Overview

overview

10

Static

static

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windows10_x64

8

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windows10_x64

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windows7_x64

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10

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
    300s
  • max time network
    314s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    15-05-2021 10:18

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General

  • Target

    keygen-step-4d.exe

  • Size

    4.6MB

  • MD5

    563107b1df2a00f4ec868acd9e08a205

  • SHA1

    9cb9c91d66292f5317aa50d92e38834861e9c9b7

  • SHA256

    bf2bd257dde4921ce83c7c1303fafe7f9f81e53c2775d3c373ced482b22eb8a9

  • SHA512

    99a8d247fa435c4cd95be7bc64c7dd6e382371f3a3c160aac3995fd705e4fd3f6622c23784a4ae3457c87536347d15eda3f08aa616450778a99376df540d74d1

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies registry class 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 16 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k netsvcs -s WpnService
    1⤵
      PID:2808
    • c:\windows\system32\svchost.exe
      c:\windows\system32\svchost.exe -k netsvcs -s Winmgmt
      1⤵
        PID:2796
      • c:\windows\system32\svchost.exe
        c:\windows\system32\svchost.exe -k netsvcs -s Browser
        1⤵
          PID:2720
        • c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s IKEEXT
          1⤵
            PID:2556
          • c:\windows\system32\svchost.exe
            c:\windows\system32\svchost.exe -k netsvcs -s LanmanServer
            1⤵
              PID:2544
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k netsvcs -s ShellHWDetection
              1⤵
                PID:1956
              • 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 Themes
                  1⤵
                    PID:1244
                  • c:\windows\system32\svchost.exe
                    c:\windows\system32\svchost.exe -k netsvcs -s UserManager
                    1⤵
                      PID:1236
                    • c:\windows\system32\svchost.exe
                      c:\windows\system32\svchost.exe -k netsvcs -s ProfSvc
                      1⤵
                        PID:1076
                      • c:\windows\system32\svchost.exe
                        c:\windows\system32\svchost.exe -k netsvcs -s Schedule
                        1⤵
                          PID:396
                        • c:\windows\system32\svchost.exe
                          c:\windows\system32\svchost.exe -k netsvcs -s gpsvc
                          1⤵
                            PID:336
                          • C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe
                            "C:\Users\Admin\AppData\Local\Temp\keygen-step-4d.exe"
                            1⤵
                            • Suspicious use of WriteProcessMemory
                            PID:808
                            • 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:3720
                              • 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:580
                            • 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:3652
                              • C:\Windows\system32\WerFault.exe
                                C:\Windows\system32\WerFault.exe -u -p 3652 -s 1316
                                3⤵
                                • Program crash
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2204
                          • \??\c:\windows\system32\svchost.exe
                            c:\windows\system32\svchost.exe -k netsvcs -s BITS
                            1⤵
                            • Suspicious use of SetThreadContext
                            • Modifies registry class
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:380
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k SystemNetworkService
                              2⤵
                              • Modifies registry class
                              PID:2300

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          • memory/336-133-0x0000023F01260000-0x0000023F012AB000-memory.dmp

                            Filesize

                            300KB

                            Download

                          • memory/336-136-0x0000023F01370000-0x0000023F013E0000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/380-142-0x00000277701B0000-0x0000027770220000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/380-124-0x000002776FE70000-0x000002776FE72000-memory.dmp

                            Filesize

                            8KB

                            Download

                          • memory/396-169-0x000001DB94B00000-0x000001DB94B70000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/580-130-0x0000000002FCC000-0x00000000030CD000-memory.dmp

                            Filesize

                            1.0MB

                            Download

                          • memory/580-135-0x00000000030D0000-0x000000000312C000-memory.dmp

                            Filesize

                            368KB

                            Download

                          • memory/1076-152-0x0000027F4D210000-0x0000027F4D280000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/1236-177-0x000001A26CBD0000-0x000001A26CC40000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/1244-175-0x000001F3F3780000-0x000001F3F37F0000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/1420-171-0x000001B7D7840000-0x000001B7D78B0000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/1956-173-0x00000193178B0000-0x0000019317920000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/2300-131-0x00000285FAE00000-0x00000285FAE70000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/2544-147-0x0000024A918B0000-0x0000024A91920000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/2556-141-0x000001F4E30B0000-0x000001F4E3120000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/2720-153-0x0000012783000000-0x0000012783070000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/2796-179-0x000002246ED40000-0x000002246EDB0000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/2808-181-0x0000025A2D100000-0x0000025A2D170000-memory.dmp

                            Filesize

                            448KB

                            Download

                          • memory/3652-185-0x0000000000820000-0x0000000000821000-memory.dmp

                            Filesize

                            4KB

                            Download

                          • memory/3652-187-0x0000000000C50000-0x0000000000C51000-memory.dmp

                            Filesize

                            4KB

                            Download

                          • memory/3652-188-0x0000000001050000-0x000000000106C000-memory.dmp

                            Filesize

                            112KB

                            Download

                          • memory/3652-189-0x0000000000C60000-0x0000000000C61000-memory.dmp

                            Filesize

                            4KB

                            Download

                          • memory/3652-190-0x000000001B3A0000-0x000000001B3A2000-memory.dmp

                            Filesize

                            8KB

                            Download