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Windows
Analysis Report
SecuriteInfo.com.Win32.PWSX-gen.4960.23508.exe
Overview
General Information
Detection
AgentTesla
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Scheduled temp file as task from temp location
Yara detected AgentTesla
Yara detected AntiVM3
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
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)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
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
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, 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)
Sample file is different than original file name gathered from version info
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Add Scheduled Task Parent
Sigma detected: Suspicious Outbound SMTP Connections
Sigma detected: Suspicious Schtasks From Env Var Folder
Tries to load missing DLLs
Uses 32bit PE files
Uses SMTP (mail sending)
Uses code obfuscation techniques (call, push, ret)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
- SecuriteInfo.com.Win32.PWSX-gen.4960.23508.exe (PID: 5244 cmdline:
C:\Users\u ser\Deskto p\Securite Info.com.W in32.PWSX- gen.4960.2 3508.exe MD5: 2D291BAEDB79EE55DAA67417103F0905) - powershell.exe (PID: 6984 cmdline:
C:\Windows \System32\ WindowsPow erShell\v1 .0\powersh ell.exe" A dd-MpPrefe rence -Exc lusionPath "C:\Users \user\Desk top\Securi teInfo.com .Win32.PWS X-gen.4960 .23508.exe MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 5084 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 5332 cmdline:
C:\Windows \System32\ WindowsPow erShell\v1 .0\powersh ell.exe" A dd-MpPrefe rence -Exc lusionPath "C:\Users \user\AppD ata\Roamin g\lnYkIr.e xe MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 1084 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WmiPrvSE.exe (PID: 7424 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) - schtasks.exe (PID: 5060 cmdline:
C:\Windows \System32\ schtasks.e xe" /Creat e /TN "Upd ates\lnYkI r" /XML "C :\Users\us er\AppData \Local\Tem p\tmp9C71. tmp MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 3620 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - SecuriteInfo.com.Win32.PWSX-gen.4960.23508.exe (PID: 7276 cmdline:
C:\Users\u ser\Deskto p\Securite Info.com.W in32.PWSX- gen.4960.2 3508.exe MD5: 2D291BAEDB79EE55DAA67417103F0905)
- lnYkIr.exe (PID: 7344 cmdline:
C:\Users\u ser\AppDat a\Roaming\ lnYkIr.exe MD5: 2D291BAEDB79EE55DAA67417103F0905) - schtasks.exe (PID: 7656 cmdline:
C:\Windows \System32\ schtasks.e xe" /Creat e /TN "Upd ates\lnYkI r" /XML "C :\Users\us er\AppData \Local\Tem p\tmpADC6. tmp MD5: 48C2FE20575769DE916F48EF0676A965) - conhost.exe (PID: 7664 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - lnYkIr.exe (PID: 7708 cmdline:
C:\Users\u ser\AppDat a\Roaming\ lnYkIr.exe MD5: 2D291BAEDB79EE55DAA67417103F0905)
- 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": "SMTP", "Port": "587", "Host": "us2.smtp.mailhostbox.com", "Username": "laju.varghese@grupocatqla.com", "Password": ")Ivlmuj5"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | 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 18 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 |
| |
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security |