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Windows
Analysis Report
V9fubyadY6.exe
Overview
General Information
Sample name: | V9fubyadY6.exerenamed because original name is a hash value |
Original sample name: | 4e3692a35a3a1ae4e4b1613f9042e4d3.exe |
Analysis ID: | 1544043 |
MD5: | 4e3692a35a3a1ae4e4b1613f9042e4d3 |
SHA1: | 81e4b2203e11bd642bca309a76e43c8d8fbdcaac |
SHA256: | 3d64999908580361b2426500404c1198256cd6852c630f724525a3ea6a0afa56 |
Tags: | exeQuasarRATRATuser-abuse_ch |
Infos: | |
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
.NET source code references suspicious native API functions
AI detected suspicious sample
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Writes to foreign memory regions
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
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)
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
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
Yara signature match
Classification
- System is w10x64
- V9fubyadY6.exe (PID: 7468 cmdline:
"C:\Users\ user\Deskt op\V9fubya dY6.exe" MD5: 4E3692A35A3A1AE4E4B1613F9042E4D3) - RegAsm.exe (PID: 7492 cmdline:
#system32 MD5: 0D5DF43AF2916F47D00C1573797C1A13) - RegAsm.exe (PID: 7500 cmdline:
#system32 MD5: 0D5DF43AF2916F47D00C1573797C1A13) - RegAsm.exe (PID: 7508 cmdline:
#system32 MD5: 0D5DF43AF2916F47D00C1573797C1A13)
- 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": "164.90.236.65:5520;", "SubDirectory": "SubDir", "InstallName": "Client.exe", "MutexName": "e21de365-4ad7-41b0-9c44-b9d3fb6bfbb5", "StartupKey": "Quasar Client Startup", "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 | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
Click to see the 4 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Quasar | Yara detected Quasar RAT | 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 |
| |
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
Click to see the 18 entries |
⊘No Sigma rule has matched
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-28T18:42:01.173948+0100 | 2035595 | 1 | Domain Observed Used for C2 Detected | 164.90.236.65 | 5520 | 192.168.2.4 | 49730 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-10-28T18:42:01.173948+0100 | 2027619 | 1 | Domain Observed Used for C2 Detected | 164.90.236.65 | 5520 | 192.168.2.4 | 49730 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | Malware Configuration Extractor: |