MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43df57ab41efe08b1cefccb610962e31bf15c398323ce558b0218c7e8be89e9d. 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: 8

Intelligence 8 IOCs YARA 3 File information Comments

SHA256 hash:	43df57ab41efe08b1cefccb610962e31bf15c398323ce558b0218c7e8be89e9d
SHA3-384 hash:	e435361d75714e2e0d2bd82155b86ad59c3826cdaac19ff4dc4ea2495fe75e10505f7151e3d22b569d97da538227c58d
SHA1 hash:	d659dfeb7015595128b7df60e1a90575bb2be1a4
MD5 hash:	a6809fe893a8d574492ed8cf746e160c
humanhash:	orange-bacon-fanta-alaska
File name:	New-PO-075609-Quote_Sample_Order-Specfications,xlxs.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	480'768 bytes
First seen:	2020-08-05 16:17:46 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:eP3SNH0eCgMTkUvf5qJwFhoK85amc9B6IgrpiAC:lUeCg8HoJwFSf8B6JQA
Threatray	10'652 similar samples on MalwareBazaar
TLSH	B2A4DE49335DAB66C9FCDAF0709D34B053BA7D2EA932E3541DC1B0E6A7F27408260967
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: mail-smail-vm89.hanmail.net
Sending IP: 211.231.106.164
From: 어부바 <shinshin04@daum.net>
Subject: RE: GmbH: Request For Quotation/Sample&Specification
Attachment: New-PO-075609-Quote_Sample_Order-Specfications,xlxs.zip (contains "New-PO-075609-Quote_Sample_Order-Specfications,xlxs.exe")

AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/39827/

Detection(s):

SecuriteInfo.com.Generic.mg.a6809fe893a8d574.16320.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Unauthorized injection to a recently created process

Creating a file

Using the Windows Management Instrumentation requests

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.adwa.spyw.evad

Score:

96 / 100

Link:

https://www.joesandbox.com/analysis/411663

Signature

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

Modifies the hosts file

Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)

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

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 access)

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/43df57ab41efe08b1cefccb610962e31bf15c398323ce558b0218c7e8be89e9d/

Threat name:

ByteCode-MSIL.Trojan.FormBook

Status:

Malicious

First seen:

2020-08-05 16:19:08 UTC

AV detection:

21 of 28 (75.00%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ippvpk2b57qiwhhpzs3bbfrogg7rlq4ygi6okwfqeggh5c7it2oq._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

407dbe5863d155a141aec5b500637d794275bf0680e2c8ca34e99f56a28f11a9

AgentTesla

469d5a8aa26b60c5f3234e2124fcda7a61b3accf4011373b32b49cff2cda745a

AgentTesla

5c6d005bb7bd065341b432bf6a27117c76115e18ae10fd21906759d05d05f733

AgentTesla

684c2ac7c5d08c046fd4907cc4466827dc01fdd403ff7bbd64c5aa247884ac74

AgentTesla

77bbe59685fd4ba30b0f14c6471ba479adbe790de6499c7ea2370b2055fcc9c3

AgentTesla

968bef9303261890912cbde7737195a73c2d8892457c3cc8a327008effb4e8c9

AgentTesla

a41851a6ade9f88136829a392e1ac11e0e06c21a25fdd0e3961a347d28204608

AgentTesla

aa4fad19caeb7d4d9abd68155eee268619442c6cfc8a69c2bc337dd4efdf4b4d

AgentTesla

b76ab295c0146b7ef4cdccf4056a85688ed860fc65c8b8b7121ad8fc9a555021

AgentTesla

+ 10'642 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200805-4mp47gaexa/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetThreadContext

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Drops file in Drivers directory

AgentTesla Payload

AgentTesla

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

Threat name:

Suspicious File

Score:

0.45

Link:

https://yomi.yoroi.company/submissions/43df57ab41efe08b1cefccb610962e31bf15c398323ce558b0218c7e8be89e9d

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:	Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

Rule name:	CAP_HookExKeylogger Create hunting rule
Author:	Brian C. Bell -- @biebsmalwareguy
Reference:	https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar