MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5. 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: 16

Intelligence 16 IOCs YARA 18 File information Comments

SHA256 hash:	16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5
SHA3-384 hash:	77a25007ba8bb11a7c2d82f1d12c1b8fc65a9d7bd75bac366a0d54cb88426050fccb2705da54c5f2f2515d9310d4c85d
SHA1 hash:	ecd899ca1c4764a57a8a15f7ac41624196f1a4e7
MD5 hash:	755c6c74f65a7eb6fac438c71232090b
humanhash:	florida-winner-carpet-cat
File name:	Quark Browser.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	7'186'368 bytes
First seen:	2024-04-01 14:49:12 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	3072:MNA/391UUU35AkH+wWtailGlIQZboLRM9ua/aHyvZRVed2idrTj4i4MzNrpFFbmO:MNALUU4T7sGlVbAP//zNCbuIQ
TLSH	T1A376E98CFFE1CD11E83E52BE34B19B225F72D81194C28E0F6E8600585E63D476665BEE
TrID	67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10523/12/4) 6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):
dhash icon	cc0f33617933078e (1 x AgentTesla)
Reporter	Anonymous
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

527

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5.exe

Verdict:

Malicious activity

Analysis date:

2024-04-01 14:51:23 UTC

Tags:

evasion agenttesla stealer

Link:

https://app.any.run/tasks/a78e9147-3ac8-4fd5-b586-7d815402bdaf

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

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Creating a window

Connection attempt to an infection source

Sending a TCP request to an infection source

Reading critical registry keys

Query of malicious DNS domain

Moving of the original file

Stealing user critical data

Verdict:

Malicious

Threat level:

10/10

Confidence:

91%

Tags:

anti-vm cmd crypto fingerprint infostealer keylogger lolbin msconfig netsh overlay packed shell32 stealer stealer

Link:

https://www.filescan.io/uploads/660ac99dd463a7b04778fecd/reports/ccdadc7a-03e7-433c-a20d-8feb9a9bbea9/overview

Verdict:

Malicious

Labled as:

MSIL.PasswordStealerA.Generic

Link:

https://www.hybrid-analysis.com/sample/16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Agent Tesla

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a0cf5fe9-82e7-48d1-9130-f8dfb4b29a34

Result

Threat name:

Agent Tesla, AgentTesla

Detection:

malicious

Classification:

phis.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1418210

Signature

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

Contains functionality to capture screen (.Net source)

Contains functionality to register a low level keyboard hook

Detected Agent Tesla keylogger

Found malware configuration

Installs a global keyboard hook

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Moves itself to temp directory

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

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

Tries to harvest and steal ftp login credentials

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

Tries to steal Instant Messenger accounts or passwords

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

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2024-04-01 14:50:13 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

20 of 23 (86.96%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=c3ubgq7m5jqifv3l6gvsnammhp2wskojerupv2edprryjnrnawsq._file

Verdict:

malicious

Label(s):

agenttesla

Result

Malware family:

n/a

Score:

7/10

Tags:

collection spyware stealer

Link:

https://tria.ge/reports/240401-r7kwqagg48/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: RenamesItself

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

outlook_office_path

outlook_win_path

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

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

Unpacked files

SH256 hash:

d55800a825792f55999abdad199dfa54f3184417215a298910f2c12cd9cc31ee

MD5 hash:

bfb160a89f4a607a60464631ed3ed9fd

SHA1 hash:

1c981ef3eea8548a30e8d7bf8d0d61f9224288dd

Link:

https://www.unpac.me/results/58a4526e-c250-462b-92c1-2fd6e892cc8e/

SH256 hash:

7ea2f9e365bf11311e110b8dd7477ed3d6c0cdd72f62fb19faf941fa3ecf071b

MD5 hash:

69746b09cb5e755cbfa9464b84395e30

SHA1 hash:

658c48559aabfcf4d046eeb75d2de54a68553094

Link:

https://www.unpac.me/results/58a4526e-c250-462b-92c1-2fd6e892cc8e/

SH256 hash:

16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5

MD5 hash:

755c6c74f65a7eb6fac438c71232090b

SHA1 hash:

ecd899ca1c4764a57a8a15f7ac41624196f1a4e7

Detections:

win_agent_tesla_g1

INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

MALWARE_Win_AgentTeslaV3

MALWARE_Win_AgentTeslaV2

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_GENInfoStealer

INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/58a4526e-c250-462b-92c1-2fd6e892cc8e/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/16e81343ecea/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/16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5

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:	AgentTesla Create hunting rule
Author:	kevoreilly
Description:	AgentTesla Payload

Rule name:	AgentTeslaV2 Create hunting rule
Author:	ditekshen
Description:	AgenetTesla Type 2 Keylogger payload

Rule name:	AgentTesla_mod_tough_mem Create hunting rule
Author:	James_inthe_box
Reference:	https://app.any.run/tasks/3b5d409c-978b-4a95-a5f1-399f0216873d/

Rule name:	agent_tesla Create hunting rule
Author:	Stormshield
Description:	Detecting HTML strings used by Agent Tesla malware

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many file transfer clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_GENInfoStealer Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing common artifacts observed in infostealers

Rule name:	MALWARE_Win_AgentTeslaV2 Create hunting rule
Author:	ditekSHen
Description:	AgenetTesla Type 2 Keylogger payload

Rule name:	MALWARE_Win_AgentTeslaV3 Create hunting rule
Author:	ditekSHen
Description:	AgentTeslaV3 infostealer payload

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETDLLMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_imphash Create hunting rule

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

File information

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

Web download

AgentTesla

exe 16e81343ecea6082d76bf1ab26818c3bf56929c92468fae8837c6384b62d05a5

(this sample)

Delivery method

Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample