matiex | a80660a551d427bd67935c0380d3edca52a17a57005dde154ba2acfd29bebade

General

Target

f5142955783a16ea5957a10c51e64f33.exe
Size

1.5MB
MD5

f5142955783a16ea5957a10c51e64f33
SHA1

c843043f0b39623bf0862f8460b669c923b4c2e9
SHA256

a80660a551d427bd67935c0380d3edca52a17a57005dde154ba2acfd29bebade
SHA512

e214ac6ba2d3cb4d9b6c77fc7ce87345d196542f50531d93b103803b5f5c16c4bb59424325ad8ccbf7095af6db1428c4ffea489287aa73aae2358734913870b5
SSDEEP

24576:lUkmlW5oaXpcB7mVSaccPuvcd5OGQT/1/0nS+7n4SYwqK4zf3RTsAHWAgqChJ+ho:6eiec6kqn2dpsNQuiNB/e

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 2 IoCs

resource	yara_rule
behavioral2/memory/3148-13-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral2/memory/3148-19-0x00000000052E0000-0x00000000052F0000-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-1-5-21-3336304223-2978740688-3645194410-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f5142955783a16ea5957a10c51e64f33.exe
Key opened	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f5142955783a16ea5957a10c51e64f33.exe
Key opened	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f5142955783a16ea5957a10c51e64f33.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
106	checkip.dyndns.org
109	freegeoip.app
110	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2948 set thread context of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3368	3148	WerFault.exe	102

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	f5142955783a16ea5957a10c51e64f33.exe
Token: SeDebugPrivilege	3148	f5142955783a16ea5957a10c51e64f33.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102
PID 2948 wrote to memory of 3148	2948	f5142955783a16ea5957a10c51e64f33.exe	102

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f5142955783a16ea5957a10c51e64f33.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f5142955783a16ea5957a10c51e64f33.exe

C:\Users\Admin\AppData\Local\Temp\f5142955783a16ea5957a10c51e64f33.exe
"C:\Users\Admin\AppData\Local\Temp\f5142955783a16ea5957a10c51e64f33.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Users\Admin\AppData\Local\Temp\f5142955783a16ea5957a10c51e64f33.exe
  "C:\Users\Admin\AppData\Local\Temp\f5142955783a16ea5957a10c51e64f33.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3148
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3148 -s 2032
    3⤵
    - Program crash
    PID:3368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 3148 -ip 3148
1⤵
PID:3800

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\f5142955783a16ea5957a10c51e64f33.exe.log

Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
memory/2948-10-0x0000000004D20000-0x0000000004D56000-memory.dmp

Filesize
216KB

Download
memory/2948-2-0x0000000005320000-0x00000000053BC000-memory.dmp

Filesize
624KB

Download
memory/2948-3-0x00000000059C0000-0x0000000005F64000-memory.dmp

Filesize
5.6MB

Download
memory/2948-4-0x00000000054B0000-0x0000000005542000-memory.dmp

Filesize
584KB

Download
memory/2948-5-0x0000000005480000-0x0000000005490000-memory.dmp

Filesize
64KB

Download
memory/2948-7-0x00000000056A0000-0x00000000056F6000-memory.dmp

Filesize
344KB

Download
memory/2948-6-0x0000000005450000-0x000000000545A000-memory.dmp

Filesize
40KB

Download
memory/2948-8-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/2948-0-0x0000000000830000-0x00000000009AC000-memory.dmp

Filesize
1.5MB

Download
memory/2948-9-0x0000000005480000-0x0000000005490000-memory.dmp

Filesize
64KB

Download
memory/2948-17-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/2948-12-0x0000000006800000-0x0000000006874000-memory.dmp

Filesize
464KB

Download
memory/2948-11-0x0000000006670000-0x00000000066FE000-memory.dmp

Filesize
568KB

Download
memory/2948-1-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/3148-16-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download
memory/3148-13-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/3148-18-0x0000000002A00000-0x0000000002A66000-memory.dmp

Filesize
408KB

Download
memory/3148-19-0x00000000052E0000-0x00000000052F0000-memory.dmp

Filesize
64KB

Download
memory/3148-20-0x00000000068F0000-0x0000000006AB2000-memory.dmp

Filesize
1.8MB

Download
memory/3148-21-0x00000000748F0000-0x00000000750A0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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