MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a. 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 18 File information Comments

SHA256 hash:	51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a
SHA3-384 hash:	7f997b39fc20137e13ca72b4edf776fbb067c38e4ae4bdc321f2f18986a6d6239f45cee78a806aed696ae006621b745c
SHA1 hash:	d0307c6c32e5975489f02f07f92e084d6c6f525e
MD5 hash:	4dc6d0aca43f8f9697ab908932effe08
humanhash:	north-sad-jig-alabama
File name:	Draft BL Copy & Shipping Documents.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	754'184 bytes
First seen:	2024-03-11 13:34:47 UTC
Last seen:	2024-03-18 13:17:17 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	12288:BnX3inVFaHVo3YocxGOe290UGsqR+Ev6TUJgegiSt1dG+lUPYTkR:p32HgVojMH90oEv6kgzrxl0YG
Threatray	5'022 similar samples on MalwareBazaar
TLSH	T1B5F402C5FA00A5B0EC2D97712572C9715A233C2EA574AA6C3CCE3DB73EF7662540186B
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):
dhash icon	d4c4c4d8ccd4f0c4 (63 x Formbook, 23 x AgentTesla, 8 x RemcosRAT)
Reporter	adrian__luca
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

316

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a.exe

Verdict:

Malicious activity

Analysis date:

2024-03-11 13:55:56 UTC

Tags:

agenttesla stealer

Link:

https://app.any.run/tasks/01597148-1ce0-4c0a-a3f1-6504b14b1d7a

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/478537/

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.2738.29696.25772.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Searching for synchronization primitives

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending a custom TCP request

Reading critical registry keys

Launching a process

Moving a file to the Program Files subdirectory

Replacing files

Stealing user critical data

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

masquerade overlay packed

Link:

https://www.filescan.io/uploads/65ef0898757c624818aa8934/reports/a430d8b1-1211-4b01-9495-ac5fe915fe70/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a

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/20abbce3-f17a-46a2-ad71-642c4f29fc7f

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1406645

Signature

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

.NET source code contains potential unpacker

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Icon mismatch, binary includes an icon from a different legit application in order to fool users

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)

Snort IDS alert for network traffic

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)

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/51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2024-03-11 02:13:43 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=kg73oxmysdafesh3kungrho3nq4ykyudmokyytnfpvnppeu76ofa._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

5efe40ea33bd564b84a7c8cdcc8998b71c4efe3cc8a1b0371a474a2bc90d9d8e

AgentTesla

7bc24eab2671cdde0c8f509b33aa7d42234f85e9547957666bbbd363826e8973

AgentTesla

cb8a384c8ebac333e31a6fcd7ac32bab3074462b6980fe42e4b96068956f5bcf

AgentTesla

fc5733c919c6b89fbd76fd032e2f671b0be88474c3416764641b1d7f8428e57e

AgentTesla

+ 5'012 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240311-qvqe1abh6z/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Looks up external IP address via web service

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

AgentTesla

Unpacked files

SH256 hash:

06a1ae787e808d6287de314be8bec64ef2e0d3bc1bf2ea71ae268c7b8fb19e2d

MD5 hash:

91b39e533d48f5fa25ac604da90b3d8d

SHA1 hash:

f5dadf1e8fcbe64609e4cd78a27e2810f7a6e69e

Link:

https://www.unpac.me/results/5ec4f5ab-f189-40f0-be48-a50417167f4d/

SH256 hash:

c8c1020fe926cc1851b73c1915ad32e2fc393dccb402782aca8f4ea6379ba84d

MD5 hash:

ef7cf89d9ec52b18a8f5b6ee49820f46

SHA1 hash:

dcf9cb9bb3f72ca4b3cc0c00b27bd9ce10b554bb

Link:

https://www.unpac.me/results/5ec4f5ab-f189-40f0-be48-a50417167f4d/

SH256 hash:

f35a3c8a55a93e7ef1ddd1c0380b2f63b6be68fcec8ca8f39007d16c6acb6c2c

MD5 hash:

cceb2575fef2c21da084ffc0b6bfdeb3

SHA1 hash:

aa27b8539d6e8c904962d8febe3443c3b91a0c36

Link:

https://www.unpac.me/results/5ec4f5ab-f189-40f0-be48-a50417167f4d/

SH256 hash:

0713cf17e7e94a86148f66c78acd61f3b2c4f384bfe9f406659b4dd5c952e69b

MD5 hash:

f4bfc0f2a8b714e00df84fd96c56f335

SHA1 hash:

81824790d5fd0f7817110efc727c36cc5fd01cbe

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/5ec4f5ab-f189-40f0-be48-a50417167f4d/

Parent samples :

51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a
bdd4ba2aedeeebd368997ceb0a5c0372959181a08f1e5aefb4b437609630bdff
959d491cbde6323dc2bf7c377a9c1e0940b988f51a3efcc0f1bd526cc0d210b4
c07987b5aaad7e8ba333194b3b602ccde40759ab7d957a4af0eac7da722f72ef
5f834237db6598266c1127b74062bd1d92150daf483ccdb0b37f1d306494a5a4

SH256 hash:

2a2dda03cd0b7f7aa2b41bd46e5146c586a26f9cb2787b0d65c8092517bf8e6b

MD5 hash:

098a156c8b68b6e91d50fcabde4ec299

SHA1 hash:

2efc404b414253f2058978a2bc97222727fe6b75

Link:

https://www.unpac.me/results/5ec4f5ab-f189-40f0-be48-a50417167f4d/

SH256 hash:

51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a

MD5 hash:

4dc6d0aca43f8f9697ab908932effe08

SHA1 hash:

d0307c6c32e5975489f02f07f92e084d6c6f525e

Detections:

INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438

Link:

https://www.unpac.me/results/5ec4f5ab-f189-40f0-be48-a50417167f4d/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/51bfb75d9890/report/overview.html

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

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:	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_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_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

exe 51bfb75d9890c05248fb551a689ddb6c3985628363958c4da57d5af7929ff38a

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/478537/

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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