MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8918ac8706f6f82a2d1a567f00f92820d48cbecf6a2dc8c79282db4e6a8a762a. 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: 8918ac8706f6f82a2d1a567f00f92820d48cbecf6a2dc8c79282db4e6a8a762a
SHA3-384 hash: 59f657473b040004e342cbc6f06c8801914644138dbb2d89b5471228013acb3fe909d38f3b43bdf512449d3e98b84533
SHA1 hash: 953f16e6ba806cad9f59cdebff711efba066a1bd
MD5 hash: 7d8e01f6a0ecc2cb6fec614028d019e0
humanhash: neptune-violet-idaho-echo
File name:Facturas 0000051113, 005112,, 005113, 005114 00033511353.xla.xla
Download: download sample
Signature AgentTesla
File size:570'368 bytes
First seen:2024-02-16 12:16:19 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 12288:bTkmSEXMcbNedomzEDV73bVtrMI23vkwjMTOx2WxZI/:xSSMMednEDB3bVAkwSK8
TLSH T165C40151BA81CB46F496437049F39A9B6328FD815B624B4B320CF71E3EB07E95E17A31
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 xla xlsx

Intelligence


File Origin
# of uploads :
1
# of downloads :
475
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
Searching for the window
Using the Windows Management Instrumentation requests
Creating a window
Changing an executable file
Sending an HTTP GET request
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a process with a hidden window
Connection attempt by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://198.12.81.134/onemicrosoftdecentballonupdationprocessgoingonentireofficeinsecondstoupdatefasterthanbeforetoupdate.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:
6.0/10
Score Malicious:
61%
Score Benign:
39%
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)
Sample uses string decryption to hide its real strings
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: 1393417 Sample: Facturas 0000051113, 005112... Startdate: 16/02/2024 Architecture: WINDOWS Score: 100 70 Snort IDS alert for network traffic 2->70 72 Multi AV Scanner detection for domain / URL 2->72 74 Found malware configuration 2->74 76 24 other signatures 2->76 9 EXCEL.EXE 7 40 2->9         started        process3 dnsIp4 60 198.12.81.134, 49163, 49164, 49165 AS-COLOCROSSINGUS United States 9->60 56 onemicrosoftdecent...foretoupdate[1].doc, ISO-8859 9->56 dropped 13 wscript.exe 1 9->13         started        17 WINWORD.EXE 345 37 9->17         started        20 AcroRd32.exe 27 9->20         started        file5 process6 dnsIp7 62 pastebin.com 13->62 64 pastebin.com 104.20.68.143, 443, 49168 CLOUDFLARENETUS United States 13->64 96 System process connects to network (likely due to code injection or exploit) 13->96 98 Suspicious powershell command line found 13->98 100 Wscript starts Powershell (via cmd or directly) 13->100 110 5 other signatures 13->110 22 powershell.exe 4 13->22         started        44 onemicrosoftdecent...oretoupdate.doC.url, MS 17->44 dropped 46 C:\Users\user\AppData\...\198.12.81.134.url, MS 17->46 dropped 48 ~WRF{5A1D84CA-B299...6-2BD1533845C4}.tmp, Composite 17->48 dropped 50 C:\Users\user\AppData\Local\...\39AFE6B4.doc, ISO-8859 17->50 dropped 102 Microsoft Office launches external ms-search protocol handler (WebDAV) 17->102 104 Office viewer loads remote template 17->104 106 Microsoft Office drops suspicious files 17->106 25 EQNEDT32.EXE 12 17->25         started        28 RdrCEF.exe 20->28         started        file8 108 Connects to a pastebin service (likely for C&C) 62->108 signatures9 process10 file11 90 Suspicious powershell command line found 22->90 30 powershell.exe 12 5 22->30         started        52 C:\Users\user\AppData\...\extrafiledriod.vbs, Unicode 25->52 dropped 54 C:\Users\user\...\extrafiledroid1[1].vbs, Unicode 25->54 dropped 92 Office equation editor establishes network connection 25->92 94 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 25->94 signatures12 process13 dnsIp14 66 45.74.19.84, 49170, 80 HVC-ASUS United States 30->66 68 172.245.214.91, 49171, 80 AS-COLOCROSSINGUS United States 30->68 112 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 30->112 114 Writes to foreign memory regions 30->114 116 Injects a PE file into a foreign processes 30->116 34 AddInProcess32.exe 12 2 30->34         started        38 AddInProcess32.exe 30->38         started        40 AddInProcess32.exe 30->40         started        42 AddInProcess32.exe 30->42         started        signatures15 process16 dnsIp17 58 ip-api.com 208.95.112.1, 49172, 80 TUT-ASUS United States 34->58 78 Tries to steal Mail credentials (via file / registry access) 34->78 80 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 34->80 82 Tries to harvest and steal browser information (history, passwords, etc) 34->82 84 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 38->84 86 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 38->86 88 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 38->88 signatures18
Threat name:
Win32.Trojan.Znyonm
Status:
Malicious
First seen:
2024-02-15 18:46:55 UTC
File Type:
Document
Extracted files:
60
AV detection:
7 of 37 (18.92%)
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 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
Legitimate hosting services abused for malware hosting/C2
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 8918ac8706f6f82a2d1a567f00f92820d48cbecf6a2dc8c79282db4e6a8a762a

(this sample)

  
Delivery method
Distributed via e-mail attachment

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