Analysis

  • max time kernel
    149s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2024, 01:07

General

  • Target
    23c0b428d61929b59cfe72e088c4917153124e8b8a0d8d321a8b2c59194e2977.exe
  • Size 1.7MB
  • Sample240223-bgrzcahf86
  • SHA256 23c0b428d61929b59cfe72e088c4917153124e8b8a0d8d321a8b2c59194e2977
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect ZGRat V1 2 IoCs
  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • ModiLoader Second Stage 6 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Script User-Agent 2 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\23c0b428d61929b59cfe72e088c4917153124e8b8a0d8d321a8b2c59194e2977.exe
    "C:\Users\Admin\AppData\Local\Temp\23c0b428d61929b59cfe72e088c4917153124e8b8a0d8d321a8b2c59194e2977.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2776
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Libraries\EnnvkysoO.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3976
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c mkdir "\\?\C:\Windows "
        3⤵
          PID:1152
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
          3⤵
            PID:4396
          • C:\Windows\SysWOW64\xcopy.exe
            xcopy "easinvoker.exe" "C:\Windows \System32\" /K /D /H /Y
            3⤵
            • Enumerates system info in registry
            PID:412
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
            3⤵
              PID:432
            • C:\Windows\SysWOW64\xcopy.exe
              xcopy "netutils.dll" "C:\Windows \System32\" /K /D /H /Y
              3⤵
              • Enumerates system info in registry
              PID:1000
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
              3⤵
                PID:4820
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "KDECO.bat" "C:\Windows \System32\" /K /D /H /Y
                3⤵
                • Enumerates system info in registry
                PID:4924
              • C:\Windows\SysWOW64\xcopy.exe
                xcopy "x.bat" "C:\Windows \System32\" /K /D /H /Y
                3⤵
                • Enumerates system info in registry
                PID:4252
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" ECHO F"
                3⤵
                  PID:4292
                • C:\Windows \System32\easinvoker.exe
                  "C:\\Windows \\System32\\easinvoker.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:2556
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4948
                    • C:\Windows\system32\cmd.exe
                      cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:708
                      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                        powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
                        6⤵
                        • Suspicious use of AdjustPrivilegeToken
                        PID:1876
                    • C:\Windows\system32\sc.exe
                      sc.exe create truesight binPath="C:\Users\Public\Libraries\truesight.sys" type=kernel
                      5⤵
                      • Launches sc.exe
                      PID:3864
                    • C:\Windows\system32\sc.exe
                      sc.exe start truesight
                      5⤵
                      • Launches sc.exe
                      PID:4928
              • C:\Windows\SysWOW64\cmd.exe
                cmd /c "C:\\Windows \\System32\\easinvoker.exe"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:4188
                • C:\Windows \System32\easinvoker.exe
                  "C:\\Windows \\System32\\easinvoker.exe"
                  3⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:4440
              • C:\Users\Public\Libraries\osykvnnE.pif
                C:\Users\Public\Libraries\osykvnnE.pif
                2⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                PID:3328

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  __PSScriptPolicyTest_krzlbj4v.cg5.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_krzlbj4v.cg5.ps1
                  • Size 60B
                  • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                  • MD5 SHA1 SHA512

                  EnnvkysoO.bat

                  • Path C:\Users\Public\Libraries\EnnvkysoO.bat
                  • Size 7KB
                  • SHA256 f46e0cc2c119a32dd87edf97bfc73d985ee97d2c9dc00274b6b20d641e29deea
                  • MD5 SHA1 SHA512 SSDEEP

                  KDECO.bat

                  • Path C:\Users\Public\Libraries\KDECO.bat
                  • Size 4KB
                  • SHA256 c8e1912a3328802e98563e32eb053ae3e28249b701054af227e9f1ba6bfe24d9
                  • MD5 SHA1 SHA512 SSDEEP

                  easinvoker.exe

                  • Path C:\Users\Public\Libraries\easinvoker.exe
                  • Size 128KB
                  • SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
                  • MD5 SHA1 SHA512 SSDEEP

                  netutils.dll

                  • Path C:\Users\Public\Libraries\netutils.dll
                  • Size 115KB
                  • SHA256 ae33f291a6f2011ca147c2b48035743aba3c507dcef86e1fa6acb4dee47cbf43
                  • MD5 SHA1 SHA512 SSDEEP

                  osykvnnE.pif

                  • Path C:\Users\Public\Libraries\osykvnnE.pif
                  • Size 66KB
                  • SHA256 7bcdc2e607abc65ef93afd009c3048970d9e8d1c2a18fc571562396b13ebb301
                  • MD5 SHA1 SHA512 SSDEEP

                  memory/1876-38-0x000001F4B7710000-0x000001F4B7720000-memory.dmp

                  memory/1876-33-0x000001F4B77E0000-0x000001F4B7802000-memory.dmp

                  memory/1876-37-0x00007FFDFA1B0000-0x00007FFDFAC71000-memory.dmp

                  memory/1876-39-0x000001F4B7710000-0x000001F4B7720000-memory.dmp

                  memory/1876-42-0x00007FFDFA1B0000-0x00007FFDFAC71000-memory.dmp

                  memory/2556-25-0x00000000613C0000-0x00000000613E3000-memory.dmp

                  memory/2776-16-0x0000000000400000-0x00000000005C0000-memory.dmp

                  memory/2776-2-0x0000000004550000-0x0000000005550000-memory.dmp

                  memory/2776-1-0x0000000004550000-0x0000000005550000-memory.dmp

                  memory/2776-0-0x0000000002470000-0x0000000002471000-memory.dmp

                  memory/3328-52-0x0000000000400000-0x0000000001400000-memory.dmp

                  memory/3328-61-0x00000000287F0000-0x0000000028800000-memory.dmp

                  memory/3328-49-0x0000000000400000-0x0000000001400000-memory.dmp

                  memory/3328-54-0x0000000000400000-0x0000000001400000-memory.dmp

                  memory/3328-56-0x0000000025F70000-0x0000000025FC0000-memory.dmp

                  memory/3328-57-0x0000000028800000-0x0000000028DA4000-memory.dmp

                  memory/3328-58-0x0000000028670000-0x00000000286BE000-memory.dmp

                  memory/3328-59-0x0000000000400000-0x0000000001400000-memory.dmp

                  memory/3328-60-0x0000000028DB0000-0x0000000028E16000-memory.dmp

                  memory/3328-62-0x00000000287F0000-0x0000000028800000-memory.dmp

                  memory/3328-63-0x00000000287F0000-0x0000000028800000-memory.dmp

                  memory/3328-75-0x0000000074B00000-0x00000000752B0000-memory.dmp

                  memory/3328-64-0x0000000074B00000-0x00000000752B0000-memory.dmp

                  memory/3328-65-0x0000000029DA0000-0x0000000029DF0000-memory.dmp

                  memory/3328-66-0x0000000029DF0000-0x0000000029E8C000-memory.dmp

                  memory/3328-67-0x0000000029F40000-0x0000000029FD2000-memory.dmp

                  memory/3328-68-0x000000002A140000-0x000000002A14A000-memory.dmp

                  memory/3328-69-0x0000000000400000-0x0000000000446000-memory.dmp

                  memory/3328-71-0x0000000000400000-0x0000000001400000-memory.dmp

                  memory/3328-72-0x00000000287F0000-0x0000000028800000-memory.dmp

                  memory/3328-73-0x00000000287F0000-0x0000000028800000-memory.dmp

                  memory/3328-74-0x00000000287F0000-0x0000000028800000-memory.dmp

                  memory/4440-53-0x00000000613C0000-0x00000000613E3000-memory.dmp