matiex | ee2ad2e20582f55bf1f770795c07595b22505be9e9c7f6b491889b976e051532

General

Target
DEKONT.exe
Size 611KB
Sample220427-ssramaeggr
SHA256 d57b7809ae71b779b00aa2e7e3b55c3ff6c210453e19a872489e330285031ed3
MD5 da248e530b6e65e7457a6d472e0aeb47
SHA1 84ab397a9d4008c916666d9119e9fdc4b70d5642
SHA512 dfae1e4876df412dbe8137c725a99023485e9e9a8cfbbeeb2026015903ed1522b2d3b1f613c3f4107880c484ee2314907341edb77f1091c670dde4b1dbf47589
MD5 SHA1 SHA512

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol
smtp
Host
srvc13.turhost.com
Port
587
Username
[email protected]
Password
italik2015

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/3828-133-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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
27	checkip.dyndns.org
35	freegeoip.app
36	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2904 set thread context of 3828	2904	DEKONT.exe	85

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4060	3828	WerFault.exe	85

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2904	DEKONT.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3828	MSBuild.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 4508	2904	DEKONT.exe	84
PID 2904 wrote to memory of 4508	2904	DEKONT.exe	84
PID 2904 wrote to memory of 4508	2904	DEKONT.exe	84
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	85
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	85
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	85
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\DEKONT.exe
"C:\Users\Admin\AppData\Local\Temp\DEKONT.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:4508
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3828
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3828 -s 1992
    3⤵
    - Program crash
    PID:4060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3828 -ip 3828
1⤵
PID:4304

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/2904-131-0x0000000000AFD000-0x0000000000B00000-memory.dmp

Download

memory/3828-133-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/3828-134-0x0000000004F70000-0x000000000500C000-memory.dmp

Download

memory/3828-135-0x00000000055C0000-0x0000000005B64000-memory.dmp

Download

memory/3828-136-0x0000000005080000-0x00000000050E6000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads