Analysis Report xuXIetZvv6.exe
Overview
General Information
Detection
AsyncRAT
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected AsyncRAT
Yara detected Powershell download and execute
Bypasses PowerShell execution policy
Contains functionality to detect sleep reduction / modifications
Drops PE files to the startup folder
Drops VBS files to the startup folder
Dynamically executes javascript script code
Machine Learning detection for sample
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sample or dropped binary is a compiled AutoHotkey binary
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Wscript starts Powershell (via cmd or directly)
AV process strings found (often used to terminate AV products)
Adds / modifies Windows certificates
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Contains capabilities to detect virtual machines
Contains functionality for read data from the clipboard
Contains functionality to block mouse and keyboard input (often used to hinder debugging)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to launch a process as a different user
Contains functionality to launch a program with higher privileges
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query CPU information (cpuid)
Contains functionality to query the security center for anti-virus and firewall products
Contains functionality to read the clipboard data
Contains functionality to record screenshots
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate keystroke presses
Contains functionality to simulate mouse events
Contains functionality which may be used to detect a debugger (GetProcessHeap)
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
Drops PE files to the application program directory (C:\ProgramData)
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 potential string decryption / allocating functions
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 if the current machine is a sandbox (GetTickCount - Sleep)
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
OS version to string mapping found (often used in BOTs)
PE file contains executable resources (Code or Archives)
PE file contains sections with non-standard names
PE file contains strange resources
Potential key logger detected (key state polling based)
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: Conhost Parent Process Executions
Stores files to the Windows start menu directory
Uses 32bit PE files
Uses cacls to modify the permissions of files
Uses code obfuscation techniques (call, push, ret)
Uses insecure TLS / SSL version for HTTPS connection
Uses the keyboard layout for branch decision (may execute only for specific keyboard layouts)
Uses the system / local time for branch decision (may execute only at specific dates)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara signature match
Classification
Startup |
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Malware Configuration |
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No configs have been found |
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Yara Overview |
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Initial Sample |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security |
Dropped Files |
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Source | Rule | Description | Author | Strings |
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SUSP_certificate_payload | Detects payloads that pretend to be certificates | Didier Stevens, Florian Roth |
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Molerats_Jul17_Sample_5 | Detects Molerats sample - July 2017 | Florian Roth |
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JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
Certutil_Decode_OR_Download | Certutil Decode | Florian Roth |
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Molerats_Jul17_Sample_5 | Detects Molerats sample - July 2017 | Florian Roth |
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Click to see the 1 entries |
Memory Dumps |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
JoeSecurity_AsyncRAT | Yara detected AsyncRAT | Joe Security | ||
JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
Molerats_Jul17_Sample_5 | Detects Molerats sample - July 2017 | Florian Roth |
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JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
Click to see the 12 entries |
Unpacked PEs |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
JoeSecurity_AsyncRAT | Yara detected AsyncRAT | Joe Security | ||
JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
JoeSecurity_AsyncRAT | Yara detected AsyncRAT | Joe Security | ||
JoeSecurity_PowershellDownloadAndExecute | Yara detected Powershell download and execute | Joe Security | ||
Click to see the 7 entries |
Sigma Overview |
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System Summary: |
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Sigma detected: Drops script at startup location | Show sources |
Source: | Author: Joe Security: |
Sigma detected: Conhost Parent Process Executions | Show sources |
Source: | Author: omkar72: |
Signature Overview |
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Click to jump to signature section
Show All Signature Results
AV Detection: |
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Multi AV Scanner detection for dropped file | Show sources |
Source: | Metadefender: | Perma Link | ||
Source: | ReversingLabs: |
Multi AV Scanner detection for submitted file | Show sources |
Source: | Virustotal: | Perma Link | ||
Source: | Metadefender: | Perma Link | ||
Source: | ReversingLabs: |
Machine Learning detection for sample | Show sources |
Source: | Joe Sandbox ML: |
Source: | Static PE information: |
Source: | HTTPS traffic detected: | ||
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Networking: |
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Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) | Show sources |
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Uses known network protocols on non-standard ports | Show sources |
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Source: | Code function: |
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Source: | Network traffic detected: | ||
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Key, Mouse, Clipboard, Microphone and Screen Capturing: |
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Yara detected AsyncRAT | Show sources |
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System Summary: |
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Malicious sample detected (through community Yara rule) | Show sources |
Source: | Matched rule: | ||
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Dynamically executes javascript script code | Show sources |
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Sample or dropped binary is a compiled AutoHotkey binary | Show sources |
Source: | Window found: |
Wscript starts Powershell (via cmd or directly) | Show sources |
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