matiex | 6c7311e2b17f44d10a2e029e4dce1db59d0b19131c744bb94083baa27badb137

General

Target

R3209011873.exe
Size

555KB
MD5

4c43289546bd0ae785093cf0ef3fba6c
SHA1

8987ba13f0aa35479b67bede2c77cb241f541f77
SHA256

ef7d84f2c3326943fbc546b736b513ceab056aa47bc8146ae205d7d5eac2622e
SHA512

c98a9c2c7a4ea46e59d0daf0e674b629f3abd09a3bb715e7b8f19263482149eb4381471f51047e8568a04547f1a45bf00bea6ea4c43ab46cebcf20b092146980

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.metauxsud.com
Port:
587
Username:
euro@metauxsud.com
Password:
hushpuppy2020
Email To:
dollar@metauxsud.com

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/4544-140-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

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

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

25 checkip.dyndns.org
27 freegeoip.app
28 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

R3209011873.exe

description pid process target process

PID 4132 set thread context of 4544 4132 R3209011873.exe MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 4544 MSBuild.exe

flow	ioc
25	checkip.dyndns.org
27	freegeoip.app
28	freegeoip.app

description	pid	process	target process
PID 4132 set thread context of 4544	4132	R3209011873.exe	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	4544	MSBuild.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

R3209011873.exeR3209011873.exeR3209011873.exeR3209011873.exe

description	pid	process	target process
PID 2880 wrote to memory of 3612	2880	R3209011873.exe	MSBuild.exe
PID 2880 wrote to memory of 3612	2880	R3209011873.exe	MSBuild.exe
PID 2880 wrote to memory of 3612	2880	R3209011873.exe	MSBuild.exe
PID 2880 wrote to memory of 1732	2880	R3209011873.exe	R3209011873.exe
PID 2880 wrote to memory of 1732	2880	R3209011873.exe	R3209011873.exe
PID 2880 wrote to memory of 1732	2880	R3209011873.exe	R3209011873.exe
PID 1732 wrote to memory of 4120	1732	R3209011873.exe	MSBuild.exe
PID 1732 wrote to memory of 4120	1732	R3209011873.exe	MSBuild.exe
PID 1732 wrote to memory of 4120	1732	R3209011873.exe	MSBuild.exe
PID 1732 wrote to memory of 4772	1732	R3209011873.exe	R3209011873.exe
PID 1732 wrote to memory of 4772	1732	R3209011873.exe	R3209011873.exe
PID 1732 wrote to memory of 4772	1732	R3209011873.exe	R3209011873.exe
PID 4772 wrote to memory of 3884	4772	R3209011873.exe	MSBuild.exe
PID 4772 wrote to memory of 3884	4772	R3209011873.exe	MSBuild.exe
PID 4772 wrote to memory of 3884	4772	R3209011873.exe	MSBuild.exe
PID 4772 wrote to memory of 4132	4772	R3209011873.exe	R3209011873.exe
PID 4772 wrote to memory of 4132	4772	R3209011873.exe	R3209011873.exe
PID 4772 wrote to memory of 4132	4772	R3209011873.exe	R3209011873.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.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	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.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	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2880

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
2⤵
PID:3612

C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
3⤵
PID:4120

C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:4772

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
4⤵
PID:3884

C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4132

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
5⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4544

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1732-132-0x0000000000000000-mapping.dmp

Download
memory/1732-133-0x0000000000E40000-0x0000000000ECE000-memory.dmp

Filesize
568KB

Download
memory/2880-130-0x0000000000E40000-0x0000000000ECE000-memory.dmp

Filesize
568KB

Download
memory/3612-131-0x0000000000000000-mapping.dmp

Download
memory/3884-137-0x0000000000000000-mapping.dmp

Download
memory/4120-134-0x0000000000000000-mapping.dmp

Download
memory/4132-138-0x0000000000000000-mapping.dmp

Download
memory/4544-139-0x0000000000000000-mapping.dmp

Download
memory/4544-140-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4544-141-0x0000000005380000-0x000000000541C000-memory.dmp

Filesize
624KB

Download
memory/4544-142-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/4544-143-0x0000000005420000-0x0000000005486000-memory.dmp

Filesize
408KB

Download
memory/4544-144-0x0000000006A30000-0x0000000006BF2000-memory.dmp

Filesize
1.8MB

Download
memory/4544-145-0x0000000006900000-0x0000000006992000-memory.dmp

Filesize
584KB

Download
memory/4544-146-0x00000000068C0000-0x00000000068CA000-memory.dmp

Filesize
40KB

Download
memory/4772-136-0x0000000000E40000-0x0000000000ECE000-memory.dmp

Filesize
568KB

Download
memory/4772-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads