matiex | afe6c35494e440d20664ac7131d5218e4bb5ffc71730940af7a68bfd078c1dc0

General

Target

b43830bee32daf10983121b05b3c35bf.exe
Size

576KB
MD5

b43830bee32daf10983121b05b3c35bf
SHA1

d00b42c00ed3915834d41a3bb122b516a748c60f
SHA256

afe6c35494e440d20664ac7131d5218e4bb5ffc71730940af7a68bfd078c1dc0
SHA512

a50bb4c602d2e254d92e6ceeed8caed9f6c76f0b4be78dd349e82fa11d01b862f9679d8c2f6b93c87f043a67874ee77798172535d0806ac4171fb5737337d74b
SSDEEP

12288:aCe8LxGQ7MRSRAsDYeQBWlWc4b70eU06zTwjZ++R5Mi6/ZVgCp0TLAXZo:aN88Q7aQjDYLWlhW7JUyZ++R5PyZ5pc5

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

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/4960-137-0x0000000000400000-0x0000000000482000-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:

b43830bee32daf10983121b05b3c35bf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b43830bee32daf10983121b05b3c35bf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b43830bee32daf10983121b05b3c35bf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b43830bee32daf10983121b05b3c35bf.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

15 checkip.dyndns.org
17 freegeoip.app
18 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

b43830bee32daf10983121b05b3c35bf.exe

description pid process target process

PID 2992 set thread context of 4960 2992 b43830bee32daf10983121b05b3c35bf.exe b43830bee32daf10983121b05b3c35bf.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1776 4960 WerFault.exe b43830bee32daf10983121b05b3c35bf.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4884 schtasks.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

b43830bee32daf10983121b05b3c35bf.exe

pid process

2992 b43830bee32daf10983121b05b3c35bf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

b43830bee32daf10983121b05b3c35bf.exe

description pid process

Token: SeDebugPrivilege 4960 b43830bee32daf10983121b05b3c35bf.exe

flow	ioc
15	checkip.dyndns.org
17	freegeoip.app
18	freegeoip.app

description	pid	process	target process
PID 2992 set thread context of 4960	2992	b43830bee32daf10983121b05b3c35bf.exe	b43830bee32daf10983121b05b3c35bf.exe

pid	pid_target	process	target process
1776	4960	WerFault.exe	b43830bee32daf10983121b05b3c35bf.exe

pid	process
4884	schtasks.exe

pid	process
2992	b43830bee32daf10983121b05b3c35bf.exe

description	pid	process
Token: SeDebugPrivilege	4960	b43830bee32daf10983121b05b3c35bf.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

b43830bee32daf10983121b05b3c35bf.execmd.exe

description	pid	process	target process
PID 2992 wrote to memory of 4652	2992	b43830bee32daf10983121b05b3c35bf.exe	cmd.exe
PID 2992 wrote to memory of 4652	2992	b43830bee32daf10983121b05b3c35bf.exe	cmd.exe
PID 2992 wrote to memory of 4652	2992	b43830bee32daf10983121b05b3c35bf.exe	cmd.exe
PID 2992 wrote to memory of 4960	2992	b43830bee32daf10983121b05b3c35bf.exe	b43830bee32daf10983121b05b3c35bf.exe
PID 2992 wrote to memory of 4960	2992	b43830bee32daf10983121b05b3c35bf.exe	b43830bee32daf10983121b05b3c35bf.exe
PID 2992 wrote to memory of 4960	2992	b43830bee32daf10983121b05b3c35bf.exe	b43830bee32daf10983121b05b3c35bf.exe
PID 2992 wrote to memory of 4960	2992	b43830bee32daf10983121b05b3c35bf.exe	b43830bee32daf10983121b05b3c35bf.exe
PID 4652 wrote to memory of 4884	4652	cmd.exe	schtasks.exe
PID 4652 wrote to memory of 4884	4652	cmd.exe	schtasks.exe
PID 4652 wrote to memory of 4884	4652	cmd.exe	schtasks.exe

outlook_office_path 1 IoCs

Processes:

b43830bee32daf10983121b05b3c35bf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b43830bee32daf10983121b05b3c35bf.exe

outlook_win_path 1 IoCs

Processes:

b43830bee32daf10983121b05b3c35bf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b43830bee32daf10983121b05b3c35bf.exe

C:\Users\Admin\AppData\Local\Temp\b43830bee32daf10983121b05b3c35bf.exe
"C:\Users\Admin\AppData\Local\Temp\b43830bee32daf10983121b05b3c35bf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2992

C:\Windows\SysWOW64\cmd.exe
cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml"
2⤵
- Suspicious use of WriteProcessMemory
PID:4652

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml"
3⤵
- Creates scheduled task(s)
PID:4884

C:\Users\Admin\AppData\Local\Temp\b43830bee32daf10983121b05b3c35bf.exe
"C:\Users\Admin\AppData\Local\Temp\b43830bee32daf10983121b05b3c35bf.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4960 -s 1912
3⤵
- Program crash
PID:1776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4960 -ip 4960
1⤵
PID:1992

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

C:\Users\Admin\AppData\Local\Temp\1cf577b9dd994dc5b1fb65c6529fbb44.xml
Filesize
1KB

MD5
2feaac3555165aa7b76fabc3984fe19b

SHA1
76710b1b204309f4d057eba17bba71b7444f52af

SHA256
68052979b38f028b24e466114471d2d49568b83a9a7f051a82a72c5ca4e8c01c

SHA512
81cf57a2ad53f9eaf9a21799dc87e7846a1669a370e05597f58ffb87a91f8f38814375e675880a6d9cdb5bb667d47cb875e6fb471d9a9b143f81a83e6f5b6739

Download Submit
memory/2992-135-0x000000000045A000-0x0000000000460000-memory.dmp

Filesize
24KB

Download
memory/4652-132-0x0000000000000000-mapping.dmp

Download
memory/4884-134-0x0000000000000000-mapping.dmp

Download
memory/4960-133-0x0000000000000000-mapping.dmp

Download
memory/4960-137-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-138-0x00000000052B0000-0x000000000534C000-memory.dmp

Filesize
624KB

Download
memory/4960-139-0x0000000005900000-0x0000000005EA4000-memory.dmp

Filesize
5.6MB

Download
memory/4960-140-0x00000000053C0000-0x0000000005426000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads