MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7. 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:	4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7
SHA3-384 hash:	7b975916263f542d0d2117fb39478beb1c474fa07286844c57e2f1ab9af1c2885c722adc1f38a91c9d57794791555e42
SHA1 hash:	bb92ff2cb5b7f902839ec5ab9efd55241bf5a25d
MD5 hash:	173b817d93e7526b91f356ce9369fa94
humanhash:	nebraska-september-zebra-quebec
File name:	Bank Receipt.pdf.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	681'984 bytes
First seen:	2024-04-12 05:12:42 UTC
Last seen:	2024-04-15 16:57:56 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep	12288:9kvq31eoWWtumuOL1FUUmPYE4W/3Dk8DM6DDJyNQ2fT4GX+3sUw:9eqFJL1FMYE4ADhDMQeQ2fTd+cUw
TLSH	T1C3E4232AB346C6DAC254B776A4D354486330CB1BB177DB2E308E23154FA77FA8CD9684
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	threatcat_ch
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

340

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7.exe

Verdict:

Malicious activity

Analysis date:

2024-04-12 05:16:00 UTC

Tags:

evasion agenttesla stealer

Link:

https://app.any.run/tasks/7414ba76-80e2-495f-85ba-b069c49ec32a

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Reading critical registry keys

Sending a custom TCP request

Moving a file to the Program Files subdirectory

Replacing files

Forced system process termination

Creating a window

Launching a process

Creating a file

Using the Windows Management Instrumentation requests

Stealing user critical data

Unauthorized injection to a system process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

masquerade net_reactor packed packed

Link:

https://www.filescan.io/uploads/6618c2df08ebdfcacd01e3c1/reports/4de7da6f-7eea-4243-9da1-3739bc8718ba/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7

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/1a4c7f36-9173-42aa-b470-17eb72ff250c

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1424880

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Allocates memory in foreign processes

Antivirus / Scanner detection for submitted sample

Check if machine is in data center or colocation facility

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

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Initial sample is a PE file and has a suspicious name

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)

Sigma detected: Suspicious Double Extension File Execution

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)

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

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Suspicious

First seen:

2024-04-12 04:10:08 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

17 of 23 (73.91%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=j243vkukuurh2huytq7w53rijtqoab2y3ob2gww6hysd3pc6dg3q._file

Verdict:

malicious

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240412-fwed1sfe48/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Looks up external IP address via web service

AgentTesla

Unpacked files

SH256 hash:

cc19574c867eca8ae4910a03c1e9516b0e1b2c29e19d28c82d1b6e6052049019

MD5 hash:

adc95967fffec7d6cc94e19014fccffc

SHA1 hash:

ed04f4c9a6616a40ece8cb4d01ad3a56441ff72f

Link:

https://www.unpac.me/results/f601d321-7535-4113-8341-66a0a5cf624f/

SH256 hash:

2ac5c50abc6b225946d1c367e445729d6a93fc977d406863283914a36fe8ed38

MD5 hash:

7b5765b6693fadd05609799f89b08156

SHA1 hash:

c0ea1d9dc74453fcc79a52e9291d6b505de481d6

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_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_EXE_Packed_GEN01

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/f601d321-7535-4113-8341-66a0a5cf624f/

Parent samples :

350d74b5253acdc5472d50c85a9f2d380df768ac78b5cb14fff5324ead9c3e4d
4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7
5702612caa2cfd626ce28bb1e173d884d5314e0922bca28d979e7bf5158441e2

SH256 hash:

38374f9e9d71071ca5a00d74c9788772d8b260abf6c13324ed9c4489fe3e095a

MD5 hash:

ec0d244c8bf28d55e973fd85cbb51d5a

SHA1 hash:

4065467ed8462041d5829c4fd8d585474e9a4fd4

Link:

https://www.unpac.me/results/f601d321-7535-4113-8341-66a0a5cf624f/

SH256 hash:

7a052f1b312514eb4953409ec397f1a8669ae04fcddf9c17a45630d9b99342d7

MD5 hash:

4aa46da608a5ed2f1f931d6905993570

SHA1 hash:

3cd2d999793022b5721221a3259ec56b921a431a

Link:

https://www.unpac.me/results/f601d321-7535-4113-8341-66a0a5cf624f/

SH256 hash:

4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7

MD5 hash:

173b817d93e7526b91f356ce9369fa94

SHA1 hash:

bb92ff2cb5b7f902839ec5ab9efd55241bf5a25d

Link:

https://www.unpac.me/results/f601d321-7535-4113-8341-66a0a5cf624f/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4eb9baaa8aa5/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/4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7

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:	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_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:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

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:	PureCrypter Create hunting rule
Author:	@bartblaze
Description:	Identifies PureCrypter, .NET loader and obfuscator.
Reference:	https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter

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 4eb9baaa8aa5227d1e989c3f6eee284ce0e00758db83a35ade3e243dbc5e19b7

(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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