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Windows
Analysis Report
3vYbe1bYFd.dll
Overview
General Information
| Sample Name: | 3vYbe1bYFd.dll |
| Analysis ID: | 631916 |
| MD5: | bf2f633fde70f181cc81fe6dffb048e7 |
| SHA1: | b3aedb0275ec4f55f21a2e672e87c96b36f38959 |
| SHA256: | 663127c151c31915e66da770d7e2109306f1e2bf12acce04bb3defcb0de92134 |
| Tags: | exe |
| Infos: |  |
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Detection
Emotet
| Score: | 84 |
| 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
Changes security center settings (notifications, updates, antivirus, firewall)
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
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
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
Sample execution stops while process was sleeping (likely an evasion)
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
AV process strings found (often used to terminate AV products)
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: 6316 cmdline: loaddll64. exe "C:\Us ers\user\D esktop\3vY be1bYFd.dl l" MD5: 4E8A40CAD6CCC047914E3A7830A2D8AA) 
cmd.exe (PID: 6332 cmdline: cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\3vY be1bYFd.dl l",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F) 
rundll32.exe (PID: 6352 cmdline: rundll32.e xe "C:\Use rs\user\De sktop\3vYb e1bYFd.dll ",#1 MD5: 73C519F050C20580F8A62C849D49215A) 
WerFault.exe (PID: 6532 cmdline: C:\Windows \system32\ WerFault.e xe -u -p 6 352 -s 324 MD5: 2AFFE478D86272288BBEF5A00BBEF6A0) - regsvr32.exe (PID: 6340 cmdline:
regsvr32.e xe /s C:\U sers\user\ Desktop\3v Ybe1bYFd.d ll MD5: D78B75FC68247E8A63ACBA846182740E) - regsvr32.exe (PID: 6452 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\SyeNst LIaswClq\b XSPARJszx. dll" MD5: D78B75FC68247E8A63ACBA846182740E) - rundll32.exe (PID: 6360 cmdline:
rundll32.e xe C:\User s\user\Des ktop\3vYbe 1bYFd.dll, AddIn_File Time MD5: 73C519F050C20580F8A62C849D49215A) - WerFault.exe (PID: 6544 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 6 360 -s 316 MD5: 2AFFE478D86272288BBEF5A00BBEF6A0) - rundll32.exe (PID: 6484 cmdline:
rundll32.e xe C:\User s\user\Des ktop\3vYbe 1bYFd.dll, AddIn_Syst emTime MD5: 73C519F050C20580F8A62C849D49215A) - rundll32.exe (PID: 6700 cmdline:
rundll32.e xe C:\User s\user\Des ktop\3vYbe 1bYFd.dll, DllRegiste rServer MD5: 73C519F050C20580F8A62C849D49215A)
- svchost.exe (PID: 7044 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 7088 cmdline:
C:\Windows \System32\ svchost.ex e -k Local SystemNetw orkRestric ted -p -s NcbService MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 7124 cmdline:
c:\windows \system32\ svchost.ex e -k local service -p -s CDPSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 4780 cmdline:
c:\windows \system32\ svchost.ex e -k netwo rkservice -p -s DoSv c MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 5084 cmdline:
C:\Windows \System32\ svchost.ex e -k Netwo rkService -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- SgrmBroker.exe (PID: 4264 cmdline:
C:\Windows \system32\ SgrmBroker .exe MD5: D3170A3F3A9626597EEE1888686E3EA6)
- svchost.exe (PID: 3808 cmdline:
c:\windows \system32\ svchost.ex e -k local servicenet workrestri cted -p -s wscsvc MD5: 32569E403279B3FD2EDB7EBD036273FA) 
MpCmdRun.exe (PID: 3756 cmdline: "C:\Progra m Files\Wi ndows Defe nder\mpcmd run.exe" - wdenable MD5: A267555174BFA53844371226F482B86B) - conhost.exe (PID: 244 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
- svchost.exe (PID: 2216 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6676 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 7024 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p 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: | Code function: | ||
Networking | |
|---|
| Source: | Network Connect: | ||
| 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: | ||