matiex | ee2ad2e20582f55bf1f770795c07595b22505be9e9c7f6b491889b976e051532

General

Target

DEKONT.exe
Size

611KB
MD5

da248e530b6e65e7457a6d472e0aeb47
SHA1

84ab397a9d4008c916666d9119e9fdc4b70d5642
SHA256

d57b7809ae71b779b00aa2e7e3b55c3ff6c210453e19a872489e330285031ed3
SHA512

dfae1e4876df412dbe8137c725a99023485e9e9a8cfbbeeb2026015903ed1522b2d3b1f613c3f4107880c484ee2314907341edb77f1091c670dde4b1dbf47589

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

Processes:

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

Processes:

MSBuild.exe

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.

Processes:

flow ioc

27 checkip.dyndns.org
35 freegeoip.app
36 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

DEKONT.exe

description pid process target process

PID 2904 set thread context of 3828 2904 DEKONT.exe MSBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4060 3828 WerFault.exe MSBuild.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

DEKONT.exe

pid process

2904 DEKONT.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 3828 MSBuild.exe

flow	ioc
27	checkip.dyndns.org
35	freegeoip.app
36	freegeoip.app

description	pid	process	target process
PID 2904 set thread context of 3828	2904	DEKONT.exe	MSBuild.exe

pid	pid_target	process	target process
4060	3828	WerFault.exe	MSBuild.exe

pid	process
2904	DEKONT.exe

description	pid	process
Token: SeDebugPrivilege	3828	MSBuild.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

DEKONT.exe

description	pid	process	target process
PID 2904 wrote to memory of 4508	2904	DEKONT.exe	cmd.exe
PID 2904 wrote to memory of 4508	2904	DEKONT.exe	cmd.exe
PID 2904 wrote to memory of 4508	2904	DEKONT.exe	cmd.exe
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	MSBuild.exe
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	MSBuild.exe
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	MSBuild.exe
PID 2904 wrote to memory of 3828	2904	DEKONT.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

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

Processes:

MSBuild.exe

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

Filesize
12KB

Download
memory/3828-132-0x0000000000000000-mapping.dmp

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

Filesize
456KB

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

Filesize
624KB

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

Filesize
5.6MB

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

Filesize
408KB

Download
memory/4508-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads