Analysis

  • max time kernel
    124s
  • max time network
    159s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    15-10-2021 22:31

General

  • Target

    92b1cc02d037151eecedb276cee54e94ffcb6fb748d0c8a86c8f10522fef9fb5.exe

  • Size

    727KB

  • MD5

    687ce85a38cc8ca331e63a87a3c5cb9e

  • SHA1

    70da69b8fe9adbafbbccd38da2e71dd7121e9108

  • SHA256

    92b1cc02d037151eecedb276cee54e94ffcb6fb748d0c8a86c8f10522fef9fb5

  • SHA512

    92808823a009e5599d742d0fb522c3db732e35d05fb3a287871a43bbebed8284aa2a60ef574c46a65b0af67a662dea2d7c772a5d0890876336b773b95dbd9cdc

Malware Config

Extracted

Family

vidar

Version

41.4

Botnet

1008

C2

https://mas.to/@sslam

Attributes
  • profile_id

    1008

Signatures

  • ServHelper

    ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Grants admin privileges 1 TTPs

    Uses net.exe to modify the user's privileges.

  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Modifies RDP port number used by Windows 1 TTPs
  • Sets DLL path for service in the registry 2 TTPs
  • Loads dropped DLL 2 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies registry key 1 TTPs 1 IoCs
  • NTFS ADS 4 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\92b1cc02d037151eecedb276cee54e94ffcb6fb748d0c8a86c8f10522fef9fb5.exe
    "C:\Users\Admin\AppData\Local\Temp\92b1cc02d037151eecedb276cee54e94ffcb6fb748d0c8a86c8f10522fef9fb5.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\ProgramData\UWQP7K70EYNJMAB6.exe
      "C:\ProgramData\UWQP7K70EYNJMAB6.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3536
      • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
        "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1188
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
          4⤵
          • Drops file in System32 directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2120
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\m5z3opnl\m5z3opnl.cmdline"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3764
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
              C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESB571.tmp" "c:\Users\Admin\AppData\Local\Temp\m5z3opnl\CSCF5AFECB2F38B4FD8807DE6863923A1DA.TMP"
              6⤵
                PID:2644
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2208
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3372
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1300
            • C:\Windows\SysWOW64\reg.exe
              "C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
              5⤵
                PID:3152
              • C:\Windows\SysWOW64\reg.exe
                "C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
                5⤵
                • Modifies registry key
                PID:3168
              • C:\Windows\SysWOW64\reg.exe
                "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
                5⤵
                  PID:1772
                • C:\Windows\SysWOW64\net.exe
                  "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                  5⤵
                  • Suspicious use of WriteProcessMemory
                  PID:3560
                  • C:\Windows\SysWOW64\net1.exe
                    C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                    6⤵
                      PID:3968
                  • C:\Windows\SysWOW64\cmd.exe
                    "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
                    5⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2152
                    • C:\Windows\SysWOW64\cmd.exe
                      cmd /c net start rdpdr
                      6⤵
                      • Suspicious use of WriteProcessMemory
                      PID:3392
                      • C:\Windows\SysWOW64\net.exe
                        net start rdpdr
                        7⤵
                        • Suspicious use of WriteProcessMemory
                        PID:3552
                        • C:\Windows\SysWOW64\net1.exe
                          C:\Windows\system32\net1 start rdpdr
                          8⤵
                            PID:688
                    • C:\Windows\SysWOW64\cmd.exe
                      "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
                      5⤵
                      • Suspicious use of WriteProcessMemory
                      PID:2004
                      • C:\Windows\SysWOW64\cmd.exe
                        cmd /c net start TermService
                        6⤵
                        • Suspicious use of WriteProcessMemory
                        PID:2584
                        • C:\Windows\SysWOW64\net.exe
                          net start TermService
                          7⤵
                            PID:2212
                            • C:\Windows\SysWOW64\net1.exe
                              C:\Windows\system32\net1 start TermService
                              8⤵
                                PID:700
                        • C:\Windows\SysWOW64\cmd.exe
                          "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
                          5⤵
                            PID:824
                          • C:\Windows\SysWOW64\cmd.exe
                            "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
                            5⤵
                              PID:1796
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -u -p 1720 -s 2232
                        2⤵
                        • Program crash
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious use of AdjustPrivilegeToken
                        PID:2816

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • memory/1188-145-0x0000000000400000-0x000000000080B000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/1188-140-0x0000000000400000-0x000000000080B000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/1188-150-0x0000000005E30000-0x0000000005E31000-memory.dmp

                      Filesize

                      4KB

                    • memory/1188-136-0x0000000000400000-0x000000000080B000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/1188-149-0x0000000005483000-0x0000000005484000-memory.dmp

                      Filesize

                      4KB

                    • memory/1188-142-0x00000000058A0000-0x0000000005C9F000-memory.dmp

                      Filesize

                      4.0MB

                    • memory/1188-148-0x0000000005482000-0x0000000005483000-memory.dmp

                      Filesize

                      4KB

                    • memory/1188-146-0x0000000005484000-0x0000000005485000-memory.dmp

                      Filesize

                      4KB

                    • memory/1188-147-0x0000000005480000-0x0000000005481000-memory.dmp

                      Filesize

                      4KB

                    • memory/1300-724-0x0000000004F22000-0x0000000004F23000-memory.dmp

                      Filesize

                      4KB

                    • memory/1300-723-0x0000000004F20000-0x0000000004F21000-memory.dmp

                      Filesize

                      4KB

                    • memory/1300-819-0x000000007EAE0000-0x000000007EAE1000-memory.dmp

                      Filesize

                      4KB

                    • memory/1720-116-0x0000000003480000-0x0000000003556000-memory.dmp

                      Filesize

                      856KB

                    • memory/1720-117-0x0000000000400000-0x0000000001729000-memory.dmp

                      Filesize

                      19.2MB

                    • memory/1720-115-0x0000000001769000-0x00000000017E5000-memory.dmp

                      Filesize

                      496KB

                    • memory/2120-164-0x0000000008770000-0x0000000008771000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-172-0x00000000093D0000-0x00000000093D1000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-159-0x00000000076F0000-0x00000000076F1000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-160-0x0000000007630000-0x0000000007631000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-162-0x0000000007F90000-0x0000000007F91000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-163-0x00000000083C0000-0x00000000083C1000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-158-0x0000000005072000-0x0000000005073000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-165-0x00000000086B0000-0x00000000086B1000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-156-0x0000000007720000-0x0000000007721000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-167-0x0000000003180000-0x0000000003181000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-171-0x0000000009D60000-0x0000000009D61000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-182-0x0000000005073000-0x0000000005074000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-1157-0x000000007F100000-0x000000007F101000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-155-0x0000000004F00000-0x0000000004F01000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-153-0x0000000003180000-0x0000000003181000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-203-0x00000000097C0000-0x00000000097C1000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-154-0x0000000003180000-0x0000000003181000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-157-0x0000000005070000-0x0000000005071000-memory.dmp

                      Filesize

                      4KB

                    • memory/2120-180-0x0000000009460000-0x0000000009461000-memory.dmp

                      Filesize

                      4KB

                    • memory/2208-213-0x0000000004832000-0x0000000004833000-memory.dmp

                      Filesize

                      4KB

                    • memory/2208-206-0x0000000002C80000-0x0000000002C81000-memory.dmp

                      Filesize

                      4KB

                    • memory/2208-205-0x0000000002C80000-0x0000000002C81000-memory.dmp

                      Filesize

                      4KB

                    • memory/2208-211-0x0000000004830000-0x0000000004831000-memory.dmp

                      Filesize

                      4KB

                    • memory/2208-276-0x000000007EAC0000-0x000000007EAC1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3372-468-0x00000000071C0000-0x00000000071C1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3372-469-0x00000000071C2000-0x00000000071C3000-memory.dmp

                      Filesize

                      4KB

                    • memory/3372-495-0x000000007F9F0000-0x000000007F9F1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-128-0x00000000059B0000-0x00000000059B1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-126-0x0000000004FB0000-0x0000000004FB1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-125-0x0000000005410000-0x0000000005411000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-130-0x0000000006470000-0x0000000006491000-memory.dmp

                      Filesize

                      132KB

                    • memory/3536-127-0x0000000005050000-0x0000000005051000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-134-0x0000000008CC0000-0x0000000008CCB000-memory.dmp

                      Filesize

                      44KB

                    • memory/3536-123-0x0000000000010000-0x0000000000011000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-132-0x00000000064E0000-0x00000000064E1000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-131-0x0000000006520000-0x0000000006521000-memory.dmp

                      Filesize

                      4KB

                    • memory/3536-129-0x0000000004F10000-0x000000000540E000-memory.dmp

                      Filesize

                      5.0MB

                    • memory/3536-133-0x0000000004F10000-0x000000000540E000-memory.dmp

                      Filesize

                      5.0MB

                    • memory/3536-135-0x0000000008CE0000-0x0000000008CE1000-memory.dmp

                      Filesize

                      4KB