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Windows
Analysis Report
rNuevoPedidoPO-00843.pdf.com.exe
Overview
General Information
| Sample name: | rNuevoPedidoPO-00843.pdf.com.exe |
| Analysis ID: | 1501404 |
| MD5: | fe0244480b7be035c478b4778d082ed3 |
| SHA1: | 8f13321bb29651c263227c7f796e85cb2527830e |
| SHA256: | a388e34ff2cb46b718c443618a4597468bfc2236195c06bccbfa71dbf5d47479 |
| Tags: | comexe |
| 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
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 inlined nop instructions (likely shell or obfuscated code)
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: 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
rNuevoPedidoPO-00843.pdf.com.exe (PID: 7744 cmdline: "C:\Users\ user\Deskt op\rNuevoP edidoPO-00 843.pdf.co m.exe" MD5: FE0244480B7BE035C478B4778D082ED3) - rNuevoPedidoPO-00843.pdf.com.exe (PID: 7904 cmdline:
"C:\Users\ user\Deskt op\rNuevoP edidoPO-00 843.pdf.co m.exe" MD5: FE0244480B7BE035C478B4778D082ED3) - schtasks.exe (PID: 7972 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: 7984 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - workbook.exe (PID: 8024 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3) - workbook.exe (PID: 4544 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3) - workbook.exe (PID: 7256 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3) - workbook.exe (PID: 7288 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3) - schtasks.exe (PID: 7560 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: 1652 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- workbook.exe (PID: 8132 cmdline:
C:\Users\u ser\AppDat a\Roaming\ SubDir\wor kbook.exe MD5: FE0244480B7BE035C478B4778D082ED3) - workbook.exe (PID: 5920 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3) - workbook.exe (PID: 6900 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3) - workbook.exe (PID: 6620 cmdline:
"C:\Users\ user\AppDa ta\Roaming \SubDir\wo rkbook.exe " MD5: FE0244480B7BE035C478B4778D082ED3)
- 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;", "SubDirectory": "SubDir", "InstallName": "workbook.exe", "MutexName": "0235e291-5d04-4fa3-932c-869aeec51499", "StartupKey": "workbook", "Tag": "Long Leg", "LogDirectoryName": "Logs", "ServerSignature": "XBBvS+rvDQy/NRA7cnb+1Bf2zFbsUHBtrkbS5j0N0VYcCxHngz7kKbyn5Jk5bqDEI6eX9AB+bIEClKSPSVh4o0tmRTlCyQR8n6K5WidNbCUdY2+XqfpKSeeSe+/39iGrb9ZLHaZnA9ciC9yC4PwnmFUO4AD6c2tNeWgm2PU1ohA9OikWzIuh/ks9RkLPCX2N5NbpAd+AvnufkOJwDLDXLT4MfcZlD2s7folRvVMxMcO7qQh4qI3ucP90WFCEokdbM4Rp3wOtslDricIMAIkAmogGRz4B5aLGHo+UKGsYDeV1bWBtzFi1XTWQ/6q4qfqiD4xLJpDFMICIRPNdK9raQkGcTP03+NhWNSswQU59I2Ar9A0CAUdysw34N2Kjm/UbGRrW3+j9kbJxMldClUDkeN0cGmVyyaiGpPUQBlBuqH620bBOymsxD3XZ6Ouxl9MgjTV6Il/iiq/NSebMLiET2K09Tvpmc/8DD8KLeu+5NrJnmChJat6LR2NCPqv1vp8xPgJNCm4DSv6HB78QRq0Ni/oqW7UBnQR4da5/ckoEk+1ZyMZ/TftczNdKaLoyii2gXx3EzDhVEQy9OH8iNQqevGPW/pTYqLGAkH4hRs0+kir9p7nSGZpHvgHSJL7DbCzKlTEYyAlb4VFoR4L+DhJ0+A8JWxhOkfSCX2jo3RVCcPs=", "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 14 entries | ||||
| 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 |
| |
| Click to see the 27 entries | ||||
System Summary |   |
|---|
| Source: | Author: Florian Roth (Nextron Systems): | ||
| Source: | Author: Florian Roth (Nextron Systems): | ||
| Timestamp: | 2024-08-29T21:36:29.045504+0200 |
| SID: | 2027619 |
| Severity: | 1 |
| Source Port: | 9792 |
| Destination Port: | 49724 |
| Protocol: | TCP |
| Classtype: | Domain Observed Used for C2 Detected |
| Timestamp: | 2024-08-29T21:36:29.045504+0200 |
| SID: | 2035595 |
| Severity: | 1 |
| Source Port: | 9792 |
| Destination Port: | 49724 |
| Protocol: | TCP |
| Classtype: | Domain Observed Used for C2 Detected |
Click to jump to signature section
Show All Signature Results
AV Detection | |
|---|
| Source: | Malware Configuration Extractor: | ||