matiex | 597c71c6a2012cf5ccd4a5e8b97be637add1d690283331c709f4c8fee94dd280

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-01-2024 05:18

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General

Target

819096acf63b5d611a3009c559049e27.exe
Size

479KB
MD5

819096acf63b5d611a3009c559049e27
SHA1

11aab366797c1d758b288002fcf79e38d7401dcb
SHA256

597c71c6a2012cf5ccd4a5e8b97be637add1d690283331c709f4c8fee94dd280
SHA512

5e2d50c87791d4a05144c2bcdd91f28b2ae464dbf6f23d3d1c04c255312b1b9c685619023c202d96cf7c0e8d432041ab365d4337b45dc6568a0a54dd1ab93b86
SSDEEP

6144:QZAFjCBUSf/f45NBQvOdS7965mgZBr7jbFSfMfqhWu4iW4ElEjyWBYa:IEOBWUvO4p6Q+J7vF+MQWT181

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

https://api.telegram.org/bot1769987238:AAEQYijlXWT1FDvBzphYZ0NJ0B8IOgYjki0/sendMessage?chat_id=1816626867

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/5028-3-0x0000000000400000-0x0000000000476000-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-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\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

14 checkip.dyndns.org
16 freegeoip.app
17 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

819096acf63b5d611a3009c559049e27.exe

description pid process target process

PID 4864 set thread context of 5028 4864 819096acf63b5d611a3009c559049e27.exe MSBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4568 5028 WerFault.exe MSBuild.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

819096acf63b5d611a3009c559049e27.exe

pid process

4864 819096acf63b5d611a3009c559049e27.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 5028 MSBuild.exe

flow	ioc
14	checkip.dyndns.org
16	freegeoip.app
17	freegeoip.app

description	pid	process	target process
PID 4864 set thread context of 5028	4864	819096acf63b5d611a3009c559049e27.exe	MSBuild.exe

pid	pid_target	process	target process
4568	5028	WerFault.exe	MSBuild.exe

pid	process
4864	819096acf63b5d611a3009c559049e27.exe

description	pid	process
Token: SeDebugPrivilege	5028	MSBuild.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

819096acf63b5d611a3009c559049e27.exe

description	pid	process	target process
PID 4864 wrote to memory of 5028	4864	819096acf63b5d611a3009c559049e27.exe	MSBuild.exe
PID 4864 wrote to memory of 5028	4864	819096acf63b5d611a3009c559049e27.exe	MSBuild.exe
PID 4864 wrote to memory of 5028	4864	819096acf63b5d611a3009c559049e27.exe	MSBuild.exe
PID 4864 wrote to memory of 5028	4864	819096acf63b5d611a3009c559049e27.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\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-1-5-21-1815711207-1844170477-3539718864-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\819096acf63b5d611a3009c559049e27.exe
"C:\Users\Admin\AppData\Local\Temp\819096acf63b5d611a3009c559049e27.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4864

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Users\Admin\AppData\Local\Temp\819096acf63b5d611a3009c559049e27.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:5028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 2008
3⤵
- Program crash
PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5028 -ip 5028
1⤵
PID:2648

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/4864-1-0x0000000000440000-0x0000000000540000-memory.dmp

Filesize
1024KB

Download
memory/4864-2-0x0000000000980000-0x0000000000984000-memory.dmp

Filesize
16KB

Download
memory/5028-3-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/5028-4-0x0000000074D30000-0x00000000754E0000-memory.dmp

Filesize
7.7MB

Download
memory/5028-5-0x0000000005470000-0x000000000550C000-memory.dmp

Filesize
624KB

Download
memory/5028-6-0x0000000005AC0000-0x0000000006064000-memory.dmp

Filesize
5.6MB

Download
memory/5028-7-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/5028-8-0x0000000005450000-0x0000000005460000-memory.dmp

Filesize
64KB

Download
memory/5028-9-0x0000000074D30000-0x00000000754E0000-memory.dmp

Filesize
7.7MB

Download