MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3656375c71986015e3c67ae98baa0e3ccb6a5bf4676fb7a336cb41e50b094a8d. 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: 3656375c71986015e3c67ae98baa0e3ccb6a5bf4676fb7a336cb41e50b094a8d
SHA3-384 hash: 9f7f906debf4826cdf93b45f74e4a9c41848c7bfa525d2b64f13f58d2e6ada8dc82fe2d34e3a66e2943ab105aa77cef2
SHA1 hash: 1e44b63d30af74b4b79dcd967a5e5d44348ae664
MD5 hash: 1d975110299f02c71dfbf2d7163d76af
humanhash: nebraska-orange-batman-nineteen
File name:COTIZACION.xla
Download: download sample
Signature AgentTesla
File size:400'896 bytes
First seen:2023-11-30 18:55:44 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 12288:dOeetqw+3DNS5J3Ea7JBXawh62dslH1vadp:dOeKZ+zNc0a7JBXawQ2+vu
TLSH T125840215F692CA6FDD12A434CC85F0DBD235AC9D8E0AD34F32C4B74F4630AA24627E96
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 :
430
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
AgentTesla_20231201_1.zip
Verdict:
Malicious activity
Analysis date:
2023-12-01 08:37:52 UTC
Tags:
phishing phishing-pdf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Changing an executable file
Unauthorized injection to a recently created process
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Infecting executable files
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://91.92.250.100/fmicrosoftdeletedentirehistorycachecookiesfrmthepc.Doc
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Document image
Label:
Benign
Suspicious Score:
3.2/10
Score Malicious:
32%
Score Benign:
68%
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to inject code into remote processes
Contains functionality to log keystrokes (.Net Source)
Document embeds suspicious OLE2 link
Excel sheet contains many unusual embedded objects
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Office equation editor drops PE 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)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic
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)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1350731 Sample: COTIZACION.xla.xlsx Startdate: 30/11/2023 Architecture: WINDOWS Score: 100 45 Snort IDS alert for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 13 other signatures 2->51 7 EQNEDT32.EXE 12 2->7         started        11 WINWORD.EXE 345 47 2->11         started        13 EXCEL.EXE 30 45 2->13         started        16 AcroRd32.exe 21 2->16         started        process3 dnsIp4 25 C:\Users\user\AppData\Roaming\wlanext.exe, PE32 7->25 dropped 27 C:\Users\user\...\forrrromhanmya[1].exe, PE32 7->27 dropped 65 Office equation editor establishes network connection 7->65 67 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->67 18 wlanext.exe 2 7->18         started        29 fmicrosoftdeletede...iesfrmthepc.Doc.url, MS 11->29 dropped 31 C:\Users\user\AppData\...\91.92.250.100.url, MS 11->31 dropped 33 ~WRF{F717E16E-D955...6-0FBFD99007E1}.tmp, Composite 11->33 dropped 35 C:\Users\user\AppData\Local\...\9A7360F2.doc, ISO-8859 11->35 dropped 69 Microsoft Office launches external ms-search protocol handler (WebDAV) 11->69 71 Office viewer loads remote template 11->71 73 Microsoft Office drops suspicious files 11->73 43 91.92.250.100, 49162, 49163, 49164 THEZONEBG Bulgaria 13->43 37 fmicrosoftdeletede...kiesfrmthepc[1].doc, ISO-8859 13->37 dropped file5 signatures6 process7 signatures8 53 Antivirus detection for dropped file 18->53 55 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->55 57 Machine Learning detection for dropped file 18->57 59 4 other signatures 18->59 21 wlanext.exe 12 2 18->21         started        process9 dnsIp10 39 ftp.siscop.com.co 21->39 41 ip-api.com 208.95.112.1, 49168, 80 TUT-ASUS United States 21->41 61 Tries to steal Mail credentials (via file / registry access) 21->61 63 Tries to harvest and steal browser information (history, passwords, etc) 21->63 signatures11
Threat name:
Document-Office.Exploit.CVE-2017-0199
Status:
Malicious
First seen:
2023-11-30 18:56:05 UTC
File Type:
Document
Extracted files:
91
AV detection:
10 of 23 (43.48%)
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
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
Suspicious use of SetThreadContext
Looks up external IP address via web service
Abuses OpenXML format to download file from external location
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla
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 3656375c71986015e3c67ae98baa0e3ccb6a5bf4676fb7a336cb41e50b094a8d

(this sample)

  
Delivery method
Distributed via e-mail attachment

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