MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c. 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: 15

Intelligence 15 IOCs YARA 22 File information Comments

SHA256 hash:	40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c
SHA3-384 hash:	61e45fa376846a966bc765e8eb7224ff409f2a4b035171af6b7fc68a574604d7a5e7c5c13baa673929f78e4bd1d0d136
SHA1 hash:	715fa1f5e1329f6620fa147b127da149379545f0
MD5 hash:	0746c3f4bf8541f323095dbce6e39310
humanhash:	apart-muppet-speaker-hot
File name:	40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	615'424 bytes
First seen:	2026-02-05 14:59:45 UTC
Last seen:	2026-02-05 15:25:21 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	21371b611d91188d602926b15db6bd48 (77 x Formbook, 64 x AgentTesla, 32 x SnakeKeylogger)
ssdeep	12288:cz7hU5I5yuNHIgzSFKxWltRohBfSTso93UwDwz0r7hLzB/BSj2UZi:cf+iN57Gtene3F9p/Bmi
Threatray	3'470 similar samples on MalwareBazaar
TLSH	T13CD423869AC0D990D5586330C432CCA545A93970AD47B73F9B2CE96B6C70383EE7778E
TrID	39.1% (.EXE) UPX compressed Win32 Executable (27066/9/6) 38.3% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 7.2% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.5% (.EXE) Win32 Executable (generic) (4504/4/1) 2.9% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
Reporter	adrian__luca
Tags:	AgentTesla exe UPX

UPX packed

This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.

File size (compressed) :	615'424 bytes
File size (de-compressed) :	1'121'792 bytes
Format:	win32/pe
Unpacked file:	429b83afeba46b5bd59d111035fb113975c88a80ccc3a3ae4ad7ef7e7ac06440

Intelligence

File Origin

# of uploads :

# of downloads :

110

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

AutoIt PEPacker

Details

AutoIt

extracted scripts and files

PEPacker

a UPX version number and an unpacked binary

Link:

https://research.acce.ciphertechsolutions.com/results/da2b4580-2b76-4cac-899e-ce7e27c48a80/

Malware family:

agenttesla

ID:

File name:

40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c

Verdict:

Malicious activity

Analysis date:

2026-02-05 15:16:47 UTC

Tags:

smtp exfiltration stealer agenttesla evasion

Link:

https://app.any.run/tasks/9bdaca60-ebc2-43cb-aaae-96181e7d6a1a

Note:

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

Detection:

AgentTesla

Link:

https://www.capesandbox.com/analysis/51855/

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6984b0b7117f8ed80109c44b

Tags:

autoit virus

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-01-09T13:02:00Z UTC

Last seen:

2026-02-07T12:22:00Z UTC

Hits:

~1000

Link:

https://opentip.kaspersky.com/40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/94160f42-0a4c-4703-958e-25c2be0a0c1d

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c/

Threat name:

Win32.Backdoor.FormBook

Status:

Malicious

First seen:

2026-01-09 18:59:10 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

27 of 36 (75.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=icyovafsxnv743475bas2qege6ec5nu4j6pimcvyuqxq7dwfovoa._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

be69dda3a21c5ce0348ef647b59f09d5c3b599b9dbfa7e914906f26e1596044d

AgentTesla

cfb6ef3cd5ea2e93e5ff3bf8b349af9ee47a27a3992d4208f618213296e9a611

AgentTesla

db2271f6304ac6140d219a6a092c757e07dbe0fc342d62b9ba83dc7e0f005cda

AgentTesla

+ 3'460 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla discovery keylogger spyware stealer trojan upx

Link:

https://tria.ge/reports/260205-sdmznagw9e/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

AutoIT Executable

Suspicious use of SetThreadContext

UPX packed file

Looks up external IP address via web service

AgentTesla

Agenttesla family

Unpacked files

SH256 hash:

40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c

MD5 hash:

0746c3f4bf8541f323095dbce6e39310

SHA1 hash:

715fa1f5e1329f6620fa147b127da149379545f0

Link:

https://www.unpac.me/results/e185c252-f14e-44c4-b19c-21f1bc50b000/

SH256 hash:

429b83afeba46b5bd59d111035fb113975c88a80ccc3a3ae4ad7ef7e7ac06440

MD5 hash:

63eb63265ad3150ed6d9b491682fbbfd

SHA1 hash:

16f0d5be6b4c1f7fca44c28e1036124f16a655fb

Detections:

AutoIT_Compiled

Link:

https://www.unpac.me/results/e185c252-f14e-44c4-b19c-21f1bc50b000/

Parent samples :

40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c
429b83afeba46b5bd59d111035fb113975c88a80ccc3a3ae4ad7ef7e7ac06440

SH256 hash:

f2d89ceff0994e26801546271af0f9fc33e4ccbdac1a5ded457be84f47ae27a4

MD5 hash:

6fbc9fc4773ca288a79cbdeee360f5c8

SHA1 hash:

dd4f8a1f90dd6baff26ef8393c19555da8b4eb95

Detections:

win_agent_tesla_g2

AgentTesla

Agenttesla_type2

INDICATOR_EXE_Packed_GEN01

INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Link:

https://www.unpac.me/results/e185c252-f14e-44c4-b19c-21f1bc50b000/

Parent samples :

8845647f13063072e874ae696d5e149e0b373a22214eea0a397427efec337577
22f831f2195236c5865aa5449d554a289fd30d456444d6aa7b983638f0b253f4
2b0bf362ef44ae6c2cc8a859e93211e1c86b5599e0752039b3e69ba400b84b4c
fec603604df2f552fc0a8c8ab2626474498dfefb697fb9dcc53cf250cc4a2736
40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c
429b83afeba46b5bd59d111035fb113975c88a80ccc3a3ae4ad7ef7e7ac06440

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/40b0ea80b2bb6bfe6f9fe8412d408627882eb69c4f9e860ab8a42f0f8ec5755c

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:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

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:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	pe_imphash Create hunting rule

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

Rule name:	UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser Create hunting rule
Author:	malware-lu

Rule name:	upx_3 Create hunting rule
Author:	Kevin Falcoz
Description:	UPX 3.X

Rule name:	upx_largefile Create hunting rule
Author:	k3nr9

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