MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a32812ea87167fe0a9275823f6c873984de4dc7ece43895f02a175826aeecdce. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



AgentTesla


Vendor detections: 13


Intelligence 13 IOCs YARA 3 File information Comments

SHA256 hash: a32812ea87167fe0a9275823f6c873984de4dc7ece43895f02a175826aeecdce
SHA3-384 hash: f2688e637835f810b733cbbf322645f04d995a472e9f2e356afffeb555b9583e0d70802f308fcbfc40a2f5d9a93b4bd4
SHA1 hash: d7ae7fe00152e5866085ec1f88ac13444c0601e8
MD5 hash: 1ee3bd3b907b4bde213232fd180781d8
humanhash: louisiana-cardinal-friend-stairway
File name:solicitud de cotizacin0078433.xla
Download: download sample
Signature AgentTesla
File size:587'776 bytes
First seen:2024-02-21 13:08:46 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 12288:pkk+SEXMcbNedomzEB3bVVATMIW0py/4cd5UuWwDDe56:MSSMMednEB3bV0pyfyOe
TLSH T1C7C40245FA818B06F46A47704EF38E8B5329FD425B628A4F310CF71E7EB07A45E17A25
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:AgentTesla cve-2017-0199 xla xlsx

Intelligence


File Origin
# of uploads :
1
# of downloads :
406
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Result
Verdict:
Malware
Maliciousness:

Behaviour
Changing an executable file
Using the Windows Management Instrumentation requests
Creating a window
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a file
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %AppData% directory
Creating a process with a hidden window
Launching a service
Possible injection to a system process
Infecting executable files
Connection attempt to an infection source by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Creating a process from a recently created file
Launching a file downloaded from the Internet
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://172.245.214.91/afternooniwalkupfromtheunclesunrisetoentereverywherefasterthanprevioustoenterpcfast.doC
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros masquerade sload
Label:
Malicious
Suspicious Score:
6.2/10
Score Malicious:
63%
Score Benign:
37%
Result
Verdict:
MALICIOUS
Details
Document With Few Pages
Document contains between one and three pages of content. Most malicious documents are sparse in page count.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
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)
Excel sheet contains many unusual embedded objects
Found malware configuration
Injects a PE file into a foreign processes
Installs new ROOT certificates
Malicious sample detected (through community Yara rule)
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Office viewer loads remote template
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: Base64 Encoded PowerShell Command Detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell download and load assembly
Sigma detected: Powershell download payload from hardcoded c2 list
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
Suspicious execution chain found
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
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 AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1396129 Sample: solicitud de cotizacin00784... Startdate: 21/02/2024 Architecture: WINDOWS Score: 100 59 Snort IDS alert for network traffic 2->59 61 Multi AV Scanner detection for domain / URL 2->61 63 Found malware configuration 2->63 65 24 other signatures 2->65 7 EXCEL.EXE 52 63 2->7         started        process3 dnsIp4 51 172.245.214.91, 49162, 49163, 49164 AS-COLOCROSSINGUS United States 7->51 33 afternooniwalkupfr...oenterpcfast[1].doc, ISO-8859 7->33 dropped 11 WINWORD.EXE 345 37 7->11         started        15 wscript.exe 1 7->15         started        18 AddInProcess32.exe 7->18         started        20 AcroRd32.exe 28 7->20         started        file5 process6 dnsIp7 39 afternooniwalkupfr...enterpcfast.doC.url, MS 11->39 dropped 41 C:\Users\user\AppData\...\172.245.214.91.url, MS 11->41 dropped 43 ~WRF{5227F03D-DE7F...C-7D8496C95398}.tmp, Composite 11->43 dropped 45 C:\Users\user\AppData\Local\...\81DD2613.doc, ISO-8859 11->45 dropped 79 Microsoft Office launches external ms-search protocol handler (WebDAV) 11->79 81 Office viewer loads remote template 11->81 83 Microsoft Office drops suspicious files 11->83 22 powershell.exe 12 5 11->22         started        26 EQNEDT32.EXE 12 11->26         started        53 paste.ee 15->53 55 paste.ee 104.21.84.67, 443, 49168 CLOUDFLARENETUS United States 15->55 85 System process connects to network (likely due to code injection or exploit) 15->85 87 Suspicious powershell command line found 15->87 89 Wscript starts Powershell (via cmd or directly) 15->89 99 5 other signatures 15->99 29 powershell.exe 4 15->29         started        57 ip-api.com 208.95.112.1, 49173, 80 TUT-ASUS United States 18->57 91 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 18->91 93 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->93 95 Tries to steal Mail credentials (via file / registry access) 18->95 101 3 other signatures 18->101 31 RdrCEF.exe 2 20->31         started        file8 97 Connects to a pastebin service (likely for C&C) 53->97 signatures9 process10 dnsIp11 47 45.74.19.84, 80 HVC-ASUS United States 22->47 49 uploaddeimagens.com.br 172.67.215.45, 443, 49171 CLOUDFLARENETUS United States 22->49 67 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 22->67 69 Writes to foreign memory regions 22->69 71 Injects a PE file into a foreign processes 22->71 35 C:\Users\user\...\tuesdayfileafternoon.vbs, Unicode 26->35 dropped 37 C:\Users\user\...\tuesdayfileafternoon[1].vbs, Unicode 26->37 dropped 73 Office equation editor establishes network connection 26->73 75 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 26->75 77 Suspicious powershell command line found 29->77 file12 signatures13
Threat name:
Document-Office.Exploit.CVE-2017-0199
Status:
Malicious
First seen:
2024-02-21 11:53:20 UTC
File Type:
Document
Extracted files:
67
AV detection:
10 of 37 (27.03%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Script User-Agent
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Abuses OpenXML format to download file from external location
Blocklisted process makes network request
AgentTesla
Malware family:
AgentTesla
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:informational_win_ole_protected
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:maldoc_OLE_file_magic_number
Author:Didier Stevens (https://DidierStevens.com)
Rule name:office_document_vba
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

Excel file xlsx a32812ea87167fe0a9275823f6c873984de4dc7ece43895f02a175826aeecdce

(this sample)

  
Delivery method
Distributed via e-mail attachment

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