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Windows
Analysis Report
lc4KFeS296
Overview
General Information
| Sample Name: | lc4KFeS296 (renamed file extension from none to dll) |
| Analysis ID: | 626480 |
| MD5: | 3b2d00898cf67a9cb3eec176d700d8bb |
| SHA1: | 1cc8bb45a9900ecfaa4372dad23b58d2a4e5b371 |
| SHA256: | 96b69b7693636ea4882b665d6668e160743bf6951d112ad4504a05fb3cbddcd0 |
| 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)
Antivirus detection for URL or domain
Changes security center settings (notifications, updates, antivirus, firewall)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Queries the volume information (name, serial number etc) of a device
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query locales information (e.g. system language)
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
Sample execution stops while process was sleeping (likely an evasion)
Found evasive API chain (may stop execution after checking a module file name)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
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)
Checks if the current process is being debugged
Registers a DLL
Queries disk information (often used to detect virtual machines)
Creates a process in suspended mode (likely to inject code)
Classification
- System is w10x64
loaddll64.exe (PID: 6276 cmdline: loaddll64. exe "C:\Us ers\user\D esktop\lc4 KFeS296.dl l" MD5: 4E8A40CAD6CCC047914E3A7830A2D8AA) 
cmd.exe (PID: 6284 cmdline: cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\lc4 KFeS296.dl l",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F) 
rundll32.exe (PID: 6316 cmdline: rundll32.e xe "C:\Use rs\user\De sktop\lc4K FeS296.dll ",#1 MD5: 73C519F050C20580F8A62C849D49215A) - regsvr32.exe (PID: 6436 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\LJYuxy MqHk\HxAOz CvVHW.dll" MD5: D78B75FC68247E8A63ACBA846182740E) - regsvr32.exe (PID: 6304 cmdline:
regsvr32.e xe /s C:\U sers\user\ Desktop\lc 4KFeS296.d ll MD5: D78B75FC68247E8A63ACBA846182740E) - rundll32.exe (PID: 6324 cmdline:
rundll32.e xe C:\User s\user\Des ktop\lc4KF eS296.dll, DllRegiste rServer MD5: 73C519F050C20580F8A62C849D49215A) - rundll32.exe (PID: 6488 cmdline:
rundll32.e xe C:\User s\user\Des ktop\lc4KF eS296.dll, DllUnregis terServer MD5: 73C519F050C20580F8A62C849D49215A)
- svchost.exe (PID: 6836 cmdline:
C:\Windows \System32\ svchost.ex e -k Local SystemNetw orkRestric ted -p -s NcbService MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6884 cmdline:
c:\windows \system32\ svchost.ex e -k local service -p -s CDPSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6948 cmdline:
c:\windows \system32\ svchost.ex e -k netwo rkservice -p -s DoSv c MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6992 cmdline:
C:\Windows \System32\ svchost.ex e -k Netwo rkService -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- SgrmBroker.exe (PID: 7068 cmdline:
C:\Windows \system32\ SgrmBroker .exe MD5: D3170A3F3A9626597EEE1888686E3EA6)
- svchost.exe (PID: 7092 cmdline:
c:\windows \system32\ svchost.ex e -k local servicenet workrestri cted -p -s wscsvc MD5: 32569E403279B3FD2EDB7EBD036273FA) 
MpCmdRun.exe (PID: 2508 cmdline: "C:\Progra m Files\Wi ndows Defe nder\mpcmd run.exe" - wdenable MD5: A267555174BFA53844371226F482B86B) - conhost.exe (PID: 2560 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
- svchost.exe (PID: 5832 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6392 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6156 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 6660 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
- svchost.exe (PID: 3400 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 3 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 3 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: | Avira URL Cloud: | ||
| Source: | HTTPS traffic detected: | ||
| Source: | Static PE information: | ||
| Source: | Binary string: | ||
| Source: | Binary string: | ||
| Source: | Code function: | 5_2_000000018000D26C | |
Networking | |
|---|
| Source: | Network Connect: | Jump to behavior | ||
| Source: | ASN Name: | ||
| Source: | JA3 fingerprint: | ||
| Source: | HTTP traffic detected: | ||
| Source: | IP Address: | ||
| Source: | Network traffic detected: | ||
| Source: | Network traffic detected: | ||
| 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: | ||