matiex | 36a301b3b91f34a31803fcf6954a083196d1d2d59a21a532f43ca003e294af38

General

Target

WINDOW-DEFENDER_update.exe
Size

297KB
MD5

442f5757df84d4f7f7fb1d7ea822feb9
SHA1

8ea3a6ef71a980a5c530d3d20b875e795dbdda73
SHA256

f1932e7fd5027c22bcc2f2796a2916d3089e70863ccf8c9ca40af01cdf34206f
SHA512

3e64ebf4fcff483a90f411eb9a49179f859f9fc9bcb64f63f753777bd62c9e2383a6ad949f4baa479087f7970e02c0218ef09bdf1b0c6ba67b58f8b2a72bc026

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1216271892:AAEn1Tw6TUedDgDlack_UbEaK5yRAySruSY/sendMessage?chat_id=1318177442

Signatures

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

Matiex Main Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1700-61-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral1/memory/1700-63-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral1/memory/1700-62-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral1/memory/1700-64-0x000000000046B59E-mapping.dmp	family_matiex
behavioral1/memory/1700-66-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral1/memory/1700-68-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex

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:

WINDOW-DEFENDER_update.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	WINDOW-DEFENDER_update.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	WINDOW-DEFENDER_update.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	WINDOW-DEFENDER_update.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

9 freegeoip.app
4 checkip.dyndns.org
8 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

WINDOW-DEFENDER_update.exe

description pid process target process

PID 892 set thread context of 1700 892 WINDOW-DEFENDER_update.exe WINDOW-DEFENDER_update.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1064 1700 WerFault.exe WINDOW-DEFENDER_update.exe

flow	ioc
9	freegeoip.app
4	checkip.dyndns.org
8	freegeoip.app

description	pid	process	target process
PID 892 set thread context of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe

pid	pid_target	process	target process
1064	1700	WerFault.exe	WINDOW-DEFENDER_update.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

WINDOW-DEFENDER_update.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	WINDOW-DEFENDER_update.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	WINDOW-DEFENDER_update.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WINDOW-DEFENDER_update.exe

description pid process

Token: SeDebugPrivilege 1700 WINDOW-DEFENDER_update.exe

description	pid	process
Token: SeDebugPrivilege	1700	WINDOW-DEFENDER_update.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

WINDOW-DEFENDER_update.exeWINDOW-DEFENDER_update.exe

description	pid	process	target process
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 892 wrote to memory of 1700	892	WINDOW-DEFENDER_update.exe	WINDOW-DEFENDER_update.exe
PID 1700 wrote to memory of 1064	1700	WINDOW-DEFENDER_update.exe	WerFault.exe
PID 1700 wrote to memory of 1064	1700	WINDOW-DEFENDER_update.exe	WerFault.exe
PID 1700 wrote to memory of 1064	1700	WINDOW-DEFENDER_update.exe	WerFault.exe
PID 1700 wrote to memory of 1064	1700	WINDOW-DEFENDER_update.exe	WerFault.exe

outlook_office_path 1 IoCs

Processes:

WINDOW-DEFENDER_update.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	WINDOW-DEFENDER_update.exe

outlook_win_path 1 IoCs

Processes:

WINDOW-DEFENDER_update.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	WINDOW-DEFENDER_update.exe

C:\Users\Admin\AppData\Local\Temp\WINDOW-DEFENDER_update.exe
"C:\Users\Admin\AppData\Local\Temp\WINDOW-DEFENDER_update.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:892

C:\Users\Admin\AppData\Local\Temp\WINDOW-DEFENDER_update.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1772
3⤵
- Program crash
PID:1064

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/892-54-0x0000000000930000-0x0000000000980000-memory.dmp

Filesize
320KB

Download
memory/892-55-0x0000000075801000-0x0000000075803000-memory.dmp

Filesize
8KB

Download
memory/892-56-0x0000000000390000-0x0000000000398000-memory.dmp

Filesize
32KB

Download
memory/892-57-0x0000000005EE0000-0x0000000005F58000-memory.dmp

Filesize
480KB

Download
memory/1064-70-0x0000000000000000-mapping.dmp

Download
memory/1700-61-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1700-59-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1700-63-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1700-62-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1700-64-0x000000000046B59E-mapping.dmp

Download
memory/1700-66-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1700-68-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1700-58-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads