matiex | 4ccd414ea068d3fb02fb086a88cc08ba851f3787fdf25e12af76e812c5be15ea

General

Target
546632 - MARITIME WK-2 OCT.exe
Size 773KB
Sample220502-sc399afee2
SHA256 d033f6fc657267d6aa462537cc47ea3f7379b86cbadf6499199c7e6906b107b3
MD5 910f1f2bdb64a368db77afd1491ed7e3
SHA1 c9e60b441c2a1ccabe57454f9e737cdbb74d372f
SHA512 62a0c2165b6e71a3406801b99fa1a1d1ecb57ed92413084569b1591c5c5c5cb691fa31f5cee5a2f5b9f1ac4ce7ff626ec59427eee96f014cebf391f1cc278ac6
MD5 SHA1 SHA512

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol
smtp
Host
mail.avicorrpinc.com
Port
587
Username
[email protected]
Password
admin@abc123
Email to
[email protected]

Signatures

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

Matiex Main Payload 6 IoCs

resource	yara_rule
behavioral1/memory/1448-62-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1448-63-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1448-64-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1448-65-0x000000000046E01E-mapping.dmp	family_matiex
behavioral1/memory/1448-67-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1448-69-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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.

flow	ioc
4	checkip.dyndns.org
8	freegeoip.app
9	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 812 set thread context of 1448	812	546632 - MARITIME WK-2 OCT.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1004	1448	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
812	546632 - MARITIME WK-2 OCT.exe
812	546632 - MARITIME WK-2 OCT.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	546632 - MARITIME WK-2 OCT.exe
Token: SeDebugPrivilege	1448	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 812 wrote to memory of 1448	812	546632 - MARITIME WK-2 OCT.exe	27
PID 1448 wrote to memory of 1004	1448	MSBuild.exe	29
PID 1448 wrote to memory of 1004	1448	MSBuild.exe	29
PID 1448 wrote to memory of 1004	1448	MSBuild.exe	29
PID 1448 wrote to memory of 1004	1448	MSBuild.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\546632 - MARITIME WK-2 OCT.exe
"C:\Users\Admin\AppData\Local\Temp\546632 - MARITIME WK-2 OCT.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1448
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1448 -s 1736
    3⤵
    - Program crash
    PID:1004

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/812-54-0x00000000001B0000-0x0000000000278000-memory.dmp

Download

memory/812-55-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Download

memory/812-56-0x00000000002B0000-0x00000000002BA000-memory.dmp

Download

memory/812-57-0x0000000005190000-0x000000000520C000-memory.dmp

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memory/812-58-0x0000000005C60000-0x0000000005D0C000-memory.dmp

Download

memory/1448-60-0x0000000000400000-0x0000000000474000-memory.dmp

Download

memory/1448-62-0x0000000000400000-0x0000000000474000-memory.dmp

Download

memory/1448-63-0x0000000000400000-0x0000000000474000-memory.dmp

Download

memory/1448-64-0x0000000000400000-0x0000000000474000-memory.dmp

Download

memory/1448-67-0x0000000000400000-0x0000000000474000-memory.dmp

Download

memory/1448-69-0x0000000000400000-0x0000000000474000-memory.dmp

Download

memory/1448-59-0x0000000000400000-0x0000000000474000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads