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Windows
Analysis Report
SecuriteInfo.com.Win32.CrypterX-gen.16043.3621.exe
Overview
General Information
| Sample Name: | SecuriteInfo.com.Win32.CrypterX-gen.16043.3621.exe |
| Analysis ID: | 756116 |
| MD5: | fe1aa7fa995970ebb34465d5dc0d8ce1 |
| SHA1: | 7505b261cc9df8c6ab8f10e035cf8d8319043cdb |
| SHA256: | 655b12a219d0f0e39a84fe44483e25411be852ce2bb0d451a1cb1a9a670f70b8 |
| Tags: | AgentTeslaexe |
| Infos: |   |
 | |
Detection
AgentTesla
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected AgentTesla
Yara detected AntiVM3
Sigma detected: Scheduled temp file as task from temp location
Multi AV Scanner detection for dropped file
Snort IDS alert for network traffic
Installs a global keyboard hook
Tries to steal Mail credentials (via file / registry access)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal ftp login credentials
.NET source code references suspicious native API functions
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
May check the online IP address of the machine
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large array initializations
Machine Learning detection for dropped file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Uses schtasks.exe or at.exe to add and modify task schedules
Tries to harvest and steal browser information (history, passwords, etc)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Yara detected Credential Stealer
JA3 SSL client fingerprint seen in connection with other malware
IP address seen in connection with other malware
Contains long sleeps (>= 3 min)
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
Drops PE files
Uses a known web browser user agent for HTTP communication
Detected TCP or UDP traffic on non-standard ports
Uses SMTP (mail sending)
Creates a window with clipboard capturing capabilities
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
- System is w10x64
SecuriteInfo.com.Win32.CrypterX-gen.16043.3621.exe (PID: 4580 cmdline: C:\Users\u ser\Deskto p\Securite Info.com.W in32.Crypt erX-gen.16 043.3621.e xe MD5: FE1AA7FA995970EBB34465D5DC0D8CE1) - schtasks.exe (PID: 5756 cmdline:
C:\Windows \System32\ schtasks.e xe" /Creat e /TN "Upd ates\nrQtA okXKaSn" / XML "C:\Us ers\user\A ppData\Loc al\Temp\tm p152E.tmp MD5: 15FF7D8324231381BAD48A052F85DF04) 
conhost.exe (PID: 5452 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) - SecuriteInfo.com.Win32.CrypterX-gen.16043.3621.exe (PID: 5688 cmdline:
{path} MD5: FE1AA7FA995970EBB34465D5DC0D8CE1) - SecuriteInfo.com.Win32.CrypterX-gen.16043.3621.exe (PID: 5900 cmdline:
{path} MD5: FE1AA7FA995970EBB34465D5DC0D8CE1)
- nrQtAokXKaSn.exe (PID: 5976 cmdline:
C:\Users\u ser\AppDat a\Roaming\ nrQtAokXKa Sn.exe MD5: FE1AA7FA995970EBB34465D5DC0D8CE1) - schtasks.exe (PID: 1372 cmdline:
C:\Windows \System32\ schtasks.e xe" /Creat e /TN "Upd ates\nrQtA okXKaSn" / XML "C:\Us ers\user\A ppData\Loc al\Temp\tm pCC0B.tmp MD5: 15FF7D8324231381BAD48A052F85DF04) - conhost.exe (PID: 3408 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) - nrQtAokXKaSn.exe (PID: 2744 cmdline:
{path} MD5: FE1AA7FA995970EBB34465D5DC0D8CE1) - nrQtAokXKaSn.exe (PID: 1008 cmdline:
{path} MD5: FE1AA7FA995970EBB34465D5DC0D8CE1)
- cleanup
{"Exfil Mode": "SMTP", "Host": "mail.strictfacilityservices.com", "Username": "accounts@strictfacilityservices.com", "Password": "SFS!@#321"}| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
| JoeSecurity_AgentTesla_2 | Yara detected AgentTesla | Joe Security | ||
| Windows_Trojan_AgentTesla_d3ac2b2f | unknown | unknown |
| |
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| Click to see the 13 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
| JoeSecurity_AgentTesla_2 | Yara detected AgentTesla | Joe Security | ||
| MALWARE_Win_AgentTeslaV3 | AgentTeslaV3 infostealer payload | ditekSHen |
| |
| Windows_Trojan_AgentTesla_d3ac2b2f | unknown | unknown |
| |
| INDICATOR_SUSPICIOUS_DisableWinDefender | Detects executables containing artifcats associated with disabling Widnows Defender | ditekSHen |
| |
| Click to see the 13 entries | ||||
Persistence and Installation Behavior |   |
|---|
| Source: | Author: Joe Security: | ||
| Timestamp: | 192.168.2.6111.118.212.38497175872030171 11/29/22-16:51:24.449797 |
| SID: | 2030171 |
| Source Port: | 49717 |
| Destination Port: | 587 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 192.168.2.6111.118.212.38497225872030171 11/29/22-16:52:18.188399 |
| SID: | 2030171 |
| Source Port: | 49722 |
| Destination Port: | 587 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection | |
|---|
| Source: | ReversingLabs: | ||
| Source: | ReversingLabs: | ||
| Source: | Joe Sandbox ML: | ||
| Source: | Joe Sandbox ML: | ||
| Source: | Avira: | ||
| Source: | Malware Configuration Extractor: | ||
| Source: | Static PE information: | ||
| Source: | HTTPS traffic detected: | ||
| Source: | HTTPS traffic detected: | ||
| Source: | Static PE information: | ||
| Source: | Binary string: | ||
Networking | |
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| Source: | Snort IDS: | ||
| Source: | Snort IDS: | ||
| Source: | DNS query: | ||
| Source: | DNS query: | ||
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| Source: | DNS query: | ||
| Source: | JA3 fingerprint: | ||
| Source: | IP Address: | ||
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| Source: | HTTP traffic detected: | ||
| Source: | HTTP traffic detected: | ||
| Source: | TCP traffic: | ||
| Source: | TCP traffic: | ||
| Source: | Network traffic detected: | ||
| Source: | Network traffic detected: | ||
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| Source: | String found in binary or memory: | ||
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