Analysis

  • max time kernel
    146s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-04-2024 10:21

General

  • Target

    37be3d8810959e63d5b6535164e51f16ccea9ca11d7dab7c1dfaa335affe6e3d.exe

  • Size

    878KB

  • MD5

    83cd7984cee0a4fde468216521d9d3fc

  • SHA1

    e8fa43110dd36085d79199788d2ea5c57236136e

  • SHA256

    37be3d8810959e63d5b6535164e51f16ccea9ca11d7dab7c1dfaa335affe6e3d

  • SHA512

    5df4a3afeeb18f38900c224622b32c5f729f6678bb4f24a75b0994372360a68a3b838375d67c89d843c386091c595dfe6b42dcd7d763d8381811eade68101245

  • SSDEEP

    24576:zAHnh+eWsN3skA4RV1Hom2KXRmLaFtL5:+h+ZkldoPKBgaFf

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

  • 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.

  • 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\37be3d8810959e63d5b6535164e51f16ccea9ca11d7dab7c1dfaa335affe6e3d.exe
    "C:\Users\Admin\AppData\Local\Temp\37be3d8810959e63d5b6535164e51f16ccea9ca11d7dab7c1dfaa335affe6e3d.exe"
    1⤵
    • Enumerates connected drives
    • Suspicious use of WriteProcessMemory
    PID:5012
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.doc" /S /B /A
      2⤵
        PID:4860
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pdf" /S /B /A
        2⤵
          PID:4192
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppt" /S /B /A
          2⤵
            PID:3868
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
            2⤵
              PID:2280
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.xl" /S /B /A
              2⤵
                PID:3116
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.csv" /S /B /A
                2⤵
                  PID:2000
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rtf" /S /B /A
                  2⤵
                    PID:2276
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
                    2⤵
                      PID:4580
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.mdb" /S /B /A
                      2⤵
                        PID:1704
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.accdb" /S /B /A
                        2⤵
                          PID:4800
                        • C:\Windows\SysWOW64\cmd.exe
                          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pot" /S /B /A
                          2⤵
                            PID:4636
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pps" /S /B /A
                            2⤵
                              PID:444
                            • C:\Windows\SysWOW64\cmd.exe
                              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppa" /S /B /A
                              2⤵
                                PID:2440
                              • 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:2928
                                  • C:\Windows\SysWOW64\cmd.exe
                                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.tar" /S /B /A
                                    2⤵
                                      PID:5100
                                    • C:\Windows\SysWOW64\cmd.exe
                                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.7z" /S /B /A
                                      2⤵
                                        PID:2840
                                      • C:\Windows\SysWOW64\cmd.exe
                                        C:\Windows\system32\cmd.exe /U /C DIR "f:\*.doc" /S /B /A
                                        2⤵
                                          PID:3780
                                        • C:\Windows\SysWOW64\cmd.exe
                                          C:\Windows\system32\cmd.exe /U /C DIR "f:\*.pdf" /S /B /A
                                          2⤵
                                            PID:2180
                                          • C:\Windows\SysWOW64\cmd.exe
                                            C:\Windows\system32\cmd.exe /U /C DIR "f:\*.ppt" /S /B /A
                                            2⤵
                                              PID:1608
                                            • C:\Windows\SysWOW64\cmd.exe
                                              C:\Windows\system32\cmd.exe /U /C DIR "f:\*.dot" /S /B /A
                                              2⤵
                                                PID:1728
                                              • C:\Windows\SysWOW64\cmd.exe
                                                C:\Windows\system32\cmd.exe /U /C DIR "f:\*.xl" /S /B /A
                                                2⤵
                                                  PID:1588
                                                • C:\Windows\SysWOW64\cmd.exe
                                                  C:\Windows\system32\cmd.exe /U /C DIR "f:\*.csv" /S /B /A
                                                  2⤵
                                                    PID:948
                                                  • C:\Windows\SysWOW64\cmd.exe
                                                    C:\Windows\system32\cmd.exe /U /C DIR "f:\*.rtf" /S /B /A
                                                    2⤵
                                                      PID:5004
                                                    • C:\Windows\SysWOW64\cmd.exe
                                                      C:\Windows\system32\cmd.exe /U /C DIR "f:\*.dot" /S /B /A
                                                      2⤵
                                                        PID:2020
                                                      • C:\Windows\SysWOW64\cmd.exe
                                                        C:\Windows\system32\cmd.exe /U /C DIR "f:\*.mdb" /S /B /A
                                                        2⤵
                                                          PID:1860
                                                        • C:\Windows\SysWOW64\cmd.exe
                                                          C:\Windows\system32\cmd.exe /U /C DIR "f:\*.accdb" /S /B /A
                                                          2⤵
                                                            PID:4548
                                                          • C:\Windows\SysWOW64\cmd.exe
                                                            C:\Windows\system32\cmd.exe /U /C DIR "f:\*.pot" /S /B /A
                                                            2⤵
                                                              PID:2096
                                                            • C:\Windows\SysWOW64\cmd.exe
                                                              C:\Windows\system32\cmd.exe /U /C DIR "f:\*.pps" /S /B /A
                                                              2⤵
                                                                PID:4908
                                                              • C:\Windows\SysWOW64\cmd.exe
                                                                C:\Windows\system32\cmd.exe /U /C DIR "f:\*.ppa" /S /B /A
                                                                2⤵
                                                                  PID:4620
                                                                • C:\Windows\SysWOW64\cmd.exe
                                                                  C:\Windows\system32\cmd.exe /U /C DIR "f:\*.rar" /S /B /A
                                                                  2⤵
                                                                    PID:1844
                                                                  • C:\Windows\SysWOW64\cmd.exe
                                                                    C:\Windows\system32\cmd.exe /U /C DIR "f:\*.zip" /S /B /A
                                                                    2⤵
                                                                      PID:2624
                                                                    • C:\Windows\SysWOW64\cmd.exe
                                                                      C:\Windows\system32\cmd.exe /U /C DIR "f:\*.tar" /S /B /A
                                                                      2⤵
                                                                        PID:3408
                                                                      • C:\Windows\SysWOW64\cmd.exe
                                                                        C:\Windows\system32\cmd.exe /U /C DIR "f:\*.7z" /S /B /A
                                                                        2⤵
                                                                          PID:1468
                                                                        • C:\Windows\SysWOW64\cmd.exe
                                                                          cmd /c start /min r.bat
                                                                          2⤵
                                                                            PID:1440
                                                                            • C:\Windows\SysWOW64\cmd.exe
                                                                              C:\Windows\system32\cmd.exe /K r.bat
                                                                              3⤵
                                                                                PID:5104
                                                                                • C:\Windows\SysWOW64\cmd.exe
                                                                                  cmd /min /c del "C:\Users\Admin\AppData\Local\Temp\r.bat"
                                                                                  4⤵
                                                                                    PID:4256
                                                                                  • C:\Windows\SysWOW64\taskkill.exe
                                                                                    Taskkill /IM cmd.exe /F
                                                                                    4⤵
                                                                                    • Kills process with taskkill
                                                                                    • Suspicious use of AdjustPrivilegeToken
                                                                                    PID:3200

                                                                            Network

                                                                            MITRE ATT&CK Enterprise v15

                                                                            Replay Monitor

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                                                                            Downloads

                                                                            • C:\Users\Admin\AppData\Local\Temp\r.bat

                                                                              Filesize

                                                                              256B

                                                                              MD5

                                                                              1576a75a46c0a2c7ca8c9fa8651fca88

                                                                              SHA1

                                                                              e26a67ac7447dfc97e45f737ee81265fc9f0255c

                                                                              SHA256

                                                                              2733461534a960c5fc24bc40fd4940c2cd88d0e4ac77c460995779f18c0b460a

                                                                              SHA512

                                                                              de6c2a75fd9941aecc281402f61f9331f1aeb225b147ff98f6cbd5ce187e8c57786418ba03342f4a633263f55202c2cb6a90c9872ec8181fc5f4c14211741138