MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a. 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: 15

Intelligence 15 IOCs YARA 4 File information Comments

SHA256 hash:	fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a
SHA3-384 hash:	0931acf4c69429aed21f6beb65db631af6be45f4f4d7b39ef4b487102139a7a69cb7080ccdd6b3c69bbb55e79865d263
SHA1 hash:	cef2575e8629baf2dbfcccd99f0554562880807a
MD5 hash:	c7e262e94202b9453ae058e9aba7f247
humanhash:	vermont-kitten-foxtrot-ceiling
File name:	SecuriteInfo.com.Exploit.CVE-2018-0798.4.24859.25941
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	351'072 bytes
First seen:	2024-05-15 12:30:24 UTC
Last seen:	Never
File type:	rtf
MIME type:	text/rtf
ssdeep	6144:IwAYwAYwAYwAYwAYwAYwAYwAYwAYwARNkKd:fX
TLSH	T1CD74CF2DD34B02598F620377AB571E5142BDBA7EF38552B1302C537933EAC39A1252BE
Reporter	SecuriteInfoCom
Tags:	CVE-2017-11882 rtf

Intelligence

File Origin

# of uploads :

# of downloads :

123

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a.rtf

Verdict:

Suspicious activity

Analysis date:

2024-05-15 12:34:05 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/f424b46c-4103-457c-b350-64ebdf5523f3

Note:

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

Detection(s):

Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL

SecuriteInfo.com.Exploit.CVE-2018-0798.4.24859.25941.UNOFFICIAL

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL

MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL

Gathering data

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

Connection attempt to an infection source by exploiting the app vulnerability

Creating a file in the %AppData% directory

Сreating synchronization primitives

Creating a file

Launching a service

Reading critical registry keys

Query of malicious DNS domain

Launching a file downloaded from the Internet

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Stealing user critical data

Sending a TCP request 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/fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Link:

https://www.filescan.io/uploads/6644ab0d3313f70f0afccdda/reports/d3c84da3-1e97-46e6-95ec-3ef6ee8c3261/overview

Verdict:

Malicious

Labled as:

CVE-2018-0798

Link:

https://www.hybrid-analysis.com/sample/fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a

Result

Verdict:

MALICIOUS

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1441976

Signature

.NET source code references suspicious native API functions

Antivirus detection for URL or domain

Contains functionality to log keystrokes (.Net Source)

Document exploit detected (process start blacklist hit)

Drops PE files with a suspicious file extension

Found malware configuration

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 domain / URL

Multi AV Scanner detection for submitted file

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

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)

Sigma detected: Equation Editor Network Connection

Sigma detected: Suspicious Microsoft Office Child Process

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

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

Yara detected AgentTesla

Behaviour

Behavior Graph:

Download SVG

Score:

79%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a

Detection:

cve-2017-11882-shellcode

Link:

https://mwdb.cert.pl/sample/fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a/

Threat name:

Document-RTF.Exploit.CVE-2017-11882

Status:

Malicious

First seen:

2024-05-15 06:52:07 UTC

File Type:

Document

Extracted files:

AV detection:

19 of 38 (50.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7jvrhwmokhsy2pteo5mim72nwkshb7y4bupxcgw5bxcuejb3myfa._file

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240515-pp216shd8z/

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

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

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fa6b13d98e51/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/fa6b13d98e51e58d3e647758867f4db2a470ff1c0d1f711add0dc542243b660a

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_EXPLOIT_CVE_2017_11882_4 Create hunting rule
Author:	ditekSHen
Description:	detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882

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