Analysis

  • max time kernel
    147s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    14-10-2023 00:18

General

  • Target

    docbit20230908.exe

  • Size

    400.0MB

  • MD5

    81e0872e2be9487534ddd879b05e6f62

  • SHA1

    f97c783cb79036a9f2ff27e70a182f1b6919da18

  • SHA256

    d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0

  • SHA512

    40bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90

  • SSDEEP

    98304:XZ7MAV7nUqgfiWsNkFi589X/JiQGTfZ5MULBhT8i4wv7:XZ7tVDUq6iPkFiedRiQePLBpUw

Score
10/10

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

homesafe1000.duckdns.org:1234

Attributes
  • communication_password

    81dc9bdb52d04dc20036dbd8313ed055

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • Executes dropped EXE 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\docbit20230908.exe
    "C:\Users\Admin\AppData\Local\Temp\docbit20230908.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2412
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2816
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"
      2⤵
        PID:2592
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2596
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f
          3⤵
          • Creates scheduled task(s)
          PID:1012
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\docbit20230908.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"
        2⤵
          PID:2436
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {B78B8073-EB2F-42CC-B170-E825A262ACE4} S-1-5-21-2180306848-1874213455-4093218721-1000:XEBBURHY\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1936
        • C:\Users\Admin\AppData\Roaming\svchost\svchost.exe
          C:\Users\Admin\AppData\Roaming\svchost\svchost.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:348
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            3⤵
              PID:2800
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\svchost"
              3⤵
                PID:556
              • C:\Windows\SysWOW64\cmd.exe
                "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:680
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\svchost\svchost.exe'" /f
                  4⤵
                  • Creates scheduled task(s)
                  PID:1040
              • C:\Windows\SysWOW64\cmd.exe
                "cmd" /c copy "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe" "C:\Users\Admin\AppData\Roaming\svchost\svchost.exe"
                3⤵
                  PID:2156

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

              Filesize

              400.0MB

              MD5

              81e0872e2be9487534ddd879b05e6f62

              SHA1

              f97c783cb79036a9f2ff27e70a182f1b6919da18

              SHA256

              d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0

              SHA512

              40bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90

            • C:\Users\Admin\AppData\Roaming\svchost\svchost.exe

              Filesize

              400.0MB

              MD5

              81e0872e2be9487534ddd879b05e6f62

              SHA1

              f97c783cb79036a9f2ff27e70a182f1b6919da18

              SHA256

              d54df888565db74fd2065bfa327e5b5d2476df10564a25f2b99f3bf7f9504ab0

              SHA512

              40bfff8cb99869510332a8f2c4f62a354de1ed0aa02fcef522c38deecac90c5429a19ee31c1d3eac6bf10f3e7e9cd3439891c949f5d2763bf2463d7bcdab6f90

            • memory/348-53-0x0000000002310000-0x0000000002350000-memory.dmp

              Filesize

              256KB

            • memory/348-75-0x0000000073070000-0x000000007375E000-memory.dmp

              Filesize

              6.9MB

            • memory/348-57-0x0000000002310000-0x0000000002350000-memory.dmp

              Filesize

              256KB

            • memory/348-55-0x0000000073070000-0x000000007375E000-memory.dmp

              Filesize

              6.9MB

            • memory/348-52-0x0000000000300000-0x0000000000702000-memory.dmp

              Filesize

              4.0MB

            • memory/348-51-0x0000000073070000-0x000000007375E000-memory.dmp

              Filesize

              6.9MB

            • memory/2412-3-0x00000000053A0000-0x00000000053E0000-memory.dmp

              Filesize

              256KB

            • memory/2412-4-0x00000000053A0000-0x00000000053E0000-memory.dmp

              Filesize

              256KB

            • memory/2412-5-0x00000000056C0000-0x0000000005A88000-memory.dmp

              Filesize

              3.8MB

            • memory/2412-0-0x0000000001030000-0x0000000001432000-memory.dmp

              Filesize

              4.0MB

            • memory/2412-2-0x0000000074370000-0x0000000074A5E000-memory.dmp

              Filesize

              6.9MB

            • memory/2412-1-0x0000000074370000-0x0000000074A5E000-memory.dmp

              Filesize

              6.9MB

            • memory/2412-36-0x0000000074370000-0x0000000074A5E000-memory.dmp

              Filesize

              6.9MB

            • memory/2816-34-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-44-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-21-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-23-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-25-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-27-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-29-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-31-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-33-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-17-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-35-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-15-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-39-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-41-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-40-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-42-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-43-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-19-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-45-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-46-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-47-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-48-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2816-12-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-11-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-10-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-9-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-54-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-8-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-7-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-56-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-58-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-59-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-6-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-76-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB

            • memory/2816-77-0x0000000000400000-0x00000000007CE000-memory.dmp

              Filesize

              3.8MB