matiex | 1192f1e83a68ab15df7d769531a9e0801e3885ca255b5e39e6d6efba20a09878

General

Target

Payment.exe
Size

740KB
MD5

47f7382d70303ac96e6b7dddefcafee6
SHA1

e2b9e79894bdf63b6984dc65a40129232357fc97
SHA256

5b5a1a7507d3758b05be55fb8218911b700fb933750fb310b454680e580fc58a
SHA512

49303f04e9a8546ffb8952be98e12b7008fb236cee21416af281114bd31b58e1f1e90f787a50d78b08f0168f18503ff6d220a6c0493be02b4715c3920a3dc874

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
ebop.website
Port:
587
Username:
[email protected]
Password:
P@ssw0rdP@ssw0rd

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
behavioral1/memory/1636-59-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

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:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\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

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

Processes:

Payment.exe

description pid process target process

PID 1788 set thread context of 1636 1788 Payment.exe RegAsm.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Payment.exe

pid process

1788 Payment.exe
1788 Payment.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1636 RegAsm.exe

flow	ioc
3	checkip.dyndns.org

description	pid	process	target process
PID 1788 set thread context of 1636	1788	Payment.exe	RegAsm.exe

pid	process
1788	Payment.exe
1788	Payment.exe

description	pid	process
Token: SeDebugPrivilege	1636	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Payment.exe

description	pid	process	target process
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 2028	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe
PID 1788 wrote to memory of 1636	1788	Payment.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\Payment.exe
"C:\Users\Admin\AppData\Local\Temp\Payment.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1788

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:2028

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:1636

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/1636-57-0x000000000046CE6E-mapping.dmp

Download
memory/1636-59-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1788-54-0x0000000000E20000-0x0000000000EE0000-memory.dmp

Filesize
768KB

Download
memory/1788-55-0x0000000004EE0000-0x0000000004F5A000-memory.dmp

Filesize
488KB

Download
memory/1788-56-0x0000000075DB1000-0x0000000075DB3000-memory.dmp

Filesize
8KB

Download
memory/1788-60-0x0000000000460000-0x0000000000463000-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