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Windows
Analysis Report
lz3EbiqoK4.exe
Overview
General Information
Sample name: | lz3EbiqoK4.exerenamed because original name is a hash value |
Original sample name: | 33C2ADEBFE2C3ACEDFB34FFFF8151B7D.exe |
Analysis ID: | 1571838 |
MD5: | 33c2adebfe2c3acedfb34ffff8151b7d |
SHA1: | 8e93f7ecafa92017a7d528423574ab5cfeec754a |
SHA256: | 773e13fffd0842e717ce55e2a678da37123c55186f9c92460c671261b1654ffd |
Tags: | exeQuasarRATRATuser-abuse_ch |
Infos: | |
Detection
Quasar
Score: | 88 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Malicious sample detected (through community Yara rule)
Yara detected Quasar RAT
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 functionality for read data from the clipboard
Contains functionality to shutdown / reboot the system
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Deletes files inside the Windows folder
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Drops PE files to the windows directory (C:\Windows)
Drops certificate files (DER)
Drops files with a non-matching file extension (content does not match file extension)
Enables debug privileges
Found dropped PE file which has not been started or loaded
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE file contains executable resources (Code or Archives)
PE file contains more sections than normal
PE file contains sections with non-standard names
PE file does not import any functions
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: Installation of TeamViewer Desktop
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious desktop.ini Action
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- lz3EbiqoK4.exe (PID: 7312 cmdline:
"C:\Users\ user\Deskt op\lz3Ebiq oK4.exe" MD5: 33C2ADEBFE2C3ACEDFB34FFFF8151B7D) - Client-built.exe (PID: 7464 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\Client -built.exe " MD5: 181719B653C83D0463D89A625A7F5C3E) - TeamViewer_Setup_x64.exe (PID: 7772 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\TeamVi ewer_Setup _x64.exe" MD5: D15511E4B90CC6729FEDAF86D080D1F6) - TeamViewer_.exe (PID: 7820 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\nsz461 8.tmp\nsu4 696\TeamVi ewer_.exe" MD5: 8318FC63158C01368AADC6D4BE89FAD1) - schtasks.exe (PID: 7912 cmdline:
C:\Windows \system32\ schtasks / Create /TN TVInstall Restore /T R "\"C:\Pr ogram File s\TeamView er\Rollbac kTemp\Team Viewer_.ex e\" /RESTO RE" /RU SY STEM /SC O NLOGON /F MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7920 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - schtasks.exe (PID: 332 cmdline:
C:\Windows \system32\ schtasks / Delete /TN TVInstall Restore /F MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 2872 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- TeamViewer_.exe (PID: 7968 cmdline:
"C:\Progra m Files\Te amViewer\R ollbackTem p\TeamView er_.exe" / RESTORE MD5: 8318FC63158C01368AADC6D4BE89FAD1) - schtasks.exe (PID: 8092 cmdline:
C:\Windows \system32\ schtasks / Delete /TN TVInstall Restore /F MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 8104 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- 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": "167.71.56.116:22269;", "SubDirectory": "SubDir", "InstallName": "Client.exe", "MutexName": "3470ac31-30aa-4cf6-ab0a-1ed0dd64656f", "StartupKey": "Quasar Client Startup", "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 |
|
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: frack113: |
Source: | Author: Florian Roth (Nextron Systems): |
Source: | Author: Maxime Thiebaut (@0xThiebaut), Tim Shelton (HAWK.IO): |
⊘No Suricata rule has matched
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AV Detection |
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Source: | Malware Configuration Extractor: |