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Windows
Analysis Report
cclent.exe
Overview
General Information
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
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 dropped file
Machine Learning detection for sample
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)
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)
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
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: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Schtasks From Env Var Folder
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- cclent.exe (PID: 3536 cmdline:
"C:\Users\ user\Deskt op\cclent. exe" MD5: 94222631EF1071A4F7CEB180CF8A4A5A) - schtasks.exe (PID: 6628 cmdline:
"schtasks" /create / tn "vchost 32" /sc ON LOGON /tr "C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" /rl HIGHES T /f MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 1460 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - Client.exe (PID: 2356 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" MD5: 94222631EF1071A4F7CEB180CF8A4A5A) - schtasks.exe (PID: 6204 cmdline:
"schtasks" /create / tn "vchost 32" /sc ON LOGON /tr "C:\Users\ user\AppDa ta\Roaming \SubDir\Cl ient.exe" /rl HIGHES T /f MD5: 76CD6626DD8834BD4A42E6A565104DC2) - conhost.exe (PID: 2896 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- Client.exe (PID: 1132 cmdline:
C:\Users\u ser\AppDat a\Roaming\ SubDir\Cli ent.exe MD5: 94222631EF1071A4F7CEB180CF8A4A5A)
- 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": "91.92.243.191:5401;", "SubDirectory": "SubDir", "InstallName": "Client.exe", "MutexName": "fce41024-0e2f-475b-929b-e58a126341bd", "StartupKey": "vchost32", "Tag": "Office04", "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_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 | ||
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 |
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Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Florian Roth (Nextron Systems): |
⊘No Suricata rule has matched
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AV Detection |
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Source: | Avira: |
Source: | Avira: |
Source: | Malware Configuration Extractor: |