Analysis

  • max time kernel
    151s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    28-10-2021 12:58

General

  • Target

    293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392.exe

  • Size

    2.6MB

  • MD5

    12308f01f8fa9f8f8382c6fc4d445476

  • SHA1

    0274eef2d23f42f699964ab1d4d9be3e9a8512d1

  • SHA256

    293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392

  • SHA512

    b69fe6966d1d6dc5656990f64211107aebc1f423b8d2ba4d1e8bbd4cd7621d54b3abcc62a4bb819a1a2f442703f7c1fde086feeed4fb0fbda0174ae549e3446c

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.

  • Blocklisted process makes network request 4 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392.exe
    "C:\Users\Admin\AppData\Local\Temp\293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Users\Admin\AppData\Local\Temp\is-GFOP4.tmp\293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-GFOP4.tmp\293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392.tmp" /SL5="$301CC,1858391,831488,C:\Users\Admin\AppData\Local\Temp\293a83bfe2839bfa6d40fa52f5088e43b62791c08343c3f4dade4f1118000392.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2276
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C mountvol P: /D
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3684
        • C:\Windows\SysWOW64\mountvol.exe
          mountvol P: /D
          4⤵
          • Enumerates connected drives
          PID:2256
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C bcdedit /set {bootmgr} path \EFI\Boot\bareflank.efi
        3⤵
          PID:1648
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C setx /m PATH "%PATH%C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3944
          • 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-D6NRE.tmp"
            4⤵
              PID:1988
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp\devcon.exe" remove "ROOT\bareflank""
            3⤵
              PID:644
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp\devcon.exe" remove "ROOT\bfbuilder""
              3⤵
                PID:3180
              • C:\Windows\SysWOW64\cmd.exe
                "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp\bareflank.inf" "ROOT\bareflank""
                3⤵
                  PID:816
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-D6NRE.tmp\bfbuilder.inf" "ROOT\bfbuilder""
                  3⤵
                    PID:1768
                  • 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:3488
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe"
                      4⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious behavior: MapViewOfSection
                      PID:3328
                      • C:\Windows\SysWOW64\cmd.exe
                        "C:\Windows\system32\cmd.exe"
                        5⤵
                        • Blocklisted process makes network request
                        • Drops file in Windows directory
                        PID:2252
                        • C:\Users\Admin\AppData\Roaming\calc.exe
                          "C:\Users\Admin\AppData\Roaming\calc.exe"
                          6⤵
                          • Executes dropped EXE
                          • Loads dropped DLL
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2412
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\system32\cmd.exe"
                            7⤵
                              PID:1228
                              • C:\Windows\SysWOW64\notepad.exe
                                "C:\Windows\system32\notepad.exe"
                                8⤵
                                  PID:1452
                                • C:\Windows\SysWOW64\notepad.exe
                                  "C:\Windows\system32\notepad.exe"
                                  8⤵
                                  • Drops file in Windows directory
                                  PID:1332

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/1228-218-0x0000000002FD0000-0x0000000002FD2000-memory.dmp

                    Filesize

                    8KB

                  • memory/2252-174-0x00007FF83B380000-0x00007FF83B55B000-memory.dmp

                    Filesize

                    1.9MB

                  • memory/2252-168-0x0000000000550000-0x0000000000551000-memory.dmp

                    Filesize

                    4KB

                  • memory/2252-199-0x0000000000400000-0x0000000000424000-memory.dmp

                    Filesize

                    144KB

                  • memory/2252-173-0x0000000000900000-0x0000000000909000-memory.dmp

                    Filesize

                    36KB

                  • memory/2252-169-0x0000000000550000-0x0000000000551000-memory.dmp

                    Filesize

                    4KB

                  • memory/2276-120-0x0000000002770000-0x0000000002771000-memory.dmp

                    Filesize

                    4KB

                  • memory/2412-207-0x000000000130E000-0x0000000001318000-memory.dmp

                    Filesize

                    40KB

                  • memory/2848-117-0x0000000000400000-0x00000000004D8000-memory.dmp

                    Filesize

                    864KB

                  • memory/3328-161-0x00007FF83B380000-0x00007FF83B55B000-memory.dmp

                    Filesize

                    1.9MB

                  • memory/3328-139-0x0000000077289000-0x000000007728A000-memory.dmp

                    Filesize

                    4KB

                  • memory/3328-147-0x00000000031B0000-0x00000000031B2000-memory.dmp

                    Filesize

                    8KB

                  • memory/3328-160-0x0000000003600000-0x0000000003608000-memory.dmp

                    Filesize

                    32KB

                  • memory/3488-136-0x0000000000179000-0x0000000000183000-memory.dmp

                    Filesize

                    40KB