Analysis

  • max time kernel
    140s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10-04-2024 13:48

General

  • Target

    b83c41763b5e861e15614d3d6ab8573c7948bf176143ee4142516e9b8bcb4423.exe

  • Size

    738KB

  • MD5

    059c5bbec45da7e50d92a54160622d36

  • SHA1

    a97230965dea34f32ac9db418aece125ceb63426

  • SHA256

    b83c41763b5e861e15614d3d6ab8573c7948bf176143ee4142516e9b8bcb4423

  • SHA512

    815f69af1f09a2de5d1ee323ef77d203985d516413ab482d635e48d012717b2d7bcac84127d0425a4a879a8e25079dff369482940d5a6bf1be0066fe5e08246b

  • SSDEEP

    12288:4ywZ/z12SBEnKMY+7/Cw6nTcRu5sj1LjOJngWoBPrndO1fcWsfdNcG8zUx:4Z/zHsR76w6nTcRu5s1jXBznY101f+zm

Malware Config

Signatures

  • OutSteel

    OutSteel is a file uploader and document stealer written in AutoIT.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • AutoIT Executable 10 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b83c41763b5e861e15614d3d6ab8573c7948bf176143ee4142516e9b8bcb4423.exe
    "C:\Users\Admin\AppData\Local\Temp\b83c41763b5e861e15614d3d6ab8573c7948bf176143ee4142516e9b8bcb4423.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of WriteProcessMemory
    PID:2892
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.doc" /S /B /A
      2⤵
        PID:2784
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pdf" /S /B /A
        2⤵
          PID:2944
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppt" /S /B /A
          2⤵
            PID:2504
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
            2⤵
              PID:2640
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.xl" /S /B /A
              2⤵
                PID:2520
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.csv" /S /B /A
                2⤵
                  PID:2792
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rtf" /S /B /A
                  2⤵
                    PID:2400
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
                    2⤵
                      PID:2740
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.mdb" /S /B /A
                      2⤵
                        PID:2532
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.accdb" /S /B /A
                        2⤵
                          PID:2360
                        • C:\Windows\SysWOW64\cmd.exe
                          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pot" /S /B /A
                          2⤵
                            PID:2440
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pps" /S /B /A
                            2⤵
                              PID:3040
                            • C:\Windows\SysWOW64\cmd.exe
                              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppa" /S /B /A
                              2⤵
                                PID:240
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rar" /S /B /A
                                2⤵
                                  PID:644
                                • C:\Windows\SysWOW64\cmd.exe
                                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.zip" /S /B /A
                                  2⤵
                                    PID:2572
                                  • C:\Windows\SysWOW64\cmd.exe
                                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.tar" /S /B /A
                                    2⤵
                                      PID:2696
                                    • C:\Windows\SysWOW64\cmd.exe
                                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.7z" /S /B /A
                                      2⤵
                                        PID:2724

                                    Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

                                    • memory/2892-2-0x00000000002D0000-0x00000000003AD000-memory.dmp

                                      Filesize

                                      884KB

                                    • memory/2892-1-0x0000000000580000-0x0000000000680000-memory.dmp

                                      Filesize

                                      1024KB

                                    • memory/2892-3-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-4-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-6-0x0000000000580000-0x0000000000680000-memory.dmp

                                      Filesize

                                      1024KB

                                    • memory/2892-7-0x00000000002D0000-0x00000000003AD000-memory.dmp

                                      Filesize

                                      884KB

                                    • memory/2892-8-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-10-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-12-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-15-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-17-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB

                                    • memory/2892-19-0x0000000000400000-0x00000000004E2000-memory.dmp

                                      Filesize

                                      904KB