Edit tour
Windows
Analysis Report
SecuriteInfo.com.BackDoor.QuasarNET.3.14065.23993.exe
Overview
General Information
Detection
Quasar
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected Quasar RAT
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for sample
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query CPU information (cpuid)
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found potential string decryption / allocating functions
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
PE / OLE file has an invalid certificate
PE file contains an invalid checksum
PE file contains sections with non-standard names
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample file is different than original file name gathered from version info
Uses 32bit PE files
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- SecuriteInfo.com.BackDoor.QuasarNET.3.14065.23993.exe (PID: 6976 cmdline:
"C:\Users\ user\Deskt op\Securit eInfo.com. BackDoor.Q uasarNET.3 .14065.239 93.exe" MD5: E3A6A985899B7B14DE0E539045FA8856)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Quasar RAT, QuasarRAT | Quasar RAT is a malware family written in .NET which is used by a variety of attackers. The malware is fully functional and open source, and is often packed to make analysis of the source more difficult. |
{"Version": "1.4.1", "Host:Port": "117.18.7.76:3782;", "SubDirectory": "SubDir", "InstallName": "Client.exe", "MutexName": "d908c8ed-ea88-484e-a3d2-dcbe66ac7cfc", "StartupKey": "Windows Client Startup", "Tag": "newoffice", "LogDirectoryName": "Logs", "ServerSignature": "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", "ServerCertificate": "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"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
Windows_Trojan_Donutloader_f40e3759 | unknown | unknown |
| |
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security | ||
MAL_QuasarRAT_May19_1 | Detects QuasarRAT malware | Florian Roth |
| |
Click to see the 4 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | Joe Security | ||
MAL_QuasarRAT_May19_1 | Detects QuasarRAT malware | Florian Roth |
| |
INDICATOR_SUSPICIOUS_GENInfoStealer | Detects executables containing common artifcats observed in infostealers | ditekSHen |
| |
MALWARE_Win_QuasarStealer | Detects Quasar infostealer | ditekshen |
| |
Click to see the 13 entries |
⊘No Sigma rule has matched
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-09-28T21:30:00.539942+0200 | 2035595 | 1 | Domain Observed Used for C2 Detected | 117.18.7.76 | 3782 | 192.168.2.4 | 49737 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-09-28T21:30:00.539942+0200 | 2027619 | 1 | Domain Observed Used for C2 Detected | 117.18.7.76 | 3782 | 192.168.2.4 | 49737 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
---|
Source: | Avira: |
Source: | Malware Configuration Extractor: |