MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51bb31dbdf94b9eeee904e54fc827e4c66cd12cd46ab72c4259883f0bad275a2. 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: 9

Intelligence 9 IOCs YARA 3 File information Comments

SHA256 hash:	51bb31dbdf94b9eeee904e54fc827e4c66cd12cd46ab72c4259883f0bad275a2
SHA3-384 hash:	2ffd017db1afcbd32db6127ac9ff986b2d1abb50cbdf9243b209c709bc60023c41538037807907df8723149ab7a510fe
SHA1 hash:	852d667476ffc1317b9c4468dd2e686d49dafbaf
MD5 hash:	0865c71339f00a1de6dd05ce4d93cf4a
humanhash:	burger-cola-dakota-kilo
File name:	urgent order 53728139800_56.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	885'760 bytes
First seen:	2020-08-04 09:15:54 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	12288:TCHcPgYxmOE+2Do4pPeRH89f31S4HTOp9CfQ67Mzzh5J3wDK1d2870jDV:TjIYxPeVZlN1pBMpfAWH7CV
Threatray	10'613 similar samples on MalwareBazaar
TLSH	5F15AEC1F5409E50D8294E3A8D3349924B33AC6BEF03D607349CB6196BF76866A65F83
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: webmail.cyber.net.pk
Sending IP: 203.101.175.37
From: hameedentr@cyber.net.pk
Subject: Purchase Order 4-08-2020 Linkwell industry Co., Ltd
Attachment: urgent order 53728139800_56.pdf.gz (contains "urgent order 53728139800_56.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/38394/

Detection(s):

SecuriteInfo.com.CIL.HeapOverride.Heur.2880.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a window

Unauthorized injection to a recently created process

Creating a file

Using the Windows Management Instrumentation requests

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

96 / 100

Link:

https://www.joesandbox.com/analysis/408946

Signature

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

Machine Learning detection for sample

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 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/51bb31dbdf94b9eeee904e54fc827e4c66cd12cd46ab72c4259883f0bad275a2/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-08-04 09:17:08 UTC

AV detection:

25 of 29 (86.21%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=kg5tdw67ss4653uqjzkpzat6jrtm2ewni2vxfrbftcb7bowsowra._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

32287eaeee99cb1c582ac382ce3d22060fff1ace6bee631fa8079d787ea3b921

AgentTesla

3d5aeffd916cfcb16b015b3c74992fe47870be047c7bbb82204204a3a22e2b1f

AgentTesla

412c6384372bdaf1c8594595851960b481482bb9a5f02edca5b4323c9d437860

AgentTesla

4a6067b076edb6669b238f77c51ee8408cb4708f7c8b99ddddbca3b4b8e304a2

AgentTesla

4f9afefe1133ef16b7e992d734996e4b2d521d8a7024d69fb31008021e059af7

AgentTesla

4fba937f1e8ae7eab73de2233f36e813fc2e4e889cbf5103f72ed642ba2e76c3

AgentTesla

8eab9726b92a382bd439c8c67f771171a72d134e47020bd1d64a7bf8e4099218

AgentTesla

be7e2fdc4c63673854cef15b510cb5e1a7567db8e2be0d3bbfed7d1d2fd6dd9f

AgentTesla

f07ba2d937b6c70ce19f15522942eca44526fd9e856235efdc2062d307c20f02

AgentTesla

+ 10'603 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200804-lwt216vse2/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Reads user/profile data of local email clients

AgentTesla Payload

AgentTesla

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

Threat name:

Kryptik

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/51bb31dbdf94b9eeee904e54fc827e4c66cd12cd46ab72c4259883f0bad275a2

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