matiex | 4c65f92cd878c051338bda2ff251c8714d6b7ae2bcea06e73bc954661e993571

General

Target

eb5c3f8a581a2bbe778a586697a9b341.exe
Size

870KB
MD5

eb5c3f8a581a2bbe778a586697a9b341
SHA1

4d54306bc2410cece081f1db159665962df9a8da
SHA256

4c65f92cd878c051338bda2ff251c8714d6b7ae2bcea06e73bc954661e993571
SHA512

2878804b5beb838661d983dd7e4ccf48a872a512b4d6260159b3de2fd85d00149869d30a26677500b51b13af6485180441acbdba0a0c7a981c8efb07d4752fc0
SSDEEP

12288:fhv7hZb9YMbf50NQVB2ON9sDJoyVIyeichX/7NDBV9ghPwFy2ewne0:Jtl9fR0eDRsDW/XRNw4FBXe

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.thts.vn
Port:
25
Username:
[email protected]
Password:
123luongngan1989
Email To:
[email protected]

Signatures

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

Matiex Main payload 1 IoCs

resource	yara_rule
behavioral2/memory/4384-11-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

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
T1552.001
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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	eb5c3f8a581a2bbe778a586697a9b341.exe
Key opened	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	eb5c3f8a581a2bbe778a586697a9b341.exe
Key opened	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	eb5c3f8a581a2bbe778a586697a9b341.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
46	checkip.dyndns.org
49	freegeoip.app
50	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1572 set thread context of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2948	4384	WerFault.exe	97

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1572	eb5c3f8a581a2bbe778a586697a9b341.exe
1572	eb5c3f8a581a2bbe778a586697a9b341.exe
1572	eb5c3f8a581a2bbe778a586697a9b341.exe
1572	eb5c3f8a581a2bbe778a586697a9b341.exe
1572	eb5c3f8a581a2bbe778a586697a9b341.exe
1572	eb5c3f8a581a2bbe778a586697a9b341.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1572	eb5c3f8a581a2bbe778a586697a9b341.exe
Token: SeDebugPrivilege	4384	eb5c3f8a581a2bbe778a586697a9b341.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 1500	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	94
PID 1572 wrote to memory of 1500	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	94
PID 1572 wrote to memory of 1500	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	94
PID 1572 wrote to memory of 540	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	95
PID 1572 wrote to memory of 540	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	95
PID 1572 wrote to memory of 540	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	95
PID 1572 wrote to memory of 1984	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	96
PID 1572 wrote to memory of 1984	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	96
PID 1572 wrote to memory of 1984	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	96
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97
PID 1572 wrote to memory of 4384	1572	eb5c3f8a581a2bbe778a586697a9b341.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	eb5c3f8a581a2bbe778a586697a9b341.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	eb5c3f8a581a2bbe778a586697a9b341.exe

C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe
"C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe
  "C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"
  2⤵
  PID:1500
- C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe
  "C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"
  2⤵
  PID:540
- C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe
  "C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"
  2⤵
  PID:1984
- C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe
  "C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4384
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 1652
    3⤵
    - Program crash
    PID:2948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4384 -ip 4384
1⤵
PID:2936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\eb5c3f8a581a2bbe778a586697a9b341.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1572-4-0x0000000005200000-0x0000000005210000-memory.dmp

Filesize
64KB

Download
memory/1572-16-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/1572-3-0x0000000005030000-0x00000000050C2000-memory.dmp

Filesize
584KB

Download
memory/1572-0-0x0000000000680000-0x0000000000760000-memory.dmp

Filesize
896KB

Download
memory/1572-5-0x00000000051C0000-0x00000000051CA000-memory.dmp

Filesize
40KB

Download
memory/1572-6-0x0000000005520000-0x0000000005538000-memory.dmp

Filesize
96KB

Download
memory/1572-7-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/1572-8-0x0000000005200000-0x0000000005210000-memory.dmp

Filesize
64KB

Download
memory/1572-2-0x0000000005540000-0x0000000005AE4000-memory.dmp

Filesize
5.6MB

Download
memory/1572-9-0x00000000079C0000-0x0000000007A5C000-memory.dmp

Filesize
624KB

Download
memory/1572-10-0x0000000007BC0000-0x0000000007C7A000-memory.dmp

Filesize
744KB

Download
memory/1572-1-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/4384-11-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4384-15-0x00000000056E0000-0x0000000005746000-memory.dmp

Filesize
408KB

Download
memory/4384-17-0x0000000005600000-0x0000000005610000-memory.dmp

Filesize
64KB

Download
memory/4384-14-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download
memory/4384-18-0x0000000006F70000-0x0000000007132000-memory.dmp

Filesize
1.8MB

Download
memory/4384-19-0x0000000074880000-0x0000000075030000-memory.dmp

Filesize
7.7MB

Download

Analysis

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