matiex | 4a4f5c58a37ecb13eee6e0c49037006ae06bbd1486f6d8fbed8cc5060c226976

General

Target

08000990800.exe
Size

808KB
MD5

f9b1140593e95614c357a719893ca50e
SHA1

57ed885f150f68d6e637dbc2d2add9bd0358d4a7
SHA256

20404bc0e463cc7474976cf7a83de3e892570bb0aae22d404259d2b157dc3ff9
SHA512

94953797415a305e1ed2954a11690b5c20f71a5cdfb9880be41c3547ec2049c26486d2b9eac0299d94705fcc6b7cd017ca986c4cad8f1984fc33d8d3a901aaa3

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
srvc13.turhost.com
Port:
587
Username:
info@bilgitekdagitim.com
Password:
italik2015

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/4140-133-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

17 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

08000990800.exe

description pid process target process

PID 4160 set thread context of 4140 4160 08000990800.exe RegAsm.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2832 4140 WerFault.exe RegAsm.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

08000990800.exe

pid process

4160 08000990800.exe
4160 08000990800.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 4140 RegAsm.exe

flow	ioc
17	checkip.dyndns.org

description	pid	process	target process
PID 4160 set thread context of 4140	4160	08000990800.exe	RegAsm.exe

pid	pid_target	process	target process
2832	4140	WerFault.exe	RegAsm.exe

pid	process
4160	08000990800.exe
4160	08000990800.exe

description	pid	process
Token: SeDebugPrivilege	4140	RegAsm.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

08000990800.exe

description	pid	process	target process
PID 4160 wrote to memory of 3492	4160	08000990800.exe	RegAsm.exe
PID 4160 wrote to memory of 3492	4160	08000990800.exe	RegAsm.exe
PID 4160 wrote to memory of 3492	4160	08000990800.exe	RegAsm.exe
PID 4160 wrote to memory of 4140	4160	08000990800.exe	RegAsm.exe
PID 4160 wrote to memory of 4140	4160	08000990800.exe	RegAsm.exe
PID 4160 wrote to memory of 4140	4160	08000990800.exe	RegAsm.exe
PID 4160 wrote to memory of 4140	4160	08000990800.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\08000990800.exe
"C:\Users\Admin\AppData\Local\Temp\08000990800.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4160

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:3492

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:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4140 -s 1788
3⤵
- Program crash
PID:2832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4140 -ip 4140
1⤵
PID:1780

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/4140-131-0x0000000000000000-mapping.dmp

Download
memory/4140-133-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4140-134-0x0000000004FD0000-0x000000000506C000-memory.dmp

Filesize
624KB

Download
memory/4140-135-0x0000000005620000-0x0000000005BC4000-memory.dmp

Filesize
5.6MB

Download
memory/4140-136-0x00000000052E0000-0x0000000005346000-memory.dmp

Filesize
408KB

Download
memory/4160-130-0x00000000003C0000-0x0000000000490000-memory.dmp

Filesize
832KB

Download
memory/4160-132-0x0000000005010000-0x0000000005013000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads