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 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1040-63-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1040-64-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1040-65-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1040-66-0x0000000000400000-0x0000000000472000-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-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Office\16.0\Outlook\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-1-5-21-2329389628-4064185017-3901522362-1000\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

7 checkip.dyndns.org
11 freegeoip.app
12 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

Enijidjm.exe

description pid process target process

PID 1180 set thread context of 1040 1180 Enijidjm.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Enijidjm.exeMSBuild.exe

pid process

1180 Enijidjm.exe
1040 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Enijidjm.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1180 Enijidjm.exe
Token: SeDebugPrivilege 1040 MSBuild.exe

flow	ioc
7	checkip.dyndns.org
11	freegeoip.app
12	freegeoip.app

description	pid	process	target process
PID 1180 set thread context of 1040	1180	Enijidjm.exe	MSBuild.exe

pid	process
1180	Enijidjm.exe
1040	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1180	Enijidjm.exe
Token: SeDebugPrivilege	1040	MSBuild.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Enijidjm.exe

description	pid	process	target process
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe
PID 1180 wrote to memory of 1040	1180	Enijidjm.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\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-1-5-21-2329389628-4064185017-3901522362-1000\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:1180

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
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1040

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1040-62-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1040-68-0x0000000004740000-0x0000000004741000-memory.dmp

Filesize
4KB

Download
memory/1040-67-0x000000007445E000-0x000000007445F000-memory.dmp

Filesize
4KB

Download
memory/1040-66-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1040-65-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1040-64-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1040-63-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1040-61-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1180-57-0x0000000000350000-0x0000000000351000-memory.dmp

Filesize
4KB

Download
memory/1180-60-0x0000000004E70000-0x0000000004EBC000-memory.dmp

Filesize
304KB

Download
memory/1180-59-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

Filesize
256KB

Download
memory/1180-58-0x00000000043C0000-0x0000000004410000-memory.dmp

Filesize
320KB

Download
memory/1180-54-0x000000007445E000-0x000000007445F000-memory.dmp

Filesize
4KB

Download
memory/1180-56-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/1180-55-0x0000000000E90000-0x0000000000EB0000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads