matiex | 42ff1648e53d0054bc7c4a5c8a5db648c2a3405415d441c7d5801e52f56bf7a7

General

Target

3bcae8c41a076a0803c99fea75f2aa87.exe
Size

1.1MB
MD5

3bcae8c41a076a0803c99fea75f2aa87
SHA1

f2c1b01afcc3a3af6d947b39419bb4531daa8945
SHA256

42ff1648e53d0054bc7c4a5c8a5db648c2a3405415d441c7d5801e52f56bf7a7
SHA512

220880b1422811db1d9cd79030ea8005a7921ecabb580a3ed537d68bb068005f98b14a87e1f90f796d0d506ccd37675c9153a84e2ea0096bc45d55534f5e4113
SSDEEP

24576:5W5oaXpcB7mVSaccPuvcd5OGQT/1/0nS+7n4SYwqK4zf3RTsAHWAgqChJ+hu3A8K:giecrLh0oQRjeGAZ

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.thts.vn
Port:
25
Username:
[email protected]
Password:
123luongngan1989
Email To:
[email protected]

Signatures

Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
stealer keylogger matiex

Matiex Main payload 7 IoCs

resource	yara_rule
behavioral1/memory/2140-10-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2140-12-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2140-18-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2140-20-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2140-16-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2140-23-0x0000000004960000-0x00000000049A0000-memory.dmp	family_matiex
behavioral1/memory/2140-25-0x0000000004960000-0x00000000049A0000-memory.dmp	family_matiex

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe
Key opened	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe
Key opened	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.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.

flow	ioc
2	checkip.dyndns.org
4	freegeoip.app
5	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2480 set thread context of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29

Program crash 1 IoCs

pid	pid_target	Process	procid_target
776	2140	WerFault.exe	29

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	3bcae8c41a076a0803c99fea75f2aa87.exe
Token: SeDebugPrivilege	2140	3bcae8c41a076a0803c99fea75f2aa87.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2480 wrote to memory of 2140	2480	3bcae8c41a076a0803c99fea75f2aa87.exe	29
PID 2140 wrote to memory of 776	2140	3bcae8c41a076a0803c99fea75f2aa87.exe	31
PID 2140 wrote to memory of 776	2140	3bcae8c41a076a0803c99fea75f2aa87.exe	31
PID 2140 wrote to memory of 776	2140	3bcae8c41a076a0803c99fea75f2aa87.exe	31
PID 2140 wrote to memory of 776	2140	3bcae8c41a076a0803c99fea75f2aa87.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2444714103-3190537498-3629098939-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	3bcae8c41a076a0803c99fea75f2aa87.exe

C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe
"C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe
  "C:\Users\Admin\AppData\Local\Temp\3bcae8c41a076a0803c99fea75f2aa87.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2140
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 1676
    3⤵
    - Program crash
    PID:776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2140-16-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2140-18-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2140-10-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2140-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2140-12-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2140-25-0x0000000004960000-0x00000000049A0000-memory.dmp

Filesize
256KB

Download
memory/2140-24-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2140-23-0x0000000004960000-0x00000000049A0000-memory.dmp

Filesize
256KB

Download
memory/2140-8-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2140-9-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2140-22-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2140-20-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2480-4-0x0000000004AF0000-0x0000000004B30000-memory.dmp

Filesize
256KB

Download
memory/2480-3-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2480-1-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2480-0-0x0000000000900000-0x0000000000A1C000-memory.dmp

Filesize
1.1MB

Download
memory/2480-21-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2480-2-0x0000000004AF0000-0x0000000004B30000-memory.dmp

Filesize
256KB

Download
memory/2480-7-0x0000000005CE0000-0x0000000005D58000-memory.dmp

Filesize
480KB

Download
memory/2480-6-0x0000000005010000-0x000000000509E000-memory.dmp

Filesize
568KB

Download
memory/2480-5-0x00000000003B0000-0x00000000003E6000-memory.dmp

Filesize
216KB

Download

Analysis

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