MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85. 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: 17

Intelligence 17 IOCs YARA 24 File information Comments

SHA256 hash:	6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85
SHA3-384 hash:	7e1aa73690ad2e1dfb9d51040db8c19a4107db0fe32594c6c73199a3d5e927105e9027d4ef75d112440103437cf1bc10
SHA1 hash:	1c43e2dd4b833fea0c6c34c5ae4edfb4b3df3dde
MD5 hash:	572f9e0862e5a342d7359d5eeafa68ff
humanhash:	kilo-beer-maryland-johnny
File name:	6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	869'896 bytes
First seen:	2025-04-08 08:24:30 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'473 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	24576:HbtzMnRtByzAo0pwb8x+KzV5fN7XQBmZVaw:pSBykoSwb8FbDbv
Threatray	1 similar samples on MalwareBazaar
TLSH	T1DF05BE9C7610B19FCA47C632CA64ED70AA606DAA530BC30395D72DEFB94D993DF140E2
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
dhash icon	16e8c8e8e8c8e812 (10 x SnakeKeylogger, 9 x Formbook, 6 x MassLogger)
Reporter	adrian__luca
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

334

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85

Verdict:

Malicious activity

Analysis date:

2025-04-08 12:21:06 UTC

Tags:

evasion stealer ftp agenttesla exfiltration

Link:

https://app.any.run/tasks/6bce2136-192a-43c6-8096-cb63de784849

Note:

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

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67f4df7fa695a0cd1facadbe

Tags:

agenttesla virus micro msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

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

Stealing user critical data

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

expired-cert invalid-signature obfuscated obfuscated packed packed packer_detected signed vbnet

Link:

https://www.filescan.io/uploads/67f4dd7c2d430c849e0c7a82/reports/9dd5d6df-ec39-4e37-846d-acda00b1e6ec/overview

Verdict:

Malicious

Labled as:

Jalapeno.Generic

Link:

https://www.hybrid-analysis.com/sample/6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85

Malware family:

Agent Tesla

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/85d51dcb-5a56-49e3-989b-8600cf3f56c2

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1659768

Signature

.NET source code contains potential unpacker

Allocates memory in foreign processes

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

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious 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)

Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)

Sigma detected: Silenttrinity Stager Msbuild Activity

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 steal Mail credentials (via file / registry access)

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM3

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85/

Threat name:

Win32.Trojan.Jalapeno

Status:

Malicious

First seen:

2025-03-25 18:11:28 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

25 of 36 (69.44%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=mqb3oypcqp5vvxxxoj4jjoqlcu35wcx5yhkwj3rl5rjrpt363scq._file

Verdict:

malicious

Label(s):

agenttesla

unc_loader_037

Similar samples:

error

AgentTesla

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla discovery keylogger spyware stealer trojan

Link:

https://tria.ge/reports/250408-ka2dwasjs9/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Looks up external IP address via web service

AgentTesla

Agenttesla family

Verdict:

Malicious

Tags:

external_ip_lookup

YARA:

n/a

Link:

https://app.threat.zone/submission/218a8376-1ddc-4aea-bce1-3857287dc2db

Unpacked files

SH256 hash:

6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85

MD5 hash:

572f9e0862e5a342d7359d5eeafa68ff

SHA1 hash:

1c43e2dd4b833fea0c6c34c5ae4edfb4b3df3dde

Link:

https://www.unpac.me/results/7c9ef8c0-4a47-4b5f-bcba-50e355803dae/

SH256 hash:

e120eded142f25d8b769bdbbcb63fdb0eefddc07af0f28faeb7a97cb7defde97

MD5 hash:

817135c5aa6049f3571824cbf2186b67

SHA1 hash:

165ad13726e6db2af4035eae2d5ad13408522253

Link:

https://www.unpac.me/results/7c9ef8c0-4a47-4b5f-bcba-50e355803dae/

SH256 hash:

4a986d01b8a6b2c13dc5585ac4e71b204773b51ccb74036e36e43541f4c3e60c

MD5 hash:

f80bc65f9ad5ce103bf28f813ff08c88

SHA1 hash:

b5c30b9ed53072e12e2ad79e84fed243960b2e19

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/7c9ef8c0-4a47-4b5f-bcba-50e355803dae/

SH256 hash:

143c0a3eb39da23c81043a3c1ef0a7e83321b467e2bb6f55102c87277f8fc79e

MD5 hash:

7c10269accd9402f875380a067bb0c37

SHA1 hash:

d5a4e57fd07f3251926e1c46c773b80126f08a0a

Detections:

win_agent_tesla_g2

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

MALWARE_Win_AgentTeslaV2

Link:

https://www.unpac.me/results/7c9ef8c0-4a47-4b5f-bcba-50e355803dae/

Parent samples :

143c0a3eb39da23c81043a3c1ef0a7e83321b467e2bb6f55102c87277f8fc79e
77b9f807d8cceb59c1446ac8f56d5cfed3164161580365359bcfd409a06a5f77
a5112345a4d4d1d1e70764523af1f79fca30b46786f1a129f4cf80ee41d0b28a
6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85

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

Threat name:

Legit

Score:

0.20

Link:

https://yomi.yoroi.company/submissions/6403b761e283fb5adef7727894ba0b1537db0afdc1d564ee2bec5317cf7edc85

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:	AgentTeslaV2 Create hunting rule
Author:	ditekshen
Description:	AgenetTesla Type 2 Keylogger payload

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_KB_CERT_7c1118cbbadc95da3752c46e47a27438 Create hunting rule
Author:	ditekSHen
Description:	Detects executables signed with stolen, revoked or invalid certificates

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:	MALWARE_Win_AgentTeslaV2 Create hunting rule
Author:	ditekSHen
Description:	AgenetTesla Type 2 Keylogger payload

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

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

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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.

No further information available

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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