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08-07-2021 12:18

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08-06-2021 06:47

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Analysis

  • max time kernel
    1799s
  • max time network
    1444s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    08-07-2021 12:18

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:356
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
      1⤵
        PID:512
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Themes
        1⤵
          PID:1180
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s SENS
          1⤵
            PID:1448
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s UserManager
            1⤵
              PID:1340
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
              1⤵
                PID:1128
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
                1⤵
                  PID:1924
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
                  1⤵
                    PID:2380
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
                    1⤵
                      PID:2400
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Browser
                      1⤵
                        PID:2608
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
                        1⤵
                          PID:2708
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s WpnService
                          1⤵
                            PID:2720
                          • 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:4440
                            • 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:4876
                              • 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:5040
                            • 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:5088
                            • 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:1860
                              • C:\Users\Admin\AppData\Local\Temp\is-CF3M4.tmp\Install.tmp
                                "C:\Users\Admin\AppData\Local\Temp\is-CF3M4.tmp\Install.tmp" /SL5="$50054,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                                3⤵
                                • Executes dropped EXE
                                • Loads dropped DLL
                                PID:2108
                            • 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:2656
                              • 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:3664
                                • C:\Windows\SysWOW64\PING.EXE
                                  ping 127.0.0.1
                                  4⤵
                                  • Runs ping.exe
                                  PID:1356
                            • 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:1020
                            • 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:2660
                              • 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:3196
                              • 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:4416
                              • 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:1536
                              • 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:1328
                          • \??\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:4536
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Checks processor information in registry
                              • Modifies data under HKEY_USERS
                              PID:3260
                            • 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
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:5024
                          • 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:1152
                          • C:\Windows\system32\browser_broker.exe
                            C:\Windows\system32\browser_broker.exe -Embedding
                            1⤵
                            • Modifies Internet Explorer settings
                            PID:2204
                          • 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:4208
                          • 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:1068
                          • 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:1084
                          • 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:3984
                          • 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:220

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • memory/356-169-0x0000024161460000-0x00000241614D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/356-255-0x0000024161580000-0x00000241615F1000-memory.dmp

                            Filesize

                            452KB

                          • memory/512-158-0x00000180604A0000-0x0000018060510000-memory.dmp

                            Filesize

                            448KB

                          • memory/512-263-0x0000018060510000-0x0000018060581000-memory.dmp

                            Filesize

                            452KB

                          • memory/1020-223-0x0000000003710000-0x0000000003720000-memory.dmp

                            Filesize

                            64KB

                          • memory/1020-217-0x0000000003570000-0x0000000003580000-memory.dmp

                            Filesize

                            64KB

                          • memory/1128-152-0x0000024F009E0000-0x0000024F00A50000-memory.dmp

                            Filesize

                            448KB

                          • memory/1128-261-0x0000024F00AC0000-0x0000024F00B31000-memory.dmp

                            Filesize

                            452KB

                          • memory/1128-147-0x0000024F00280000-0x0000024F002CB000-memory.dmp

                            Filesize

                            300KB

                          • memory/1180-269-0x0000027FA3F40000-0x0000027FA3FB1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1180-177-0x0000027FA3960000-0x0000027FA39D0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1340-271-0x000002346B540000-0x000002346B5B1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1340-186-0x000002346AFD0000-0x000002346B040000-memory.dmp

                            Filesize

                            448KB

                          • memory/1448-165-0x0000020A26150000-0x0000020A261C0000-memory.dmp

                            Filesize

                            448KB

                          • memory/1448-265-0x0000020A26870000-0x0000020A268E1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1860-193-0x0000000000400000-0x000000000042B000-memory.dmp

                            Filesize

                            172KB

                          • memory/1924-267-0x00000208F1040000-0x00000208F10B1000-memory.dmp

                            Filesize

                            452KB

                          • memory/1924-170-0x00000208F0A60000-0x00000208F0AD0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2108-205-0x00000000001E0000-0x00000000001E1000-memory.dmp

                            Filesize

                            4KB

                          • memory/2380-259-0x0000023CDD420000-0x0000023CDD491000-memory.dmp

                            Filesize

                            452KB

                          • memory/2380-146-0x0000023CDD340000-0x0000023CDD3B0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2400-176-0x0000021C9DCA0000-0x0000021C9DD10000-memory.dmp

                            Filesize

                            448KB

                          • memory/2400-257-0x0000021C9DF00000-0x0000021C9DF71000-memory.dmp

                            Filesize

                            452KB

                          • memory/2608-159-0x00000214421D0000-0x0000021442240000-memory.dmp

                            Filesize

                            448KB

                          • memory/2608-253-0x0000021442740000-0x00000214427B1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2656-201-0x0000000000CC0000-0x0000000000CCD000-memory.dmp

                            Filesize

                            52KB

                          • memory/2708-273-0x0000023398B30000-0x0000023398BA1000-memory.dmp

                            Filesize

                            452KB

                          • memory/2708-188-0x0000023397E60000-0x0000023397ED0000-memory.dmp

                            Filesize

                            448KB

                          • memory/2720-275-0x000001B452990000-0x000001B452A01000-memory.dmp

                            Filesize

                            452KB

                          • memory/2720-190-0x000001B452570000-0x000001B4525E0000-memory.dmp

                            Filesize

                            448KB

                          • memory/3260-162-0x0000014D67F80000-0x0000014D67FF0000-memory.dmp

                            Filesize

                            448KB

                          • memory/4536-151-0x000001A833380000-0x000001A8333F0000-memory.dmp

                            Filesize

                            448KB

                          • memory/5024-249-0x00000256A9B00000-0x00000256A9C05000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/5024-214-0x00000256A7150000-0x00000256A719C000-memory.dmp

                            Filesize

                            304KB

                          • memory/5024-215-0x00000256A7400000-0x00000256A7471000-memory.dmp

                            Filesize

                            452KB

                          • memory/5024-250-0x00000256A8C70000-0x00000256A8C8B000-memory.dmp

                            Filesize

                            108KB

                          • memory/5040-145-0x0000000000F60000-0x0000000000FBC000-memory.dmp

                            Filesize

                            368KB

                          • memory/5040-143-0x0000000000A75000-0x0000000000B76000-memory.dmp

                            Filesize

                            1.0MB

                          • memory/5088-138-0x0000000000850000-0x0000000000851000-memory.dmp

                            Filesize

                            4KB

                          • memory/5088-133-0x0000000000830000-0x000000000084C000-memory.dmp

                            Filesize

                            112KB

                          • memory/5088-130-0x0000000000820000-0x0000000000821000-memory.dmp

                            Filesize

                            4KB

                          • memory/5088-126-0x0000000000110000-0x0000000000111000-memory.dmp

                            Filesize

                            4KB

                          • memory/5088-175-0x000000001AC10000-0x000000001AC12000-memory.dmp

                            Filesize

                            8KB