Analysis

  • max time kernel
    121s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    16-11-2021 11:55

General

  • Target

    4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2.bin.exe

  • Size

    2.1MB

  • MD5

    fe4cf3c47ab7cd452897f4c238e89fd5

  • SHA1

    85b9f90278ef9404e274a09b839385e71ca87063

  • SHA256

    4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2

  • SHA512

    129a7c0b881893387477ee92a59f2d6efd1aed1eb36f0284109ffa9a01a2d45be1cd2f2d9543c037e5c746729f7ae8a1da1ca8478f99bb5a12eedeec83277485

Malware Config

Signatures

  • ParallaxRat

    ParallaxRat is a multipurpose RAT written in MASM.

  • ParallaxRat payload 1 IoCs

    Detects payload of Parallax Rat, a small portable Rat usually digitally signed with a Sectigo certificate.

  • suricata: ET MALWARE Parallax CnC Response Activity M16

    suricata: ET MALWARE Parallax CnC Response Activity M16

  • Blocklisted process makes network request 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 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 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2.bin.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1488
    • C:\Users\Admin\AppData\Local\Temp\is-F8HIR.tmp\4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2.bin.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-F8HIR.tmp\4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2.bin.tmp" /SL5="$40154,1397605,831488,C:\Users\Admin\AppData\Local\Temp\4f74803791d37f2d626b63e9a3618f28cbb07537760a931a78bf755965e9c2f2.bin.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C mountvol P: /D
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\SysWOW64\mountvol.exe
          mountvol P: /D
          4⤵
          • Enumerates connected drives
          PID:756
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C setx /m PATH "%PATH%C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1524
        • C:\Windows\SysWOW64\setx.exe
          setx /m PATH "C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp"
          4⤵
            PID:1512
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C bcdedit /set {bootmgr} path \EFI\Boot\bareflank.efi
          3⤵
            PID:1932
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp\devcon.exe" remove "ROOT\bareflank""
            3⤵
              PID:1536
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp\bareflank.inf" "ROOT\bareflank""
              3⤵
                PID:1052
              • C:\Windows\SysWOW64\cmd.exe
                "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp\devcon.exe" remove "ROOT\bfbuilder""
                3⤵
                  PID:1452
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-JIS7L.tmp\bfbuilder.inf" "ROOT\bfbuilder""
                  3⤵
                    PID:1660
                  • C:\Users\Admin\AppData\Roaming\wsqmcons.exe
                    "C:\Users\Admin\AppData\Roaming\wsqmcons.exe"
                    3⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of WriteProcessMemory
                    PID:1604
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe"
                      4⤵
                      • Blocklisted process makes network request
                      • Modifies system certificate store
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious behavior: MapViewOfSection
                      PID:1716
                      • C:\Windows\SysWOW64\cmd.exe
                        "C:\Windows\system32\cmd.exe"
                        5⤵
                          PID:1748
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe"
                          5⤵
                            PID:1732
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\system32\cmd.exe"
                            5⤵
                              PID:608
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\system32\cmd.exe"
                              5⤵
                                PID:1292
                              • C:\Windows\SysWOW64\cmd.exe
                                "C:\Windows\system32\cmd.exe"
                                5⤵
                                • Blocklisted process makes network request
                                • Loads dropped DLL
                                PID:1576

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • memory/1204-63-0x0000000000240000-0x0000000000241000-memory.dmp

                        Filesize

                        4KB

                      • memory/1488-55-0x0000000076231000-0x0000000076233000-memory.dmp

                        Filesize

                        8KB

                      • memory/1488-62-0x0000000000400000-0x00000000004D8000-memory.dmp

                        Filesize

                        864KB

                      • memory/1576-101-0x0000000000400000-0x0000000000426000-memory.dmp

                        Filesize

                        152KB

                      • memory/1576-93-0x00000000000C0000-0x00000000000C9000-memory.dmp

                        Filesize

                        36KB

                      • memory/1576-92-0x0000000077310000-0x00000000774B9000-memory.dmp

                        Filesize

                        1.7MB

                      • memory/1604-80-0x000000000076F000-0x0000000000779000-memory.dmp

                        Filesize

                        40KB

                      • memory/1716-86-0x0000000077310000-0x00000000774B9000-memory.dmp

                        Filesize

                        1.7MB

                      • memory/1716-85-0x0000000002280000-0x0000000002288000-memory.dmp

                        Filesize

                        32KB

                      • memory/1716-84-0x0000000000090000-0x0000000000092000-memory.dmp

                        Filesize

                        8KB