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Analysis

  • max time kernel
    1801s
  • max time network
    1338s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    06-07-2021 17:53

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
  • 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 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:\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:3164
              • 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:3160
                • 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:2800
              • 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:3668
              • 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:4220
                • C:\Users\Admin\AppData\Local\Temp\is-0OLPH.tmp\Install.tmp
                  "C:\Users\Admin\AppData\Local\Temp\is-0OLPH.tmp\Install.tmp" /SL5="$401D2,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:4252
              • C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe
                "C:\Users\Admin\AppData\Local\Temp\RarSFX0\filee.exe"
                2⤵
                • Executes dropped EXE
                • Suspicious use of WriteProcessMemory
                PID:4748
                • 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:4848
                  • C:\Windows\SysWOW64\PING.EXE
                    ping 127.0.0.1
                    4⤵
                    • Runs ping.exe
                    PID:4896
              • 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:4124
              • 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:4288
                • 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:4240
                • 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:2152
                • 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:1496
                • 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:5040
            • \??\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:516
              • 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:8
              • 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:4432
            • 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: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⤵
                        • Modifies registry class
                        PID:60
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                        1⤵
                          PID:1004
                        • 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:5060
                        • C:\Windows\system32\browser_broker.exe
                          C:\Windows\system32\browser_broker.exe -Embedding
                          1⤵
                          • Modifies Internet Explorer settings
                          PID:5100
                        • 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:4132
                        • 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:4264
                        • 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:4896
                        • 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:4504
                        • 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:4692

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/8-146-0x00000272BFED0000-0x00000272BFF40000-memory.dmp

                          Filesize

                          448KB

                        • memory/60-178-0x000001A632E70000-0x000001A632EE0000-memory.dmp

                          Filesize

                          448KB

                        • memory/60-263-0x000001A632F50000-0x000001A632FC1000-memory.dmp

                          Filesize

                          452KB

                        • memory/516-133-0x000001DCF1900000-0x000001DCF1970000-memory.dmp

                          Filesize

                          448KB

                        • memory/1004-255-0x000002B9BCE40000-0x000002B9BCEB1000-memory.dmp

                          Filesize

                          452KB

                        • memory/1004-147-0x000002B9BC760000-0x000002B9BC7D0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1104-261-0x000001B9CFFB0000-0x000001B9D0021000-memory.dmp

                          Filesize

                          452KB

                        • memory/1104-176-0x000001B9CFF40000-0x000001B9CFFB0000-memory.dmp

                          Filesize

                          448KB

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

                          Filesize

                          448KB

                        • memory/1192-269-0x0000026A33E40000-0x0000026A33EB1000-memory.dmp

                          Filesize

                          452KB

                        • memory/1384-271-0x000001A847F40000-0x000001A847FB1000-memory.dmp

                          Filesize

                          452KB

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

                          Filesize

                          448KB

                        • memory/1428-265-0x0000021602CB0000-0x0000021602D21000-memory.dmp

                          Filesize

                          452KB

                        • memory/1428-180-0x0000021602700000-0x0000021602770000-memory.dmp

                          Filesize

                          448KB

                        • memory/1948-267-0x000001DA5CE20000-0x000001DA5CE91000-memory.dmp

                          Filesize

                          452KB

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

                          Filesize

                          448KB

                        • memory/2520-257-0x0000025AA43A0000-0x0000025AA4411000-memory.dmp

                          Filesize

                          452KB

                        • memory/2520-153-0x0000025AA3D70000-0x0000025AA3DE0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2536-259-0x00000203BD120000-0x00000203BD191000-memory.dmp

                          Filesize

                          452KB

                        • memory/2536-174-0x00000203BD040000-0x00000203BD0B0000-memory.dmp

                          Filesize

                          448KB

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

                          Filesize

                          448KB

                        • memory/2780-275-0x0000026566210000-0x0000026566281000-memory.dmp

                          Filesize

                          452KB

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

                          Filesize

                          448KB

                        • memory/2788-273-0x0000015820840000-0x00000158208B1000-memory.dmp

                          Filesize

                          452KB

                        • memory/2800-132-0x0000000004B3A000-0x0000000004C3B000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/2800-134-0x0000000004D90000-0x0000000004DEC000-memory.dmp

                          Filesize

                          368KB

                        • memory/2824-148-0x00000253EAE00000-0x00000253EAE70000-memory.dmp

                          Filesize

                          448KB

                        • memory/2824-138-0x00000253EA590000-0x00000253EA5DB000-memory.dmp

                          Filesize

                          300KB

                        • memory/2824-253-0x00000253EB1B0000-0x00000253EB221000-memory.dmp

                          Filesize

                          452KB

                        • memory/3668-139-0x0000000001120000-0x0000000001121000-memory.dmp

                          Filesize

                          4KB

                        • memory/3668-131-0x0000000001100000-0x000000000111C000-memory.dmp

                          Filesize

                          112KB

                        • memory/3668-154-0x000000001B900000-0x000000001B902000-memory.dmp

                          Filesize

                          8KB

                        • memory/3668-126-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

                          Filesize

                          4KB

                        • memory/3668-128-0x00000000010F0000-0x00000000010F1000-memory.dmp

                          Filesize

                          4KB

                        • memory/4124-226-0x0000000003710000-0x0000000003720000-memory.dmp

                          Filesize

                          64KB

                        • memory/4124-220-0x0000000003570000-0x0000000003580000-memory.dmp

                          Filesize

                          64KB

                        • memory/4220-193-0x0000000000400000-0x000000000042B000-memory.dmp

                          Filesize

                          172KB

                        • memory/4252-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                          Filesize

                          4KB

                        • memory/4432-203-0x00000190C6A10000-0x00000190C6A5C000-memory.dmp

                          Filesize

                          304KB

                        • memory/4432-204-0x00000190C6D00000-0x00000190C6D71000-memory.dmp

                          Filesize

                          452KB

                        • memory/4432-208-0x00000190C8530000-0x00000190C854B000-memory.dmp

                          Filesize

                          108KB

                        • memory/4432-207-0x00000190C9300000-0x00000190C9405000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/4748-212-0x0000000002D00000-0x0000000002D0D000-memory.dmp

                          Filesize

                          52KB