matiex | b61135c1300d75395161127afafb71130bd1930db014cac9262ebda8ab38acc7

General

Target

nigga b nostartupp.exe
Size

1.5MB
MD5

eef35b609d37962c62bab1df4c0b3c39
SHA1

b009a2c43f9a959c72245e07bfbb32ceb8a2473d
SHA256

da92268cf4a384c5d170d5d4ef9939183328e699c0097bd02b716757a2bc0dde
SHA512

63c54c570a672c2baf246d49e674f55a0b9b51e69db6c7cb8ac4d26ea8b1910e1ada87dc26eaaee13cb3428b9fd06a6277f27db88cf282746a9d9cc5f4d935b5

Score

10^/10

matiex collection evasion keylogger stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1769394961:AAF5BB35akL859CwVaXypIqpVsGWlaKvi7A/sendMessage?chat_id=1735544933

Signatures

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

Matiex Main Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1816-62-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1816-63-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1816-64-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1816-66-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

nigga b nostartupp.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	nigga b nostartupp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	nigga b nostartupp.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

CasPol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.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.

Processes:

flow ioc

4 checkip.dyndns.org
8 freegeoip.app
9 freegeoip.app

flow	ioc
4	checkip.dyndns.org
8	freegeoip.app
9	freegeoip.app

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

nigga b nostartupp.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	nigga b nostartupp.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	nigga b nostartupp.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

nigga b nostartupp.exe

description pid process target process

PID 756 set thread context of 1816 756 nigga b nostartupp.exe CasPol.exe

description	pid	process	target process
PID 756 set thread context of 1816	756	nigga b nostartupp.exe	CasPol.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

nigga b nostartupp.exeCasPol.exe

pid	process
756	nigga b nostartupp.exe
756	nigga b nostartupp.exe
756	nigga b nostartupp.exe
756	nigga b nostartupp.exe
756	nigga b nostartupp.exe
756	nigga b nostartupp.exe
756	nigga b nostartupp.exe
1816	CasPol.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

CasPol.exe

pid process

1816 CasPol.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

nigga b nostartupp.exeCasPol.exe

description pid process

Token: SeDebugPrivilege 756 nigga b nostartupp.exe
Token: SeDebugPrivilege 1816 CasPol.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

CasPol.exe

pid process

1816 CasPol.exe

pid	process
1816	CasPol.exe

description	pid	process
Token: SeDebugPrivilege	756	nigga b nostartupp.exe
Token: SeDebugPrivilege	1816	CasPol.exe

pid	process
1816	CasPol.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

nigga b nostartupp.exeCasPol.exe

description	pid	process	target process
PID 756 wrote to memory of 1596	756	nigga b nostartupp.exe	dfsvc.exe
PID 756 wrote to memory of 1596	756	nigga b nostartupp.exe	dfsvc.exe
PID 756 wrote to memory of 1596	756	nigga b nostartupp.exe	dfsvc.exe
PID 756 wrote to memory of 1596	756	nigga b nostartupp.exe	dfsvc.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 756 wrote to memory of 1816	756	nigga b nostartupp.exe	CasPol.exe
PID 1816 wrote to memory of 976	1816	CasPol.exe	netsh.exe
PID 1816 wrote to memory of 976	1816	CasPol.exe	netsh.exe
PID 1816 wrote to memory of 976	1816	CasPol.exe	netsh.exe
PID 1816 wrote to memory of 976	1816	CasPol.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

CasPol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe

outlook_win_path 1 IoCs

Processes:

CasPol.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CasPol.exe

C:\Users\Admin\AppData\Local\Temp\nigga b nostartupp.exe
"C:\Users\Admin\AppData\Local\Temp\nigga b nostartupp.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:756

C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\dfsvc.exe"
2⤵
PID:1596

C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\CasPol.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1816

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:976

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/756-54-0x0000000000A60000-0x0000000000BEE000-memory.dmp

Filesize
1.6MB

Download
memory/756-55-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

Filesize
4KB

Download
memory/756-56-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download
memory/756-57-0x0000000000A00000-0x0000000000A01000-memory.dmp

Filesize
4KB

Download
memory/756-58-0x00000000045F0000-0x00000000046A0000-memory.dmp

Filesize
704KB

Download
memory/756-59-0x00000000004C0000-0x00000000004DA000-memory.dmp

Filesize
104KB

Download
memory/1816-60-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1816-61-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1816-62-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1816-63-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1816-64-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1816-66-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1816-67-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

Filesize
4KB

Download
memory/1816-68-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads