Analysis

  • max time kernel
    15s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 00:32

General

  • Target
    9a529c50eb0634b972e59ba7bdcc87e3.exe
  • Size 64KB
  • Sample240214-avy45scf4v
  • SHA256 411cd95091dd316986eae25a3431ac75f4740cc690de4d2c6fde1660f0809af1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 64 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9a529c50eb0634b972e59ba7bdcc87e3.exe
    "C:\Users\Admin\AppData\Local\Temp\9a529c50eb0634b972e59ba7bdcc87e3.exe"
    1⤵
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1860
    • C:\AKACD4T7X4L.EXE
      C:\AKACD4T7X4L.EXE FDONSZUYCQS
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of SetWindowsHookEx
      PID:4072
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "c:\windows\fdonszuycqs.dll"
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:404
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\WCL9BW.BAT
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3864
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /u /s itss.dll
        3⤵
          PID:4976
        • C:\Windows\SysWOW64\reg.exe
          reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Disable Script Debugger" /t REG_SZ /d yes /F
          3⤵
          • Modifies Internet Explorer settings
          PID:3268
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /u /s scrrun.dll
          3⤵
          • Modifies registry class
          PID:4800
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /s jscript.dll
          3⤵
          • Modifies registry class
          PID:648
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /u /s msvidctl.dll
          3⤵
            PID:3972
          • C:\Windows\SysWOW64\reg.exe
            reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Display Inline Videos" /t REG_SZ /d no /F
            3⤵
              PID:2176
            • C:\Windows\SysWOW64\reg.exe
              reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Display Inline Images" /t REG_SZ /d yes /F
              3⤵
                PID:4252
              • C:\Windows\SysWOW64\reg.exe
                reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v DisableScriptDebuggerIE /t REG_SZ /d yes /F
                3⤵
                  PID:1292
                • C:\Windows\SysWOW64\reg.exe
                  reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Background_Sounds /t REG_SZ /d no /F
                  3⤵
                    PID:4956
                  • C:\Windows\SysWOW64\regsvr32.exe
                    regsvr32.exe /u /s vbscript.dll
                    3⤵
                      PID:556
                    • C:\Windows\SysWOW64\reg.exe
                      reg.exe delete HKLM\Software\Microsoft\Windows\CurrentVersion\Run /F
                      3⤵
                      • Modifies registry key
                      PID:1472
                    • C:\Windows\SysWOW64\reg.exe
                      reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Animations /t REG_SZ /d no /F
                      3⤵
                        PID:1176
                      • C:\Windows\SysWOW64\reg.exe
                        reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Animations /t REG_SZ /d no /F
                        3⤵
                          PID:2936

                    Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

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                          Downloads

                          AKACD4T7X4L.EXE

                          • Path C:\AKACD4T7X4L.EXE
                          • Size 10KB
                          • SHA256 e3c841c3b05305890c2496dadf759a8077860f4b1e6a73a12e90bd97cfd95b44
                          • MD5 SHA1 SHA512 SSDEEP

                          I082ECTPIS.EXE

                          • Path C:\Program Files\8JVZPU2T1\I082ECTPIS.EXE
                          • Size 64KB
                          • SHA256 411cd95091dd316986eae25a3431ac75f4740cc690de4d2c6fde1660f0809af1
                          • MD5 SHA1 SHA512 SSDEEP

                          WCL9BW.BAT

                          • Path C:\WCL9BW.BAT
                          • Size 1KB
                          • SHA256 2f62c3275b2af56b9801147a9c876bbb9b4cd9ed284f4355d9b66dd557c41eb7
                          • MD5 SHA1 SHA512

                          FDONSZUYCQS.txt

                          • Path C:\Windows\FDONSZUYCQS.txt
                          • Size 64KB
                          • SHA256 e574bb10eb4879a7747dae43898e48c1cc3682186ddedff561695e4a9d7f14ab
                          • MD5 SHA1 SHA512 SSDEEP

                          fdonszuycqs.dll

                          • Path \??\c:\windows\fdonszuycqs.dll
                          • Size 28KB
                          • SHA256 fcfba5ab83249f8335eed513d3541833fa612d6e483bc77417c55ac6732b78b8
                          • MD5 SHA1 SHA512 SSDEEP