matiex | ec45a354ba2c7cba3c064325f968d62cdb3999122b76080dd145cc49f13bf7e7

Analysis

max time kernel
154s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11-01-2024 23:19

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General

Target

54dc35ab78394f31963d2f0bd30a6b7b.exe
Size

656KB
MD5

54dc35ab78394f31963d2f0bd30a6b7b
SHA1

4904138a54baf5cb440933e502ff6e8cb6b00829
SHA256

ec45a354ba2c7cba3c064325f968d62cdb3999122b76080dd145cc49f13bf7e7
SHA512

c54d2abf270dd31eb9e3bf44762803f3d1e4d41a6ea43fd37003a64983fddbac5545a5dafe15b3224aadb7f25037c8dc8818480210a30ef6ed69fef326895d7b
SSDEEP

12288:lrf0P3HD5Y2fxOZAcLlQuhntyyFgF1/OV0b4R7wZSEleGxCRfdbBKqS/XWsHFsdn:2P3H1Y2f4HLVnILvOV0b4R7ASEleGmft

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

https://api.telegram.org/bot1395392888:AAFrJovDdZICOFB0gX0eGWrAUzEKCRpv8xo/sendMessage?chat_id=1300181783

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/4432-2-0x0000000000400000-0x0000000000476000-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-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\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

35 checkip.dyndns.org
42 freegeoip.app
43 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

54dc35ab78394f31963d2f0bd30a6b7b.exe

description pid process target process

PID 4316 set thread context of 4432 4316 54dc35ab78394f31963d2f0bd30a6b7b.exe MSBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3316 4432 WerFault.exe MSBuild.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

54dc35ab78394f31963d2f0bd30a6b7b.exe

pid process

4316 54dc35ab78394f31963d2f0bd30a6b7b.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 4432 MSBuild.exe

flow	ioc
35	checkip.dyndns.org
42	freegeoip.app
43	freegeoip.app

description	pid	process	target process
PID 4316 set thread context of 4432	4316	54dc35ab78394f31963d2f0bd30a6b7b.exe	MSBuild.exe

pid	pid_target	process	target process
3316	4432	WerFault.exe	MSBuild.exe

pid	process
4316	54dc35ab78394f31963d2f0bd30a6b7b.exe

description	pid	process
Token: SeDebugPrivilege	4432	MSBuild.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

54dc35ab78394f31963d2f0bd30a6b7b.exe

description	pid	process	target process
PID 4316 wrote to memory of 4432	4316	54dc35ab78394f31963d2f0bd30a6b7b.exe	MSBuild.exe
PID 4316 wrote to memory of 4432	4316	54dc35ab78394f31963d2f0bd30a6b7b.exe	MSBuild.exe
PID 4316 wrote to memory of 4432	4316	54dc35ab78394f31963d2f0bd30a6b7b.exe	MSBuild.exe
PID 4316 wrote to memory of 4432	4316	54dc35ab78394f31963d2f0bd30a6b7b.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\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-1-5-21-3073191680-435865314-2862784915-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\54dc35ab78394f31963d2f0bd30a6b7b.exe
"C:\Users\Admin\AppData\Local\Temp\54dc35ab78394f31963d2f0bd30a6b7b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4316

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\54dc35ab78394f31963d2f0bd30a6b7b.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4432 -s 2600
3⤵
- Program crash
PID:3316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4432 -ip 4432
1⤵
PID:3548

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/4316-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4316-1-0x00000000006D0000-0x00000000006D2000-memory.dmp

Filesize
8KB

Download
memory/4316-3-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4432-2-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/4432-4-0x00000000746B0000-0x0000000074E60000-memory.dmp

Filesize
7.7MB

Download
memory/4432-5-0x0000000004F90000-0x000000000502C000-memory.dmp

Filesize
624KB

Download
memory/4432-6-0x0000000005040000-0x00000000050A6000-memory.dmp

Filesize
408KB

Download
memory/4432-7-0x0000000005220000-0x0000000005230000-memory.dmp

Filesize
64KB

Download
memory/4432-8-0x00000000065B0000-0x0000000006B54000-memory.dmp

Filesize
5.6MB

Download
memory/4432-9-0x00000000746B0000-0x0000000074E60000-memory.dmp

Filesize
7.7MB

Download
memory/4432-10-0x0000000005220000-0x0000000005230000-memory.dmp

Filesize
64KB

Download
memory/4432-11-0x00000000746B0000-0x0000000074E60000-memory.dmp

Filesize
7.7MB

Download