MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b171719722a54335ca4f114ced5ff4a8af8e542a6114221df8a9c884d254ee03. 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

Matiex

Vendor detections: 5

Intelligence 5 IOCs YARA 1 File information Comments

SHA256 hash:	b171719722a54335ca4f114ced5ff4a8af8e542a6114221df8a9c884d254ee03
SHA3-384 hash:	7c45e88618cae288d2de22f94610fc291cd0766e6247f1a3138737436d46db57719f67d6da192e80d0ab49185efe8f1c
SHA1 hash:	adc92702d20adf6b31651010fc9d2197883f62e9
MD5 hash:	17a4d7823b55e4ada3b031375578a0a2
humanhash:	sweet-early-beryllium-lamp
File name:	explore.exe
Download:	download sample
Signature	Matiex Create hunting rule
File size:	301'760 bytes
First seen:	2020-08-12 19:15:24 UTC
Last seen:	2020-08-12 20:01:21 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep	3072:7iHX41ozcnIeqGAN8ckd1ByKjw5E8FilG/dSvpkJ/qvZL5fSvd9JGJr5kDrg/:76Co1NRW1cKjM3isSRQoLkJGJr4r0
TLSH	D4542D4E835805ABE431A971C1AE7E4006902E3D3E93DBB9FD18B643BA727C9547387D
Reporter	abuse_ch
Tags:	exe Matiex

abuse_ch

Malspam distributing unidentified malware:

HELO: server0.ascenduum.com
Sending IP: 23.254.227.54
From: Ünallar Metal Nak <office@ascenduum.com>
Subject: RE: RE: RE: Product Inquiry
Attachment: PO-9993.xlsx

Unknown payload URL:
http://downloadyourcryptedfilehereforcriptings.duckdns.org/explore.exe

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/44505/

Detection(s):

SecuriteInfo.com.Generic.mg.17a4d7823b55e4ad.10448.UNOFFICIAL

Result

Verdict:

Suspicious

Maliciousness:

Behaviour

Unauthorized injection to a recently created process

Using the Windows Management Instrumentation requests

DNS request

Sending an HTTP GET request

Sending a custom TCP request

Sending a UDP request

Reading critical registry keys

Launching the process to change network settings

Creating a window

Result

Threat name:

Matiex

Detection:

malicious

Classification:

troj.spyw.evad

Score:

92 / 100

Link:

https://www.joesandbox.com/analysis/423793

Signature

.NET source code contains potential unpacker

.NET source code contains very large array initializations

.NET source code references suspicious native API functions

Injects a PE file into a foreign processes

May check the online IP address of the machine

Sigma detected: Capture Wi-Fi password

Tries to harvest and steal ftp login credentials

Tries to harvest and steal WLAN passwords

Tries to steal Mail credentials (via file access)

Uses netsh to modify the Windows network and firewall settings

Yara detected Matiex Keylogger

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b171719722a54335ca4f114ced5ff4a8af8e542a6114221df8a9c884d254ee03/

Threat name:

ByteCode-MSIL.Infostealer.Stelega

Status:

Malicious

First seen:

2020-08-12 19:17:06 UTC

AV detection:

19 of 29 (65.52%)

Threat level:

5/5

Verdict:

unknown

Result

Malware family:

n/a

Score:

10/10

Tags:

spyware

Link:

https://tria.ge/reports/200812-e38nls2c46/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Modifies service

Suspicious use of SetThreadContext

Looks up external IP address via web service

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

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

Threat name:

Dropper

Score:

0.80

Link:

https://yomi.yoroi.company/submissions/b171719722a54335ca4f114ced5ff4a8af8e542a6114221df8a9c884d254ee03

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.