Analysis

  • max time kernel
    4294181s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    28-02-2022 03:11

General

  • Target

    3f7b0d15f4cbe63e57fb06b57575bf6dd9eb777c737b0886250166768169fc6c.exe

  • Size

    598KB

  • MD5

    45abce50a00d40dff21edb7264824758

  • SHA1

    0861d2abbcf16bf6394dc7aadd341b348a3c8c4d

  • SHA256

    3f7b0d15f4cbe63e57fb06b57575bf6dd9eb777c737b0886250166768169fc6c

  • SHA512

    7097f34634f716609bc4bbe27af511a9fec24c555c25c22e712f3ce019b471328226030bb2939692f36a81cc24de105670b263d0fb7036375e60c8ddaee2a8f6

Malware Config

Signatures

  • OutSteel

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

  • OutSteel batch script 1 IoCs

    Detects batch script dropped by OutSteel

  • Deletes itself 1 IoCs
  • 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 24 IoCs

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

  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3f7b0d15f4cbe63e57fb06b57575bf6dd9eb777c737b0886250166768169fc6c.exe
    "C:\Users\Admin\AppData\Local\Temp\3f7b0d15f4cbe63e57fb06b57575bf6dd9eb777c737b0886250166768169fc6c.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of WriteProcessMemory
    PID:1236
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.doc" /S /B /A
      2⤵
        PID:1612
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pdf" /S /B /A
        2⤵
          PID:564
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppt" /S /B /A
          2⤵
            PID:240
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
            2⤵
              PID:620
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.xl" /S /B /A
              2⤵
                PID:1892
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.csv" /S /B /A
                2⤵
                  PID:1960
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rtf" /S /B /A
                  2⤵
                    PID:1912
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
                    2⤵
                      PID:824
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.mdb" /S /B /A
                      2⤵
                        PID:840
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.accdb" /S /B /A
                        2⤵
                          PID:1720
                        • C:\Windows\SysWOW64\cmd.exe
                          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pot" /S /B /A
                          2⤵
                            PID:1004
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pps" /S /B /A
                            2⤵
                              PID:1520
                            • C:\Windows\SysWOW64\cmd.exe
                              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppa" /S /B /A
                              2⤵
                                PID:1684
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rar" /S /B /A
                                2⤵
                                  PID:1704
                                • C:\Windows\SysWOW64\cmd.exe
                                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.zip" /S /B /A
                                  2⤵
                                    PID:560
                                  • C:\Windows\SysWOW64\cmd.exe
                                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.tar" /S /B /A
                                    2⤵
                                      PID:1856
                                    • C:\Windows\SysWOW64\cmd.exe
                                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.7z" /S /B /A
                                      2⤵
                                        PID:1328
                                      • C:\Windows\SysWOW64\cmd.exe
                                        cmd /c start /min r.bat
                                        2⤵
                                          PID:1944
                                          • C:\Windows\SysWOW64\cmd.exe
                                            C:\Windows\system32\cmd.exe /K r.bat
                                            3⤵
                                            • Deletes itself
                                            PID:1948
                                            • C:\Windows\SysWOW64\cmd.exe
                                              cmd /min /c del "C:\Users\Admin\AppData\Local\Temp\r.bat"
                                              4⤵
                                                PID:1152
                                              • C:\Windows\SysWOW64\taskkill.exe
                                                Taskkill /IM cmd.exe /F
                                                4⤵
                                                • Kills process with taskkill
                                                • Suspicious use of AdjustPrivilegeToken
                                                PID:1912

                                        Network

                                        MITRE ATT&CK Enterprise v6

                                        Replay Monitor

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                                        Downloads

                                        • memory/1236-54-0x000000000304B000-0x00000000030C6000-memory.dmp

                                          Filesize

                                          492KB

                                        • memory/1236-55-0x0000000075F71000-0x0000000075F73000-memory.dmp

                                          Filesize

                                          8KB

                                        • memory/1236-57-0x0000000000300000-0x00000000003DD000-memory.dmp

                                          Filesize

                                          884KB

                                        • memory/1236-58-0x0000000000400000-0x00000000004E2000-memory.dmp

                                          Filesize

                                          904KB

                                        • memory/1236-56-0x000000000304B000-0x00000000030C6000-memory.dmp

                                          Filesize

                                          492KB