MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963. 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 1

SHA256 hash:	cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963
SHA3-384 hash:	4b33b3bd0be477ab003d8e9c469156abc67e9fecb43fe5834466a3381b75aefaff9bf4a4ff7960a14c7fc7c00ecb8b12
SHA1 hash:	e021acf30adbc6e0ecfe78b90684dce5822b9d63
MD5 hash:	14ed6b4a974ed05d690722495eac2dee
humanhash:	mirror-william-robin-california
File name:	14ed6b4a974ed05d690722495eac2dee
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	75'231 bytes
First seen:	2024-03-21 17:51:08 UTC
Last seen:	2024-03-21 19:47:58 UTC
File type:	rtf
MIME type:	text/rtf
ssdeep	768:Hcw/QMXxz34CbpEjlzAxpAJLslUDcgS+WGHVwarubAVQZQ4z3Ni5t/qD1v:HEwB4SdeJLSwezr3N2tg1v
TLSH	T19A73462AE30F0955DF55E67B434A4B4A0AFCB33D72C540A1B9BC973437AD81E4A6287C
Reporter	zbetcheckin
Tags:	AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin

# of uploads :

# of downloads :

111

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963.rtf

Verdict:

No threats detected

Analysis date:

2024-03-21 18:29:28 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/43603f2a-4af0-4642-a7f3-dbe39dd3007a

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Verdict:

Legit

File type:

application/rtf

Has a screenshot:

False

Contains macros:

False

Detection(s):

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for synchronization primitives

Launching a process

Using the Windows Management Instrumentation requests

Creating a window

Sending an HTTP GET request to an infection source by exploiting the app vulnerability

Creating a file in the %AppData% directory

Сreating synchronization primitives

Changing an executable file

Launching a service

Searching for the window

Creating a file

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Connection attempt to an infection source by exploiting the app vulnerability

Creating a process from a recently created file

Result

Verdict:

Malicious

File Type:

RTF File

Link:

https://app.docguard.net/cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

embedequation exploit packed shellcode

Link:

https://www.filescan.io/uploads/65fc73c9757c624818b5672d/reports/43899774-755d-466b-8008-4d737612ca14/overview

Verdict:

Malicious

Labled as:

CVE-2017-11882

Link:

https://www.hybrid-analysis.com/sample/cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1413487

Signature

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Contains functionality to log keystrokes (.Net Source)

Document exploit detected (process start blacklist hit)

Found malware configuration

Hides that the sample has been downloaded from the Internet (zone.identifier)

Injects a PE file into a foreign processes

Installs new ROOT certificates

Machine Learning detection for dropped file

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

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)

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: Equation Editor Network Connection

Sigma detected: File Dropped By EQNEDT32EXE

Sigma detected: Suspicious Binary In User Directory Spawned From Office Application

Sigma detected: Suspicious Microsoft Office Child Process

Tries to harvest and steal browser information (history, passwords, etc)

Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Yara detected AgentTesla

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963

Detection:

cve-2017-11882-shellcode

Link:

https://mwdb.cert.pl/sample/cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963/

Threat name:

Document-RTF.Exploit.CVE-2017-11882

Status:

Malicious

First seen:

2024-03-21 09:39:17 UTC

File Type:

Document

Extracted files:

AV detection:

17 of 38 (44.74%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zo5d56amr2kszgczorsci2oou4c5ys7cyg2vn2l2i5qbkz2ldfrq._file

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger persistence spyware stealer trojan

Link:

https://tria.ge/reports/240321-wfqp4sff5t/

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 SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Drops file in Windows directory

Suspicious use of SetThreadContext

Adds Run key to start application

Looks up external IP address via web service

Executes dropped EXE

Loads dropped DLL

Reads WinSCP keys stored on the system

Reads data files stored by FTP clients

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

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/cbba3ef80c8e/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/cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963

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:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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

File information

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

Web download

AgentTesla

rtf cbba3ef80c8e952c985974642469cea705dc4be2c1b556e97a476015674b1963

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2789039/

Comments

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zbet commented on 2024-03-21 17:51:09 UTC

url : hxxp://198.46.176.159/xampp/deto/wecanwinthisproblemtoundersatndkissingpoweroflovetogetitbackfromtheloversheisbeautifulforme____itrulylovingherwihtallmylovesheisgood.doc