MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243. 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: 13

Intelligence 13 IOCs YARA 19 File information Comments 1

SHA256 hash:	5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243
SHA3-384 hash:	2a2012537cc754d432232f6862951303d90778d0af6ea5519b88f8ca3c75806d6714097b307d1573fdfaa6c4e665575e
SHA1 hash:	28b7ec354c2d4202278bab3c742eb06f36c56902
MD5 hash:	5d76a9e3a1948a1307330e52cfefd7bb
humanhash:	ohio-king-early-skylark
File name:	5d76a9e3a1948a1307330e52cfefd7bb
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	703'296 bytes
First seen:	2024-03-27 06:47:53 UTC
Last seen:	2024-03-27 08:25:30 UTC
File type:	exe
MIME type:	application/x-dosexec
ssdeep	12288:RphmU6GDRn/dWA9NhoaFREwZ2+TAjliqMRgYHaNgI9b46IdAK:nNn77hKwZFEkXhogI9blI
TLSH	T1D2E4122076A9C226C6EE41796CB5F07005B4BE266C85C79F2CC17F9F387A7C14225B6B
TrID	44.4% (.EXE) Win64 Executable (generic) (10523/12/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):
dhash icon	e0aaaa2b0303aad0 (34 x Formbook, 21 x AveMariaRAT, 18 x AgentTesla)
Reporter	zbetcheckin
Tags:	64 AgentTesla exe signed

Code Signing Certificate

Organisation:	Microsoft Code Signing PCA 2011
Issuer:	Microsoft Code Signing PCA 2011
Algorithm:	sha256WithRSAEncryption
Valid from:	2024-03-27T05:59:38Z
Valid to:	2025-03-27T05:59:38Z
Serial number:	ed86240bd036acdd9eff00b952a4e59a
Thumbprint Algorithm:	SHA256
Thumbprint:	88086b85db845f361165030811be90c9b59efe48344076f238aab79a130b40c2
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin

# of uploads :

# of downloads :

322

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243.exe

Verdict:

Malicious activity

Analysis date:

2024-03-27 06:50:46 UTC

Tags:

stealer agenttesla

Link:

https://app.any.run/tasks/7e40c31a-dbfa-4862-bfd8-c8c5cda03252

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

Searching for synchronization primitives

Launching the default Windows debugger (dwwin.exe)

Using the Windows Management Instrumentation requests

Searching for the window

Сreating synchronization primitives

DNS request

Connection attempt

Sending a custom TCP request

Reading critical registry keys

Stealing user critical data

Unauthorized injection to a system process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

overlay packed

Link:

https://www.filescan.io/uploads/6603c12543b314c782c13232/reports/b76ea50d-6d2a-421d-834d-c50ccaad42a9/overview

Verdict:

Malicious

Labled as:

MSIL/Kryptik_AGeneric.CCH trojan

Link:

https://www.hybrid-analysis.com/sample/5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243

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/1b1e1076-265b-4353-a153-63bb29cdb175

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1416225

Signature

.NET source code references suspicious native API functions

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

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 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 Putty / WinSCP information (sessions, passwords, etc)

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

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

26%

Verdict:

Benign

File Type:

Link:

https://malprob.io/report/5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243/

Threat name:

Win64.Spyware.Negasteal

Status:

Malicious

First seen:

2024-03-27 06:48:05 UTC

File Type:

PE+ (.Net Exe)

Extracted files:

AV detection:

15 of 23 (65.22%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=lneu6h7zbxa5kj5yygzqdpom544a52nqxr3rjbuxlqpqa5n2sjbq._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/240327-hkr7vahg5y/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Looks up external IP address via web service

AgentTesla

Unpacked files

SH256 hash:

5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243

MD5 hash:

5d76a9e3a1948a1307330e52cfefd7bb

SHA1 hash:

28b7ec354c2d4202278bab3c742eb06f36c56902

Link:

https://www.unpac.me/results/2c86e42b-f7af-41e3-b3e2-185f857f4e9c/

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

Threat name:

Legit

Score:

0.09

Link:

https://yomi.yoroi.company/submissions/5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_imphash Create hunting rule

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	PE_Potentially_Signed_Digital_Certificate Create hunting rule
Author:	albertzsigovits

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.

Web download

AgentTesla

exe 5b494f1ff90dc1d527b8c1b301bdccef380ee9b0bc771486975c1f0075ba9243

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/2793562/

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_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Comments

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zbet commented on 2024-03-27 06:47:53 UTC

url : hxxps://zatrade.biz/6nSkW0jqkE1okon.exe