matiex | 983790f3afb9aa0fb567435bb73750a94e66d134cf6dbc2566089af6d6c0ce34

General

Target

Enijidjm.exe
Size

111KB
MD5

dda708bbd533046daf479fd123f75cda
SHA1

b8dc0fa033f434eafe46df7c0320676c866814cb
SHA256

f442097ffe0336d6712267088a4368aa539f51f7ea7d1e950da88c6a42f1b29e
SHA512

b6c983e27964446d6c8c3dcb6f03d0cbb957fd2c2cbe2888444372a4a3b69b22d3e9b3e401972aa5b365bc6b810dbffef9aa0aaeb50bf8e31f720f173b961e58

Score

10^/10

matiex collection keylogger persistence stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
serv3.devmexico.com
Port:
587
Username:
[email protected]
Password:
3}l^pI#_4K_!

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/4664-136-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Enijidjm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Test = "\"C:\\Users\\Admin\\AppData\\Roaming\\Demo\\Test.exe\""	Enijidjm.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

48 freegeoip.app
45 checkip.dyndns.org
47 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

Enijidjm.exe

description pid process target process

PID 1572 set thread context of 4664 1572 Enijidjm.exe MSBuild.exe

flow	ioc
48	freegeoip.app
45	checkip.dyndns.org
47	freegeoip.app

description	pid	process	target process
PID 1572 set thread context of 4664	1572	Enijidjm.exe	MSBuild.exe

Drops file in Windows directory 8 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Enijidjm.exeMSBuild.exe

pid process

1572 Enijidjm.exe
1572 Enijidjm.exe
4664 MSBuild.exe

pid	process
1572	Enijidjm.exe
1572	Enijidjm.exe
4664	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

svchost.exeTiWorker.exeEnijidjm.exe

description	pid	process
Token: SeShutdownPrivilege	2484	svchost.exe
Token: SeCreatePagefilePrivilege	2484	svchost.exe
Token: SeShutdownPrivilege	2484	svchost.exe
Token: SeCreatePagefilePrivilege	2484	svchost.exe
Token: SeShutdownPrivilege	2484	svchost.exe
Token: SeCreatePagefilePrivilege	2484	svchost.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeDebugPrivilege	1572	Enijidjm.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe
Token: SeBackupPrivilege	3860	TiWorker.exe
Token: SeRestorePrivilege	3860	TiWorker.exe
Token: SeSecurityPrivilege	3860	TiWorker.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Enijidjm.exe

description	pid	process	target process
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe
PID 1572 wrote to memory of 4664	1572	Enijidjm.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Enijidjm.exe
"C:\Users\Admin\AppData\Local\Temp\Enijidjm.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1572

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- outlook_office_path
- outlook_win_path
PID:4664

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2484

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1572-130-0x0000000000A10000-0x0000000000A30000-memory.dmp

Filesize
128KB

Download
memory/1572-131-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/1572-135-0x00000000054F0000-0x00000000054F1000-memory.dmp

Filesize
4KB

Download
memory/2484-132-0x00000247C4790000-0x00000247C47A0000-memory.dmp

Filesize
64KB

Download
memory/2484-133-0x00000247C4F60000-0x00000247C4F70000-memory.dmp

Filesize
64KB

Download
memory/2484-134-0x00000247C7B70000-0x00000247C7B74000-memory.dmp

Filesize
16KB

Download
memory/4664-136-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4664-137-0x00000000050E0000-0x000000000517C000-memory.dmp

Filesize
624KB

Download
memory/4664-138-0x0000000005730000-0x0000000005CD4000-memory.dmp

Filesize
5.6MB

Download
memory/4664-139-0x0000000005180000-0x00000000051E6000-memory.dmp

Filesize
408KB

Download
memory/4664-140-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/4664-141-0x0000000005280000-0x0000000005281000-memory.dmp

Filesize
4KB

Download
memory/4664-142-0x00000000067D0000-0x0000000006992000-memory.dmp

Filesize
1.8MB

Download
memory/4664-143-0x00000000066A0000-0x0000000006732000-memory.dmp

Filesize
584KB

Download
memory/4664-144-0x0000000006620000-0x000000000662A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads