MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a540201f44f378a2bcade1e6190cd5784ae7cc0bc0f1138436afeb7b10ef7050. 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:	a540201f44f378a2bcade1e6190cd5784ae7cc0bc0f1138436afeb7b10ef7050
SHA3-384 hash:	2586d05473c7a055735b2730ea3d5e66b1fc4a7ad18d18de820822e61ad3d5f08db901abe8b17bf3def0530c597ef3f6
SHA1 hash:	ce5d702505bf3b3ad01452a124bb906122b40b31
MD5 hash:	7135204b519212aa7a5dba15c23ae113
humanhash:	quiet-pennsylvania-social-summer
File name:	RFQ REF R2100131410.pdf.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	603'648 bytes
First seen:	2020-08-03 07:18:36 UTC
Last seen:	2020-08-03 07:42:27 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:IzyEH0xaebfyzfp+d+VtAIi1rOvbCwGdsKXe6/AfEfWzZ:Y7H0mzfpmcdyrOTCw8O6/GvZ
Threatray	11'010 similar samples on MalwareBazaar
TLSH	85D4CF7C5BE00A19F9AE1BBE9C360502DF75F44F6826A39F07B254A904BBB949D40F13
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: saranaprimelestari.com
Sending IP: 37.48.85.232
From: Trikora Ibnu<sale@saranaprimelestari.com>
Subject: REQUEST FOR QUOTATION (RFQ REF : R2100131410)
Attachment: RFQ REF R2100131410.pdf.zip (contains "RFQ REF R2100131410.pdf.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.com:587

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Gathering data

Detection(s):

SecuriteInfo.com.Trojan.Inject3.46680.29482.25504.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

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/407428

Signature

Found malware configuration

Initial sample is a PE file and has a suspicious name

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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)

Tries to steal Mail credentials (via file access)

Uses an obfuscated file name to hide its real file extension (double extension)

Yara detected AgentTesla

Yara detected AntiVM_3

Behaviour

Behavior Graph:

Download SVG

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/a540201f44f378a2bcade1e6190cd5784ae7cc0bc0f1138436afeb7b10ef7050/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-03 07:20:10 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=uvacah2e6n4kfpfn4htbsdgvpbfoptalydyrhbbwv7vxwehpobia._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

2f42e1baa78e2d7160734d4a9a849cff5f95cc2f7dfa161aa9c62429a0058dbe

AgentTesla

3cac6951b870ea92b65b38ffbae3777f979788da0a8fac7ddc0cab11eb46e6e8

AgentTesla

756fde810887452ab2533283973f2e582df198988bcafde9f20dc85e35f4d5c4

AgentTesla

8058646126cba81bea297815cbe34b709b852b5c2b134114c67a7e7c8939045d

AgentTesla

850541657f538f00222c3a538866386f9bdd3f3a40998dfe1c22445619ee2d4b

AgentTesla

d1176c3c4ab396d3bad7dd15c881fdb4e38922e9f7e539dc1035768f366edcf9

AgentTesla

d6f534c9ada1be06a4a8e186506a6807f6f2c26b2d0b4c3178d95b7fd09817f4

AgentTesla

e10450894577e9df3b4e27386d3fa386341cd8357b0016fa918a1fc004cd1e01

AgentTesla

f155dd64a514c9ea5ffc36222d1c66c8daf6416945dbc8e8dd7a5b2cefae02d3

AgentTesla

+ 11'000 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200803-5fqy81wr9a/

Behaviour

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetThreadContext

Reads user/profile data of web browsers

Reads user/profile data of local email clients

Reads data files stored by FTP clients

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/a540201f44f378a2bcade1e6190cd5784ae7cc0bc0f1138436afeb7b10ef7050

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