matiex | 78e494cf466d16bb68b782324fa83c0f597debcce4d3bac88301b3da116616d2

General

Target

MUYR09080.exe
Size

851KB
MD5

4138495cd942b253246d9bd965760aea
SHA1

fb80d388264dd3bd07b9a815958970f495e01021
SHA256

446a9c4fe226595e6a506d2a27c4b433b5651f9f8110ab289371f080a596a779
SHA512

a6c6fe65f34d53d0d8308baeb0ba022512ef9a6ac52e4f56b44eebd11833e37889f694353b0170b5a44df3391e59d23fe59782e97430d639c6bab9462f84165a

Score

10^/10

matiex keylogger stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1395392888:AAFrJovDdZICOFB0gX0eGWrAUzEKCRpv8xo/sendMessage?chat_id=1300181783

Signatures

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

Matiex Main Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1516-59-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral1/memory/1516-61-0x0000000001F70000-0x0000000001FE6000-memory.dmp	family_matiex

Loads dropped DLL 1 IoCs

Processes:

MUYR09080.exe

pid process

1136 MUYR09080.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

3 checkip.dyndns.org
7 freegeoip.app
8 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

MUYR09080.exe

description pid process target process

PID 1136 set thread context of 1516 1136 MUYR09080.exe MUYR09080.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

MUYR09080.exe

pid process

1516 MUYR09080.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

MUYR09080.exe

pid process

1136 MUYR09080.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MUYR09080.exe

description pid process

Token: SeDebugPrivilege 1516 MUYR09080.exe

pid	process
1136	MUYR09080.exe

flow	ioc
3	checkip.dyndns.org
7	freegeoip.app
8	freegeoip.app

description	pid	process	target process
PID 1136 set thread context of 1516	1136	MUYR09080.exe	MUYR09080.exe

pid	process
1516	MUYR09080.exe

pid	process
1136	MUYR09080.exe

description	pid	process
Token: SeDebugPrivilege	1516	MUYR09080.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

MUYR09080.exe

description	pid	process	target process
PID 1136 wrote to memory of 1516	1136	MUYR09080.exe	MUYR09080.exe
PID 1136 wrote to memory of 1516	1136	MUYR09080.exe	MUYR09080.exe
PID 1136 wrote to memory of 1516	1136	MUYR09080.exe	MUYR09080.exe
PID 1136 wrote to memory of 1516	1136	MUYR09080.exe	MUYR09080.exe
PID 1136 wrote to memory of 1516	1136	MUYR09080.exe	MUYR09080.exe

C:\Users\Admin\AppData\Local\Temp\MUYR09080.exe
"C:\Users\Admin\AppData\Local\Temp\MUYR09080.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1136

C:\Users\Admin\AppData\Local\Temp\MUYR09080.exe
"C:\Users\Admin\AppData\Local\Temp\MUYR09080.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsqC513.tmp\iga871x4ew8c.dll
MD5
7198b469fed0af13eabf0cd4031981d5

SHA1
b1bde0b35d8d0cfad7134e057124c3c607f8c80e

SHA256
b475fabe27e8006a3e4eb34ed5e4a49e2ef69b494c6b96e0abd8dddad3711858

SHA512
72c9fbd68463b1b6fe28503088bf8fca086cd4e9323c1d7df09ef45a37ccf34f79bc80eb97d1ebe7adcb4758b824b38e844f02d7198618059182ab3fb16e1fc7

Download Submit
memory/1136-55-0x00000000763B1000-0x00000000763B3000-memory.dmp

Filesize
8KB

Download
memory/1136-57-0x0000000000810000-0x0000000000815000-memory.dmp

Filesize
20KB

Download
memory/1516-59-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1516-60-0x0000000004751000-0x0000000004752000-memory.dmp

Filesize
4KB

Download
memory/1516-61-0x0000000001F70000-0x0000000001FE6000-memory.dmp

Filesize
472KB

Download
memory/1516-62-0x0000000004752000-0x0000000004753000-memory.dmp

Filesize
4KB

Download
memory/1516-64-0x0000000004754000-0x0000000004755000-memory.dmp

Filesize
4KB

Download
memory/1516-63-0x0000000004753000-0x0000000004754000-memory.dmp

Filesize
4KB

Download

Analysis

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