Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/01/2023, 19:10

General

  • Target
    333bdb430f49f558e78ccf6e759c9da4.exe
  • Size 3.7MB
  • Sample230123-xvertseh66
  • SHA256 2a928111da98db071d4e02e581f00626c3b9bd6fd7c5c46f04367a633eee91f2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Blocklisted process makes network request 3 IoCs
  • Sets DLL path for service in the registry 2 TTPs 2 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 55 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\333bdb430f49f558e78ccf6e759c9da4.exe
    "C:\Users\Admin\AppData\Local\Temp\333bdb430f49f558e78ccf6e759c9da4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\Athusdiuuhasd.dll,start
      2⤵
      • Blocklisted process makes network request
      • Sets DLL path for service in the registry
      • Sets service image path in registry
      • Loads dropped DLL
      • Accesses Microsoft Outlook accounts
      • Accesses Microsoft Outlook profiles
      • Suspicious use of SetThreadContext
      • Drops file in Program Files directory
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:3740
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\system32\rundll32.exe" "C:\Windows\system32\shell32.dll",#61 22569
        3⤵
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        PID:5020
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
        3⤵
          PID:1652
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
          3⤵
            PID:3472
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
            3⤵
              PID:4352
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /tn \Microsoft\Windows\Wininet\CacheTask
              3⤵
                PID:4040
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /End /tn \Microsoft\Windows\Wininet\CacheTask
                3⤵
                  PID:4924
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3368 -s 480
                2⤵
                • Program crash
                PID:1152
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3368 -ip 3368
              1⤵
                PID:4824
              • C:\Windows\System32\rundll32.exe
                C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                1⤵
                  PID:2960
                • C:\Windows\SysWOW64\svchost.exe
                  C:\Windows\SysWOW64\svchost.exe -k LocalService
                  1⤵
                  • Loads dropped DLL
                  • Checks processor information in registry
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:1492
                  • C:\Windows\SysWOW64\rundll32.exe
                    "C:\Windows\system32\rundll32.exe" "c:\program files (x86)\windowspowershell\modules\sendforcomments.dll",g2IhSHNJ
                    2⤵
                    • Loads dropped DLL
                    PID:3684

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      sendforcomments.dll

                      • Path C:\Program Files (x86)\WindowsPowerShell\Modules\sendforcomments.dll
                      • Size 4.4MB
                      • SHA256 4e63ff027c55a6a969a14944c96522c3144f22ebf3abdaf8d0f466a5ce0fd271
                      • MD5 SHA1 SHA512 SSDEEP

                      sendforcomments.dll

                      • Path C:\Program Files (x86)\WindowsPowerShell\Modules\sendforcomments.dll
                      • Size 4.4MB
                      • SHA256 4e63ff027c55a6a969a14944c96522c3144f22ebf3abdaf8d0f466a5ce0fd271
                      • MD5 SHA1 SHA512 SSDEEP

                      sendforcomments.dll

                      • Path C:\Program Files (x86)\WindowsPowerShell\Modules\sendforcomments.dll
                      • Size 4.4MB
                      • SHA256 4e63ff027c55a6a969a14944c96522c3144f22ebf3abdaf8d0f466a5ce0fd271
                      • MD5 SHA1 SHA512 SSDEEP

                      DeploymentConfiguration.xml

                      • Path C:\ProgramData\{9E28791C-3404-AF21-DCFB-73457F26E971}\DeploymentConfiguration.xml
                      • Size 614B
                      • SHA256 d44d8ffc6e0261e32c4b5c77573a0daa0b4066d4e160c2cd5b5728199f63dfb4
                      • MD5 SHA1 SHA512

                      MicrosoftOffice2013BackupWin32.xml

                      • Path C:\ProgramData\{9E28791C-3404-AF21-DCFB-73457F26E971}\MicrosoftOffice2013BackupWin32.xml
                      • Size 12KB
                      • SHA256 3e0f02c2bd9c695d43963c9085e496ab42e7914bdc05f511d56442883c6c9687
                      • MD5 SHA1 SHA512 SSDEEP

                      Peyisotdssdawih.tmp

                      • Path C:\ProgramData\{9E28791C-3404-AF21-DCFB-73457F26E971}\Peyisotdssdawih.tmp
                      • Size 3.5MB
                      • SHA256 7eb53fe42a104da90f6577fffef9c7fc207038123373dde81eb1294b23f36457
                      • MD5 SHA1 SHA512 SSDEEP

                      resource.xml

                      • Path C:\ProgramData\{9E28791C-3404-AF21-DCFB-73457F26E971}\resource.xml
                      • Size 1KB
                      • SHA256 995f07448661dec2389b445cbe054e4fce31d07bed2f3f9f4bc94ee9a875fc92
                      • MD5 SHA1 SHA512

                      stream.x64.x-none.dat.cat

                      • Path C:\ProgramData\{9E28791C-3404-AF21-DCFB-73457F26E971}\stream.x64.x-none.dat.cat
                      • Size 574KB
                      • SHA256 320ae5c50698f4553758c71c37135cf390c06f355cfb3b8cc18dae85ead16944
                      • MD5 SHA1 SHA512 SSDEEP

                      wlidsvcconfig.xml

                      • Path C:\ProgramData\{9E28791C-3404-AF21-DCFB-73457F26E971}\wlidsvcconfig.xml
                      • Size 13KB
                      • SHA256 873cea12cd4b0d258868adc08b1a2db6f9d870c2ed84cabac2eaed07f3cbc7f0
                      • MD5 SHA1 SHA512 SSDEEP

                      Athusdiuuhasd.dll

                      • Path C:\Users\Admin\AppData\Local\Temp\Athusdiuuhasd.dll
                      • Size 4.4MB
                      • SHA256 35e37189ddf2eda718d424cec3ff0f4a09e7b3e2ad5bd2720e82e2445299141f
                      • MD5 SHA1 SHA512 SSDEEP

                      Athusdiuuhasd.dll

                      • Path C:\Users\Admin\AppData\Local\Temp\Athusdiuuhasd.dll
                      • Size 4.4MB
                      • SHA256 35e37189ddf2eda718d424cec3ff0f4a09e7b3e2ad5bd2720e82e2445299141f
                      • MD5 SHA1 SHA512 SSDEEP

                      Athusdiuuhasd.dll

                      • Path C:\Users\Admin\AppData\Local\Temp\Athusdiuuhasd.dll
                      • Size 4.4MB
                      • SHA256 35e37189ddf2eda718d424cec3ff0f4a09e7b3e2ad5bd2720e82e2445299141f
                      • MD5 SHA1 SHA512 SSDEEP

                      sendforcomments.dll

                      • Path \??\c:\program files (x86)\windowspowershell\modules\sendforcomments.dll
                      • Size 4.4MB
                      • SHA256 4e63ff027c55a6a969a14944c96522c3144f22ebf3abdaf8d0f466a5ce0fd271
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/1492-170-0x00000000025C0000-0x000000000311A000-memory.dmp

                      memory/1492-186-0x0000000000400000-0x000000000086E000-memory.dmp

                      memory/1492-171-0x00000000025C0000-0x000000000311A000-memory.dmp

                      memory/1492-162-0x0000000000400000-0x000000000086E000-memory.dmp

                      memory/1492-188-0x00000000025C0000-0x000000000311A000-memory.dmp

                      memory/3368-134-0x0000000000400000-0x0000000002F19000-memory.dmp

                      memory/3368-141-0x0000000000400000-0x0000000002F19000-memory.dmp

                      memory/3368-133-0x00000000050D0000-0x00000000055C0000-memory.dmp

                      memory/3368-132-0x0000000004D31000-0x00000000050C2000-memory.dmp

                      memory/3684-185-0x0000000002EB0000-0x0000000003A0A000-memory.dmp

                      memory/3684-184-0x0000000002280000-0x00000000026EE000-memory.dmp

                      memory/3684-179-0x0000000002EB0000-0x0000000003A0A000-memory.dmp

                      memory/3684-178-0x0000000002EB0000-0x0000000003A0A000-memory.dmp

                      memory/3684-177-0x0000000002280000-0x00000000026EE000-memory.dmp

                      memory/3684-175-0x0000000002280000-0x00000000026EE000-memory.dmp

                      memory/3740-150-0x0000000004500000-0x0000000004640000-memory.dmp

                      memory/3740-145-0x00000000038A0000-0x00000000043FA000-memory.dmp

                      memory/3740-148-0x0000000004F50000-0x0000000005090000-memory.dmp

                      memory/3740-146-0x0000000004500000-0x0000000004640000-memory.dmp

                      memory/3740-147-0x0000000004500000-0x0000000004640000-memory.dmp

                      memory/3740-144-0x00000000038A0000-0x00000000043FA000-memory.dmp

                      memory/3740-149-0x0000000004F50000-0x0000000005090000-memory.dmp

                      memory/3740-158-0x00000000038A0000-0x00000000043FA000-memory.dmp

                      memory/3740-143-0x00000000038A0000-0x00000000043FA000-memory.dmp

                      memory/3740-151-0x0000000004500000-0x0000000004640000-memory.dmp

                      memory/3740-142-0x0000000002620000-0x0000000002A8E000-memory.dmp

                      memory/3740-140-0x0000000002620000-0x0000000002A8E000-memory.dmp

                      memory/3740-139-0x0000000002620000-0x0000000002A8E000-memory.dmp

                      memory/5020-154-0x000001B1CD140000-0x000001B1CD280000-memory.dmp

                      memory/5020-153-0x000001B1CD140000-0x000001B1CD280000-memory.dmp

                      memory/5020-155-0x0000000000E50000-0x00000000010E1000-memory.dmp

                      memory/5020-156-0x000001B1CD290000-0x000001B1CD533000-memory.dmp