MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b642527e686b781a602fb322e7d34d0f18748778de42a0e3774d9990a71e2c92. 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:	b642527e686b781a602fb322e7d34d0f18748778de42a0e3774d9990a71e2c92
SHA3-384 hash:	684af715f85a22d441f5169c7c3cf028524cda8ca5e0b938730a30cc2334217e0e429796b2838f5576b89c260d475c91
SHA1 hash:	d15e322714b7c85266ea053c535ff73f4349476a
MD5 hash:	ff286368558ae7854524c438ad15702b
humanhash:	river-oscar-four-don
File name:	PO-Jiehong20959481.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	680'960 bytes
First seen:	2020-08-31 13:09:22 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep	12288:fFxFjjS7VDysbl6b59HPcUCx+wMQlaXWWXozomh0DvbH3hOlxeMRvc31:v9jWVDywla59HPgSWWXuomWMqMRvM1
Threatray	10'640 similar samples on MalwareBazaar
TLSH	AFE40213750C7FC3C4F94AB92659B85432DA2F81BB31F1B6AC82759A34B371C5637A0A
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: server0.intouchsport.net
Sending IP: 104.168.220.179
From: Helen Xia <office@intouchsport.net>
Subject: PO for Jiehong-20959481
Attachment: PO-Jiehong20959481.z (contains "PO-Jiehong20959481.exe")

AgentTesla SMTP exfil server:
mail.privateemail.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/53560/

Detection(s):

SecuriteInfo.com.W32.Trojan-7.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a window

Launching a process

Creating a file

Using the Windows Management Instrumentation requests

Unauthorized injection to a system process

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/455506

Signature

.NET source code contains potential unpacker

Allocates memory in foreign processes

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

Found malware configuration

Injects a PE file into a foreign processes

Multi AV Scanner detection for submitted 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)

Sigma detected: MSBuild connects to smtp port

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)

Writes to foreign memory regions

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/b642527e686b781a602fb322e7d34d0f18748778de42a0e3774d9990a71e2c92/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-31 05:24:11 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wzbfe7tinn4buybpwmropu2nb4mhjb3y3zbkby3xjwmzbjy6fsja._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

55114bd780868f8b5c0ac827ed3ffa156e09b1949f1d486ffbfd79318ccf1ef4

AgentTesla

a4a7810facb6a01422c96f844bf7a537f4b6968190bc1c1de57810e73caa58ff

AgentTesla

abce854dbb1be834088423c8a911d7111cd6d205b9f6b44be000652860fa03c6

AgentTesla

b5d1d457a00cd4dcb87cb66584613857105c975eb44d98c046f13c57c627934b

AgentTesla

c4d5fab1e5e40cf0377d5eaca0e427d01fcd61495743ea4290d8745163e84e56

AgentTesla

d4eec3387fde66fc5b45135db86b9fcdebcb75e199fe9be1a834d89cac6b9d13

AgentTesla

e738d23963c1001eb3cc3287fd96bacb4a4f073c665c866bc3cadf39d71350e8

AgentTesla

ea6ac531e33b7798bd3c5cb07048af206fd3f5551902f7cde6889c652302476f

AgentTesla

f0e20dc9aafe9043231c48c4de5c58324c9ed4b1cf1ba479a0fbed7c7f0bbb0f

AgentTesla

+ 10'630 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200831-7cekj7bb1e/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

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/b642527e686b781a602fb322e7d34d0f18748778de42a0e3774d9990a71e2c92

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