Analysis

  • max time kernel
    151s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 13:06

General

  • Target

    a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe

  • Size

    537KB

  • MD5

    6eea4637a917ac8b4a5965f7b789c3c8

  • SHA1

    7b1ae62323ceaecf8c52e0e40016d8224f4eca0e

  • SHA256

    a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787

  • SHA512

    8589114d48f29efc0eb5299452847a90e449db477d0cf297b5ca8724d39c8eb4bc5e73ca593bb9985f3dac12420ae892e1154fcce37509beec4f2fccafcef6de

  • SSDEEP

    12288:071HbqID8zy1coOwSOqwbk/Da22Uy77Gr3SyPI4jUWpD9:OOXo4DCnKrmkt7

Malware Config

Signatures

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • Nirsoft 9 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe
    "C:\Users\Admin\AppData\Local\Temp\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GoogleUpdate" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:472
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GoogleUpdate" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe.lnk"
        3⤵
        • Adds Run key to start application
        PID:1500
    • C:\Users\Admin\AppData\Local\Temp\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe
      "C:\Users\Admin\AppData\Local\Temp\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\logff.txt"
        3⤵
          PID:612
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe" "C:\Users\Admin\AppData\Roaming\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe" /y
          3⤵
            PID:1672
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\mRef.vbs"
            3⤵
              PID:2044
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
              C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\logmail.txt"
              3⤵
              • Accesses Microsoft Outlook accounts
              PID:1188

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Execution

        Scripting

        1
        T1064

        Persistence

        Registry Run Keys / Startup Folder

        1
        T1060

        Defense Evasion

        Scripting

        1
        T1064

        Modify Registry

        1
        T1112

        Credential Access

        Credentials in Files

        2
        T1081

        Discovery

        System Information Discovery

        2
        T1082

        Query Registry

        1
        T1012

        Collection

        Data from Local System

        2
        T1005

        Email Collection

        1
        T1114

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\logff.txt
          Filesize

          2B

          MD5

          f3b25701fe362ec84616a93a45ce9998

          SHA1

          d62636d8caec13f04e28442a0a6fa1afeb024bbb

          SHA256

          b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

          SHA512

          98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

        • C:\Users\Admin\AppData\Local\Temp\mRef.vbs
          Filesize

          476B

          MD5

          c0ba376bb94c6da63a36deb055d87000

          SHA1

          ea872dcd8edb96fd03505a02a0bf55e1953a36e9

          SHA256

          0a994c9a6d8a0c5ac9c8d02ca9e8608f658629eaac1dc9d9e4aeb5dfacce6ad4

          SHA512

          6da41ef918b55851bf47fe0dd93dce7bbe12ef195409fd4085770a9cb749741d0616dbe35722e8fbb8c7d1918b1513bf921ee4e475192712de35c5f024351c5a

        • C:\Users\Admin\AppData\Roaming\a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787.exe
          Filesize

          537KB

          MD5

          6eea4637a917ac8b4a5965f7b789c3c8

          SHA1

          7b1ae62323ceaecf8c52e0e40016d8224f4eca0e

          SHA256

          a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787

          SHA512

          8589114d48f29efc0eb5299452847a90e449db477d0cf297b5ca8724d39c8eb4bc5e73ca593bb9985f3dac12420ae892e1154fcce37509beec4f2fccafcef6de

        • \Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe
          Filesize

          537KB

          MD5

          6eea4637a917ac8b4a5965f7b789c3c8

          SHA1

          7b1ae62323ceaecf8c52e0e40016d8224f4eca0e

          SHA256

          a6f9d8513672e7db039e557426899ec5aa49d4544dcf858139487d6b0ae05787

          SHA512

          8589114d48f29efc0eb5299452847a90e449db477d0cf297b5ca8724d39c8eb4bc5e73ca593bb9985f3dac12420ae892e1154fcce37509beec4f2fccafcef6de

        • memory/472-60-0x0000000000000000-mapping.dmp
        • memory/612-80-0x000000000040E7FA-mapping.dmp
        • memory/612-79-0x0000000000400000-0x0000000000418000-memory.dmp
          Filesize

          96KB

        • memory/612-85-0x0000000000400000-0x0000000000418000-memory.dmp
          Filesize

          96KB

        • memory/612-87-0x0000000000400000-0x0000000000418000-memory.dmp
          Filesize

          96KB

        • memory/1188-96-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB

        • memory/1188-99-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB

        • memory/1188-95-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB

        • memory/1188-92-0x0000000000411654-mapping.dmp
        • memory/1188-91-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB

        • memory/1192-71-0x0000000074280000-0x000000007482B000-memory.dmp
          Filesize

          5.7MB

        • memory/1192-72-0x0000000002356000-0x0000000002367000-memory.dmp
          Filesize

          68KB

        • memory/1192-54-0x0000000074D71000-0x0000000074D73000-memory.dmp
          Filesize

          8KB

        • memory/1192-58-0x0000000002356000-0x0000000002367000-memory.dmp
          Filesize

          68KB

        • memory/1192-57-0x0000000074280000-0x000000007482B000-memory.dmp
          Filesize

          5.7MB

        • memory/1192-56-0x0000000002356000-0x0000000002367000-memory.dmp
          Filesize

          68KB

        • memory/1192-55-0x0000000074280000-0x000000007482B000-memory.dmp
          Filesize

          5.7MB

        • memory/1500-61-0x0000000000000000-mapping.dmp
        • memory/1672-82-0x0000000000000000-mapping.dmp
        • memory/1680-63-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/1680-69-0x0000000000451916-mapping.dmp
        • memory/1680-100-0x0000000002266000-0x0000000002277000-memory.dmp
          Filesize

          68KB

        • memory/1680-77-0x0000000073CD0000-0x000000007427B000-memory.dmp
          Filesize

          5.7MB

        • memory/1680-75-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/1680-73-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/1680-68-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/1680-78-0x0000000073CD0000-0x000000007427B000-memory.dmp
          Filesize

          5.7MB

        • memory/1680-66-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/1680-65-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/1680-97-0x0000000073CD0000-0x000000007427B000-memory.dmp
          Filesize

          5.7MB

        • memory/1680-98-0x0000000002266000-0x0000000002277000-memory.dmp
          Filesize

          68KB

        • memory/1680-62-0x0000000000400000-0x0000000000458000-memory.dmp
          Filesize

          352KB

        • memory/2044-86-0x0000000000000000-mapping.dmp