matiex | b070101a217e99f96198bed4917fe82d36f39bb227674e04ddded3faaa3eb289

General

Target

MMMMMUTYYYtrhOmoE27QSJu3X.exe
Size

796KB
MD5

acaf6ded35d9b26f5ad943f1cb9f7cae
SHA1

989f2c4d4cca185d62a20e6db00a8451691118d1
SHA256

b070101a217e99f96198bed4917fe82d36f39bb227674e04ddded3faaa3eb289
SHA512

99ce6c746e3a0f7175a7c5c77bb3c50a68ceca15a80f69162c759d40872653767a3f37b5f09eb4f7fea557d8a2847e1fd825cb6a31042afbec0fce30c340027a

Score

10^/10

matiex keylogger persistence spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
serv3.devmexico.com
Port:
587
Username:
[email protected]
Password:
3}l^pI#_4K_!
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
behavioral2/memory/3788-143-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex

Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

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:

MMMMMUTYYYtrhOmoE27QSJu3X.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	MMMMMUTYYYtrhOmoE27QSJu3X.exe

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
Suspicious use of SetThreadContext 1 IoCs

Processes:

MMMMMUTYYYtrhOmoE27QSJu3X.exe

description pid process target process

PID 4072 set thread context of 3788 4072 MMMMMUTYYYtrhOmoE27QSJu3X.exe MMMMMUTYYYtrhOmoE27QSJu3X.exe

description	pid	process	target process
PID 4072 set thread context of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe

Drops file in Windows directory 1 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotifyIcon.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.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

3252 schtasks.exe

pid	process
3252	schtasks.exe

Modifies data under HKEY_USERS 64 IoCs

Processes:

WaaSMedicAgent.exesvchost.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132885249802632025"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "3.305848"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0"	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

3632 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 3632 powershell.exe

pid	process
3632	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3632	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

MMMMMUTYYYtrhOmoE27QSJu3X.exe

description	pid	process	target process
PID 4072 wrote to memory of 3632	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	powershell.exe
PID 4072 wrote to memory of 3632	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	powershell.exe
PID 4072 wrote to memory of 3632	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	powershell.exe
PID 4072 wrote to memory of 3252	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	schtasks.exe
PID 4072 wrote to memory of 3252	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	schtasks.exe
PID 4072 wrote to memory of 3252	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	schtasks.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe
PID 4072 wrote to memory of 3788	4072	MMMMMUTYYYtrhOmoE27QSJu3X.exe	MMMMMUTYYYtrhOmoE27QSJu3X.exe

C:\Users\Admin\AppData\Local\Temp\MMMMMUTYYYtrhOmoE27QSJu3X.exe
"C:\Users\Admin\AppData\Local\Temp\MMMMMUTYYYtrhOmoE27QSJu3X.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4072

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pjhLgTuGCcPXYL.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3632

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pjhLgTuGCcPXYL" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCDA4.tmp"
2⤵
- Creates scheduled task(s)
PID:3252

C:\Users\Admin\AppData\Local\Temp\MMMMMUTYYYtrhOmoE27QSJu3X.exe
"C:\Users\Admin\AppData\Local\Temp\MMMMMUTYYYtrhOmoE27QSJu3X.exe"
2⤵
PID:3788

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:3052

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 233cc1c57d4842cbc3adac31b833faa1 3xPo5BvrXUKnC/dapMdD3A.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:3264

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:3704

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCDA4.tmp
MD5
eb0ea269157483c8bf42d152abf99f11

SHA1
a1058c6413e9febff2b9f974b38f72b831cb1ec7

SHA256
2d9583fb08d7c3690af0b414bde559e0ec44eb8a8674a721cc77ac4e04748ca4

SHA512
a99cd0c34b785ff7930e572567da15097bab7391bf0cc2a853fdf6727f3900c3e412097f675171137c15030018a7827620810ced1e9e78917af51e84c0a7bd65

Download Submit
memory/3632-139-0x0000000006FD0000-0x0000000006FD1000-memory.dmp

Filesize
4KB

Download
memory/3632-147-0x0000000007430000-0x0000000007496000-memory.dmp

Filesize
408KB

Download
memory/3632-145-0x0000000007390000-0x00000000073B2000-memory.dmp

Filesize
136KB

Download
memory/3632-142-0x0000000007610000-0x0000000007C38000-memory.dmp

Filesize
6.2MB

Download
memory/3632-140-0x0000000006FD2000-0x0000000006FD3000-memory.dmp

Filesize
4KB

Download
memory/3632-138-0x0000000004B10000-0x0000000004B46000-memory.dmp

Filesize
216KB

Download
memory/3788-144-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download
memory/3788-143-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/3788-146-0x0000000005360000-0x0000000005904000-memory.dmp

Filesize
5.6MB

Download
memory/4072-135-0x0000000000A10000-0x0000000000AAC000-memory.dmp

Filesize
624KB

Download
memory/4072-134-0x0000000004AD0000-0x0000000004ADA000-memory.dmp

Filesize
40KB

Download
memory/4072-133-0x0000000004C90000-0x0000000004C91000-memory.dmp

Filesize
4KB

Download
memory/4072-130-0x0000000000060000-0x000000000012E000-memory.dmp

Filesize
824KB

Download
memory/4072-132-0x0000000004B50000-0x0000000004BE2000-memory.dmp

Filesize
584KB

Download
memory/4072-131-0x0000000005260000-0x0000000005804000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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