Windows
Analysis Report
SecuriteInfo.com.Win32.CrypterX-gen.25378.7586.exe
Overview
General Information
Detection
AgentTesla
Score: | 100 |
Range: | 0 - 100 |
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: Drops script at startup location
Yara detected AgentTesla
Yara detected AntiVM3
.NET source code contains potential unpacker
Contains functionality to log keystrokes (.Net Source)
Drops VBS files to the startup folder
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Uses ipconfig to lookup or modify the Windows network settings
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Allocates memory with a write watch (potentially for evading sandboxes)
Contains functionality to call native functions
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates a start menu entry (Start Menu\Programs\Startup)
Creates files inside the system directory
Detected non-DNS traffic on DNS port
Detected potential crypto function
Drops PE files
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 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 sleep (evasive loops) to hinder dynamic analysis
PE / OLE file has an invalid certificate
Queries disk information (often used to detect virtual machines)
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: Suspicious Execution of Powershell with Base64
Sigma detected: Suspicious Outbound SMTP Connections
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Stores files to the Windows start menu directory
Uses 32bit PE files
Uses SMTP (mail sending)
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
SecuriteInfo.com.Win32.CrypterX-gen.25378.7586.exe (PID: 6332 cmdline:
"C:\Users\ user\Deskt op\Securit eInfo.com. Win32.Cryp terX-gen.2 5378.7586. exe" MD5: 449C6834FBE66F37711D1DE4666B3E48) cmd.exe (PID: 4140 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /release MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 6752 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) ipconfig.exe (PID: 4724 cmdline:
ipconfig / release MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) powershell.exe (PID: 4124 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -enc QQBkA GQALQBNAHA AUAByAGUAZ gBlAHIAZQB uAGMAZQAgA C0ARQB4AGM AbAB1AHMAa QBvAG4AUAB hAHQAaAAgA EMAOgBcAFU AcwBlAHIAc wBcAGYAcgB vAG4AdABkA GUAcwBrAFw ARABlAHMAa wB0AG8AcAB cAFMAZQBjA HUAcgBpAHQ AZQBJAG4AZ gBvAC4AYwB vAG0ALgBXA GkAbgAzADI ALgBDAHIAe QBwAHQAZQB yAFgALQBnA GUAbgAuADI ANQAzADcAO AAuADcANQA 4ADYALgBlA HgAZQA7ACA AQQBkAGQAL QBNAHAAUAB yAGUAZgBlA HIAZQBuAGM AZQAgAC0AR QB4AGMAbAB 1AHMAaQBvA G4AUAByAG8 AYwBlAHMAc wAgAEMAOgB cAFUAcwBlA HIAcwBcAGY AcgBvAG4Ad ABkAGUAcwB rAFwARABlA HMAawB0AG8 AcABcAFMAZ QBjAHUAcgB pAHQAZQBJA G4AZgBvAC4 AYwBvAG0AL gBXAGkAbgA zADIALgBDA HIAeQBwAHQ AZQByAFgAL QBnAGUAbgA uADIANQAzA DcAOAAuADc ANQA4ADYAL gBlAHgAZQA 7AEEAZABkA C0ATQBwAFA AcgBlAGYAZ QByAGUAbgB jAGUAIAAtA EUAeABjAGw AdQBzAGkAb wBuAFAAYQB 0AGgAIABDA DoAXABVAHM AZQByAHMAX ABmAHIAbwB uAHQAZABlA HMAawBcAEE AcABwAEQAY QB0AGEAXAB SAG8AYQBtA GkAbgBnAFw AcABhAGcAZ QAuAGUAeAB lADsAIABBA GQAZAAtAE0 AcABQAHIAZ QBmAGUAcgB lAG4AYwBlA CAALQBFAHg AYwBsAHUAc wBpAG8AbgB QAHIAbwBjA GUAcwBzACA AQwA6AFwAV QBzAGUAcgB zAFwAZgByA G8AbgB0AGQ AZQBzAGsAX ABBAHAAcAB EAGEAdABhA FwAUgBvAGE AbQBpAG4AZ wBcAHAAYQB nAGUALgBlA HgAZQA= MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) conhost.exe (PID: 5692 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) WmiPrvSE.exe (PID: 5476 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) InstallUtil.exe (PID: 2560 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57) cmd.exe (PID: 2436 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /renew MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 5456 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) ipconfig.exe (PID: 2752 cmdline:
ipconfig / renew MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB)
svchost.exe (PID: 7092 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: B7F884C1B74A263F746EE12A5F7C9F6A)
wscript.exe (PID: 6904 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\Micro soft\Windo ws\Start M enu\Progra ms\Startup \page.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) page.exe (PID: 5732 cmdline:
"C:\Users\ user\AppDa ta\Roaming \page.exe" MD5: 449C6834FBE66F37711D1DE4666B3E48) cmd.exe (PID: 7284 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /release MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 7292 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) ipconfig.exe (PID: 7336 cmdline:
ipconfig / release MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) InstallUtil.exe (PID: 7444 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57) cmd.exe (PID: 7476 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /renew MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 7484 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) ipconfig.exe (PID: 7540 cmdline:
ipconfig / renew MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB)
- 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": "25", "Host": "mail.iaa-airferight.com", "Username": "admin@iaa-airferight.com", "Password": "manlikeyou88"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
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 | ||
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
Click to see the 28 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
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 |
| |
Click to see the 12 entries |
System Summary |
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Source: | Author: Jonathan Cheong, oscd.community: |
Source: | Author: Jonathan Cheong, oscd.community: |
Source: | Author: Florian Roth (Nextron Systems): |