matiex | 2d4c000be3c4793450b66bb80510f8d73c2894c0c1182bb29041428277ce3096

General

Target

NKP210102-NIT-SC2.exe
Size

897KB
MD5

65b5174a50b047604c2aed66369a4a88
SHA1

853e75392f379c6d9f655c53c881c45287ab2f6b
SHA256

8d8c5013933443f1f3e20db22a1abd56815cdd61b866f7953e032678f5e3d049
SHA512

04e5a3e89538fc8a7b83773f52a9424da327f7fc2709e2f64f977056078e9bee87fc9ebd29619607a63b8844d084f093aa8da7d223eb97154bdb8137312b0d0e

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.revistaeducar.com.ar
Port:
25
Username:
[email protected]
Password:
somchai#3774

Signatures

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

Matiex Main Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1620-62-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1620-64-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1620-63-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1620-65-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex

Drops startup file 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.url RegSvcs.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.url	RegSvcs.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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

9 freegeoip.app
4 checkip.dyndns.org
8 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

NKP210102-NIT-SC2.exe

description pid process target process

PID 1084 set thread context of 1620 1084 NKP210102-NIT-SC2.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

NKP210102-NIT-SC2.exeRegSvcs.exe

pid process

1084 NKP210102-NIT-SC2.exe
1620 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

NKP210102-NIT-SC2.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1084 NKP210102-NIT-SC2.exe
Token: SeDebugPrivilege 1620 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

1620 RegSvcs.exe

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

description	pid	process	target process
PID 1084 set thread context of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe

pid	process
1084	NKP210102-NIT-SC2.exe
1620	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1084	NKP210102-NIT-SC2.exe
Token: SeDebugPrivilege	1620	RegSvcs.exe

pid	process
1620	RegSvcs.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

NKP210102-NIT-SC2.exe

description	pid	process	target process
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1048	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe
PID 1084 wrote to memory of 1620	1084	NKP210102-NIT-SC2.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\NKP210102-NIT-SC2.exe
"C:\Users\Admin\AppData\Local\Temp\NKP210102-NIT-SC2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:1048

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1620

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/1084-55-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/1084-56-0x0000000000F20000-0x0000000001006000-memory.dmp

Filesize
920KB

Download
memory/1084-57-0x0000000000870000-0x0000000000871000-memory.dmp

Filesize
4KB

Download
memory/1084-58-0x0000000000520000-0x0000000000534000-memory.dmp

Filesize
80KB

Download
memory/1084-59-0x00000000055B0000-0x000000000567C000-memory.dmp

Filesize
816KB

Download
memory/1620-60-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1620-61-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1620-62-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1620-64-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1620-63-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1620-65-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1620-66-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/1620-67-0x0000000000A20000-0x0000000000A21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads