matiex | c749d39cf57c5ffb8ed18aaf961ad571e0a698c424ec07bf6c9fad3ae407425c

Analysis

max time kernel
102s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30-10-2022 17:10

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General

Target

0x000a000000012329-65.exe
Size

448KB
MD5

78942c6e318b0c460c37069695742d4a
SHA1

fc31e2c1887f95d19d8331ff0945688c7fec32c5
SHA256

c749d39cf57c5ffb8ed18aaf961ad571e0a698c424ec07bf6c9fad3ae407425c
SHA512

0bcf7dc7e7a2354b0a23e60ec477adf8003a22d7833c302fc7bceb72d59281bbec3d225c01b21888cd01310702bec12d08e3d4f283abd3d0c607619bf9bd9f8d
SSDEEP

6144:BewTv689RF6ySday9pEuDi3wsPxdfMcGBfU/:nTv689RFCdaQEuDwPzfMzBfE

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/4992-132-0x0000000000460000-0x00000000004D6000-memory.dmp	family_matiex

Drops startup file 1 IoCs

Processes:

0x000a000000012329-65.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\%nmoufstr%.url	0x000a000000012329-65.exe

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:

0x000a000000012329-65.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	0x000a000000012329-65.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x000a000000012329-65.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	0x000a000000012329-65.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

8 checkip.dyndns.org
24 freegeoip.app
25 freegeoip.app
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1424 4992 WerFault.exe 0x000a000000012329-65.exe

flow	ioc
8	checkip.dyndns.org
24	freegeoip.app
25	freegeoip.app

pid	pid_target	process	target process
1424	4992	WerFault.exe	0x000a000000012329-65.exe

Modifies registry class 5 IoCs

Processes:

0x000a000000012329-65.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\ms-settings\shell\open\command	0x000a000000012329-65.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\ms-settings	0x000a000000012329-65.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\ms-settings\shell	0x000a000000012329-65.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\ms-settings\shell\open	0x000a000000012329-65.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\ms-settings\shell\open\command\	0x000a000000012329-65.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

0x000a000000012329-65.exe

description pid process

Token: SeDebugPrivilege 4992 0x000a000000012329-65.exe

description	pid	process
Token: SeDebugPrivilege	4992	0x000a000000012329-65.exe

outlook_office_path 1 IoCs

Processes:

0x000a000000012329-65.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	0x000a000000012329-65.exe

outlook_win_path 1 IoCs

Processes:

0x000a000000012329-65.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	0x000a000000012329-65.exe

C:\Users\Admin\AppData\Local\Temp\0x000a000000012329-65.exe
"C:\Users\Admin\AppData\Local\Temp\0x000a000000012329-65.exe"
1⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 2124
2⤵
- Program crash
PID:1424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4992 -ip 4992
1⤵
PID:3776

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/4992-132-0x0000000000460000-0x00000000004D6000-memory.dmp

Filesize
472KB

Download
memory/4992-133-0x0000000004E40000-0x0000000004EDC000-memory.dmp

Filesize
624KB

Download
memory/4992-134-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/4992-135-0x0000000004F50000-0x0000000004FB6000-memory.dmp

Filesize
408KB

Download