MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733
SHA3-384 hash: 79e6f98f11a845d8910ceb30a95347564f8102319c6eb8e364bc11443e0077c824ae5962e4d8f8a9ad20fe6edf619cbf
SHA1 hash: 7d3578e54962aecebdaf888709eeccf36337eaf6
MD5 hash: 0d7ac12ba297bd78e159a43ea09b247c
humanhash: low-california-virginia-shade
File name:mexicangirlsareverybeautifulandtheyloveotherboysgreatloversareinthrtounderstandhowmuch___beautifulgirlsarethrinthr.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:77'470 bytes
First seen:2024-05-10 09:30:03 UTC
Last seen:Never
File type:Word file doc
MIME type:text/plain
ssdeep 1536:VTd5AapF/vsQ/uWZ0pIBHzZBB6/oatOL0tGJ4o27F+FbOih7JF0mRreLUpXsMW0S:VheapF/ZZ0EHzZL4oawgMkFCbOih7JKd
TLSH T1FF73B26EE30F0915EF55967B435A4B4909FCB33EB28140A139BC973437ADC2E4A6297C
Reporter NDA0E
Tags:AgentTesla CVE-2017-11882 doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
344
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5276cd84-ce9e-0fca-5b3b-0f9a30ace29b.eml
Verdict:
Malicious activity
Analysis date:
2024-05-09 18:44:10 UTC
Tags:
spam exploit cve-2017-11882 stegocampaign loader
Link:
https://app.any.run/tasks/b36e0695-6cc5-427d-91b3-e274ef178e5f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.27333.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-1.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26244.RtfHeur.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.28765.RtfHeur.ObjUpd.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.EvilRTF.CVE-2017-0199-Obfus.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

TwinWave.EvilRTF.ObfusRunAway.20240409.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
Launching a service
Connection attempt by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit shellcode
Link:
https://www.filescan.io/uploads/663de96711114a9ab5e7dea4/reports/7d56ae3c-ff3f-498a-b1cc-585a70c53cf4/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1439497
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Connects to a pastebin service (likely for C&C)
Document exploit detected (process start blacklist hit)
Initial sample is an obfuscated RTF file
Installs new ROOT certificates
Malicious sample detected (through community Yara rule)
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)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-05-09 23:22:08 UTC
File Type:
Document
Extracted files:
4
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wqfeqqiy6nsupme5kxotwnauubsry57cndpmk3yyw7o424w544zq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/240510-lgh2jsfb2w/
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 use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Blocklisted process makes network request
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b40a484118f3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b40a484118f36547b09d55dd3b3414a0651c77e268dec56f18b7ddcd72dde733

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:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection
Rule name:SUSP_RTF_Header_Anomaly_RID2F7F
Create hunting rule
Author:Florian Roth
Description:Detects malformed RTF header often used to trick mechanisms that check for a full RTF header
Reference:https://twitter.com/ItsReallyNick/status/975705759618158593

File information

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

  
Delivery method
Other
  
URLhaus
https://urlhaus.abuse.ch/url/2845321/
  
URLhaus
https://urlhaus.abuse.ch/url/2845458/

Comments