Analysis

  • max time kernel
    80s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • 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

  • Suspicious use of NtCreateProcessExOtherParentProcess 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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:2716
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.doc" /S /B /A
      2⤵
        PID:3764
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pdf" /S /B /A
        2⤵
          PID:1208
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppt" /S /B /A
          2⤵
            PID:228
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
            2⤵
              PID:524
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.xl" /S /B /A
              2⤵
                PID:3880
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.csv" /S /B /A
                2⤵
                  PID:3952
                • C:\Windows\SysWOW64\cmd.exe
                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rtf" /S /B /A
                  2⤵
                    PID:760
                  • C:\Windows\SysWOW64\cmd.exe
                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.dot" /S /B /A
                    2⤵
                      PID:1680
                    • C:\Windows\SysWOW64\cmd.exe
                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.mdb" /S /B /A
                      2⤵
                        PID:552
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.accdb" /S /B /A
                        2⤵
                          PID:3328
                        • C:\Windows\SysWOW64\cmd.exe
                          C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pot" /S /B /A
                          2⤵
                            PID:3408
                          • C:\Windows\SysWOW64\cmd.exe
                            C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.pps" /S /B /A
                            2⤵
                              PID:1516
                            • C:\Windows\SysWOW64\cmd.exe
                              C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.ppa" /S /B /A
                              2⤵
                                PID:3388
                              • C:\Windows\SysWOW64\cmd.exe
                                C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.rar" /S /B /A
                                2⤵
                                  PID:220
                                • C:\Windows\SysWOW64\cmd.exe
                                  C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.zip" /S /B /A
                                  2⤵
                                    PID:1180
                                  • C:\Windows\SysWOW64\cmd.exe
                                    C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.tar" /S /B /A
                                    2⤵
                                      PID:1140
                                    • C:\Windows\SysWOW64\cmd.exe
                                      C:\Windows\system32\cmd.exe /U /C DIR "\Users\Admin\*.7z" /S /B /A
                                      2⤵
                                        PID:2452
                                      • C:\Windows\SysWOW64\cmd.exe
                                        cmd /c start /min r.bat
                                        2⤵
                                        • Suspicious use of WriteProcessMemory
                                        PID:3196
                                        • C:\Windows\SysWOW64\cmd.exe
                                          C:\Windows\system32\cmd.exe /K r.bat
                                          3⤵
                                          • Suspicious use of WriteProcessMemory
                                          PID:3632
                                          • C:\Windows\SysWOW64\cmd.exe
                                            cmd /min /c del "C:\Users\Admin\AppData\Local\Temp\r.bat"
                                            4⤵
                                              PID:4028
                                            • C:\Windows\SysWOW64\taskkill.exe
                                              Taskkill /IM cmd.exe /F
                                              4⤵
                                              • Kills process with taskkill
                                              • Suspicious use of AdjustPrivilegeToken
                                              PID:3880
                                        • C:\Windows\SysWOW64\WerFault.exe
                                          C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 620
                                          2⤵
                                          • Program crash
                                          • Checks processor information in registry
                                          • Enumerates system info in registry
                                          • Suspicious behavior: EnumeratesProcesses
                                          • Suspicious use of AdjustPrivilegeToken
                                          PID:3064
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2716 -ip 2716
                                        1⤵
                                        • Suspicious use of NtCreateProcessExOtherParentProcess
                                        • Suspicious use of WriteProcessMemory
                                        PID:3288

                                      Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

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                                      Downloads

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

                                        MD5

                                        75142646db87722e3cd216e84157f6ed

                                        SHA1

                                        7117081b0c4a11befd69160b469619f1c398ca5d

                                        SHA256

                                        0aa201bdd3c7b20a2888a317be005b00621db640fd6a8637f424d589fe53c146

                                        SHA512

                                        c5c6d56a32145de6d5f926030a91e3279b0e82a959370d159bd2d9673a6f62726d7cc39a0ad20ed020081d1576da9cffbf94400f39799433364f719418ed1846

                                      • memory/2716-130-0x0000000002D00000-0x0000000002D7B000-memory.dmp

                                        Filesize

                                        492KB

                                      • memory/2716-131-0x0000000002D00000-0x0000000002D7B000-memory.dmp

                                        Filesize

                                        492KB

                                      • memory/2716-132-0x0000000004A80000-0x0000000004B5D000-memory.dmp

                                        Filesize

                                        884KB

                                      • memory/2716-133-0x0000000000400000-0x00000000004E2000-memory.dmp

                                        Filesize

                                        904KB