MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300. 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 16 File information Comments

SHA256 hash:	3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300
SHA3-384 hash:	812cf6c684910722ec99df7da37ddb41c3c2950af0bbb8d20698906fc54e3c5c944977bce675236ff3ecbceff6e66327
SHA1 hash:	fd52e734e3f321c4b407e80fe034f0e4d394185c
MD5 hash:	0d460657654d78430b5ca4d7d5f4b663
humanhash:	salami-vegan-stairway-india
File name:	Arrival Notice.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	797'696 bytes
First seen:	2024-03-05 16:18:22 UTC
Last seen:	2024-03-10 10:33:01 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	24576:LRJ41oQq+ayWYdCadLuYT8vdbX51Z/sy:Utq+PNdLGVbJf/sy
Threatray	473 similar samples on MalwareBazaar
TLSH	T13305238921B81FB7D97C83F524A6601087F2A453D861E31C4DD1A8DE7A3AF408BBDE57
TrID	63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.2% (.SCR) Windows screen saver (13097/50/3) 9.0% (.EXE) Win64 Executable (generic) (10523/12/4) 5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter	James_inthe_box
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

365

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300.exe

Verdict:

Malicious activity

Analysis date:

2024-03-05 16:20:45 UTC

Tags:

stealer agenttesla

Link:

https://app.any.run/tasks/0fd253f6-eca9-42b2-a7f1-69e5335293f9

Note:

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

Detection(s):

Porcupine.Malware.58887.UNOFFICIAL

SecuriteInfo.com.Win32.PWSX-gen.15012.26736.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a file in the %temp% directory

Launching a process

Creating a file

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending a custom TCP request

Reading critical registry keys

Stealing user critical data

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/65e745f7d86c827370d133d8/reports/1906c599-b949-4cc1-9e0d-c388efb0aa4a/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300

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/e32354f0-b879-4f1b-b3a3-739546822fdc

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1403571

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

Adds a directory exclusion to Windows Defender

Allocates memory in foreign processes

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 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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Scheduled temp file as task from temp location

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

Writes to foreign memory regions

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/3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300/

Threat name:

ByteCode-MSIL.Trojan.SnakeKeylogger

Status:

Malicious

First seen:

2024-03-05 10:46:58 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

13 of 38 (34.21%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=hoerohi3qcoaaia6nxvpkmaktqtjydlavrfmeia6mhtjrpnmomaa._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

061d22ce82c411b7a7a101fcb6fd0836f420b1800a7e5b241089fc819cfd4451

AgentTesla

11d7212106c1e7d65ca5b3a3d6c197775e224c151b89900de265e6efcbb68322

AgentTesla

b224c93b27774068d0c1a5e0ba7e744ff382c96ef02b2626fd434d1686f35e3a

AgentTesla

+ 463 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240305-tsg8dsbh93/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Looks up external IP address via web service

Checks computer location settings

AgentTesla

Unpacked files

SH256 hash:

c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b

MD5 hash:

7c7fb6daa78beb69128991ff893143ed

SHA1 hash:

c01bb99984b12b84129db80eae1d5d8341a358e2

Link:

https://www.unpac.me/results/95577269-6a37-463e-bb62-e8d9904966cf/

SH256 hash:

545f0d58963bae734eda50742cf9f78db188b868b1cd68e37f5bba2bc2c34fbb

MD5 hash:

1bfd87e0f9634e85d97ab3e12280762a

SHA1 hash:

ba3819ab61fc2ba2d0d79ebe31ffea46218fdd61

Link:

https://www.unpac.me/results/95577269-6a37-463e-bb62-e8d9904966cf/

SH256 hash:

3e84443516e6582e8273ddcb839a4466d3d85ee1b2f87e4686f01f0d45dc0918

MD5 hash:

e49d6ff037234c017d1f596c48dd91df

SHA1 hash:

8c525b54734691cdf47a4b55518ca43ae1311ee5

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_EXE_Packed_GEN01

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/95577269-6a37-463e-bb62-e8d9904966cf/

Parent samples :
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SH256 hash:

ec30d1f586b14338573dcd609d1ea0c97235dc6f9ac91ec031cc984fbd11e610

MD5 hash:

6931baeba86285c8cf58a1a47bef1899

SHA1 hash:

2a90ebc7309365e1acfc3ed9a1b094266de36863

Link:

https://www.unpac.me/results/95577269-6a37-463e-bb62-e8d9904966cf/

SH256 hash:

3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300

MD5 hash:

0d460657654d78430b5ca4d7d5f4b663

SHA1 hash:

fd52e734e3f321c4b407e80fe034f0e4d394185c

Link:

https://www.unpac.me/results/95577269-6a37-463e-bb62-e8d9904966cf/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/3b89171d1b80/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/3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300

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:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

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:	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:	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.

Malspam

AgentTesla

zip 2250069ffb7d98ba5d230a12bdd1e0e5266d9b295affde98d01f558d0c726b39

AgentTesla

exe 3b89171d1b809c00201e6deaf5300a9c269c0d60ac4ac2201e61e698bdac7300

(this sample)

Delivery method

Other

Dropped by

SHA256 2250069ffb7d98ba5d230a12bdd1e0e5266d9b295affde98d01f558d0c726b39

Dropped by

MD5 86e86fd7a5992c78b08f95c5a10a124d

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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