MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac. 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: 18

Intelligence 18 IOCs YARA 19 File information Comments

SHA256 hash:	f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac
SHA3-384 hash:	76d81b09bbb6e93fb6b8eacce49fbe01f8a8769e849398d24bb10bde697bf8fa5fc35451fedf532886e8b3083e14f364
SHA1 hash:	c5c8e6d0da0837aff48091d4cb878f8539c289f6
MD5 hash:	2eb75038645237c04c6bbe7562b0054f
humanhash:	kentucky-minnesota-angel-sodium
File name:	rrTqdiabb.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	2'819'584 bytes
First seen:	2024-06-04 15:38:18 UTC
Last seen:	2024-06-10 10:46:17 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'467 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	49152:5acCZf7fAbf+2WcHRG883i8z7GlfJEC0kzJ8AseQCjlS2Ao:A1lDw+wA88H7GLEwzmTIjo
TLSH	T176D533FA47E86177C41D0776C3D270949E10EBB7AF8CE30285B4656E2B6739B28B0917
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)
Reporter	lowmal3
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

647

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac.exe

Verdict:

Malicious activity

Analysis date:

2024-06-04 15:40:01 UTC

Tags:

evasion exfiltration smtp stealer agenttesla

Link:

https://app.any.run/tasks/423e792e-2c10-4c72-a145-bce709c1ad98

Note:

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

Detection(s):

Win.Packed.Msilheracles-10017859-0

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=665f5f6a9eda7055042789eawin7simulatehigh_evasion

Tags:

Network Heur

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a process with a hidden window

Creating a file

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Reading critical registry keys

Sending a custom TCP request

Creating a window

Stealing user critical data

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated packed packed smartassembly smart_assembly

Link:

https://www.filescan.io/uploads/665f351649a1c8306265765e/reports/88a37025-0488-4b77-9fb1-5eb08f79a89b/overview

Verdict:

Malicious

Labled as:

Lazy.Generic

Link:

https://www.hybrid-analysis.com/sample/f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac

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/77f3be6b-07bd-48b4-bf5a-f423b10756b3

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1451877

Signature

.NET source code contains potential unpacker

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

Check if machine is in data center or colocation facility

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

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)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

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 Costura Assembly Loader

Yara detected Generic Downloader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac/

Threat name:

Win32.Spyware.Negasteal

Status:

Malicious

First seen:

2024-06-04 09:46:52 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

29 of 38 (76.32%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=6uq24fivn5qal7ogtcylep7w4o75riobvotvkw2ufrklmfyp4owa._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240604-s3lswscd33/

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

Unpacked files

SH256 hash:

af81836429f4454a11d558431c7c49eebe5b8eb7add86e2ac38cae340583b77f

MD5 hash:

b8e6814058a935673304bb4d888ff4bc

SHA1 hash:

529d1e0eca376e60658683659804ea94e626ca87

Link:

https://www.unpac.me/results/4e0ae475-e4fd-44bb-9c7f-ccf7264953a9/

SH256 hash:

5008b504cfac83f00a3df8b12fc5e69f33f6180abb18ffded2fc5083aec3f1b4

MD5 hash:

baa43d62a63afe7b22e5f923857a8d51

SHA1 hash:

357da33d536b23d3d9decaa282230efb4174be0e

Link:

https://www.unpac.me/results/4e0ae475-e4fd-44bb-9c7f-ccf7264953a9/

SH256 hash:

f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac

MD5 hash:

2eb75038645237c04c6bbe7562b0054f

SHA1 hash:

c5c8e6d0da0837aff48091d4cb878f8539c289f6

Detections:

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/4e0ae475-e4fd-44bb-9c7f-ccf7264953a9/

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/f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac

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

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

Rule name:	INDICATOR_EXE_Packed_SmartAssembly Create hunting rule
Author:	ditekSHen
Description:	Detects executables packed with SmartAssembly

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_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

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_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 f521ae15156f6005fdc698b0b23ff6e3bfd8a1c1aba7555b542c54b6170fe3ac

(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 (GUARD_CF)	high

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