MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6643765f338fd0c0426604a1abb6ef92a456433f0a814a57c79a4c37a095653c. 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:	6643765f338fd0c0426604a1abb6ef92a456433f0a814a57c79a4c37a095653c
SHA3-384 hash:	f0bbac21b6b2b3aeef12f010a8bdafbad4de939f79caf76209f5d4907bc5242874c465a51a47dd8521e6373f1a9c2414
SHA1 hash:	c6153db7b4c2aef6fc453fdec1add91c5ab748cb
MD5 hash:	586664f077de431045afd067dcb81ba8
humanhash:	nuts-triple-blue-florida
File name:	Revised EPDA.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	1'261'056 bytes
First seen:	2020-08-05 12:10:13 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	24576:CM7k7XfpKkHV71kzgT2FDTcDMcKhc0AV6bmtpwKpwNKy:C3fpKkpegT2FDTjh9AV6ytpRpcKy
Threatray	10'653 similar samples on MalwareBazaar
TLSH	3D45E1A03944DF5DC83E0F3134636850EBF1EE161E06F64FACD679E85AB664A4E1A34C
Reporter	abuse_ch
Tags:	AgentTesla exe

abuse_ch

Malspam distributing AgentTesla:

HELO: nidec-kds.com
Sending IP: 103.99.1.226
From: Phaz M.Blay-Gonzales <Eric.Liao@nidec-kds.com>
Subject: Re: Revised EPDA for August 2020
Attachment: Revised EPDA.zip (contains "Revised EPDA.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.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/39560/

Detection(s):

SecuriteInfo.com.CIL.HeapOverride.Heur.21535.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Launching a process

Creating a file

Unauthorized injection to a system process

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

92 / 100

Link:

https://www.joesandbox.com/analysis/411177

Signature

Allocates memory in foreign processes

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 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/6643765f338fd0c0426604a1abb6ef92a456433f0a814a57c79a4c37a095653c/

Threat name:

ByteCode-MSIL.Trojan.Kryptik

Status:

Malicious

First seen:

2020-08-05 12:12:07 UTC

AV detection:

21 of 26 (80.77%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=mzbxmxztr7imaqtgasq2xnxpsksfmqz7bkauuv6htjgdpievmu6a._file

Verdict:

malicious

Label(s):

agenttesla

AgentTesla

383afa9b82f107b9f040868f783c06115083de21eb8caa8a744a68c92782acae

AgentTesla

3a18512fa6205d515cde261cc9b79dc09c6dcd733c4f07b79d8713e282b1ea6f

AgentTesla

6edf56bf042ac4f2cf12f3dcdd5704e71ddeee943463706513ba51123209bc6f

AgentTesla

86fb079125f93834e6dc2f5ef86c61c36f6a9dbae5338a42341f75bf329b06bf

AgentTesla

88d5500916ded187f8d33b6e16f29db7388374f977ad11d39733613085189d27

AgentTesla

a5bc29d5e6f55ba05f61fff45175d9864ee0b311ad45baf0cfd65c74666da14c

AgentTesla

a85526e4a0f78afd83f57f2d084c0bd4b82846a06a0aef80c473905561dcfb60

AgentTesla

aa556dde1f62e5e897bf5db6980f8202febe626f2e9840190f1f2695eec3c065

AgentTesla

b1135688496020eb3e075121b22fb9c726c6021068ce415be82d8e48540dc563

AgentTesla

+ 10'643 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

keylogger stealer spyware trojan family:agenttesla

Link:

https://tria.ge/reports/200805-5qfzslgxhj/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

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:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/6643765f338fd0c0426604a1abb6ef92a456433f0a814a57c79a4c37a095653c

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