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Windows
Analysis Report
kz7iLmqRuq.exe
Overview
General Information
Sample name: | kz7iLmqRuq.exerenamed because original name is a hash value |
Original sample name: | 4ebd63449193b8fdbd0c0315f8e33e10.exe |
Analysis ID: | 1477111 |
MD5: | 4ebd63449193b8fdbd0c0315f8e33e10 |
SHA1: | 31d7b7aee638dfdbfb2e2f009d27ad30637f5953 |
SHA256: | 7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2 |
Tags: | 32exe |
Infos: | |
Detection
Quasar
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Schedule system process
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected Quasar RAT
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Drops PE files with benign system names
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Potentially Suspicious Malware Callback Communication
Sigma detected: System File Execution Location Anomaly
Uses known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Connects to several IPs in different countries
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
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
HTTP GET or POST without a user agent
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)
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 execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: Communication To Uncommon Destination Ports
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Sigma detected: Uncommon Svchost Parent Process
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
- kz7iLmqRuq.exe (PID: 4508 cmdline:
"C:\Users\ user\Deskt op\kz7iLmq Ruq.exe" MD5: 4EBD63449193B8FDBD0C0315F8E33E10) - schtasks.exe (PID: 6616 cmdline:
"schtasks" /create / SC MINUTE /MO 1 /TN "svchost" /tr "C:\Us ers\user\D esktop\kz7 iLmqRuq.ex e" /rl HIG HEST /f MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 3044 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 792 cmdline:
"schtasks" /create / tn "svchos t" /sc ONL OGON /tr " C:\Users\u ser\Deskto p\kz7iLmqR uq.exe" /r l HIGHEST /f MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 7116 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - svchost.exe (PID: 5452 cmdline:
"C:\Users\ user\AppDa ta\Roaming \Microsoft Windows\s vchost.exe " MD5: 4EBD63449193B8FDBD0C0315F8E33E10) - schtasks.exe (PID: 6604 cmdline:
"schtasks" /create / SC MINUTE /MO 1 /TN "svchost" /tr "C:\Us ers\user\A ppData\Roa ming\Micro soft Windo ws\svchost .exe" /rl HIGHEST /f MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 2760 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 6612 cmdline:
"schtasks" /create / tn "svchos t" /sc ONL OGON /tr " C:\Users\u ser\AppDat a\Roaming\ Microsoft Windows\sv chost.exe" /rl HIGHE ST /f MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 5380 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- kz7iLmqRuq.exe (PID: 4220 cmdline:
C:\Users\u ser\Deskto p\kz7iLmqR uq.exe MD5: 4EBD63449193B8FDBD0C0315F8E33E10)
- 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": "1.4.0", "Host:Port": "45.66.231.154:45764;", "SubDirectory": "Microsoft Windows", "InstallName": "svchost.exe", "MutexName": "80038a66-0dbb-4135-8eb1-4ce5a34ce41b", "StartupKey": "svchost", "Tag": "Proxy", "LogDirectoryName": "svchostetw", "ServerSignature": "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", "ServerCertificate": "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"}
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 |
|
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 |
|
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 |
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 |
|
System Summary |
---|
Source: | Author: Sander Wiebing, Tim Shelton, Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems), Patrick Bareiss, Anton Kutepov, oscd.community, Nasreddine Bencherchali: |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: vburov: |
Persistence and Installation Behavior |
---|
Source: | Author: Joe Security: |
Timestamp: | 07/20/24-02:24:18.744560 |
SID: | 2035595 |
Source Port: | 57728 |
Destination Port: | 49943 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | Avira: |
Source: | Malware Configuration Extractor: |