MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8. 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: 19

Intelligence 19 IOCs YARA 18 File information Comments

SHA256 hash:	b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8
SHA3-384 hash:	12909e369727e211c613dfbef0348f17226b887fd76fdb03f66cfe8708a0f7a45f2bf3f1e1f4c16b16b098078d8e9ef8
SHA1 hash:	1ed24cfe751f662f660b6c3d3c287251ae2a4534
MD5 hash:	9d298ef6ed274464d796c2a85dd5d68a
humanhash:	uniform-quebec-whiskey-four
File name:	z51DPGr3dFJ9XUTco4.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	770'048 bytes
First seen:	2024-06-03 18:26:40 UTC
Last seen:	2024-06-03 19:19:24 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	12288:d7kpO8mUKNr+uyigeiP4iMJVYQPqgm39A7ekH4wCKjyBDVE0zgog2Qd6fJzRV:l82Cuy2iVMJV5PPG9AicCXBhJgD2QwBT
TLSH	T130F42310B3D9400EDC7AA5F1093454D727BB6929AAA1D7EDDCC9294EDA733024B12B73
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):
dhash icon	0060ccd4ccf0104c (1 x AgentTesla, 1 x Formbook)
Reporter	FXOLabs
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

369

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8.exe

Verdict:

Malicious activity

Analysis date:

2024-06-03 18:29:13 UTC

Tags:

evasion stealer agenttesla exfiltration smtp

Link:

https://app.any.run/tasks/bdb17be5-72fa-4b43-906b-87e48e25324e

Note:

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

Detection(s):

SecuriteInfo.com.Win32.PWSX-gen.12168.15608.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=665e2b76ab69e84d6a2f482fwin10vpnfull_triage

Tags:

Infostealer Stealth Gensteal

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Searching for synchronization primitives

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending a custom TCP request

Reading critical registry keys

Stealing user critical data

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/665e0af9eae3878d8f378bfc/reports/14a85097-6a6f-43bf-848c-18fda70cfccf/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

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/07109e38-2b84-4299-a26c-947f43652f92

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1451296

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Antivirus / Scanner detection for submitted sample

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

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

Snort IDS alert for network traffic

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 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/b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8/

Threat name:

ByteCode-MSIL.Trojan.SnakeKeylogger

Status:

Malicious

First seen:

2024-06-03 17:58:59 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xavjr76kwhti72yydvsjnj6r36bcmch4gut34d3l3f2oho4p6wua._file

Verdict:

malicious

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240603-w3qzdsef4v/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

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

AgentTesla

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/2b30f0e9-4ed8-4024-bf58-0716a8c2b063

Unpacked files

SH256 hash:

4ed3b0a80feebddd6441815ea99334d7eab55813713a9aa2953412b767405bb8

MD5 hash:

e472f83fa7fb92da892e8ebda9d92112

SHA1 hash:

af8477c3b9530134042aed375122d395d91879e8

Link:

https://www.unpac.me/results/4fa3e7a7-bfa2-47ee-a598-570a0e0c3dbc/

SH256 hash:

c09f0b92365eb47b09362a15fcb60a216ab36b0eeadc9209f5ca1246062137d8

MD5 hash:

3348fb07b2dbf7d897160a718a273bd7

SHA1 hash:

488110e0a25b8d19a368c79dccee3ae4078194ce

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/4fa3e7a7-bfa2-47ee-a598-570a0e0c3dbc/

Parent samples :
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SH256 hash:

c63bc96dd97ce25143cf0ba6e2045bc3fba513cff9aad387df7f0a046d61bfd5

MD5 hash:

0119d8246e1403b47c1f3b52aca7dded

SHA1 hash:

0edea4a297a6ecd7994bd40e24d6f7a4fc8e0208

Link:

https://www.unpac.me/results/4fa3e7a7-bfa2-47ee-a598-570a0e0c3dbc/

SH256 hash:

55729815a6ad44739f2af0c7a7096f4153fcc109d440f23d0d609065e96b625e

MD5 hash:

82a8fdab718d8d9c1c82472293a72e3d

SHA1 hash:

042c0d08baf858128d32c01476380e142891456e

Link:

https://www.unpac.me/results/4fa3e7a7-bfa2-47ee-a598-570a0e0c3dbc/

SH256 hash:

b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

MD5 hash:

9d298ef6ed274464d796c2a85dd5d68a

SHA1 hash:

1ed24cfe751f662f660b6c3d3c287251ae2a4534

Link:

https://www.unpac.me/results/4fa3e7a7-bfa2-47ee-a598-570a0e0c3dbc/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b82a98ffcab1/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

AgentTesla

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

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_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:	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.

Malspam

AgentTesla

exe b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

(this sample)

Delivery method

Distributed via e-mail attachment

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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