matiex | 2d989a1638a922a23b2b0efe882765501c18745bdee68fadee45f835b1772337

General

Target

Payment.exe
Size

741KB
MD5

af90c71820ae43a15bc7e9b19a5756b5
SHA1

14c10d4943fbd06fa014a28e457f7c3559c276ae
SHA256

c578f89d2e9d40571b7abb4839a07f019dcc3bfc37705ee8d9cccfe306432463
SHA512

9d58b08e2cffc7992cb0347a6ebc7969c7cb6d84b5f949ee25028c250f52cf0f9d2085739fed22081ca551e666277d35b87f170db17aea65b3388c5d0b46f7f5

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
ebop.website
Port:
587
Username:
[email protected]
Password:
P@ssw0rdP@ssw0rd

Signatures

Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
stealer keylogger matiex

Matiex Main Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3520-133-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 checkip.dyndns.org
10 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

Payment.exe

description pid process target process

PID 3516 set thread context of 3520 3516 Payment.exe RegAsm.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Payment.exe

pid process

3516 Payment.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3520 RegAsm.exe

flow	ioc
6	checkip.dyndns.org
10	freegeoip.app

description	pid	process	target process
PID 3516 set thread context of 3520	3516	Payment.exe	RegAsm.exe

pid	process
3516	Payment.exe

description	pid	process
Token: SeDebugPrivilege	3520	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Payment.exe

description	pid	process	target process
PID 3516 wrote to memory of 3520	3516	Payment.exe	RegAsm.exe
PID 3516 wrote to memory of 3520	3516	Payment.exe	RegAsm.exe
PID 3516 wrote to memory of 3520	3516	Payment.exe	RegAsm.exe
PID 3516 wrote to memory of 3520	3516	Payment.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\Payment.exe
"C:\Users\Admin\AppData\Local\Temp\Payment.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3516

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3516-130-0x0000000000A10000-0x0000000000AD0000-memory.dmp

Filesize
768KB

Download
memory/3516-131-0x00000000054B0000-0x0000000005542000-memory.dmp

Filesize
584KB

Download
memory/3520-132-0x0000000000000000-mapping.dmp

Download
memory/3520-133-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3520-134-0x0000000005A60000-0x0000000006004000-memory.dmp

Filesize
5.6MB

Download
memory/3520-135-0x00000000054B0000-0x000000000554C000-memory.dmp

Filesize
624KB

Download
memory/3520-136-0x0000000005420000-0x0000000005486000-memory.dmp

Filesize
408KB

Download
memory/3520-137-0x0000000006940000-0x0000000006B02000-memory.dmp

Filesize
1.8MB

Download
memory/3520-138-0x00000000067D0000-0x00000000067DA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads