Analysis

  • max time kernel
    117s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    21-04-2021 07:22

General

  • Target

    0344d6ec47d85e81c4346f14bad096c4.exe

  • Size

    95KB

  • MD5

    0344d6ec47d85e81c4346f14bad096c4

  • SHA1

    425c492897eaf59eb30a96fb2229285b6076b423

  • SHA256

    59c441437848b229ccf0ea69598b83e3be1664779a9c7a71142e69fc73a005fc

  • SHA512

    f192f12c91174acf2571b02be9fb0e4e34d3c5501193316ca4845d2a2046a49cbc17ab64f5a33ccc7d905ae3c5da28073b3d8a86ce649d9e3dcb30d21e5f4ac6

Malware Config

Extracted

Family

xpertrat

Version

3.0.10

Botnet

special X

C2

ghytrty.duckdns.org:4145

spapertyy.duckdns.org:4145

Mutex

L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0

Signatures

  • UAC bypass 3 TTPs
  • Windows security bypass 2 TTPs
  • XpertRAT

    XpertRAT is a remote access trojan with various capabilities.

  • XpertRAT Core Payload 2 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 11 IoCs
  • Suspicious use of SetThreadContext 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0344d6ec47d85e81c4346f14bad096c4.exe
    "C:\Users\Admin\AppData\Local\Temp\0344d6ec47d85e81c4346f14bad096c4.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:792
    • C:\Users\Admin\AppData\Local\Temp\0344d6ec47d85e81c4346f14bad096c4.exe
      "C:\Users\Admin\AppData\Local\Temp\0344d6ec47d85e81c4346f14bad096c4.exe"
      2⤵
      • Windows security modification
      • Checks whether UAC is enabled
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:872
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        C:\Users\Admin\AppData\Local\Temp\0344d6ec47d85e81c4346f14bad096c4.exe
        3⤵
        • Adds policy Run key to start application
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:636
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf0.txt"
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1036
        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
          /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf1.txt"
          4⤵
            PID:1648
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf2.txt"
            4⤵
              PID:1916
            • C:\Program Files (x86)\Internet Explorer\iexplore.exe
              /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf3.txt"
              4⤵
                PID:1572
              • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                /stext "C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf4.txt"
                4⤵
                  PID:1984
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 1268 -s 1272
              2⤵
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:396

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf2.txt

            MD5

            f3b25701fe362ec84616a93a45ce9998

            SHA1

            d62636d8caec13f04e28442a0a6fa1afeb024bbb

            SHA256

            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

            SHA512

            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

          • C:\Users\Admin\AppData\Roaming\L3Q7I4T2-J8A6-K6O4-W4G3-T5J7D0W2V5E0\rqiwakxrf4.txt

            MD5

            f3b25701fe362ec84616a93a45ce9998

            SHA1

            d62636d8caec13f04e28442a0a6fa1afeb024bbb

            SHA256

            b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

            SHA512

            98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

          • memory/396-77-0x0000000000600000-0x0000000000601000-memory.dmp

            Filesize

            4KB

          • memory/396-70-0x0000000000000000-mapping.dmp

          • memory/636-71-0x0000000000400000-0x0000000000443000-memory.dmp

            Filesize

            268KB

          • memory/636-78-0x0000000075591000-0x0000000075593000-memory.dmp

            Filesize

            8KB

          • memory/636-73-0x0000000000620000-0x0000000000773000-memory.dmp

            Filesize

            1.3MB

          • memory/636-72-0x0000000000401364-mapping.dmp

          • memory/792-65-0x0000000000000000-mapping.dmp

          • memory/872-67-0x00000000004010B8-mapping.dmp

          • memory/872-66-0x0000000000400000-0x000000000042C000-memory.dmp

            Filesize

            176KB

          • memory/1036-80-0x0000000000423BC0-mapping.dmp

          • memory/1036-79-0x0000000000400000-0x0000000000426000-memory.dmp

            Filesize

            152KB

          • memory/1268-63-0x0000000000360000-0x00000000003A9000-memory.dmp

            Filesize

            292KB

          • memory/1268-60-0x0000000000920000-0x0000000000921000-memory.dmp

            Filesize

            4KB

          • memory/1268-62-0x0000000004600000-0x0000000004601000-memory.dmp

            Filesize

            4KB

          • memory/1428-64-0x0000000000000000-mapping.dmp

          • memory/1572-89-0x0000000000400000-0x0000000000416000-memory.dmp

            Filesize

            88KB

          • memory/1572-90-0x0000000000413750-mapping.dmp

          • memory/1648-82-0x0000000000400000-0x000000000041B000-memory.dmp

            Filesize

            108KB

          • memory/1648-83-0x0000000000411654-mapping.dmp

          • memory/1916-85-0x0000000000400000-0x0000000000459000-memory.dmp

            Filesize

            356KB

          • memory/1916-86-0x0000000000442F04-mapping.dmp

          • memory/1984-93-0x000000000040C2A8-mapping.dmp

          • memory/1984-92-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB