matiex | 12c3cd6afeb0da63f0ef22c0f430665a489d477876fb97f55fb4466badd21571

General

Target

R980533211.exe
Size

652KB
MD5

cea5d13da191b583af960af626f06c19
SHA1

a778bf24076a24e501a2f4db102cfdac413bb566
SHA256

cca5e12f1d9a4823e1188c7af7f66e51299fa975f0a4f40062808bc7c5fc4001
SHA512

2c6fb4c9c0eb6f287bf7353f8d3f274c9b7f75656b4f6a4d021c3b3def7af8214d02f23d2db6b27bfe42b4f291ff2fb81ce748492fc3faebfebd5103c13bb9bc

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.metauxsud.com
Port:
587
Username:
euro@metauxsud.com
Password:
hushpuppy2020
Email To:
dollar@metauxsud.com

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/2344-132-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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

21 checkip.dyndns.org
23 freegeoip.app
24 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

R980533211.exe

description pid process target process

PID 460 set thread context of 2344 460 R980533211.exe MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 2344 MSBuild.exe

flow	ioc
21	checkip.dyndns.org
23	freegeoip.app
24	freegeoip.app

description	pid	process	target process
PID 460 set thread context of 2344	460	R980533211.exe	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	2344	MSBuild.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

R980533211.exe

description	pid	process	target process
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe
PID 460 wrote to memory of 2344	460	R980533211.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\R980533211.exe
"C:\Users\Admin\AppData\Local\Temp\R980533211.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:460

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\R980533211.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2344

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/460-130-0x0000000000BD0000-0x0000000000C77000-memory.dmp

Filesize
668KB

Download
memory/2344-131-0x0000000000000000-mapping.dmp

Download
memory/2344-132-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2344-133-0x00000000053A0000-0x000000000543C000-memory.dmp

Filesize
624KB

Download
memory/2344-134-0x00000000059F0000-0x0000000005F94000-memory.dmp

Filesize
5.6MB

Download
memory/2344-135-0x00000000054B0000-0x0000000005516000-memory.dmp

Filesize
408KB

Download
memory/2344-136-0x0000000006AB0000-0x0000000006C72000-memory.dmp

Filesize
1.8MB

Download
memory/2344-137-0x0000000006980000-0x0000000006A12000-memory.dmp

Filesize
584KB

Download
memory/2344-138-0x0000000006940000-0x000000000694A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads