Resubmissions

12-11-2024 01:29

241112-bwgrxs1gnf 10

08-07-2021 12:18

210708-8z6d5h8z2n 10

06-07-2021 17:53

210706-g6we6sa7sa 10

19-06-2021 18:17

210619-vr8bj2dzfn 10

17-06-2021 21:39

210617-a9cvlnmrbx 10

11-06-2021 17:26

210611-wvab1yw2tj 10

08-06-2021 06:47

210608-qrbpch3y46 10

08-06-2021 06:47

210608-64tndgm1ln 10

05-06-2021 18:40

210605-cd6qpr55sx 10

04-06-2021 11:56

210604-5c416rs3ns 10

Analysis

  • max time kernel
    1800s
  • max time network
    1444s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    05-06-2021 18:40

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 52 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 UserManager
    1⤵
      PID:1272
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
      1⤵
        PID:2696
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s WpnService
        1⤵
          PID:2688
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s Browser
          1⤵
            PID:2580
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
            1⤵
              PID:2408
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
              1⤵
              • Modifies registry class
              PID:2380
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1864
              • c:\windows\system32\svchost.exe
                c:\windows\system32\svchost.exe -k netsvcs -s SENS
                1⤵
                  PID:1388
                • c:\windows\system32\svchost.exe
                  c:\windows\system32\svchost.exe -k netsvcs -s Themes
                  1⤵
                    PID:1228
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                    1⤵
                      PID:1108
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                      1⤵
                        PID:1020
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                        1⤵
                          PID:348
                        • 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:3984
                          • 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:2320
                            • 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:4004
                          • 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:4080
                          • 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:1576
                            • C:\Users\Admin\AppData\Local\Temp\is-7SS6H.tmp\Install.tmp
                              "C:\Users\Admin\AppData\Local\Temp\is-7SS6H.tmp\Install.tmp" /SL5="$80086,235791,152064,C:\Users\Admin\AppData\Local\Temp\RarSFX0\Install.exe"
                              3⤵
                              • Executes dropped EXE
                              • Loads dropped DLL
                              PID:3392
                          • 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:2424
                            • 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:3576
                              • C:\Windows\SysWOW64\PING.EXE
                                ping 127.0.0.1
                                4⤵
                                • Runs ping.exe
                                PID:2868
                          • 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:4328
                          • 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: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
                              PID:4848
                            • 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:3220
                            • 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:3912
                            • 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:3940
                        • \??\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:2208
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k SystemNetworkService
                            2⤵
                            • Checks processor information in registry
                            • Modifies data under HKEY_USERS
                            PID:3252
                          • 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:2492
                        • 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:4100
                        • C:\Windows\system32\browser_broker.exe
                          C:\Windows\system32\browser_broker.exe -Embedding
                          1⤵
                          • Modifies Internet Explorer settings
                          PID:4140
                        • 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:4416
                        • 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:4492
                        • 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:3816
                        • 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:4684
                        • 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:4364

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/348-145-0x00000227A5F90000-0x00000227A6000000-memory.dmp

                          Filesize

                          448KB

                        • memory/348-138-0x00000227A5E00000-0x00000227A5E4B000-memory.dmp

                          Filesize

                          300KB

                        • memory/348-255-0x00000227A64A0000-0x00000227A6510000-memory.dmp

                          Filesize

                          448KB

                        • memory/1020-178-0x000002B851100000-0x000002B851170000-memory.dmp

                          Filesize

                          448KB

                        • memory/1020-263-0x000002B851640000-0x000002B8516B0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1108-161-0x000001DAA5910000-0x000001DAA5980000-memory.dmp

                          Filesize

                          448KB

                        • memory/1108-261-0x000001DAA6070000-0x000001DAA60E0000-memory.dmp

                          Filesize

                          448KB

                        • memory/1228-184-0x00000201DA510000-0x00000201DA580000-memory.dmp

                          Filesize

                          448KB

                        • memory/1228-269-0x00000201DA620000-0x00000201DA690000-memory.dmp

                          Filesize

                          448KB

                        • memory/1272-186-0x0000018A9E0C0000-0x0000018A9E130000-memory.dmp

                          Filesize

                          448KB

                        • memory/1272-271-0x0000018A9E4E0000-0x0000018A9E550000-memory.dmp

                          Filesize

                          448KB

                        • memory/1388-265-0x000001F84F1B0000-0x000001F84F220000-memory.dmp

                          Filesize

                          448KB

                        • memory/1388-180-0x000001F84EB20000-0x000001F84EB90000-memory.dmp

                          Filesize

                          448KB

                        • memory/1576-193-0x0000000000400000-0x000000000042B000-memory.dmp

                          Filesize

                          172KB

                        • memory/1864-267-0x0000029DB5790000-0x0000029DB5800000-memory.dmp

                          Filesize

                          448KB

                        • memory/1864-182-0x0000029DB56B0000-0x0000029DB5720000-memory.dmp

                          Filesize

                          448KB

                        • memory/2208-153-0x0000010CF7700000-0x0000010CF7770000-memory.dmp

                          Filesize

                          448KB

                        • memory/2380-156-0x0000018472F60000-0x0000018472FD0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2380-259-0x00000184735B0000-0x0000018473620000-memory.dmp

                          Filesize

                          448KB

                        • memory/2408-149-0x0000017F63070000-0x0000017F630E0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2408-257-0x0000017F630E0000-0x0000017F63150000-memory.dmp

                          Filesize

                          448KB

                        • memory/2424-203-0x00000000007F0000-0x00000000007FD000-memory.dmp

                          Filesize

                          52KB

                        • memory/2492-228-0x0000019D16000000-0x0000019D16070000-memory.dmp

                          Filesize

                          448KB

                        • memory/2492-227-0x0000019D15D30000-0x0000019D15D7B000-memory.dmp

                          Filesize

                          300KB

                        • memory/2492-250-0x0000019D178C0000-0x0000019D178DB000-memory.dmp

                          Filesize

                          108KB

                        • memory/2492-249-0x0000019D18600000-0x0000019D18705000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/2580-277-0x000001B714220000-0x000001B714290000-memory.dmp

                          Filesize

                          448KB

                        • memory/2580-162-0x000001B713E00000-0x000001B713E70000-memory.dmp

                          Filesize

                          448KB

                        • memory/2580-253-0x000001B7141B0000-0x000001B714220000-memory.dmp

                          Filesize

                          448KB

                        • memory/2688-275-0x0000018AA5DB0000-0x0000018AA5E20000-memory.dmp

                          Filesize

                          448KB

                        • memory/2688-190-0x0000018AA5A00000-0x0000018AA5A70000-memory.dmp

                          Filesize

                          448KB

                        • memory/2696-188-0x000001371A060000-0x000001371A0D0000-memory.dmp

                          Filesize

                          448KB

                        • memory/2696-273-0x000001371A160000-0x000001371A1D0000-memory.dmp

                          Filesize

                          448KB

                        • memory/3252-140-0x0000021E90C20000-0x0000021E90C90000-memory.dmp

                          Filesize

                          448KB

                        • memory/3392-199-0x00000000001E0000-0x00000000001E1000-memory.dmp

                          Filesize

                          4KB

                        • memory/4004-136-0x0000000004B8A000-0x0000000004C8B000-memory.dmp

                          Filesize

                          1.0MB

                        • memory/4004-143-0x0000000004C90000-0x0000000004CEC000-memory.dmp

                          Filesize

                          368KB

                        • memory/4080-128-0x0000000001480000-0x0000000001481000-memory.dmp

                          Filesize

                          4KB

                        • memory/4080-144-0x00000000014B0000-0x00000000014B2000-memory.dmp

                          Filesize

                          8KB

                        • memory/4080-141-0x00000000014C0000-0x00000000014C1000-memory.dmp

                          Filesize

                          4KB

                        • memory/4080-134-0x0000000001490000-0x00000000014AC000-memory.dmp

                          Filesize

                          112KB

                        • memory/4080-126-0x0000000000D80000-0x0000000000D81000-memory.dmp

                          Filesize

                          4KB

                        • memory/4328-220-0x00000000036F0000-0x0000000003700000-memory.dmp

                          Filesize

                          64KB

                        • memory/4328-214-0x0000000003550000-0x0000000003560000-memory.dmp

                          Filesize

                          64KB