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Windows Analysis Report N40-MR 311.doc
Overview
General Information
Detection
AveMaria Nanocore
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Powershell download and execute file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected AveMaria stealer
Yara detected Nanocore RAT
.NET source code contains potential unpacker
Allocates memory in foreign processes
Bypasses PowerShell execution policy
Contains functionality to hide user accounts
Contains functionality to inject threads in other processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal e-mail passwords
Creates a thread in another existing process (thread injection)
Creates an undocumented autostart registry key
Document exploit detected (process start blacklist hit)
Found suspicious RTF objects
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides user accounts
Increases the number of concurrent connection per server for Internet Explorer
Injects a PE file into a foreign processes
Injects files into Windows application
Installs a global keyboard hook
Machine Learning detection for dropped file
Microsoft Office creates scripting files
Office process drops PE file
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: PowerShell DownloadFile
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to download and execute files (via powershell)
Uses dynamic DNS services
Writes to foreign memory regions
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Antivirus or Machine Learning detection for unpacked file
Contains functionality for execution timing, often used to detect debuggers
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to create new users
Contains functionality to detect virtual machines (SLDT)
Contains functionality to download and execute PE files
Contains functionality to download and launch executables
Contains functionality to dynamically determine API calls
Contains functionality to enumerate process and check for explorer.exe or svchost.exe (often used for thread injection)
Contains functionality to enumerate running services
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 locales information (e.g. system language)
Contains functionality to read the PEB
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 files inside the system directory
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Downloads executable code via HTTP
Drops PE files
Drops PE files to the application program directory (C:\ProgramData)
Drops PE files to the windows directory (C:\Windows)
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
Installs a raw input device (often for capturing keystrokes)
May sleep (evasive loops) to hinder dynamic analysis
Modifies existing windows services
PE file contains strange resources
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: Direct Autorun Keys Modification
Sigma detected: Exploit for CVE-2017-0261
Sigma detected: PowerShell Download from URL
Sigma detected: Verclsid.exe Runs COM Object
Spawns drivers
Uses Microsoft's Enhanced Cryptographic Provider
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses reg.exe to modify the Windows registry
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Yara signature match
Classification
Process Tree |
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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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Memory Dumps |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AveMaria | Yara detected AveMaria stealer | Joe Security | ||
JoeSecurity_Nanocore | Yara detected Nanocore RAT | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AveMaria | Yara detected AveMaria stealer | Joe Security | ||
Click to see the 52 entries |
Unpacked PEs |
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Source | Rule | Description | Author | Strings |
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MAL_Envrial_Jan18_1 | Detects Encrial credential stealer malware | Florian Roth |
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JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AveMaria | Yara detected AveMaria stealer | Joe Security | ||
AveMaria_WarZone | unknown | unknown |
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MAL_Envrial_Jan18_1 | Detects Encrial credential stealer malware | Florian Roth |
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Click to see the 33 entries |
Sigma Overview |
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System Summary: |
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Sigma detected: Microsoft Office Product Spawning Windows Shell | Show sources |
Source: | Author: Michael Haag, Florian Roth, Markus Neis, Elastic, FPT.EagleEye Team: |
Sigma detected: PowerShell DownloadFile | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: Direct Autorun Keys Modification | Show sources |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, oscd.community: |
Sigma detected: Exploit for CVE-2017-0261 | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: PowerShell Download from URL | Show sources |
Source: | Author: Florian Roth, oscd.community, Jonhnathan Ribeiro: |
Sigma detected: Verclsid.exe Runs COM Object | Show sources |
Source: | Author: Victor Sergeev, oscd.community: |
Sigma detected: Group Modification Logging | Show sources |
Source: | Author: Alexandr Yampolskyi, SOC Prime: |
Sigma detected: Local User Creation | Show sources |
Source: | Author: Patrick Bareiss: |
Sigma detected: Non Interactive PowerShell | Show sources |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Data Obfuscation: |
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Sigma detected: Powershell download and execute file | Show sources |
Source: | Author: Joe Security: |
Jbx Signature Overview |
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Click to jump to signature section
Show All Signature Results
AV Detection: |
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Antivirus detection for URL or domain | Show sources |
Source: | Avira URL Cloud: |
Multi AV Scanner detection for domain / URL | Show sources |
Source: | Virustotal: | Perma Link |
Multi AV Scanner detection for dropped file | Show sources |
Source: | Metadefender: | Perma Link | ||
Source: | ReversingLabs: | |||
Source: | Metadefender: | Perma Link | ||
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Source: | Metadefender: | Perma Link | ||
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Source: | Metadefender: | Perma Link | ||
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Source: | Metadefender: | Perma Link | ||
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Multi AV Scanner detection for submitted file | Show sources |
Source: | Virustotal: | Perma Link |
Yara detected AveMaria stealer | Show sources |
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Yara detected Nanocore RAT | Show sources |
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Machine Learning detection for dropped file | Show sources |
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Software Vulnerabilities: |
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Document exploit detected (creates forbidden files) | Show sources |
Source: | File created: | Jump to behavior | ||
Source: | File created: | Jump to behavior |
Document exploit detected (drops PE files) | Show sources |
Source: | File created: | Jump to dropped file |
Document exploit detected (process start blacklist hit) | Show sources |
Source: | Process created: |
Source: | DNS query: |
Source: | TCP traffic: |
Source: | TCP traffic: |
Networking: |
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Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) | Show sources |
Source: | Snort IDS: | ||
Source: | Snort IDS: | ||
Source: | Snort IDS: | ||
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Source: | Snort IDS: |
Uses dynamic DNS services | Show sources |
Source: | DNS query: |
Source: | Code function: |
Source: | TCP traffic: |
Source: | HTTP traffic detected: |