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Windows
Analysis Report
PO_111101111001.js
Overview
General Information
| Sample name: | PO_111101111001.js |
| Analysis ID: | 1641301 |
| MD5: | 984ab95962169d6866f83e5ac3a18dcf |
| SHA1: | a8878632a281723efcfab0dba45bb8bde09f0ca7 |
| SHA256: | c5963972b61874eb1381324ed1bfefa927fc2acacc6ad789356e3bc32b92ebd1 |
| Tags: | AgentTeslajsuser-abuse_ch |
| Infos: |   |
 | |
Detection
AgentTesla
| Score: | 100 |
| Range: | 0 - 100 |
| Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Found malware configuration
JScript performs obfuscated calls to suspicious functions
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
System process connects to network (likely due to code injection or exploit)
Yara detected AgentTesla
Allocates memory in foreign processes
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
JavaScript source code contains functionality to generate code involving HTTP requests or file downloads
JavaScript source code contains functionality to generate code involving a shell, file or stream
PE file contains section with special chars
PE file has nameless sections
Potential obfuscated javascript found
Powershell drops PE file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Checks if the current process is being debugged
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected non-DNS traffic on DNS port
Detected potential crypto function
Downloads executable code via HTTP
Dropped file seen in connection with other malware
Drops PE files
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 dropped PE file which has not been started or loaded
Found inlined nop instructions (likely shell or obfuscated code)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
PE file contains sections with non-standard names
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, 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)
Sigma detected: AspNetCompiler Execution
Sigma detected: Script Initiated Connection
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
wscript.exe (PID: 7260 cmdline: C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\PO_11 1101111001 .js" MD5: A47CBE969EA935BDD3AB568BB126BC80) 
powershell.exe (PID: 8152 cmdline: "C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -NoProfile -Executio nPolicy Re moteSigned -File "C: \Temp\WTRT RWFSHS.ps1 " MD5: 04029E121A0CFA5991749937DD22A1D9) 
conhost.exe (PID: 8160 cmdline: C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) 
QWQWSAADAF.exe (PID: 2976 cmdline: "C:\Users\ user\AppDa ta\Local\T emp\QWQWSA ADAF.exe" MD5: 509DA2F325053AC8CFC07C6EDDE04DE6) - aspnet_compiler.exe (PID: 5376 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\asp net_compil er.exe" MD5: FDA8C8F2A4E100AFB14C13DFCBCAB2D2)
- cleanup
| Name | Description | Attribution | Blogpost URLs | Link |
|---|---|---|---|---|
| Agent Tesla, AgentTesla | A .NET based information stealer readily available to actors due to leaked builders. The malware is able to log keystrokes, can access the host's clipboard and crawls the disk for credentials or other valuable information. It has the capability to send information back to its C&C via HTTP(S), SMTP, FTP, or towards a Telegram channel. |
{
"Exfil Mode": "FTP",
"Host": "ftp://176.65.144.3",
"Username": "admin",
"Password": "Admin56@@"
}| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security |
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| Click to see the 7 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
| INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID | Detects executables referencing Windows vault credential objects. Observed in infostealers | ditekSHen |
| |
| MALWARE_Win_AgentTeslaV2 | AgenetTesla Type 2 Keylogger payload | ditekSHen |
| |
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| Click to see the 7 entries | ||||
System Summary |   |
|---|
| Source: | Author: frack113, Florian Roth: | ||
| Source: | Author: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community: | ||
| Source: | Author: frack113: | ||
| Source: | Author: frack113: | ||
| Source: | Author: Michael Haag: | ||
| Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): | ||
| Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
|---|---|---|---|---|---|---|---|---|
| 2025-03-18T08:03:19.242426+0100 | 2018856 | 1 | A Network Trojan was detected | 176.65.144.3 | 80 | 192.168.2.4 | 49721 | TCP |
- • AV Detection
- • Compliance
- • Software Vulnerabilities
- • Networking
- • Key, Mouse, Clipboard, Microphone and Screen Capturing
- • System Summary
- • Data Obfuscation
- • Persistence and Installation Behavior
- • Hooking and other Techniques for Hiding and Protection
- • Malware Analysis System Evasion
- • Anti Debugging
- • HIPS / PFW / Operating System Protection Evasion
- • Language, Device and Operating System Detection
- • Stealing of Sensitive Information
- • Remote Access Functionality
Click to jump to signature section
Show All Signature Results
AV Detection | |
|---|
| Source: | Avira: | ||
| Source: | Avira: | ||
| Source: | Malware Configuration Extractor: | ||
| Source: | ReversingLabs: | ||
| Source: | ReversingLabs: | ||
| Source: | Binary string: | ||
| Source: | Binary string: | ||
Software Vulnerabilities | |
|---|
| Source: | Return value : | Go to definition | ||
| Source: | Argument value : | Go to definition | ||
| Source: | Return value : | Go to definition | ||
| Source: | Child: | ||
| Source: | Code function: | 11_2_00CF4B20 | |
| Source: | Code function: | 11_2_00CF4B20 | |
Networking | |
|---|
| Source: | Suricata IDS: | ||
| Source: | Network Connect: | Jump to behavior | ||
| Source: | Return value : | Go to definition | ||
| Source: | Argument value : | Go to definition | ||
| Source: | Argument value : | Go to definition | ||
| Source: | Argument value : | Go to definition | ||
| Source: | Return value : | Go to definition | ||
| Source: | TCP traffic: | ||
| Source: | HTTP traffic detected: | ||