Analysis

  • max time kernel
    4294178s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    28-02-2022 03:20

General

  • Target

    9a72e56ac0f1badd3ca761b53e9998a7e0525f2055dbec01d867f62bdb30418e.exe

  • Size

    737KB

  • MD5

    22840909e11530390e8f74c6a162ded1

  • SHA1

    78d82f0ff396393e958553f25a47145916ea4e39

  • SHA256

    9a72e56ac0f1badd3ca761b53e9998a7e0525f2055dbec01d867f62bdb30418e

  • SHA512

    2a2214dc48b6942b19e439db189a9b2e7df6d91c26b24692fe370d552c70e828cb6d4ac344dc2fe36e08b0752e4ae8886f4d1f3f45970a65eaebae2d3069c130

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\9a72e56ac0f1badd3ca761b53e9998a7e0525f2055dbec01d867f62bdb30418e.exe
    "C:\Users\Admin\AppData\Local\Temp\9a72e56ac0f1badd3ca761b53e9998a7e0525f2055dbec01d867f62bdb30418e.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.doc" /S /B /A
      2⤵
        PID:1112
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pdf" /S /B /A
        2⤵
          PID:1492
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppt" /S /B /A
          2⤵
            PID:1268
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
            2⤵
              PID:1432
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.xl" /S /B /A
              2⤵
                PID:1092
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.csv" /S /B /A
                2⤵
                  PID:1944
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rtf" /S /B /A
                  2⤵
                    PID:2012
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
                    2⤵
                      PID:1516
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.mdb" /S /B /A
                      2⤵
                        PID:972
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.accdb" /S /B /A
                        2⤵
                          PID:1868
                        • C:\Windows\SysWOW64\cmd.exe
                          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pot" /S /B /A
                          2⤵
                            PID:1764
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pps" /S /B /A
                            2⤵
                              PID:476
                            • C:\Windows\SysWOW64\cmd.exe
                              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppa" /S /B /A
                              2⤵
                                PID:320
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rar" /S /B /A
                                2⤵
                                  PID:1488
                                • C:\Windows\SysWOW64\cmd.exe
                                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.zip" /S /B /A
                                  2⤵
                                    PID:912
                                  • C:\Windows\SysWOW64\cmd.exe
                                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.tar" /S /B /A
                                    2⤵
                                      PID:1224
                                    • C:\Windows\SysWOW64\cmd.exe
                                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.7z" /S /B /A
                                      2⤵
                                        PID:1484
                                      • C:\Windows\SysWOW64\cmd.exe
                                        cmd /c start /min r.bat
                                        2⤵
                                          PID:1708
                                          • C:\Windows\SysWOW64\cmd.exe
                                            C:\Windows\system32\cmd.exe /K r.bat
                                            3⤵
                                            • Deletes itself
                                            PID:1940
                                            • C:\Windows\SysWOW64\cmd.exe
                                              cmd /min /c del "C:\Users\Admin\AppData\Local\Temp\r.bat"
                                              4⤵
                                                PID:1936
                                              • C:\Windows\SysWOW64\taskkill.exe
                                                Taskkill /IM cmd.exe /F
                                                4⤵
                                                • Kills process with taskkill
                                                • Suspicious use of AdjustPrivilegeToken
                                                PID:1964

                                        Network

                                        MITRE ATT&CK Enterprise v6

                                        Replay Monitor

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                                        Downloads

                                        • memory/1676-54-0x00000000019DA000-0x0000000001A55000-memory.dmp

                                          Filesize

                                          492KB

                                        • memory/1676-55-0x0000000075D71000-0x0000000075D73000-memory.dmp

                                          Filesize

                                          8KB

                                        • memory/1676-57-0x0000000001800000-0x00000000018DD000-memory.dmp

                                          Filesize

                                          884KB

                                        • memory/1676-56-0x00000000019DA000-0x0000000001A55000-memory.dmp

                                          Filesize

                                          492KB

                                        • memory/1676-58-0x0000000000400000-0x00000000004E2000-memory.dmp

                                          Filesize

                                          904KB