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Windows
Analysis Report
________.exe
Overview
General Information
Sample name: | ________.exerenamed because original name is a hash value |
Original sample name: | New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe |
Analysis ID: | 1557955 |
MD5: | c28ef8671a7f140f9385ab177e38844b |
SHA1: | 4cc35c23f2ce252413249ecd2ea47967fc00d5a4 |
SHA256: | ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991 |
Tags: | exeuser-cocaman |
Infos: | |
Detection
Quasar
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
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: Drops script at startup location
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected Quasar RAT
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Contains functionality to call native functions
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates a start menu entry (Start Menu\Programs\Startup)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
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
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
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Stores files to the Windows start menu directory
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
- ________.exe (PID: 6912 cmdline:
"C:\Users\ user\Deskt op\_______ _.exe" MD5: C28EF8671A7F140F9385AB177E38844B) - InstallUtil.exe (PID: 3492 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57)
- wscript.exe (PID: 5848 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\Micro soft\Windo ws\Start M enu\Progra ms\Startup \StackTrac e.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - StackTrace.exe (PID: 6120 cmdline:
"C:\Users\ user\AppDa ta\Roaming \StackTrac e.exe" MD5: C28EF8671A7F140F9385AB177E38844B) - InstallUtil.exe (PID: 928 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57)
- 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": "aboushagor.ydns.eu:6542;", "SubDirectory": "SubDir", "InstallName": "windows update.exe", "MutexName": "0b30f45d-3c54-4926-a32f-8a1dc077eb21", "StartupKey": "svchost", "Tag": "Chim", "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_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_Quasar | Yara detected Quasar RAT | Joe Security | ||
Click to see the 18 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
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 |
| |
Click to see the 21 entries |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems), @blu3_team (idea), Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community: |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
Source: | Author: Michael Haag: |
Data Obfuscation |
---|
Source: | Author: Joe Security: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-18T19:24:06.301641+0100 | 2035595 | 1 | Domain Observed Used for C2 Detected | 69.174.98.113 | 6542 | 192.168.2.4 | 49731 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-18T19:24:06.301641+0100 | 2027619 | 1 | Domain Observed Used for C2 Detected | 69.174.98.113 | 6542 | 192.168.2.4 | 49731 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira URL Cloud: |
Source: | Malware Configuration Extractor: |