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Analysis

  • max time kernel
    1799s
  • max time network
    1463s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    08-06-2021 06:47

General

  • Target

    keygen-step-4.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Malware Config

Signatures

  • Executes dropped EXE 11 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 1 IoCs
  • 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 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 3 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 16 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 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 ShellHWDetection
    1⤵
      PID:1948
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Browser
      1⤵
        PID:2824
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
        1⤵
          PID:2788
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s WpnService
          1⤵
            PID:2780
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2536
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
              1⤵
                PID:2520
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s SENS
                1⤵
                  PID:1428
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                  1⤵
                    PID:1384
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s Themes
                    1⤵
                      PID:1192
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1104
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:60
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                          1⤵
                            PID:1004
                          • 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:3228
                            • 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:2580
                              • C:\Windows\SysWOW64\rundll32.exe
                                "C:\Windows\System32\rundll32.exe" "C:\Program Files\install.dll",install
                                3⤵
                                • Loads dropped DLL
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                • Suspicious use of WriteProcessMemory
                                PID:3156
                            • 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:2736
                            • 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:3492
                              • C:\Users\Admin\AppData\Local\Temp\is-11JU7.tmp\Install.tmp
                                "C:\Users\Admin\AppData\Local\Temp\is-11JU7.tmp\Install.tmp" /SL5="$400D4,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                                3⤵
                                • Executes dropped EXE
                                • Loads dropped DLL
                                PID:2912
                            • 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:1852
                              • 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:1896
                                • C:\Windows\SysWOW64\PING.EXE
                                  ping 127.0.0.1
                                  4⤵
                                  • Runs ping.exe
                                  PID:424
                            • 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
                              • Suspicious use of AdjustPrivilegeToken
                              PID:4156
                            • 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
                              • Suspicious use of WriteProcessMemory
                              PID:4712
                              • 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:4768
                              • 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
                                • Suspicious behavior: EnumeratesProcesses
                                PID:4876
                              • 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
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1068
                              • 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
                                • Suspicious behavior: EnumeratesProcesses
                                PID:4892
                          • \??\c:\windows\system32\svchost.exe
                            c:\windows\system32\svchost.exe -k netsvcs -s BITS
                            1⤵
                            • Suspicious use of SetThreadContext
                            • Modifies data under HKEY_USERS
                            • Modifies registry class
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:3092
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Checks processor information in registry
                              • Modifies data under HKEY_USERS
                              PID:1560
                            • 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
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:2952
                          • 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 AdjustPrivilegeToken
                            • Suspicious use of SetWindowsHookEx
                            PID:2256
                          • C:\Windows\system32\browser_broker.exe
                            C:\Windows\system32\browser_broker.exe -Embedding
                            1⤵
                            • Modifies Internet Explorer settings
                            PID:640
                          • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                            "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                            1⤵
                            • Modifies registry class
                            • Suspicious behavior: MapViewOfSection
                            • Suspicious use of SetWindowsHookEx
                            • Suspicious use of WriteProcessMemory
                            PID:4236
                          • 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
                            • Suspicious use of AdjustPrivilegeToken
                            PID:4300
                          • 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:4596
                          • 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:4960
                          • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
                            "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
                            1⤵
                            • Modifies registry class
                            • Suspicious use of AdjustPrivilegeToken
                            PID:5056

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/60-165-0x000001A632E70000-0x000001A632EE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/60-274-0x000001A632F50000-0x000001A632FC1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1004-266-0x000002B9BCE40000-0x000002B9BCEB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1004-141-0x000002B9BC760000-0x000002B9BC7D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1104-159-0x000001B9CFF40000-0x000001B9CFFB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1104-272-0x000001B9CFFB0000-0x000001B9D0021000-memory.dmp

                            Filesize

                            452KB

                          • memory/1192-258-0x0000026A33E40000-0x0000026A33EB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1192-184-0x0000026A338D0000-0x0000026A33940000-memory.dmp

                            Filesize

                            448KB

                          • memory/1384-186-0x000001A847960000-0x000001A8479D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1384-260-0x000001A847F40000-0x000001A847FB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1428-253-0x0000021602CB0000-0x0000021602D21000-memory.dmp

                            Filesize

                            452KB

                          • memory/1428-170-0x0000021602700000-0x0000021602770000-memory.dmp

                            Filesize

                            448KB

                          • memory/1560-140-0x000001EC735D0000-0x000001EC73640000-memory.dmp

                            Filesize

                            448KB

                          • memory/1852-203-0x0000000000BE0000-0x0000000000BED000-memory.dmp

                            Filesize

                            52KB

                          • memory/1948-256-0x000001DA5CE20000-0x000001DA5CE91000-memory.dmp

                            Filesize

                            452KB

                          • memory/1948-182-0x000001DA5CD40000-0x000001DA5CDB0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2256-217-0x00000213A6820000-0x00000213A6830000-memory.dmp

                            Filesize

                            64KB

                          • memory/2520-268-0x0000025AA43A0000-0x0000025AA4411000-memory.dmp

                            Filesize

                            452KB

                          • memory/2520-149-0x0000025AA3D70000-0x0000025AA3DE0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2536-270-0x00000203BD120000-0x00000203BD191000-memory.dmp

                            Filesize

                            452KB

                          • memory/2536-154-0x00000203BD040000-0x00000203BD0B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2736-143-0x00000000003F0000-0x00000000003F1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2736-132-0x00000000003E0000-0x00000000003E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2736-136-0x0000000000710000-0x000000000072C000-memory.dmp

                            Filesize

                            112KB

                          • memory/2736-148-0x0000000000700000-0x0000000000702000-memory.dmp

                            Filesize

                            8KB

                          • memory/2736-127-0x00000000002B0000-0x00000000002B1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2780-264-0x0000026566210000-0x0000026566281000-memory.dmp

                            Filesize

                            452KB

                          • memory/2780-190-0x0000026565C50000-0x0000026565CC0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2788-262-0x0000015820840000-0x00000158208B1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2788-188-0x000001581FED0000-0x000001581FF40000-memory.dmp

                            Filesize

                            448KB

                          • memory/2824-254-0x00000253EB1B0000-0x00000253EB221000-memory.dmp

                            Filesize

                            452KB

                          • memory/2824-160-0x00000253EAE00000-0x00000253EAE70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2912-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2952-213-0x0000012414790000-0x0000012414895000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/2952-214-0x0000012411FD0000-0x0000012411FEB000-memory.dmp

                            Filesize

                            108KB

                          • memory/2952-210-0x0000012412170000-0x00000124121E1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2952-209-0x0000012411E50000-0x0000012411E9B000-memory.dmp

                            Filesize

                            300KB

                          • memory/3092-144-0x000002D05A5B0000-0x000002D05A5FB000-memory.dmp

                            Filesize

                            300KB

                          • memory/3092-150-0x000002D05A7C0000-0x000002D05A830000-memory.dmp

                            Filesize

                            448KB

                          • memory/3156-142-0x0000000004A60000-0x0000000004ABC000-memory.dmp

                            Filesize

                            368KB

                          • memory/3156-138-0x00000000048FC000-0x00000000049FD000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/3492-193-0x0000000000400000-0x000000000042B000-memory.dmp

                            Filesize

                            172KB

                          • memory/4156-228-0x0000000003850000-0x0000000003860000-memory.dmp

                            Filesize

                            64KB