matiex | 5497370a1c39741caebb42d33e653266fa0d71810a1cec19aac99931ac81a15e

Analysis

max time kernel
136s
max time network
143s
platform
windows7_x64
resource
win7-en-20211208
submitted
21/02/2022, 22:30

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General

Target
NKP210102-NIT-SC2.exe
Size 779KB
Sample220221-2fa8babbh4
SHA256 af8629a317a5fe7aa5900f445cd855b902a495c497646c3ef1485ea5a9d026a7
MD5 087dfca6f2b2c9825a49d4b986d7f539
SHA1 748e44b93cf2882248b2e27c728eb11018984bf4
SHA512 25ab703c8261e1c36e4656b405b2aff6c8595bc26fe3b0f982e7249a90d6d6405d5f66ff8c28f8696d16c99a479718657dc669e0e4e5c2abe00e3ea03bac588d
MD5 SHA1 SHA512

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Credentials

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

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

resource	yara_rule
behavioral1/memory/1680-63-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1680-65-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1680-64-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1680-66-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\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.

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1220 set thread context of 1680	1220	NKP210102-NIT-SC2.exe	29

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
112	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1680	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1680	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1680	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 112	1220	NKP210102-NIT-SC2.exe	27
PID 1220 wrote to memory of 112	1220	NKP210102-NIT-SC2.exe	27
PID 1220 wrote to memory of 112	1220	NKP210102-NIT-SC2.exe	27
PID 1220 wrote to memory of 112	1220	NKP210102-NIT-SC2.exe	27
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29
PID 1220 wrote to memory of 1680	1220	NKP210102-NIT-SC2.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\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 use of WriteProcessMemory
PID:1220
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kVTLnkXYUzFB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4A88.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:112
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1680

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1220-57-0x0000000000360000-0x0000000000374000-memory.dmp

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memory/1220-56-0x0000000076071000-0x0000000076073000-memory.dmp

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memory/1220-54-0x00000000003A0000-0x0000000000468000-memory.dmp

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memory/1220-58-0x0000000004880000-0x0000000004881000-memory.dmp

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memory/1220-59-0x0000000005620000-0x00000000056E6000-memory.dmp

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memory/1220-55-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

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memory/1680-62-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/1680-61-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/1680-63-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/1680-65-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/1680-64-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/1680-66-0x0000000000400000-0x0000000000472000-memory.dmp

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memory/1680-67-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

Download

memory/1680-68-0x0000000005880000-0x0000000005881000-memory.dmp

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