Analysis

  • max time kernel
    79s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 09:37

General

  • Target

    b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26.exe

  • Size

    19.5MB

  • MD5

    2710feba607afde5c935bb5183333bbb

  • SHA1

    c22be1aaeb64338a1ca5c26df721a57b2f5909df

  • SHA256

    b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26

  • SHA512

    3f7bf63e50be3be96f5f658fc8132011700da1dde62c7a63281d44d94f24647eecb0c3da0e6694f2e3f9b42a233f01e67a9d5fe06350f0e27defd63179c24b2f

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 M14

    suricata: ET MALWARE Parallax CnC Response Activity M14

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

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

  • Drops file in Windows directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26.exe
    "C:\Users\Admin\AppData\Local\Temp\b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Users\Admin\AppData\Local\Temp\is-M7NQR.tmp\b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-M7NQR.tmp\b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26.tmp" /SL5="$901CC,19610817,831488,C:\Users\Admin\AppData\Local\Temp\b182e256d8ad049c8387e015c6afa78212afa934691feef178d25b07f40e6c26.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3152
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C mountvol P: /D
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Windows\SysWOW64\mountvol.exe
          mountvol P: /D
          4⤵
          • Enumerates connected drives
          PID:1400
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C bcdedit /set {bootmgr} path \EFI\Boot\bareflank.efi
        3⤵
          PID:3608
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C setx /m PATH "%PATH%C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1264
          • C:\Windows\SysWOW64\setx.exe
            setx /m PATH "C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Users\Admin\AppData\Local\Microsoft\WindowsApps;C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp"
            4⤵
              PID:2216
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp\devcon.exe" remove "ROOT\bareflank""
            3⤵
              PID:3760
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp\bareflank.inf" "ROOT\bareflank""
              3⤵
                PID:512
              • C:\Windows\SysWOW64\cmd.exe
                "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp\devcon.exe" remove "ROOT\bfbuilder""
                3⤵
                  PID:812
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-A6LO5.tmp\bfbuilder.inf" "ROOT\bfbuilder""
                  3⤵
                    PID:1676
                  • C:\Users\Admin\AppData\Roaming\opera.exe
                    "C:\Users\Admin\AppData\Roaming\opera.exe"
                    3⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of WriteProcessMemory
                    PID:3100
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe"
                      4⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious behavior: MapViewOfSection
                      PID:1640
                      • C:\Windows\SysWOW64\cmd.exe
                        "C:\Windows\system32\cmd.exe"
                        5⤵
                          PID:2164
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe"
                          5⤵
                          • Blocklisted process makes network request
                          • Drops file in Windows directory
                          PID:2960

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • memory/1640-161-0x00007FFB91EA0000-0x00007FFB9207B000-memory.dmp

                  Filesize

                  1.9MB

                • memory/1640-160-0x0000000003200000-0x0000000003208000-memory.dmp

                  Filesize

                  32KB

                • memory/1640-143-0x0000000002DB0000-0x0000000002DB2000-memory.dmp

                  Filesize

                  8KB

                • memory/1640-139-0x0000000077569000-0x000000007756A000-memory.dmp

                  Filesize

                  4KB

                • memory/1840-117-0x0000000000400000-0x00000000004D8000-memory.dmp

                  Filesize

                  864KB

                • memory/2960-173-0x0000000000950000-0x0000000000951000-memory.dmp

                  Filesize

                  4KB

                • memory/2960-175-0x0000000000950000-0x0000000000951000-memory.dmp

                  Filesize

                  4KB

                • memory/2960-178-0x00007FFB91EA0000-0x00007FFB9207B000-memory.dmp

                  Filesize

                  1.9MB

                • memory/2960-182-0x0000000002EA0000-0x0000000002EA9000-memory.dmp

                  Filesize

                  36KB

                • memory/2960-204-0x0000000000400000-0x0000000000424000-memory.dmp

                  Filesize

                  144KB

                • memory/3152-120-0x0000000000730000-0x0000000000731000-memory.dmp

                  Filesize

                  4KB