matiex | 0cd342a69ae909916dcb8592e08e92ae6026bd0831179f46c95a8af1bc26e666

General

Target

b5a3eb26f3d7532eba91ea8122d8045e.exe
Size

1.2MB
MD5

b5a3eb26f3d7532eba91ea8122d8045e
SHA1

f12b2ff14004c73ea99e30dafab805e8dcb17df0
SHA256

0cd342a69ae909916dcb8592e08e92ae6026bd0831179f46c95a8af1bc26e666
SHA512

ba0dbe9a04725ced3f2beef7c27396a80a835c32ed9d4795be3de8a13cf3c4dc4d6b3a30d5668fda5269d9f744f17346bb04c3a10546ac34eab56721cf164965
SSDEEP

24576:2aLZZjhZStXqCFhg+Iu1WVq5J+hu3A8K/dwiGY1iQzB7oaRv/7d5OGQT4wFPuvUf:2mjhZShJgBbnJ

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 7 IoCs

resource	yara_rule
behavioral1/memory/2432-12-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2432-14-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2432-18-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2432-20-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2432-22-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2432-25-0x0000000005D10000-0x0000000005D50000-memory.dmp	family_matiex
behavioral1/memory/2432-27-0x0000000005D10000-0x0000000005D50000-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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b5a3eb26f3d7532eba91ea8122d8045e.exe
Key opened	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b5a3eb26f3d7532eba91ea8122d8045e.exe
Key opened	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b5a3eb26f3d7532eba91ea8122d8045e.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
2	checkip.dyndns.org
4	freegeoip.app
5	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1684 set thread context of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30

Program crash 1 IoCs

pid	pid_target	Process	procid_target
768	2432	WerFault.exe	30

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2432	b5a3eb26f3d7532eba91ea8122d8045e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe
Token: SeDebugPrivilege	2432	b5a3eb26f3d7532eba91ea8122d8045e.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 1684 wrote to memory of 2432	1684	b5a3eb26f3d7532eba91ea8122d8045e.exe	30
PID 2432 wrote to memory of 768	2432	b5a3eb26f3d7532eba91ea8122d8045e.exe	32
PID 2432 wrote to memory of 768	2432	b5a3eb26f3d7532eba91ea8122d8045e.exe	32
PID 2432 wrote to memory of 768	2432	b5a3eb26f3d7532eba91ea8122d8045e.exe	32
PID 2432 wrote to memory of 768	2432	b5a3eb26f3d7532eba91ea8122d8045e.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b5a3eb26f3d7532eba91ea8122d8045e.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b5a3eb26f3d7532eba91ea8122d8045e.exe

C:\Users\Admin\AppData\Local\Temp\b5a3eb26f3d7532eba91ea8122d8045e.exe
"C:\Users\Admin\AppData\Local\Temp\b5a3eb26f3d7532eba91ea8122d8045e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\b5a3eb26f3d7532eba91ea8122d8045e.exe
  "C:\Users\Admin\AppData\Local\Temp\b5a3eb26f3d7532eba91ea8122d8045e.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2432
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 1612
    3⤵
    - Program crash
    PID:768

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

memory/1684-0-0x0000000001130000-0x0000000001262000-memory.dmp

Filesize
1.2MB

Download
memory/1684-1-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/1684-2-0x0000000004E10000-0x0000000004E50000-memory.dmp

Filesize
256KB

Download
memory/1684-3-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/1684-4-0x0000000000800000-0x0000000000836000-memory.dmp

Filesize
216KB

Download
memory/1684-5-0x0000000004E10000-0x0000000004E50000-memory.dmp

Filesize
256KB

Download
memory/1684-6-0x000000000A050000-0x000000000A0E4000-memory.dmp

Filesize
592KB

Download
memory/1684-7-0x000000000A1F0000-0x000000000A268000-memory.dmp

Filesize
480KB

Download
memory/1684-23-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-12-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-10-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-14-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2432-18-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-20-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-22-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-24-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-8-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2432-25-0x0000000005D10000-0x0000000005D50000-memory.dmp

Filesize
256KB

Download
memory/2432-26-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-27-0x0000000005D10000-0x0000000005D50000-memory.dmp

Filesize
256KB

Download

Analysis

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