matiex | ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba

General

Target

ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe
Size

764KB
MD5

c1f0d6a6b9e1f4af3103c6814866292a
SHA1

3793096dc698b31e8ec42b6d1734212a48db6852
SHA256

ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba
SHA512

17c93689a1b2fe6df0711209e9c62d5e0e3bebe5d5af72ab04b0d36edfc4cf3031e296fd17dd9bbd5e7affcc4dcf990f38e0f9ec59d2606d3acc53df5732ecca

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.avicorrpinc.com
Port:
587
Username:
[email protected]
Password:
admin@abc123
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/4256-137-0x0000000000400000-0x0000000000474000-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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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

58 checkip.dyndns.org
66 freegeoip.app
67 freegeoip.app

flow	ioc
58	checkip.dyndns.org
66	freegeoip.app
67	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

Processes:

ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe

description	pid	process	target process
PID 4992 set thread context of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe

pid	process
4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe
4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe
4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exeMSBuild.exe

description	pid	process
Token: SeDebugPrivilege	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe
Token: SeDebugPrivilege	4256	MSBuild.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe

description	pid	process	target process
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe
PID 4992 wrote to memory of 4256	4992	ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe
"C:\Users\Admin\AppData\Local\Temp\ee3a65a55a8a5401508bbb1c768afe90c92f42abb4181f17a32cfebaeb9408ba.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4992

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4256

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/4256-136-0x0000000000000000-mapping.dmp

Download
memory/4256-137-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/4256-138-0x0000000005840000-0x00000000058A6000-memory.dmp

Filesize
408KB

Download
memory/4256-139-0x0000000006E50000-0x0000000007012000-memory.dmp

Filesize
1.8MB

Download
memory/4992-131-0x0000000000BB0000-0x0000000000C76000-memory.dmp

Filesize
792KB

Download
memory/4992-132-0x0000000005CE0000-0x0000000006284000-memory.dmp

Filesize
5.6MB

Download
memory/4992-133-0x0000000005650000-0x00000000056E2000-memory.dmp

Filesize
584KB

Download
memory/4992-134-0x0000000005630000-0x000000000563A000-memory.dmp

Filesize
40KB

Download
memory/4992-135-0x0000000007C10000-0x0000000007CAC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads