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Analysis

  • max time kernel
    1794s
  • max time network
    1447s
  • 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 51 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⤵
      PID:2780
    • 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 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 IKEEXT
            1⤵
              PID:2528
            • 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 SENS
                1⤵
                  PID:1420
                • 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⤵
                      • Modifies registry class
                      PID:1140
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                      1⤵
                        PID:1084
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                        1⤵
                        • Modifies registry class
                        PID:1008
                      • 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:3148
                        • 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:2572
                          • 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:196
                        • 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:200
                        • 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:2232
                          • C:\Users\Admin\AppData\Local\Temp\is-6JK57.tmp\Install.tmp
                            "C:\Users\Admin\AppData\Local\Temp\is-6JK57.tmp\Install.tmp" /SL5="$60086,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                            3⤵
                            • Executes dropped EXE
                            • Loads dropped DLL
                            PID:3576
                        • 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:3172
                          • 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:3124
                            • C:\Windows\SysWOW64\PING.EXE
                              ping 127.0.0.1
                              4⤵
                              • Runs ping.exe
                              PID:3716
                        • 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:4412
                        • 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:4600
                          • 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:4224
                          • 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:4944
                          • 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:4544
                          • 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:508
                      • \??\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:3088
                        • 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:3940
                        • 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:4676
                      • 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:4196
                      • C:\Windows\system32\browser_broker.exe
                        C:\Windows\system32\browser_broker.exe -Embedding
                        1⤵
                        • Modifies Internet Explorer settings
                        PID:4248
                      • 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:4500
                      • 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:4784

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • memory/196-160-0x000000000474C000-0x000000000484D000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/196-161-0x0000000001010000-0x000000000106C000-memory.dmp

                        Filesize

                        368KB

                      • memory/200-171-0x000000001B440000-0x000000001B442000-memory.dmp

                        Filesize

                        8KB

                      • memory/200-126-0x0000000000810000-0x0000000000811000-memory.dmp

                        Filesize

                        4KB

                      • memory/200-133-0x0000000000D10000-0x0000000000D11000-memory.dmp

                        Filesize

                        4KB

                      • memory/200-136-0x0000000000F20000-0x0000000000F3C000-memory.dmp

                        Filesize

                        112KB

                      • memory/200-140-0x0000000000F40000-0x0000000000F41000-memory.dmp

                        Filesize

                        4KB

                      • memory/1008-255-0x00000196C6940000-0x00000196C69B1000-memory.dmp

                        Filesize

                        452KB

                      • memory/1008-169-0x00000196C6810000-0x00000196C6880000-memory.dmp

                        Filesize

                        448KB

                      • memory/1084-178-0x0000022C8DEB0000-0x0000022C8DF20000-memory.dmp

                        Filesize

                        448KB

                      • memory/1084-263-0x0000022C8DF90000-0x0000022C8E001000-memory.dmp

                        Filesize

                        452KB

                      • memory/1140-176-0x0000026E3D4F0000-0x0000026E3D560000-memory.dmp

                        Filesize

                        448KB

                      • memory/1140-261-0x0000026E3DB40000-0x0000026E3DBB1000-memory.dmp

                        Filesize

                        452KB

                      • memory/1176-269-0x00000217A11B0000-0x00000217A1221000-memory.dmp

                        Filesize

                        452KB

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

                        Filesize

                        448KB

                      • memory/1412-271-0x00000211C2690000-0x00000211C2701000-memory.dmp

                        Filesize

                        452KB

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

                        Filesize

                        448KB

                      • memory/1420-265-0x000002BC1B300000-0x000002BC1B371000-memory.dmp

                        Filesize

                        452KB

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

                        Filesize

                        448KB

                      • memory/1948-267-0x00000288ECD40000-0x00000288ECDB1000-memory.dmp

                        Filesize

                        452KB

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

                        Filesize

                        448KB

                      • memory/2232-193-0x0000000000400000-0x000000000042B000-memory.dmp

                        Filesize

                        172KB

                      • memory/2528-257-0x0000019512940000-0x00000195129B1000-memory.dmp

                        Filesize

                        452KB

                      • memory/2528-172-0x0000019512270000-0x00000195122E0000-memory.dmp

                        Filesize

                        448KB

                      • memory/2536-174-0x0000020465E90000-0x0000020465F00000-memory.dmp

                        Filesize

                        448KB

                      • memory/2536-259-0x0000020466580000-0x00000204665F1000-memory.dmp

                        Filesize

                        452KB

                      • memory/2696-277-0x000001617AC80000-0x000001617ACF1000-memory.dmp

                        Filesize

                        452KB

                      • memory/2696-251-0x000001617AB90000-0x000001617AC01000-memory.dmp

                        Filesize

                        452KB

                      • memory/2696-166-0x000001617A770000-0x000001617A7E0000-memory.dmp

                        Filesize

                        448KB

                      • memory/2780-273-0x000002B7E0C40000-0x000002B7E0CB1000-memory.dmp

                        Filesize

                        452KB

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

                        Filesize

                        448KB

                      • memory/2800-275-0x0000024038220000-0x0000024038291000-memory.dmp

                        Filesize

                        452KB

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

                        Filesize

                        448KB

                      • memory/3088-163-0x000001DA56330000-0x000001DA563A0000-memory.dmp

                        Filesize

                        448KB

                      • memory/3088-162-0x000001DA56270000-0x000001DA562BB000-memory.dmp

                        Filesize

                        300KB

                      • memory/3172-203-0x0000000000EA0000-0x0000000000EAD000-memory.dmp

                        Filesize

                        52KB

                      • memory/3576-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                        Filesize

                        4KB

                      • memory/3940-167-0x00000129514D0000-0x0000012951540000-memory.dmp

                        Filesize

                        448KB

                      • memory/4412-220-0x00000000038F0000-0x0000000003900000-memory.dmp

                        Filesize

                        64KB

                      • memory/4412-212-0x00000000036F0000-0x0000000003700000-memory.dmp

                        Filesize

                        64KB

                      • memory/4676-246-0x00000299B9400000-0x00000299B9505000-memory.dmp

                        Filesize

                        1.0MB

                      • memory/4676-223-0x00000299B6A00000-0x00000299B6A4B000-memory.dmp

                        Filesize

                        300KB

                      • memory/4676-226-0x00000299B6D00000-0x00000299B6D71000-memory.dmp

                        Filesize

                        452KB

                      • memory/4676-247-0x00000299B85B0000-0x00000299B85CB000-memory.dmp

                        Filesize

                        108KB