matiex | 6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398

General

Target

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe
Size

739KB
MD5

624696762a64d45cd7153d038fe1aef6
SHA1

62a3b3b5e4de3d434356ad2ec83635efc8515f1e
SHA256

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398
SHA512

dca4a77720170b23fa43f1c80920b3d5cca85d5a2a26f59c6cd26efc99f73f499166ced4ea8037db92ff427a7ea1a5ca8bf9f6c5bef26d83462b44fde10b741d

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
behavioral2/memory/3288-134-0x0000000000400000-0x0000000000472000-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-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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

6 checkip.dyndns.org

flow	ioc
6	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

description	pid	process	target process
PID 908 set thread context of 3288	908	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

pid process

908 6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3288 RegAsm.exe

pid	process
908	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

description	pid	process
Token: SeDebugPrivilege	3288	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe

description	pid	process	target process
PID 908 wrote to memory of 3288	908	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 908 wrote to memory of 3288	908	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 908 wrote to memory of 3288	908	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe
PID 908 wrote to memory of 3288	908	6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe
"C:\Users\Admin\AppData\Local\Temp\6d6b5d82859c0acb0f0d5635f4acd01ab932b6f0dac01443abd129049096a398.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:908
- 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:3288

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/908-130-0x0000000000530000-0x00000000005F0000-memory.dmp

Filesize
768KB

Download
memory/908-131-0x0000000004F40000-0x0000000004FD2000-memory.dmp

Filesize
584KB

Download
memory/908-133-0x00000000051C0000-0x00000000051C3000-memory.dmp

Filesize
12KB

Download
memory/3288-132-0x0000000000000000-mapping.dmp

Download
memory/3288-134-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3288-135-0x0000000005860000-0x0000000005E04000-memory.dmp

Filesize
5.6MB

Download
memory/3288-136-0x0000000005350000-0x00000000053EC000-memory.dmp

Filesize
624KB

Download
memory/3288-137-0x00000000053F0000-0x0000000005456000-memory.dmp

Filesize
408KB

Download
memory/3288-138-0x0000000006860000-0x0000000006A22000-memory.dmp

Filesize
1.8MB

Download
memory/3288-139-0x00000000066F0000-0x00000000066FA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads