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Windows
Analysis Report
Zam#U00f3wienie 89118 _ Metal-Constructions.pdf.com.exe
Overview
General Information
| Sample name: | Zam#U00f3wienie 89118 _ Metal-Constructions.pdf.com.exerenamed because original name is a hash value |
| Original sample name: | Zamwienie 89118 _ Metal-Constructions.pdf.com.exe |
| Analysis ID: | 1557566 |
| MD5: | 1834eaa9099724ef4fe227478fed783a |
| SHA1: | 61176db35c4cda5a118bd4f3505d5bda26ebced0 |
| SHA256: | fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c |
| Tags: | exeuser-adrian__luca |
| Infos: |   |
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Detection
Quasar
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
Abnormal high CPU Usage
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
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)
Found large amount of non-executed APIs
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 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 a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
Zam#U00f3wienie 89118 _ Metal-Constructions.pdf.com.exe (PID: 716 cmdline: "C:\Users\ user\Deskt op\Zam#U00 f3wienie 8 9118 _ Met al-Constru ctions.pdf .com.exe" MD5: 1834EAA9099724EF4FE227478FED783A) - Zam#U00f3wienie 89118 _ Metal-Constructions.pdf.com.exe (PID: 876 cmdline:
"C:\Users\ user\Deskt op\Zam#U00 f3wienie 8 9118 _ Met al-Constru ctions.pdf .com.exe" MD5: 1834EAA9099724EF4FE227478FED783A) - schtasks.exe (PID: 6008 cmdline:
"schtasks" /create / tn "workbo ok" /sc ON LOGON /tr "C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " /rl HIGH EST /f MD5: 48C2FE20575769DE916F48EF0676A965) 
conhost.exe (PID: 3064 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - workbook.exe (PID: 4832 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: 1834EAA9099724EF4FE227478FED783A) - workbook.exe (PID: 2760 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: 1834EAA9099724EF4FE227478FED783A) - schtasks.exe (PID: 1096 cmdline:
"schtasks" /create / tn "workbo ok" /sc ON LOGON /tr "C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " /rl HIGH EST /f MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 1372 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- workbook.exe (PID: 3476 cmdline:
C:\Users\u ser\AppDat a\Roaming\ SubDir\wor kbook.exe MD5: 1834EAA9099724EF4FE227478FED783A) - workbook.exe (PID: 1208 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: 1834EAA9099724EF4FE227478FED783A)
- 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": "twart.myfirewall.org:9792;rency.ydns.eu:5287;wqo9.firewall-gateway.de:8841;", "SubDirectory": "SubDir", "InstallName": "workbook.exe", "MutexName": "02351e291-5d041-4fa37-932c7-869aeiQec514992", "StartupKey": "workbook", "Tag": "CODE", "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 13 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_Quasar | Yara detected Quasar RAT | 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 |
| |
| MALWARE_Win_QuasarStealer | Detects Quasar infostealer | ditekshen |
| |
| Click to see the 33 entries | ||||
System Summary |   |
|---|
| Source: | Author: Florian Roth (Nextron Systems): | ||
| Source: | Author: Florian Roth (Nextron Systems): | ||
| Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
|---|---|---|---|---|---|---|---|---|
| 2024-11-18T13:05:40.827770+0100 | 2035595 | 1 | Domain Observed Used for C2 Detected | 93.123.85.234 | 5287 | 192.168.2.6 | 49727 | TCP |
| Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
|---|---|---|---|---|---|---|---|---|
| 2024-11-18T13:05:40.827770+0100 | 2027619 | 1 | Domain Observed Used for C2 Detected | 93.123.85.234 | 5287 | 192.168.2.6 | 49727 | TCP |
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AV Detection | |
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| Source: | Malware Configuration Extractor: | ||