MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195. 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 20 File information Comments

SHA256 hash:	a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195
SHA3-384 hash:	4688aae2e9b9144555bace19fc2f9cd1ce9a5a606b4b596d5f3b199f315c6d9334601472c77abf080cb12fb95df2aa9c
SHA1 hash:	bc37948e5ebd7ef9129fb28cc0bb1bbd4a4ccad6
MD5 hash:	7dfe0913c2bd18190768a49969b5bdf8
humanhash:	nineteen-sad-golf-may
File name:	COTAÇÃO para fornecedores em branco - termometro digital.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	744'968 bytes
First seen:	2024-06-10 22:33:09 UTC
Last seen:	2024-06-10 23:23:31 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep	12288:CaCR5leZlNXNCT4CsprXgkVxZU7XfqwNV8p0eVKtj+RkR:r+erRaZs1Xgk7ZU7vdNKoh+M
Threatray	2'680 similar samples on MalwareBazaar
TLSH	T127F423C157EC6352E9352E74A9E8E4FEF7B26242A1D4D58C299230CEC782F901139E5F
TrID	61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.1% (.SCR) Windows screen saver (13097/50/3) 8.9% (.EXE) Win64 Executable (generic) (10523/12/4) 5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):
dhash icon	017896b3a3361821 (10 x Formbook, 9 x AgentTesla, 3 x SnakeKeylogger)
Reporter	smica83
Tags:	AgentTesla exe HUN

Intelligence

File Origin

# of uploads :

# of downloads :

564

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195.exe

Verdict:

Malicious activity

Analysis date:

2024-06-10 22:36:01 UTC

Tags:

evasion stealer agenttesla exfiltration smtp

Link:

https://app.any.run/tasks/9e7f0dbf-e180-4424-be03-707b323c1e57

Note:

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

Detection(s):

SecuriteInfo.com.Trojan.Packed2.46843.12617.12248.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66677f56a439c6d6b0876444win7simulatehigh_evasion

Tags:

Banker Encryption Execution Generic Network Static Kryptik Dexter

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Сreating synchronization primitives

Creating a process with a hidden window

Creating a file in the %temp% directory

Launching a process

Creating a process from a recently created file

Creating a file

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending an HTTP GET request

Reading critical registry keys

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Stealing user critical data

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195

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/72a99891-b51a-4e75-9848-efafc08d1b24

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1454866

Signature

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

AI detected suspicious 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

Injects a PE file into a foreign processes

Installs a global keyboard hook

Loading BitLocker PowerShell Module

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Scheduled temp file as task from temp location

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 ftp login credentials

Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)

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

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195/

Threat name:

ByteCode-MSIL.Trojan.SpyNoon

Status:

Malicious

First seen:

2024-06-10 22:34:06 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

25 of 38 (65.79%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ukz2fbn4o5fsvzkhi6egzzxqvg5lv6ct4c7iylf66gstpu45qgkq._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

6152de8be5555ef7d167f4bef1402141bb12219f2d2dc5cda60f5876773222cf

AgentTesla

a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195

AgentTesla

fd80ef0c4a88f9aa002cb779a52d56a5b0bbaf1061fc2885fc35559ec3d16907

AgentTesla

+ 2'670 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla execution keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240610-2g3nystfkr/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Looks up external IP address via web service

Checks computer location settings

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

Command and Scripting Interpreter: PowerShell

AgentTesla

Unpacked files

SH256 hash:

849fb1339ec278ec634edec1a4c6d0b24f8da0bd54e2b2c11d990b063f65ac53

MD5 hash:

a1a0e3670b63e18565e1c00e93f50df3

SHA1 hash:

d87d3ee46d1d3fa89417874b7643a9432cf9c0bf

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/e0bb4e3b-6db3-41f1-b844-203cc7ecdc99/

Parent samples :
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SH256 hash:

1a1de9f3fe4c3a7ea7cd547cdd9d78b3873d6e243e544e5bb647452d6d9f6cfe

MD5 hash:

ceb52a5c98659e8905ea76737fe00c01

SHA1 hash:

bb7b30ff84d6aa26eaa0021c9fa3cd2c5a08e694

Link:

https://www.unpac.me/results/e0bb4e3b-6db3-41f1-b844-203cc7ecdc99/

SH256 hash:

8410e68aa73c097fa539d73a0c90a694b9b5add704569f1ca15e02a498a5c098

MD5 hash:

926f8c7cc27e328dcf76ce536549b843

SHA1 hash:

50cda648e882f2b7324b711cb20ad3038d76b246

Link:

https://www.unpac.me/results/e0bb4e3b-6db3-41f1-b844-203cc7ecdc99/

SH256 hash:

6243c709db7165f4a84036c0544b462ee9539412c61de6151a6aa18465659e48

MD5 hash:

5166d8930d5a1bf5a1738cc180587975

SHA1 hash:

4316633ea531432ff67776d1e59dcf8481a7cbbc

Link:

https://www.unpac.me/results/e0bb4e3b-6db3-41f1-b844-203cc7ecdc99/

SH256 hash:

a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195

MD5 hash:

7dfe0913c2bd18190768a49969b5bdf8

SHA1 hash:

bc37948e5ebd7ef9129fb28cc0bb1bbd4a4ccad6

Detections:

INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438

Link:

https://www.unpac.me/results/e0bb4e3b-6db3-41f1-b844-203cc7ecdc99/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a2b3a285bc77/report/overview.html

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

Threat name:

AgentTesla

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/a2b3a285bc774b2ae54747886ce6f0a9babaf853e0be8c2cbef1a537d39d8195

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_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:	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:	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_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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