Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/06/2024, 01:46

General

  • Target
    b030885b9e94a1bc5bbe4d8108f44a7db71e9d7c8add3e5ae51342c332429740.exe
  • Size 1.5MB
  • Sample240614-b65azavanm
  • SHA256 b030885b9e94a1bc5bbe4d8108f44a7db71e9d7c8add3e5ae51342c332429740
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 5 IoCs
  • Process spawned unexpected child process 15 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Detects executables containing bas64 encoded gzip files 2 IoCs
  • Checks computer location settings 2 TTPs 5 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 5 IoCs
  • Adds Run key to start application 2 TTPs 10 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 15 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry class 5 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\b030885b9e94a1bc5bbe4d8108f44a7db71e9d7c8add3e5ae51342c332429740.exe
    "C:\Users\Admin\AppData\Local\Temp\b030885b9e94a1bc5bbe4d8108f44a7db71e9d7c8add3e5ae51342c332429740.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2900
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\0xtrheck\0xtrheck.cmdline"
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3368
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES4EEB.tmp" "c:\Windows\System32\CSCC4E2E6D31A5B43A5AC10B552DD8BDB6C.TMP"
        3⤵
          PID:3568
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\QPFZEBcOgW.bat"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3668
        • C:\Windows\system32\chcp.com
          chcp 65001
          3⤵
            PID:5008
          • C:\Windows\system32\w32tm.exe
            w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
            3⤵
              PID:4624
            • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe
              "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe"
              3⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Modifies registry class
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:556
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\EEIicgEf1j.bat"
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:1796
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  5⤵
                    PID:4336
                  • C:\Windows\system32\PING.EXE
                    ping -n 10 localhost
                    5⤵
                    • Runs ping.exe
                    PID:4344
                  • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe
                    "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe"
                    5⤵
                    • Checks computer location settings
                    • Executes dropped EXE
                    • Modifies registry class
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    PID:2688
                    • C:\Windows\System32\cmd.exe
                      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\yIUjElxALT.bat"
                      6⤵
                      • Suspicious use of WriteProcessMemory
                      PID:2044
                      • C:\Windows\system32\chcp.com
                        chcp 65001
                        7⤵
                          PID:4008
                        • C:\Windows\system32\w32tm.exe
                          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                          7⤵
                            PID:2344
                          • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe
                            "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe"
                            7⤵
                            • Checks computer location settings
                            • Executes dropped EXE
                            • Modifies registry class
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:3780
                            • C:\Windows\System32\cmd.exe
                              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\9cbgcnWXuE.bat"
                              8⤵
                              • Suspicious use of WriteProcessMemory
                              PID:2016
                              • C:\Windows\system32\chcp.com
                                chcp 65001
                                9⤵
                                  PID:4148
                                • C:\Windows\system32\PING.EXE
                                  ping -n 10 localhost
                                  9⤵
                                  • Runs ping.exe
                                  PID:1628
                                • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe
                                  "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe"
                                  9⤵
                                  • Checks computer location settings
                                  • Executes dropped EXE
                                  • Modifies registry class
                                  • Suspicious use of AdjustPrivilegeToken
                                  • Suspicious use of WriteProcessMemory
                                  PID:1448
                                  • C:\Windows\System32\cmd.exe
                                    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\bviytIjYVg.bat"
                                    10⤵
                                    • Suspicious use of WriteProcessMemory
                                    PID:3752
                                    • C:\Windows\system32\chcp.com
                                      chcp 65001
                                      11⤵
                                        PID:1568
                                      • C:\Windows\system32\w32tm.exe
                                        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                                        11⤵
                                          PID:2876
                                        • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe
                                          "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe"
                                          11⤵
                                          • Executes dropped EXE
                                          • Suspicious use of AdjustPrivilegeToken
                                          PID:3736
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Program Files\Java\jdk-1.8\include\win32\winlogon.exe'" /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:4876
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\include\win32\winlogon.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:4724
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Program Files\Java\jdk-1.8\include\win32\winlogon.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:1800
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 6 /tr "'C:\Users\Public\Documents\unsecapp.exe'" /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:1472
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Users\Public\Documents\unsecapp.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:2240
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 6 /tr "'C:\Users\Public\Documents\unsecapp.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:2632
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Internet Explorer\SIGNUP\RuntimeBroker.exe'" /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:3384
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\SIGNUP\RuntimeBroker.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:2804
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Internet Explorer\SIGNUP\RuntimeBroker.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:1688
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:2500
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:4832
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:3644
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe'" /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:4740
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:468
                    • C:\Windows\system32\schtasks.exe
                      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe'" /rl HIGHEST /f
                      1⤵
                      • Process spawned unexpected child process
                      • Creates scheduled task(s)
                      PID:4544

                    Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

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                          Downloads

                          StartMenuExperienceHost.exe

                          • Path C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\StartMenuExperienceHost.exe
                          • Size 1.5MB
                          • SHA256 b030885b9e94a1bc5bbe4d8108f44a7db71e9d7c8add3e5ae51342c332429740
                          • MD5 SHA1 SHA512 SSDEEP

                          StartMenuExperienceHost.exe.log

                          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\StartMenuExperienceHost.exe.log
                          • Size 1KB
                          • SHA256 eb70c64ae99d14ac2588b7a84854fbf3c420532d7fe4dfd49c7b5a70c869943a
                          • MD5 SHA1 SHA512

                          9cbgcnWXuE.bat

                          • Path C:\Users\Admin\AppData\Local\Temp\9cbgcnWXuE.bat
                          • Size 229B
                          • SHA256 a326fc9fa1f9a154c5b688ec8b73fc0c269743ec813c9b6379e815003c59b1f6
                          • MD5 SHA1 SHA512

                          EEIicgEf1j.bat

                          • Path C:\Users\Admin\AppData\Local\Temp\EEIicgEf1j.bat
                          • Size 229B
                          • SHA256 936aa644bc159a4499f395e3f54c159d017b0d4dba15268139229bb966e5bd59
                          • MD5 SHA1 SHA512

                          QPFZEBcOgW.bat

                          • Path C:\Users\Admin\AppData\Local\Temp\QPFZEBcOgW.bat
                          • Size 277B
                          • SHA256 e8bccaa767e24c55b9c764e99983888ff6a89157586a3f64eb4acf611d5ee240
                          • MD5 SHA1 SHA512

                          RES4EEB.tmp

                          • Path C:\Users\Admin\AppData\Local\Temp\RES4EEB.tmp
                          • Size 1KB
                          • SHA256 0f3d3e1448bc3023e6d50a267c91c4a3e615064015bef083c71bbc3edcf6b294
                          • MD5 SHA1 SHA512

                          bviytIjYVg.bat

                          • Path C:\Users\Admin\AppData\Local\Temp\bviytIjYVg.bat
                          • Size 277B
                          • SHA256 1b0fcd097059370c76eb84cf4210fab4d4c393f2c1111ce921c09b600fa89d2d
                          • MD5 SHA1 SHA512

                          yIUjElxALT.bat

                          • Path C:\Users\Admin\AppData\Local\Temp\yIUjElxALT.bat
                          • Size 277B
                          • SHA256 325f63c8ec106658b759b382dc39e80716c77128fde8f8dd162a434f97798401
                          • MD5 SHA1 SHA512

                          0xtrheck.0.cs

                          • Path \??\c:\Users\Admin\AppData\Local\Temp\0xtrheck\0xtrheck.0.cs
                          • Size 388B
                          • SHA256 903c4ff3465dc9240f392a86c1214b6f50e2dc39f6bcd7e8b6c3a65330cb2464
                          • MD5 SHA1 SHA512

                          0xtrheck.cmdline

                          • Path \??\c:\Users\Admin\AppData\Local\Temp\0xtrheck\0xtrheck.cmdline
                          • Size 235B
                          • SHA256 a07b2870bdb053357feac58ec0d69488b9dcb5a000b0af2ef766c3bd82cc20f6
                          • MD5 SHA1 SHA512

                          CSCC4E2E6D31A5B43A5AC10B552DD8BDB6C.TMP

                          • Path \??\c:\Windows\System32\CSCC4E2E6D31A5B43A5AC10B552DD8BDB6C.TMP
                          • Size 1KB
                          • SHA256 24e424d4d217bc9b5e76e0867e2715aabb09d7e49ab1e716eefb40d718e4f135
                          • MD5 SHA1 SHA512

                          memory/556-81-0x000000001B0F0000-0x000000001B0F8000-memory.dmp

                          memory/556-71-0x000000001BD50000-0x000000001BE52000-memory.dmp

                          memory/556-82-0x000000001BD50000-0x000000001BE52000-memory.dmp

                          memory/556-80-0x000000001B490000-0x000000001B539000-memory.dmp

                          memory/556-69-0x000000001B490000-0x000000001B539000-memory.dmp

                          memory/556-70-0x000000001B0F0000-0x000000001B0F8000-memory.dmp

                          memory/1448-149-0x000000001B2C0000-0x000000001B369000-memory.dmp

                          memory/1448-151-0x000000001BB80000-0x000000001BC82000-memory.dmp

                          memory/1448-150-0x000000001AF30000-0x000000001AF38000-memory.dmp

                          memory/1448-160-0x000000001AF30000-0x000000001AF38000-memory.dmp

                          memory/1448-161-0x000000001BB80000-0x000000001BC82000-memory.dmp

                          memory/1448-159-0x000000001B2C0000-0x000000001B369000-memory.dmp

                          memory/2688-99-0x000000001BF60000-0x000000001C062000-memory.dmp

                          memory/2688-98-0x000000001B300000-0x000000001B308000-memory.dmp

                          memory/2688-97-0x000000001B6A0000-0x000000001B749000-memory.dmp

                          memory/2688-109-0x000000001BF60000-0x000000001C062000-memory.dmp

                          memory/2688-108-0x000000001B300000-0x000000001B308000-memory.dmp

                          memory/2688-107-0x000000001B6A0000-0x000000001B749000-memory.dmp

                          memory/2900-23-0x0000000001400000-0x000000000140E000-memory.dmp

                          memory/2900-10-0x00000000013B0000-0x00000000013BE000-memory.dmp

                          memory/2900-25-0x000000001B940000-0x000000001B98E000-memory.dmp

                          memory/2900-0-0x0000000000970000-0x0000000000AEA000-memory.dmp

                          memory/2900-21-0x00000000013F0000-0x0000000001400000-memory.dmp

                          memory/2900-19-0x00000000013D0000-0x00000000013E0000-memory.dmp

                          memory/2900-17-0x000000001BE20000-0x000000001C348000-memory.dmp

                          memory/2900-16-0x000000001B8D0000-0x000000001B8E2000-memory.dmp

                          memory/2900-1-0x00007FFA67CD0000-0x00007FFA67CF2000-memory.dmp

                          memory/2900-3-0x00000000013A0000-0x00000000013AE000-memory.dmp

                          memory/2900-5-0x0000000001410000-0x000000000142C000-memory.dmp

                          memory/2900-6-0x0000000002D50000-0x0000000002DA0000-memory.dmp

                          memory/2900-8-0x0000000001430000-0x0000000001448000-memory.dmp

                          memory/2900-53-0x000000001C550000-0x000000001C5F9000-memory.dmp

                          memory/2900-14-0x0000000002DC0000-0x0000000002DD6000-memory.dmp

                          memory/2900-12-0x0000000002DA0000-0x0000000002DB2000-memory.dmp

                          memory/3736-176-0x0000000002BE0000-0x0000000002BE8000-memory.dmp

                          memory/3736-175-0x000000001BB20000-0x000000001BBC9000-memory.dmp

                          memory/3780-133-0x000000001BD00000-0x000000001BDA9000-memory.dmp

                          memory/3780-135-0x000000001C5C0000-0x000000001C6C2000-memory.dmp

                          memory/3780-134-0x000000001B980000-0x000000001B988000-memory.dmp

                          memory/3780-124-0x000000001B980000-0x000000001B988000-memory.dmp

                          memory/3780-125-0x000000001C5C0000-0x000000001C6C2000-memory.dmp

                          memory/3780-123-0x000000001BD00000-0x000000001BDA9000-memory.dmp