matiex | 56f473eb624769a6eb77762eba09ecfbb6e25f513e4280207de5ae06663e5452

General

Target

467890987654323456789098765432345678.exe
Size

299KB
MD5

e04c69c79193ccaac508fe7279a1804f
SHA1

75930a5d0e35815f213475e7af644f19f4ed14bf
SHA256

56f473eb624769a6eb77762eba09ecfbb6e25f513e4280207de5ae06663e5452
SHA512

fcf2671f30495f16fe2a8399f2536bb2e193ea774aa5e0f6f30f861eb0f145a43217522ddfb8af401cb41d92f5043cf8b9f6580aaff80006525b6cd5810674c9

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Signatures

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

Matiex Main Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/524-56-0x0000000000400000-0x0000000000482000-memory.dmp	family_matiex
behavioral1/memory/524-58-0x0000000000400000-0x0000000000482000-memory.dmp	family_matiex
behavioral1/memory/524-60-0x00000000045C0000-0x0000000004632000-memory.dmp	family_matiex

Loads dropped DLL 1 IoCs

Processes:

467890987654323456789098765432345678.exe

pid process

1628 467890987654323456789098765432345678.exe
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
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

pid	process
1628	467890987654323456789098765432345678.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

467890987654323456789098765432345678.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	467890987654323456789098765432345678.exe
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	467890987654323456789098765432345678.exe
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	467890987654323456789098765432345678.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

4 checkip.dyndns.org

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

467890987654323456789098765432345678.exe

description	pid	process	target process
PID 1628 set thread context of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.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

1100 524 WerFault.exe 467890987654323456789098765432345678.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1100 WerFault.exe
1100 WerFault.exe
1100 WerFault.exe
1100 WerFault.exe
1100 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1100 WerFault.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

467890987654323456789098765432345678.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 524 467890987654323456789098765432345678.exe
Token: SeDebugPrivilege 1100 WerFault.exe

pid	pid_target	process	target process
1100	524	WerFault.exe	467890987654323456789098765432345678.exe

pid	process
1100	WerFault.exe
1100	WerFault.exe
1100	WerFault.exe
1100	WerFault.exe
1100	WerFault.exe

pid	process
1100	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	524	467890987654323456789098765432345678.exe
Token: SeDebugPrivilege	1100	WerFault.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

467890987654323456789098765432345678.exe467890987654323456789098765432345678.exe

outlook_office_path 1 IoCs

Processes:

467890987654323456789098765432345678.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	467890987654323456789098765432345678.exe

outlook_win_path 1 IoCs

Processes:

467890987654323456789098765432345678.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	467890987654323456789098765432345678.exe

C:\Users\Admin\AppData\Local\Temp\467890987654323456789098765432345678.exe
"C:\Users\Admin\AppData\Local\Temp\467890987654323456789098765432345678.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1628

C:\Users\Admin\AppData\Local\Temp\467890987654323456789098765432345678.exe
"C:\Users\Admin\AppData\Local\Temp\467890987654323456789098765432345678.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 524 -s 1152
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsyCC08.tmp\gememaop.dll
MD5
cea2c1f8c33480b4194e50513bda2117

SHA1
edad90b4aaff17a6cad7577a64d607750635275e

SHA256
dcc77f4cf402ac1bb45d437ea154dec3a509bba62cc9c23833d262d3152a5e06

SHA512
37c49bed21825573f5f88433d7b844ce4c10c31c0fc15cd690f1b4eeeecf3c4192b1639f3974e22da799f275a0af457f817300c4be3f52f102105a2ddf571e85

Download Submit
memory/524-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/524-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/524-59-0x0000000004581000-0x0000000004582000-memory.dmp

Filesize
4KB

Download
memory/524-60-0x00000000045C0000-0x0000000004632000-memory.dmp

Filesize
456KB

Download
memory/524-61-0x0000000004582000-0x0000000004583000-memory.dmp

Filesize
4KB

Download
memory/524-62-0x0000000004583000-0x0000000004584000-memory.dmp

Filesize
4KB

Download
memory/524-63-0x0000000004584000-0x0000000004585000-memory.dmp

Filesize
4KB

Download
memory/1100-65-0x00000000004A0000-0x00000000004D2000-memory.dmp

Filesize
200KB

Download
memory/1628-54-0x00000000751B1000-0x00000000751B3000-memory.dmp

Filesize
8KB

Download

description	pid	process	target process
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 1628 wrote to memory of 524	1628	467890987654323456789098765432345678.exe	467890987654323456789098765432345678.exe
PID 524 wrote to memory of 1100	524	467890987654323456789098765432345678.exe	WerFault.exe
PID 524 wrote to memory of 1100	524	467890987654323456789098765432345678.exe	WerFault.exe
PID 524 wrote to memory of 1100	524	467890987654323456789098765432345678.exe	WerFault.exe
PID 524 wrote to memory of 1100	524	467890987654323456789098765432345678.exe	WerFault.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads