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Analysis

  • max time kernel
    1800s
  • max time network
    1447s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    19-06-2021 18:17

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 gpsvc
    1⤵
      PID:1008
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s SENS
      1⤵
        PID:1420
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
        1⤵
          PID:2528
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s WpnService
          1⤵
            PID:2800
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
            1⤵
              PID:2780
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s Browser
              1⤵
                PID:2696
              • 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 ShellHWDetection
                  1⤵
                    PID:1948
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                    1⤵
                      PID:1412
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Themes
                      1⤵
                        PID:1176
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                        1⤵
                          PID:1140
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                          1⤵
                            PID:1084
                          • 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:3560
                            • 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
                                • Modifies registry class
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                • Suspicious use of WriteProcessMemory
                                PID:3484
                            • 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:3828
                            • 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:3496
                              • C:\Users\Admin\AppData\Local\Temp\is-UEJG7.tmp\Install.tmp
                                "C:\Users\Admin\AppData\Local\Temp\is-UEJG7.tmp\Install.tmp" /SL5="$60056,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                                3⤵
                                • Executes dropped EXE
                                • Loads dropped DLL
                                PID:216
                            • 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:1108
                              • 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:2336
                                • C:\Windows\SysWOW64\PING.EXE
                                  ping 127.0.0.1
                                  4⤵
                                  • Runs ping.exe
                                  PID:3444
                            • 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:4440
                            • 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:4632
                              • 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:3712
                              • 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:5048
                              • 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:3280
                              • 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:3544
                          • \??\c:\windows\system32\svchost.exe
                            c:\windows\system32\svchost.exe -k netsvcs -s BITS
                            1⤵
                            • Suspicious use of SetThreadContext
                            • Modifies data under HKEY_USERS
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:3700
                            • 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:3124
                            • 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:4708
                          • 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:4208
                          • C:\Windows\system32\browser_broker.exe
                            C:\Windows\system32\browser_broker.exe -Embedding
                            1⤵
                            • Modifies Internet Explorer settings
                            PID:4252
                          • 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:4524
                          • 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:4644
                          • 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:4984
                          • 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:4696
                          • 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/216-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/1008-264-0x00000196C6940000-0x00000196C69B1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1008-141-0x00000196C6810000-0x00000196C6880000-memory.dmp

                            Filesize

                            448KB

                          • memory/1084-253-0x0000022C8DF90000-0x0000022C8E001000-memory.dmp

                            Filesize

                            452KB

                          • memory/1084-166-0x0000022C8DEB0000-0x0000022C8DF20000-memory.dmp

                            Filesize

                            448KB

                          • memory/1108-203-0x00000000010D0000-0x00000000010DD000-memory.dmp

                            Filesize

                            52KB

                          • memory/1140-159-0x0000026E3D4F0000-0x0000026E3D560000-memory.dmp

                            Filesize

                            448KB

                          • memory/1140-270-0x0000026E3DB40000-0x0000026E3DBB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1176-274-0x00000217A11B0000-0x00000217A1221000-memory.dmp

                            Filesize

                            452KB

                          • memory/1176-184-0x00000217A10D0000-0x00000217A1140000-memory.dmp

                            Filesize

                            448KB

                          • memory/1412-260-0x00000211C2690000-0x00000211C2701000-memory.dmp

                            Filesize

                            452KB

                          • memory/1412-186-0x00000211C2270000-0x00000211C22E0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1420-272-0x000002BC1B300000-0x000002BC1B371000-memory.dmp

                            Filesize

                            452KB

                          • memory/1420-180-0x000002BC1B0A0000-0x000002BC1B110000-memory.dmp

                            Filesize

                            448KB

                          • memory/1948-273-0x00000288ECD40000-0x00000288ECDB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1948-182-0x00000288EC7D0000-0x00000288EC840000-memory.dmp

                            Filesize

                            448KB

                          • memory/2528-144-0x0000019511A80000-0x0000019511ACB000-memory.dmp

                            Filesize

                            300KB

                          • memory/2528-147-0x0000019512270000-0x00000195122E0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2528-266-0x0000019512940000-0x00000195129B1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2536-154-0x0000020465E90000-0x0000020465F00000-memory.dmp

                            Filesize

                            448KB

                          • memory/2536-268-0x0000020466580000-0x00000204665F1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2696-157-0x000001617A770000-0x000001617A7E0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2696-257-0x000001617AB90000-0x000001617AC01000-memory.dmp

                            Filesize

                            452KB

                          • memory/2780-275-0x000002B7E0C40000-0x000002B7E0CB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2780-188-0x000002B7E0240000-0x000002B7E02B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2800-190-0x0000024037E00000-0x0000024037E70000-memory.dmp

                            Filesize

                            448KB

                          • memory/2800-262-0x0000024038220000-0x0000024038291000-memory.dmp

                            Filesize

                            452KB

                          • memory/3124-161-0x0000023858140000-0x00000238581B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3484-142-0x00000000049A0000-0x00000000049FC000-memory.dmp

                            Filesize

                            368KB

                          • memory/3484-140-0x0000000002E00000-0x0000000002F4A000-memory.dmp

                            Filesize

                            1.3MB

                          • memory/3496-193-0x0000000000400000-0x000000000042B000-memory.dmp

                            Filesize

                            172KB

                          • memory/3700-148-0x0000022E5B8A0000-0x0000022E5B910000-memory.dmp

                            Filesize

                            448KB

                          • memory/3828-130-0x00000000012B0000-0x00000000012B1000-memory.dmp

                            Filesize

                            4KB

                          • memory/3828-165-0x0000000002D30000-0x0000000002D32000-memory.dmp

                            Filesize

                            8KB

                          • memory/3828-139-0x0000000002B80000-0x0000000002B81000-memory.dmp

                            Filesize

                            4KB

                          • memory/3828-134-0x0000000002CA0000-0x0000000002CBC000-memory.dmp

                            Filesize

                            112KB

                          • memory/3828-126-0x0000000000AA0000-0x0000000000AA1000-memory.dmp

                            Filesize

                            4KB

                          • memory/4440-220-0x0000000003710000-0x0000000003720000-memory.dmp

                            Filesize

                            64KB

                          • memory/4440-214-0x0000000003570000-0x0000000003580000-memory.dmp

                            Filesize

                            64KB

                          • memory/4708-250-0x000002015BD00000-0x000002015BE05000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/4708-228-0x0000020159570000-0x00000201595E1000-memory.dmp

                            Filesize

                            452KB

                          • memory/4708-251-0x000002015AD90000-0x000002015ADAB000-memory.dmp

                            Filesize

                            108KB

                          • memory/4708-227-0x0000020159270000-0x00000201592BC000-memory.dmp

                            Filesize

                            304KB