matiex | 356c38de132ad392f3155f48d11f97efbd7892a04499aea67dab5a76e85cb68d

General

Target

tmp/f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Size

1.5MB
MD5

8e5e31f5dd73631eddc2cb57e0f48a9a
SHA1

13bd3cf85edef10be8b60c96334eda4f30eda0ba
SHA256

356c38de132ad392f3155f48d11f97efbd7892a04499aea67dab5a76e85cb68d
SHA512

43cf5099575d698ffbd13dc82aa76e2358629d52217cd9d019acfb52c87a29e1ef9750dee756d164787544c76cc68464b014e3f17b3236467952ef95215a94d1

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1769394961:AAF5BB35akL859CwVaXypIqpVsGWlaKvi7A/sendMessage?chat_id=1735544933

Signatures

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

Matiex Main Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3480-125-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral2/memory/3480-126-0x000000000047032E-mapping.dmp	family_matiex
behavioral2/memory/3480-133-0x0000000005200000-0x00000000056FE000-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 local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.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

27 checkip.dyndns.org
29 freegeoip.app
30 freegeoip.app

flow	ioc
27	checkip.dyndns.org
29	freegeoip.app
30	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

Processes:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description	pid	process	target process
PID 2732 set thread context of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

pid process

3480 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description pid process

Token: SeDebugPrivilege 3480 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

pid	process
3480	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description	pid	process
Token: SeDebugPrivilege	3480	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exef4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description	pid	process	target process
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 2732 wrote to memory of 3480	2732	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
PID 3480 wrote to memory of 720	3480	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	netsh.exe
PID 3480 wrote to memory of 720	3480	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	netsh.exe
PID 3480 wrote to memory of 720	3480	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

outlook_win_path 1 IoCs

Processes:

f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe

C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
"C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2732

C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
"C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:3480

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:720

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe.log
MD5
f1181bc4bdff57024c4121f645548332

SHA1
d431ee3a3a5afcae2c4537b1d445054a0a95f6e6

SHA256
f1a7e138b25d0cb24bb4b23bd781b0dd357afd49d45e19ffa44cdb80170336ad

SHA512
cf8059f289bcb4f33e82a2c4851fade486bd449793a39718d49bc357efd09689150aedd277c5ebcf79b5ebb4bbe36f0cbb72510a50398bee804ffd9c889604e3

Download Submit
memory/720-134-0x0000000000000000-mapping.dmp

Download
memory/2732-124-0x00000000086E0000-0x0000000008853000-memory.dmp

Filesize
1.4MB

Download
memory/2732-118-0x0000000004AA0000-0x0000000004AA1000-memory.dmp

Filesize
4KB

Download
memory/2732-120-0x0000000004BB0000-0x00000000050AE000-memory.dmp

Filesize
5.0MB

Download
memory/2732-121-0x0000000004D40000-0x0000000004D47000-memory.dmp

Filesize
28KB

Download
memory/2732-122-0x0000000008000000-0x0000000008001000-memory.dmp

Filesize
4KB

Download
memory/2732-123-0x0000000008370000-0x0000000008371000-memory.dmp

Filesize
4KB

Download
memory/2732-115-0x00000000000E0000-0x00000000000E1000-memory.dmp

Filesize
4KB

Download
memory/2732-119-0x0000000004A90000-0x0000000004A91000-memory.dmp

Filesize
4KB

Download
memory/2732-117-0x00000000050B0000-0x00000000050B1000-memory.dmp

Filesize
4KB

Download
memory/3480-125-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/3480-132-0x0000000005270000-0x0000000005271000-memory.dmp

Filesize
4KB

Download
memory/3480-133-0x0000000005200000-0x00000000056FE000-memory.dmp

Filesize
5.0MB

Download
memory/3480-126-0x000000000047032E-mapping.dmp

Download
memory/3480-135-0x0000000006950000-0x0000000006951000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads