matiex | 4fa41c445c944ca1fe1c93b725ac3c5e0a677331234a03647f5751825cc9e528

General

Target

WAY-BILL.exe
Size

693KB
MD5

80ca7c023f86983b45096df0433a8966
SHA1

6333e753ee7549a668b7f048646244b4151a802f
SHA256

99a9f37b29dd440c803ea37c57a6acded495d4b49c165f66b3fbe8a427972799
SHA512

f4ff2d80babf175d9e10d63219fd870861eff8787b70e4adf69dd70621774956dacc7853e4acfa82d6fe9ae9bd38db6dd97dc96868b1151d93b5e84034eaccbb
SSDEEP

12288:RgQv+Ae5eBFlKGQUmhb3O7hTSLeBUU04V2dA+LELf88LO0jW7:OV5zUmh76cZU0E2dSvKP

Score

10^/10

matiex collection credential_access discovery 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/1172-5-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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
T1552.001
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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.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
17	freegeoip.app
18	freegeoip.app
14	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

WAY-BILL.exe

description	pid	Process	procid_target
PID 2444 set thread context of 1172	2444	WAY-BILL.exe	88

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

RegAsm.exeWAY-BILL.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WAY-BILL.exe

Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

WAY-BILL.exe

pid	Process
2444	WAY-BILL.exe
2444	WAY-BILL.exe
2444	WAY-BILL.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description	pid	Process
Token: SeDebugPrivilege	1172	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

WAY-BILL.exe

description	pid	Process	procid_target
PID 2444 wrote to memory of 4596	2444	WAY-BILL.exe	86
PID 2444 wrote to memory of 4596	2444	WAY-BILL.exe	86
PID 2444 wrote to memory of 4596	2444	WAY-BILL.exe	86
PID 2444 wrote to memory of 4564	2444	WAY-BILL.exe	87
PID 2444 wrote to memory of 4564	2444	WAY-BILL.exe	87
PID 2444 wrote to memory of 4564	2444	WAY-BILL.exe	87
PID 2444 wrote to memory of 1172	2444	WAY-BILL.exe	88
PID 2444 wrote to memory of 1172	2444	WAY-BILL.exe	88
PID 2444 wrote to memory of 1172	2444	WAY-BILL.exe	88
PID 2444 wrote to memory of 1172	2444	WAY-BILL.exe	88

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\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-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\WAY-BILL.exe
"C:\Users\Admin\AppData\Local\Temp\WAY-BILL.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4596
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4564
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1172-13-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/1172-11-0x00000000053F0000-0x000000000548C000-memory.dmp

Filesize
624KB

Download
memory/1172-16-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/1172-15-0x0000000006820000-0x000000000682A000-memory.dmp

Filesize
40KB

Download
memory/1172-9-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/1172-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1172-14-0x0000000006980000-0x0000000006B42000-memory.dmp

Filesize
1.8MB

Download
memory/1172-12-0x0000000005490000-0x00000000054F6000-memory.dmp

Filesize
408KB

Download
memory/1172-10-0x00000000058C0000-0x0000000005E64000-memory.dmp

Filesize
5.6MB

Download
memory/2444-4-0x00000000054C0000-0x000000000553A000-memory.dmp

Filesize
488KB

Download
memory/2444-8-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2444-7-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2444-0-0x000000007523E000-0x000000007523F000-memory.dmp

Filesize
4KB

Download
memory/2444-1-0x00000000005D0000-0x0000000000684000-memory.dmp

Filesize
720KB

Download
memory/2444-3-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/2444-2-0x0000000005060000-0x00000000050F2000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads