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 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3172-14-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral2/memory/3172-15-0x000000000047006E-mapping.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

12 freegeoip.app
13 freegeoip.app
9 checkip.dyndns.org

flow	ioc
12	freegeoip.app
13	freegeoip.app
9	checkip.dyndns.org

Suspicious use of SetThreadContext 2 IoCs

Processes:

invoice12212020.exeRegAsm.exe

description	pid	process	target process
PID 1628 set thread context of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 3428 set thread context of 3172	3428	RegAsm.exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

RegAsm.exe

pid process

3172 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3172 RegAsm.exe

pid	process
3172	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3172	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

invoice12212020.exeRegAsm.exeRegAsm.exe

description	pid	process	target process
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 1628 wrote to memory of 3428	1628	invoice12212020.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3428 wrote to memory of 3172	3428	RegAsm.exe	RegAsm.exe
PID 3172 wrote to memory of 3644	3172	RegAsm.exe	netsh.exe
PID 3172 wrote to memory of 3644	3172	RegAsm.exe	netsh.exe
PID 3172 wrote to memory of 3644	3172	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:1628

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:3428

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:3172

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
4⤵
PID:3644

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log
MD5
18b4b20964ba71871f587253160ae3b1

SHA1
b0670adc90ecec31186448446ed43fc188be4559

SHA256
cb7844efb0b5fa59684743fa546012600ffe6fcc3aeb6c243796c1b1d8978987

SHA512
3fd458c517e43734477b209d38cd79f44f0b46de2c81386f83db99bd2f1fe27bff6594422c747d6b7eb32d24738d7257c94716c28a26205200958265d0cb5826

Download Submit
memory/1628-3-0x0000000000CC0000-0x0000000000CC1000-memory.dmp

Filesize
4KB

Download
memory/1628-5-0x00000000055B0000-0x00000000055B1000-memory.dmp

Filesize
4KB

Download
memory/1628-6-0x0000000002FC0000-0x0000000002FD2000-memory.dmp

Filesize
72KB

Download
memory/1628-2-0x0000000073840000-0x0000000073F2E000-memory.dmp

Filesize
6.9MB

Download
memory/3172-22-0x0000000005030000-0x0000000005031000-memory.dmp

Filesize
4KB

Download
memory/3172-14-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/3172-15-0x000000000047006E-mapping.dmp

Download
memory/3172-17-0x0000000073500000-0x0000000073BEE000-memory.dmp

Filesize
6.9MB

Download
memory/3172-21-0x00000000054C0000-0x00000000054C1000-memory.dmp

Filesize
4KB

Download
memory/3172-24-0x0000000006440000-0x0000000006441000-memory.dmp

Filesize
4KB

Download
memory/3172-25-0x0000000006330000-0x0000000006331000-memory.dmp

Filesize
4KB

Download
memory/3172-26-0x00000000062F0000-0x00000000062F1000-memory.dmp

Filesize
4KB

Download
memory/3428-9-0x0000000073130000-0x000000007381E000-memory.dmp

Filesize
6.9MB

Download
memory/3428-8-0x0000000000482B5E-mapping.dmp

Download
memory/3428-7-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/3644-23-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads