matiex | da6761f510410bffddc3d88f53c4a63f2be0c56eee45e5c8f2d82081d84d14d3

General

Target

pictures.exe
Size

720KB
MD5

80e998b0d647b192f3d888cfacd01f34
SHA1

7902df564b9570835e54206ea2df187b9bce61a0
SHA256

de44283f7ccd395563808b6959085c30fad50e32d8a016b201c492f1f92e41d6
SHA512

6936fa0066d1dc97d9c133ba9c3cea97d103c0099eec872f59e99d175f9a1e8fbfdd7f04fb0ca74e01dd6ce5af91dc81ba1e308bf590f2a2001c0fc86652aca0

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
smtp.privateemail.com
Port:
587
Username:
[email protected]
Password:
coronavirus2020
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

Processes:

resource	yara_rule
behavioral6/memory/536-137-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

pictures.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	pictures.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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

pictures.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	pictures.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	pictures.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	pictures.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

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

Processes:

pictures.exe

description pid process target process

PID 3404 set thread context of 536 3404 pictures.exe pictures.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4464 536 WerFault.exe pictures.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

2512 schtasks.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

pictures.exe

description pid process

Token: SeDebugPrivilege 536 pictures.exe

flow	ioc
39	checkip.dyndns.org

description	pid	process	target process
PID 3404 set thread context of 536	3404	pictures.exe	pictures.exe

pid	pid_target	process	target process
4464	536	WerFault.exe	pictures.exe

pid	process
2512	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	536	pictures.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

pictures.exe

description	pid	process	target process
PID 3404 wrote to memory of 2512	3404	pictures.exe	schtasks.exe
PID 3404 wrote to memory of 2512	3404	pictures.exe	schtasks.exe
PID 3404 wrote to memory of 2512	3404	pictures.exe	schtasks.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe
PID 3404 wrote to memory of 536	3404	pictures.exe	pictures.exe

outlook_office_path 1 IoCs

Processes:

pictures.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	pictures.exe

outlook_win_path 1 IoCs

Processes:

pictures.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	pictures.exe

C:\Users\Admin\AppData\Local\Temp\pictures.exe
"C:\Users\Admin\AppData\Local\Temp\pictures.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\uapflQI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9FDA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2512
- C:\Users\Admin\AppData\Local\Temp\pictures.exe
  "C:\Users\Admin\AppData\Local\Temp\pictures.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:536
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 536 -s 1696
    3⤵
    - Program crash
    PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 536 -ip 536
1⤵
PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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\pictures.exe.log

Filesize
507B

MD5
d1a92622541a19a1840491deb2bb5e6d

SHA1
5b61bb7d8973644f736968ea416ec502a0ae9bce

SHA256
3b453ecc382d28d36f2c3c33634d332f856389fc3d709e40cbe9be8076da7a3c

SHA512
c451f1b9a3dd7c9c2acb1174c0029591f60193b99c9d2712701e182f94fdc89cf93053b402b1ffc26ff5876bec38df7e105c4fe975826acdf6bd215011bcfe41

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9FDA.tmp

Filesize
1KB

MD5
5de210c01d73f06e46ec1e33968366d8

SHA1
3cffba870d37ba53550afb853f03c71cec1d4e27

SHA256
8553a941d86570197f0bc66fd1e99658ff9eae040c9c7723914f0f51133bdaf9

SHA512
7075b6d0140a52ea9de315699662442ad387f7c27e6829f4b21f99a640aef7e93f1969c881d65970bdd1fdd57328b3ec8a032432d13db7d04576b2934bfbb013

Download Submit
memory/536-136-0x0000000000000000-mapping.dmp

Download
memory/536-137-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/536-139-0x0000000005850000-0x00000000058B6000-memory.dmp

Filesize
408KB

Download
memory/2512-134-0x0000000000000000-mapping.dmp

Download
memory/3404-130-0x0000000000800000-0x00000000008BA000-memory.dmp

Filesize
744KB

Download
memory/3404-131-0x0000000005280000-0x0000000005312000-memory.dmp

Filesize
584KB

Download
memory/3404-132-0x0000000005A00000-0x0000000005A9C000-memory.dmp

Filesize
624KB

Download
memory/3404-133-0x0000000006050000-0x00000000065F4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads