matiex | 42ff1648e53d0054bc7c4a5c8a5db648c2a3405415d441c7d5801e52f56bf7a7

General

Target

3bcae8c41a076a0803c99fea75f2aa87.exe
Size

1.1MB
MD5

3bcae8c41a076a0803c99fea75f2aa87
SHA1

f2c1b01afcc3a3af6d947b39419bb4531daa8945
SHA256

42ff1648e53d0054bc7c4a5c8a5db648c2a3405415d441c7d5801e52f56bf7a7
SHA512

220880b1422811db1d9cd79030ea8005a7921ecabb580a3ed537d68bb068005f98b14a87e1f90f796d0d506ccd37675c9153a84e2ea0096bc45d55534f5e4113
SSDEEP

24576:5W5oaXpcB7mVSaccPuvcd5OGQT/1/0nS+7n4SYwqK4zf3RTsAHWAgqChJ+hu3A8K:giecrLh0oQRjeGAZ

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/3240-13-0x0000000000400000-0x0000000000472000-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-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe
Key opened	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe
Key opened	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.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
107	checkip.dyndns.org
109	freegeoip.app
110	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3824 set thread context of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106

Program crash 1 IoCs

pid	pid_target	Process	procid_target
544	3240	WerFault.exe	106

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3824	3bcae8c41a076a0803c99fea75f2aa87.exe
Token: SeDebugPrivilege	3240	3bcae8c41a076a0803c99fea75f2aa87.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106
PID 3824 wrote to memory of 3240	3824	3bcae8c41a076a0803c99fea75f2aa87.exe	106

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe

C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe
"C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe
  "C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3240
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3240 -s 2052
    3⤵
    - Program crash
    PID:544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3240 -ip 3240
1⤵
PID:1588

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/3240-13-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3240-21-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/3240-20-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/3240-19-0x0000000006C70000-0x0000000006E32000-memory.dmp

Filesize
1.8MB

Download
memory/3240-18-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/3240-17-0x0000000005280000-0x00000000052E6000-memory.dmp

Filesize
408KB

Download
memory/3240-14-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-5-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download
memory/3824-6-0x00000000051B0000-0x00000000051BA000-memory.dmp

Filesize
40KB

Download
memory/3824-9-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download
memory/3824-10-0x00000000065E0000-0x0000000006616000-memory.dmp

Filesize
216KB

Download
memory/3824-11-0x0000000000FD0000-0x000000000105E000-memory.dmp

Filesize
568KB

Download
memory/3824-12-0x00000000066B0000-0x0000000006728000-memory.dmp

Filesize
480KB

Download
memory/3824-7-0x00000000053F0000-0x0000000005446000-memory.dmp

Filesize
344KB

Download
memory/3824-8-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-0-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-16-0x0000000074D40000-0x00000000754F0000-memory.dmp

Filesize
7.7MB

Download
memory/3824-4-0x0000000005220000-0x00000000052B2000-memory.dmp

Filesize
584KB

Download
memory/3824-3-0x0000000005730000-0x0000000005CD4000-memory.dmp

Filesize
5.6MB

Download
memory/3824-2-0x0000000005090000-0x000000000512C000-memory.dmp

Filesize
624KB

Download
memory/3824-1-0x0000000000600000-0x000000000071C000-memory.dmp

Filesize
1.1MB

Download

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