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Windows
Analysis Report
Pago SEPA.pdf.exe
Overview
General Information
Detection
GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Early bird code injection technique detected
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension File Execution
Yara detected GuLoader
AI detected suspicious sample
Found suspicious powershell code related to unpacking or dynamic code loading
Initial sample is a PE file and has a suspicious name
Loading BitLocker PowerShell Module
Queues an APC in another process (thread injection)
Tries to harvest and steal browser information (history, passwords, etc)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to shutdown / reboot the system
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
IP address seen in connection with other malware
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
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: Msiexec Initiated Connection
Suricata IDS alerts with low severity for network traffic
Uses 32bit PE files
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64
- Pago SEPA.pdf.exe (PID: 3792 cmdline:
"C:\Users\ user\Deskt op\Pago SE PA.pdf.exe " MD5: B09A414939191D7F43C114C02726DDB9) - powershell.exe (PID: 6508 cmdline:
"powershel l.exe" -wi ndowstyle minimized "$Alkamine 36=Get-Con tent -Raw 'C:\Users\ user\AppDa ta\Local\s kydedrene\ Nitallerne s\sammenli mningers\M ultipara16 8.Sel';$pr eallocator s=$Alkamin e36.SubStr ing(1880,3 );.$preall ocators($A lkamine36) " MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 6648 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - msiexec.exe (PID: 3668 cmdline:
"C:\Window s\SysWOW64 \msiexec.e xe" MD5: 9D09DC1EDA745A5F87553048E57620CF) - WmiPrvSE.exe (PID: 2472 cmdline:
C:\Windows \sysWOW64\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 64ACA4F48771A5BA50CD50F2410632AD)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
CloudEyE, GuLoader | CloudEyE (initially named GuLoader) is a small VB5/6 downloader. It typically downloads RATs/Stealers, such as Agent Tesla, Arkei/Vidar, Formbook, Lokibot, Netwire and Remcos, often but not always from Google Drive. The downloaded payload is xored. | No Attribution |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_GuLoader_2 | Yara detected GuLoader | Joe Security |
System Summary |
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Source: | Author: Florian Roth (Nextron Systems), @blu3_team (idea), Nasreddine Bencherchali (Nextron Systems): |
Source: | Author: frack113: |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-15T17:21:11.502558+0100 | 2803274 | 2 | Potentially Bad Traffic | 192.168.2.5 | 49967 | 162.55.60.2 | 80 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-15T17:21:03.979116+0100 | 2803270 | 2 | Potentially Bad Traffic | 192.168.2.5 | 49928 | 104.168.32.140 | 80 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | ReversingLabs: |
Source: | Integrated Neural Analysis Model: |
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Source: | Code function: | 0_2_00406362 | |
Source: | Code function: | 0_2_00405810 | |
Source: | Code function: | 0_2_004027FB |
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Source: | HTTP traffic detected: | ||
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Source: | Code function: | 0_2_004052BD |
System Summary |
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Source: | Static PE information: |
Source: | Code function: | 0_2_0040326A |
Source: | Code function: | 0_2_004066E3 | |
Source: | Code function: | 0_2_00404AFA | |
Source: | Code function: | 2_2_0484DE58 |
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