matiex | ab928789224fd46229b8c5caffab8625636b7005ba793c796c0696e157da4c99

General

Target

invoice12212020.exe
Size

603KB
MD5

c9c85baf97e31c3154ed9ceec13a928e
SHA1

f82c6587a0137e2e9384e824c4d1e30d415247e8
SHA256

ab928789224fd46229b8c5caffab8625636b7005ba793c796c0696e157da4c99
SHA512

18a748a66a6bd22c99c65e61bacf34e21da47a557595482ddeef5ecffa52ad19ae32b3bf606349cf8a36093f854a4ecaf694b3b5f4e80913a4b72bdb296e7b73

Score

10^/10

matiex keylogger spyware stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1336613640:AAGGq5LL3mwkNVhiwT8GF2n6V8PUAYwnbxI/sendMessage?chat_id=820431583

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/1848-14-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1848-15-0x000000000047006E-mapping.dmp	family_matiex
behavioral1/memory/1848-16-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1848-17-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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

4 checkip.dyndns.org
9 freegeoip.app
10 freegeoip.app

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

invoice12212020.exeRegAsm.exe

description	pid	process	target process
PID 1740 set thread context of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1424 set thread context of 1848	1424	RegAsm.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

RegAsm.exe

pid process

1848 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1848 RegAsm.exe

pid	process
1848	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1848	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

invoice12212020.exeRegAsm.exeRegAsm.exe

description	pid	process	target process
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1740 wrote to memory of 1424	1740	invoice12212020.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1424 wrote to memory of 1848	1424	RegAsm.exe	RegAsm.exe
PID 1848 wrote to memory of 524	1848	RegAsm.exe	netsh.exe
PID 1848 wrote to memory of 524	1848	RegAsm.exe	netsh.exe
PID 1848 wrote to memory of 524	1848	RegAsm.exe	netsh.exe
PID 1848 wrote to memory of 524	1848	RegAsm.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\invoice12212020.exe
"C:\Users\Admin\AppData\Local\Temp\invoice12212020.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1424

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1848

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
4⤵
PID:524

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/524-21-0x0000000000000000-mapping.dmp

Download
memory/1424-9-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/1424-6-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/1424-7-0x0000000000482B5E-mapping.dmp

Download
memory/1424-8-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/1424-10-0x0000000073470000-0x0000000073B5E000-memory.dmp

Filesize
6.9MB

Download
memory/1740-5-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/1740-2-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/1740-3-0x0000000000E80000-0x0000000000E81000-memory.dmp

Filesize
4KB

Download
memory/1848-14-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1848-15-0x000000000047006E-mapping.dmp

Download
memory/1848-16-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1848-17-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1848-18-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads