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Windows
Analysis Report
W3XqCWvDWC.dll
Overview
General Information
| Sample Name: | W3XqCWvDWC.dll |
| Analysis ID: | 631906 |
| MD5: | 661a35a77c56679722f7180fc4add7ba |
| SHA1: | 81041189ebf61ed4220f4cea933465cc28d48f57 |
| SHA256: | 1abc2d91d10d8a44bcc6ce69334f992e5304f3dcb48fe8328d888a25f3228c8d |
| Tags: | exetrojan |
| Infos: |  |
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Detection
Emotet
| Score: | 80 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Yara detected Emotet
System process connects to network (likely due to code injection or exploit)
Multi AV Scanner detection for domain / URL
Machine Learning detection for sample
Hides that the sample has been downloaded from the Internet (zone.identifier)
Queries the volume information (name, serial number etc) of a device
One or more processes crash
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Deletes files inside the Windows folder
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Found evasive API chain (may stop execution after checking a module file name)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to dynamically determine API calls
IP address seen in connection with other malware
PE file contains an invalid checksum
Tries to load missing DLLs
Drops PE files to the windows directory (C:\Windows)
Detected TCP or UDP traffic on non-standard ports
Checks if the current process is being debugged
Registers a DLL
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Queries disk information (often used to detect virtual machines)
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Classification
- System is w10x64
loaddll64.exe (PID: 7148 cmdline: loaddll64. exe "C:\Us ers\user\D esktop\W3X qCWvDWC.dl l" MD5: 4E8A40CAD6CCC047914E3A7830A2D8AA) 
cmd.exe (PID: 6160 cmdline: cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\W3X qCWvDWC.dl l",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F) 
rundll32.exe (PID: 4668 cmdline: rundll32.e xe "C:\Use rs\user\De sktop\W3Xq CWvDWC.dll ",#1 MD5: 73C519F050C20580F8A62C849D49215A) 
WerFault.exe (PID: 3608 cmdline: C:\Windows \system32\ WerFault.e xe -u -p 4 668 -s 340 MD5: 2AFFE478D86272288BBEF5A00BBEF6A0) - regsvr32.exe (PID: 6304 cmdline:
regsvr32.e xe /s C:\U sers\user\ Desktop\W3 XqCWvDWC.d ll MD5: D78B75FC68247E8A63ACBA846182740E) - regsvr32.exe (PID: 1012 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\ZDZEtu lZzZAlvF\W FoCkDI.dll " MD5: D78B75FC68247E8A63ACBA846182740E) - rundll32.exe (PID: 5156 cmdline:
rundll32.e xe C:\User s\user\Des ktop\W3XqC WvDWC.dll, AddIn_File Time MD5: 73C519F050C20580F8A62C849D49215A) - WerFault.exe (PID: 1836 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 5 156 -s 328 MD5: 2AFFE478D86272288BBEF5A00BBEF6A0) - rundll32.exe (PID: 4360 cmdline:
rundll32.e xe C:\User s\user\Des ktop\W3XqC WvDWC.dll, AddIn_Syst emTime MD5: 73C519F050C20580F8A62C849D49215A) - rundll32.exe (PID: 6520 cmdline:
rundll32.e xe C:\User s\user\Des ktop\W3XqC WvDWC.dll, DllRegiste rServer MD5: 73C519F050C20580F8A62C849D49215A)
- svchost.exe (PID: 6384 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6664 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6072 cmdline:
C:\Windows \System32\ svchost.ex e -k Local SystemNetw orkRestric ted -p -s NcbService MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6472 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 5964 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 4988 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6240 cmdline:
C:\Windows \system32\ svchost.ex e -k wusvc s -p -s Wa aSMedicSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
- cleanup
⊘No configs have been found
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| Click to see the 11 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
| Click to see the 11 entries | ||||
⊘No Sigma rule has matched
⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |   |
|---|
| Source: | Virustotal: | Perma Link | ||
| Source: | ReversingLabs: | |||
| Source: | Virustotal: | Perma Link | ||
| Source: | Joe Sandbox ML: | ||
| Source: | Static PE information: | ||
| Source: | Binary string: | ||
| Source: | Code function: | 8_2_000000018000BEF0 | |
Networking | |
|---|
| Source: | Network Connect: | Jump to behavior | ||
| Source: | ASN Name: | ||
| Source: | IP Address: | ||
| Source: | TCP traffic: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | TCP traffic detected without corresponding DNS query: | ||
| Source: | String found in binary or memory: | ||
| Source: | String found in binary or memory: | ||
| Source: | String found in binary or memory: | ||