize

                            448KB

                          • memory/1444-295-0x000002D860E10000-0x000002D860E80000-memory.dmp

                            Filesize

                            448KB

                          • memory/1444-174-0x000002D860CD0000-0x000002D860D40000-memory.dmp

                            Filesize

                            448KB

                          • memory/1900-297-0x000001C85D020000-0x000001C85D090000-memory.dmp

                            Filesize

                            448KB

                          • memory/1900-176-0x000001C85CF40000-0x000001C85CFB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2024-216-0x00000000001E0000-0x00000000001E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2404-185-0x0000000000870000-0x0000000000871000-memory.dmp

                            Filesize

                            4KB

                          • memory/2404-189-0x0000000000DA0000-0x0000000000DA1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2404-188-0x0000000002970000-0x000000000298C000-memory.dmp

                            Filesize

                            112KB

                          • memory/2404-187-0x0000000000D90000-0x0000000000D91000-memory.dmp

                            Filesize

                            4KB

                          • memory/2404-190-0x000000001B5D0000-0x000000001B5D2000-memory.dmp

                            Filesize

                            8KB

                          • memory/2436-289-0x000001BC0FA40000-0x000001BC0FAB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2436-168-0x000001BC0EE90000-0x000001BC0EF00000-memory.dmp

                            Filesize

                            448KB

                          • memory/2472-166-0x0000022461240000-0x00000224612B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2472-287-0x00000224612B0000-0x0000022461320000-memory.dmp

                            Filesize

                            448KB

                          • memory/2660-164-0x0000023E7E3D0000-0x0000023E7E440000-memory.dmp

                            Filesize

                            448KB

                          • memory/2680-155-0x000002100AD00000-0x000002100AD70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2696-160-0x00000201A8CC0000-0x00000201A8D30000-memory.dmp

                            Filesize

                            448KB

                          • memory/2704-231-0x0000000003100000-0x0000000003102000-memory.dmp

                            Filesize

                            8KB

                          • memory/2704-238-0x0000000003102000-0x0000000003104000-memory.dmp

                            Filesize

                            8KB

                          • memory/2748-208-0x0000000002710000-0x0000000002712000-memory.dmp

                            Filesize

                            8KB

                          • memory/2812-156-0x0000021C65210000-0x0000021C65280000-memory.dmp

                            Filesize

                            448KB

                          • memory/2812-283-0x0000021C65330000-0x0000021C653A0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3024-150-0x0000027645AB0000-0x0000027645AFB000-memory.dmp

                            Filesize

                            300KB

                          • memory/3024-152-0x0000027645B70000-0x0000027645BE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3024-126-0x00000276457D0000-0x00000276457D2000-memory.dmp

                            Filesize

                            8KB

                          • memory/3200-239-0x00000000030F2000-0x00000000030F4000-memory.dmp

                            Filesize

                            8KB

                          • memory/3200-243-0x00000000030F5000-0x00000000030F7000-memory.dmp

                            Filesize

                            8KB

                          • memory/3200-230-0x00000000030F0000-0x00000000030F2000-memory.dmp

                            Filesize

                            8KB

                          • memory/3200-241-0x00000000030F4000-0x00000000030F5000-memory.dmp

                            Filesize

                            4KB

                          • memory/3524-124-0x00000000048F0000-0x000000000494C000-memory.dmp

                            Filesize

                            368KB

                          • memory/3524-123-0x000000000114C000-0x000000000124D000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/3540-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/3620-211-0x0000000000400000-0x0000000000416000-memory.dmp

                            Filesize

                            88KB

                          • memory/3644-235-0x0000000002BF0000-0x0000000002BFD000-memory.dmp

                            Filesize

                            52KB

                          • memory/3656-193-0x0000000000400000-0x000000000042B000-memory.dmp

                            Filesize

                            172KB

                          • memory/3788-203-0x0000025CB65C0000-0x0000025CB660B000-memory.dmp

                            Filesize

                            300KB

                          • memory/3788-204-0x0000025CB6900000-0x0000025CB6970000-memory.dmp

                            Filesize

                            448KB

                          • memory/3788-242-0x0000025CB8F00000-0x0000025CB8FFF000-memory.dmp

                            Filesize

                            1020KB

                          • memory/4664-250-0x0000000003560000-0x0000000003570000-memory.dmp

                            Filesize

                            64KB

                          • memory/4664-256-0x0000000003700000-0x0000000003710000-memory.dmp

                            Filesize

                            64KB