Analysis

  • max time kernel
    119s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    27-10-2021 09:07

General

  • Target

    8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576.exe

  • Size

    2.6MB

  • MD5

    070fda7ec3fff56936fc67efb7b783eb

  • SHA1

    eba99aa986390748c0be4287fffbf6b98609db3b

  • SHA256

    8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576

  • SHA512

    79e695eb97f902bd1ce94b1f862ed79228188f1424e5f28e00cf2013f616581f362c2a016eabd31c308654a05ef33f3805a2add22ad09aa4e62a875386f4fd6d

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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 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 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576.exe
    "C:\Users\Admin\AppData\Local\Temp\8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1296
    • C:\Users\Admin\AppData\Local\Temp\is-FIJK1.tmp\8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-FIJK1.tmp\8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576.tmp" /SL5="$A0158,1858392,831488,C:\Users\Admin\AppData\Local\Temp\8bed7d919d14af37a609f7c0501d58405e51ee10b3b129fbe25e040a3dd3a576.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:572
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C mountvol P: /D
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:540
        • C:\Windows\SysWOW64\mountvol.exe
          mountvol P: /D
          4⤵
          • Enumerates connected drives
          PID:1412
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C bcdedit /set {bootmgr} path \EFI\Boot\bareflank.efi
        3⤵
          PID:1952
        • C:\Windows\SysWOW64\cmd.exe
          "cmd.exe" /C setx /m PATH "%PATH%C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1908
          • 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-3UKC3.tmp"
            4⤵
              PID:816
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp\devcon.exe" remove "ROOT\bareflank""
            3⤵
              PID:836
            • C:\Windows\SysWOW64\cmd.exe
              "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp\bareflank.inf" "ROOT\bareflank""
              3⤵
                PID:1132
              • C:\Windows\SysWOW64\cmd.exe
                "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp\devcon.exe" install "C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp\bfbuilder.inf" "ROOT\bfbuilder""
                3⤵
                  PID:848
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd.exe" /C ""C:\Users\Admin\AppData\Local\Temp\is-3UKC3.tmp\devcon.exe" remove "ROOT\bfbuilder""
                  3⤵
                    PID:1872
                  • 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:1388
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe"
                      4⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious behavior: MapViewOfSection
                      PID:1924
                      • C:\Windows\SysWOW64\notepad.exe
                        "C:\Windows\system32\notepad.exe"
                        5⤵
                        • Drops file in Windows directory
                        PID:1596

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              • memory/572-63-0x0000000000240000-0x0000000000241000-memory.dmp

                Filesize

                4KB

              • memory/1296-55-0x00000000757E1000-0x00000000757E3000-memory.dmp

                Filesize

                8KB

              • memory/1296-58-0x0000000000400000-0x00000000004D8000-memory.dmp

                Filesize

                864KB

              • memory/1388-80-0x000000000027F000-0x0000000000289000-memory.dmp

                Filesize

                40KB

              • memory/1596-96-0x0000000000400000-0x0000000000426000-memory.dmp

                Filesize

                152KB

              • memory/1596-89-0x0000000000220000-0x0000000000229000-memory.dmp

                Filesize

                36KB

              • memory/1596-88-0x00000000774E0000-0x0000000077689000-memory.dmp

                Filesize

                1.7MB

              • memory/1924-86-0x00000000774E0000-0x0000000077689000-memory.dmp

                Filesize

                1.7MB

              • memory/1924-85-0x0000000000320000-0x0000000000328000-memory.dmp

                Filesize

                32KB

              • memory/1924-84-0x00000000001D0000-0x00000000001D2000-memory.dmp

                Filesize

                8KB