MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b. 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: 20

Intelligence 20 IOCs YARA 19 File information Comments

SHA256 hash:	3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b
SHA3-384 hash:	c77e8d0bf03e30b60055c78c8e932bfe93af009aa277beafdd3d549f19cf1d6f06ad683ad5b73770f9ee46c8a1a37d08
SHA1 hash:	79dfeb603e83388218d46bcf18e5a09ac4305f6b
MD5 hash:	09d44762c13b8837e97dd4a39fcf6148
humanhash:	cup-november-muppet-cup
File name:	BAYAROGULU - Turkey_Fiyat teklif 0058118592 - VANTUZ.xlsx.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	662'528 bytes
First seen:	2024-05-28 17:40:17 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:/ucrYCFd6xT/TV8gJDq7txryBYJXHbBhYLsbjyZbyqytbLlSmMPDX8D:b81xf+gdettrJrwjbeBSmgDXA
Threatray	1'396 similar samples on MalwareBazaar
TLSH	T126E412113DECC715DA7F9BF21C50644103362F42F809EA882EC679EF8A71F455936AAB
TrID	63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.2% (.SCR) Windows screen saver (13097/50/3) 9.0% (.EXE) Win64 Executable (generic) (10523/12/4) 5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):
dhash icon	205cb064d8d4d408 (10 x Formbook, 4 x AgentTesla, 2 x Loki)
Reporter	abuse_ch
Tags:	AgentTesla exe geo TUR

Intelligence

File Origin

# of uploads :

# of downloads :

336

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b.exe

Verdict:

Malicious activity

Analysis date:

2024-05-28 18:01:23 UTC

Tags:

stealer agenttesla exfiltration smtp

Link:

https://app.any.run/tasks/8c15048c-6858-4649-87da-7fa30b04c5f7

Note:

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

Detection(s):

SecuriteInfo.com.BackDoor.AgentTeslaNET.20.20867.26350.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6656173c3d0e5a324e765590win7simulatehigh_evasion

Tags:

Banker Encryption Execution Stealth Gensteal Dexter

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Using the Windows Management Instrumentation requests

Creating a file in the %AppData% subdirectories

Reading critical registry keys

Setting a keyboard event handler

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Stealing user critical data

Adding an exclusion to Microsoft Defender

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

masquerade packed

Link:

https://www.filescan.io/uploads/66561733458fabe8a95c9220/reports/3a4b9f23-f827-4488-ac5f-d1e54d4da3ff/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b

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/48bf9da9-3627-40df-b9ff-562c3916fb07

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1448823

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Adds a directory exclusion to Windows Defender

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Contains functionality to log keystrokes (.Net Source)

Contains functionality to register a low level keyboard hook

Found malware configuration

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

Injects a PE file into a foreign processes

Installs a global keyboard hook

Loading BitLocker PowerShell Module

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Suspicious Double Extension File Execution

Snort IDS alert for network traffic

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

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

Uses an obfuscated file name to hide its real file extension (double extension)

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/3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b/

Threat name:

ByteCode-MSIL.Trojan.Zilla

Status:

Malicious

First seen:

2024-05-28 17:41:08 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=h6bq2bbuihgceknn3rgc6xmzmbwwp5yimr7c2vylocap3ucmr45q._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

5db6537a9455294a3b236e740b3d2ff1078f49a901949ba167a55fe62a09787c

AgentTesla

6335b9e2204cdd0a2c6cbd39296aa6b409e46a3ec9ccec992423e65ddae20f30

AgentTesla

e0a3b97566feb5eae0ee4e68c62b909491458321b6b89abaf62d1413a8ff4535

AgentTesla

f95c4cfa4575ecce08ce137d4fa5ede9fd4356814c770120dfea81d1e3ed157f

AgentTesla

+ 1'386 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla execution keylogger persistence spyware stealer trojan

Link:

https://tria.ge/reports/240528-v9f74aeh24/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Adds Run key to start application

Checks computer location settings

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Command and Scripting Interpreter: PowerShell

AgentTesla

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/3b4e0bb3-435e-4a75-8953-021c08f638b4

Unpacked files

SH256 hash:

54892a2ad8bf464501e0f825a114b6519212c52586f18025fa7f7b5abb7df3a9

MD5 hash:

516b95a2508a195dcfd17a41016ccead

SHA1 hash:

e50a8ebffd689a4fd76a5aab73819b454ccd56f4

Link:

https://www.unpac.me/results/d53f285c-db84-4f03-90ed-8db54b3d8d1c/

SH256 hash:

7f5a313fc14db9ac790972cc489df33ed3f6ab07d64e4bd4e33861a9de5980ff

MD5 hash:

293326be801448eb13c840deb5a60ca6

SHA1 hash:

682b52f88dc6990b0c6ac384320b666528af7497

Link:

https://www.unpac.me/results/d53f285c-db84-4f03-90ed-8db54b3d8d1c/

SH256 hash:

3f1baf50e311fb23646c0f2ed288291f9b0fdc0c6ca41c0a198294c12a8111d3

MD5 hash:

7cf5db9dd21d4f5f737ebe4192c7c26f

SHA1 hash:

242943ac32bef5b099d035170c762595570d1a66

Link:

https://www.unpac.me/results/d53f285c-db84-4f03-90ed-8db54b3d8d1c/

SH256 hash:

9808caa443f3dc6805e9bc52a7f3f3ee9b566fa1000a282bb50706d06fd6e035

MD5 hash:

87e4b176134c3e0c248b698c125dc504

SHA1 hash:

1fb798c3f90173c50d877b73db26e11397ae5adc

Detections:

AgentTesla

win_agent_tesla_g2

INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Agenttesla_type2

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

INDICATOR_EXE_Packed_GEN01

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/d53f285c-db84-4f03-90ed-8db54b3d8d1c/

Parent samples :
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SH256 hash:

3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b

MD5 hash:

09d44762c13b8837e97dd4a39fcf6148

SHA1 hash:

79dfeb603e83388218d46bcf18e5a09ac4305f6b

Link:

https://www.unpac.me/results/d53f285c-db84-4f03-90ed-8db54b3d8d1c/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/3f830d043441/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/3f830d043441cc2229addc4c2f5d99606d67f708647e2d570b7080fdd04c8f3b

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:	AgentTeslaV3 Create hunting rule
Author:	ditekshen
Description:	AgentTeslaV3 infostealer payload

Rule name:	AgentTeslaV5 Create hunting rule
Author:	ClaudioWayne
Description:	AgentTeslaV5 infostealer payload

Rule name:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

Rule name:	Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

Rule name:	INDICATOR_EXE_Packed_GEN01 Create hunting rule
Author:	ditekSHen
Description:	Detect packed .NET executables. Mostly AgentTeslaV4.

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_EXE_VaultSchemaGUID Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing Windows vault credential objects. Observed in infostealers

Rule name:	malware_Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

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:	NETexecutableMicrosoft 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

Rule name:	Windows_Generic_Threat_9f4a80b2 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_AgentTesla_ebf431a8 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

No further information available

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

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