matiex | 6c7311e2b17f44d10a2e029e4dce1db59d0b19131c744bb94083baa27badb137

General

Target
R3209011873.exe
Size 555KB
Sample220520-qm4mnagfdk
SHA256 ef7d84f2c3326943fbc546b736b513ceab056aa47bc8146ae205d7d5eac2622e
MD5 4c43289546bd0ae785093cf0ef3fba6c
SHA1 8987ba13f0aa35479b67bede2c77cb241f541f77
SHA512 c98a9c2c7a4ea46e59d0daf0e674b629f3abd09a3bb715e7b8f19263482149eb4381471f51047e8568a04547f1a45bf00bea6ea4c43ab46cebcf20b092146980
MD5 SHA1 SHA512

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol
smtp
Host
mail.metauxsud.com
Port
587
Username
[email protected]
Password
hushpuppy2020
Email to
[email protected]

Signatures

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

Matiex Main Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4544-140-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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.

flow	ioc
25	checkip.dyndns.org
27	freegeoip.app
28	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4132 set thread context of 4544	4132	R3209011873.exe	85

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4544	MSBuild.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 3612	2880	R3209011873.exe	78
PID 2880 wrote to memory of 3612	2880	R3209011873.exe	78
PID 2880 wrote to memory of 3612	2880	R3209011873.exe	78
PID 2880 wrote to memory of 1732	2880	R3209011873.exe	79
PID 2880 wrote to memory of 1732	2880	R3209011873.exe	79
PID 2880 wrote to memory of 1732	2880	R3209011873.exe	79
PID 1732 wrote to memory of 4120	1732	R3209011873.exe	80
PID 1732 wrote to memory of 4120	1732	R3209011873.exe	80
PID 1732 wrote to memory of 4120	1732	R3209011873.exe	80
PID 1732 wrote to memory of 4772	1732	R3209011873.exe	81
PID 1732 wrote to memory of 4772	1732	R3209011873.exe	81
PID 1732 wrote to memory of 4772	1732	R3209011873.exe	81
PID 4772 wrote to memory of 3884	4772	R3209011873.exe	83
PID 4772 wrote to memory of 3884	4772	R3209011873.exe	83
PID 4772 wrote to memory of 3884	4772	R3209011873.exe	83
PID 4772 wrote to memory of 4132	4772	R3209011873.exe	84
PID 4772 wrote to memory of 4132	4772	R3209011873.exe	84
PID 4772 wrote to memory of 4132	4772	R3209011873.exe	84
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85
PID 4132 wrote to memory of 4544	4132	R3209011873.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

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	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
"C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
  2⤵
  PID:3612
- C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
  "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1732
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
    3⤵
    PID:4120
- - C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
    "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4772
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
      4⤵
      PID:3884
  - - C:\Users\Admin\AppData\Local\Temp\R3209011873.exe
      "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:4132
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        
        "C:\Users\Admin\AppData\Local\Temp\R3209011873.exe"
        5⤵
        Accesses Microsoft Outlook profiles
        Suspicious use of AdjustPrivilegeToken
        outlook_office_path
        outlook_win_path
        
        PID:4544

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1732-133-0x0000000000E40000-0x0000000000ECE000-memory.dmp

Download

memory/2880-130-0x0000000000E40000-0x0000000000ECE000-memory.dmp

Download

memory/4544-140-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/4544-141-0x0000000005380000-0x000000000541C000-memory.dmp

Download

memory/4544-142-0x00000000059D0000-0x0000000005F74000-memory.dmp

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memory/4544-143-0x0000000005420000-0x0000000005486000-memory.dmp

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memory/4544-144-0x0000000006A30000-0x0000000006BF2000-memory.dmp

Download

memory/4544-145-0x0000000006900000-0x0000000006992000-memory.dmp

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memory/4544-146-0x00000000068C0000-0x00000000068CA000-memory.dmp

Download

memory/4772-136-0x0000000000E40000-0x0000000000ECE000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads