Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04/06/2024, 01:36

General

  • Target
    85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
  • Size 119KB
  • Sample240604-b1kpdagg5x
  • SHA256 85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
    "C:\Users\Admin\AppData\Local\Temp\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2128
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && timeout /t 3 > NUL && schtasks /create /tn "85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe" &&START "" "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:2680
        • C:\Windows\system32\timeout.exe
          timeout /t 3
          3⤵
          • Delays execution with timeout.exe
          PID:2596
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe" /rl HIGHEST /f
          3⤵
          • Creates scheduled task(s)
          PID:2748
        • C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
          "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2600
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:3048
            • C:\Windows\system32\chcp.com
              chcp 65001
              5⤵
                PID:1740
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                5⤵
                  PID:592
                • C:\Windows\system32\findstr.exe
                  findstr /R /C:"[ ]:[ ]"
                  5⤵
                    PID:1144
                • C:\Windows\system32\cmd.exe
                  "cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2924
                  • C:\Windows\system32\chcp.com
                    chcp 65001
                    5⤵
                      PID:2396
                    • C:\Windows\system32\netsh.exe
                      netsh wlan show networks mode=bssid
                      5⤵
                        PID:1500
                      • C:\Windows\system32\findstr.exe
                        findstr "SSID BSSID Signal"
                        5⤵
                          PID:1016
                • C:\Windows\system32\taskeng.exe
                  taskeng.exe {516A6D92-DB09-48B2-903D-A145346237E1} S-1-5-21-1298544033-3225604241-2703760938-1000:IZKCKOTP\Admin:Interactive:[1]
                  1⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1396
                  • C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                    C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                    2⤵
                    • Executes dropped EXE
                    • Accesses Microsoft Outlook profiles
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    • outlook_office_path
                    • outlook_win_path
                    PID:1876
                    • C:\Windows\system32\cmd.exe
                      "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
                      3⤵
                      • Suspicious use of WriteProcessMemory
                      PID:3060
                      • C:\Windows\system32\chcp.com
                        chcp 65001
                        4⤵
                          PID:1696
                        • C:\Windows\system32\netsh.exe
                          netsh wlan show profiles
                          4⤵
                            PID:2508
                          • C:\Windows\system32\findstr.exe
                            findstr /R /C:"[ ]:[ ]"
                            4⤵
                              PID:2620
                          • C:\Windows\system32\cmd.exe
                            "cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"
                            3⤵
                            • Suspicious use of WriteProcessMemory
                            PID:2980
                            • C:\Windows\system32\chcp.com
                              chcp 65001
                              4⤵
                                PID:2788
                              • C:\Windows\system32\netsh.exe
                                netsh wlan show networks mode=bssid
                                4⤵
                                  PID:2644
                                • C:\Windows\system32\findstr.exe
                                  findstr "SSID BSSID Signal"
                                  4⤵
                                    PID:2776

                            Network

                                  MITRE ATT&CK Enterprise v15

                                  Replay Monitor

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                                  Downloads

                                  94308059B57B3142E455B38A6EB92015

                                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
                                  • Size 70KB
                                  • SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
                                  • MD5 SHA1 SHA512 SSDEEP

                                  94308059B57B3142E455B38A6EB92015

                                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                                  • Size 342B
                                  • SHA256 b0870b084f4c4ceb70006e07cef55a57983d7b506de9608409965f559bc0d759
                                  • MD5 SHA1 SHA512

                                  94308059B57B3142E455B38A6EB92015

                                  • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
                                  • Size 342B
                                  • SHA256 b88378a066c4dfc9f318efdae040171a7a4a3ec10c1efcf7c3b5853466da8bac
                                  • MD5 SHA1 SHA512

                                  85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe

                                  • Path C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                                  • Size 119KB
                                  • SHA256 85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0
                                  • MD5 SHA1 SHA512 SSDEEP

                                  Tar441A.tmp

                                  • Path C:\Users\Admin\AppData\Local\Temp\Tar441A.tmp
                                  • Size 181KB
                                  • SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
                                  • MD5 SHA1 SHA512 SSDEEP

                                  p.dat

                                  • Path C:\Users\Admin\AppData\Local\zxqaiiy6en\p.dat
                                  • Size 4B
                                  • SHA256 153ebeeacf6b8a97825becc9658657e044db07ed9b9db6c4b997ef9c44c2e021
                                  • MD5 SHA1 SHA512

                                  memory/2128-0-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

                                  memory/2128-1-0x00000000008D0000-0x00000000008F4000-memory.dmp

                                  memory/2128-2-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

                                  memory/2128-5-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

                                  memory/2600-9-0x0000000001390000-0x00000000013B4000-memory.dmp