matiex | cd4d29b138b75a9d1a10fa7d724168ae155ef7779d97c042e8014b9ae6f93087

Analysis

max time kernel
140s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2024 01:49

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General

Target

$PLUGINSDIR/lqwipxz.dll
Size

17KB
MD5

148e2440033d4c9c35f68f4072ba5d1e
SHA1

480b6d0a378fa7e785e79de7e0f757dd7e8124e3
SHA256

47094fa8accf250c8df2021a0180140be6f1091415d44e9927e5ed6ba6c60bb4
SHA512

1a272ef57ad29b3481a1f18530168d1af7cc6a20bef32249412e0eadcc7dbd306157c3b8fca971ac21bde9cf7229370124cce29038bd3cc1ef93a03008c0367d
SSDEEP

384:mD4wra/y5RdIX0lcjIbqjC+/6ztBp9+JTjL:K4wrNp60lC8+C+/OpuTj

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

https://api.telegram.org/bot1395392888:AAFrJovDdZICOFB0gX0eGWrAUzEKCRpv8xo/sendMessage?chat_id=1300181783

Signatures

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

Matiex Main payload 6 IoCs

Processes:

resource	yara_rule
behavioral4/memory/1596-1-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral4/memory/1596-2-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral4/memory/1596-3-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral4/memory/1596-4-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral4/memory/1596-8-0x0000000005210000-0x0000000005286000-memory.dmp	family_matiex
behavioral4/memory/1596-15-0x0000000005320000-0x0000000005330000-memory.dmp	family_matiex

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow pid process

13 1596 rundll32.exe
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
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

flow	pid	process
13	1596	rundll32.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

12 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 4408 set thread context of 1596 4408 rundll32.exe rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2380 1596 WerFault.exe rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 1596 rundll32.exe

flow	ioc
12	checkip.dyndns.org

description	pid	process	target process
PID 4408 set thread context of 1596	4408	rundll32.exe	rundll32.exe

pid	pid_target	process	target process
2380	1596	WerFault.exe	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1596	rundll32.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4652 wrote to memory of 4408	4652	rundll32.exe	rundll32.exe
PID 4652 wrote to memory of 4408	4652	rundll32.exe	rundll32.exe
PID 4652 wrote to memory of 4408	4652	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe
PID 4408 wrote to memory of 1596	4408	rundll32.exe	rundll32.exe

outlook_office_path 1 IoCs

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

outlook_win_path 1 IoCs

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\lqwipxz.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4652

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\lqwipxz.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4408

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\lqwipxz.dll,#1
3⤵
- Blocklisted process makes network request
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 1752
4⤵
- Program crash
PID:2380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1596 -ip 1596
1⤵
PID:1004

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:1748

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

memory/1596-8-0x0000000005210000-0x0000000005286000-memory.dmp

Filesize
472KB

Download
memory/1596-13-0x0000000006290000-0x0000000006834000-memory.dmp

Filesize
5.6MB

Download
memory/1596-9-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/1596-3-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1596-4-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1596-17-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/1596-6-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/1596-7-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/1596-2-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1596-18-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/1596-11-0x00000000054E0000-0x0000000005546000-memory.dmp

Filesize
408KB

Download
memory/1596-10-0x0000000005440000-0x00000000054DC000-memory.dmp

Filesize
624KB

Download
memory/1596-12-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/1596-1-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1596-14-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/1596-15-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/1596-16-0x0000000005320000-0x0000000005330000-memory.dmp

Filesize
64KB

Download
memory/4408-5-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/4408-0-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download