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Windows
Analysis Report
SecuriteInfo.com.UDS.Trojan-Downloader.Win32.GuLoader.gen.21079.exe
Overview
General Information
| Sample Name: | SecuriteInfo.com.UDS.Trojan-Downloader.Win32.GuLoader.gen.21079.exe |
| Analysis ID: | 635379 |
| MD5: | e2e4196b84fdf8956baa7f99b11812af |
| SHA1: | 7af0382928364f2fc088d13f96394f4d83bd01ae |
| SHA256: | 7004d20bac532e4a93f138bae6da90223d850992fd1c88ba176bc9349b802c6a |
| Infos: |  |
 | |
Detection
AgentTesla, GuLoader
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Found malware configuration
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected AgentTesla
Yara detected GuLoader
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to detect Any.run
Tries to harvest and steal ftp login credentials
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
C2 URLs / IPs found in malware configuration
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Yara detected Credential Stealer
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Contains functionality for execution timing, often used to detect debuggers
Contains long sleeps (>= 3 min)
Abnormal high CPU Usage
Enables debug privileges
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 strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Detected TCP or UDP traffic on non-standard ports
Checks if the current process is being debugged
Uses SMTP (mail sending)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality for read data from the clipboard
Classification
- System is w10x64native
SecuriteInfo.com.UDS.Trojan-Downloader.Win32.GuLoader.gen.21079.exe (PID: 7720 cmdline: "C:\Users\ user\Deskt op\Securit eInfo.com. UDS.Trojan -Downloade r.Win32.Gu Loader.gen .21079.exe " MD5: E2E4196B84FDF8956BAA7F99B11812AF) 
CasPol.exe (PID: 8356 cmdline: "C:\Users\ user\Deskt op\Securit eInfo.com. UDS.Trojan -Downloade r.Win32.Gu Loader.gen .21079.exe " MD5: 914F728C04D3EDDD5FBA59420E74E56B) 
conhost.exe (PID: 4512 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68)
- cleanup
{"Exfil Mode": "SMTP", "SMTP Info": "fugen.ozkunt@paralikgroup.comFug1966Ozkmail.paralikgroup.comsaleseuropower2@yandex.com"}{"Payload URL": "http://artist151sh.com/paralikgroup%20ori%204_vJdEAWVzP17.bin"}| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_GuLoader_2 | Yara detected GuLoader | Joe Security | ||
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| MALWARE_Win_AgentTeslaV3 | AgentTeslaV3 infostealer payload | ditekSHen |
| |
| JoeSecurity_GuLoader_2 | Yara detected GuLoader | 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: | Malware Configuration Extractor: | ||
| Source: | Malware Configuration Extractor: | ||
| Source: | Virustotal: | Perma Link | ||
| Source: | Static PE information: | ||
| Source: | Static PE information: | ||
| Source: | Binary string: | ||
| Source: | Binary string: | ||
| Source: | Code function: | ||
| Source: | Code function: | ||
| Source: | Code function: | ||
Networking | |
|---|
| Source: | URLs: | ||
| Source: | ASN Name: | ||
| Source: | ASN Name: | ||
| Source: | HTTP traffic detected: | ||
| Source: | TCP traffic: | ||
| Source: | TCP traffic: | ||
| Source: | UDP traffic detected without corresponding DNS query: | ||
| Source: | UDP traffic detected without corresponding DNS query: | ||
| Source: | String found in binary or memory: | ||