matiex | a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26

General

Target

a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
Size

569KB
MD5

a4cefbd7724d9941c429a57493ded1c1
SHA1

e24ec79da04b1b8edcb7c26f5e2bb041e2aff400
SHA256

a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26
SHA512

bdddd0a1716eb32ed6d055c4e506770c34cb1d0532197a2cfd3278e140da39bb18616eb800e4065409f1aea19bc8677382840edfe2b8ac56466401d10382d8f1

Score

10^/10

matiex metastealer collection evasion keylogger spyware stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/[email protected]/sendMessage?chat_id=dakar@20

Signatures

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

Matiex Main Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4776-138-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex

Meta Stealer Stealer
Meta Stealer steals passwords stored in browsers, written in C++.
stealer metastealer
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
30	checkip.dyndns.org

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1684 set thread context of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4040	4776	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91
PID 1684 wrote to memory of 4776	1684	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe

C:\Users\Admin\AppData\Local\Temp\a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
"C:\Users\Admin\AppData\Local\Temp\a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\a00b538eec95df8ee432d6a97aa485caaae707b47dec573d8f6943b4eaef0b26.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4776
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4776 -s 1728
    3⤵
    - Program crash
    PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4776 -ip 4776
1⤵
PID:228

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

2

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1684-130-0x0000000000FB0000-0x0000000001044000-memory.dmp

Filesize
592KB

Download
memory/1684-131-0x00000000060D0000-0x0000000006674000-memory.dmp

Filesize
5.6MB

Download
memory/1684-132-0x0000000005A10000-0x0000000005AA2000-memory.dmp

Filesize
584KB

Download
memory/1684-133-0x00000000059F0000-0x00000000059FA000-memory.dmp

Filesize
40KB

Download
memory/1684-134-0x00000000096A0000-0x0000000009BCC000-memory.dmp

Filesize
5.2MB

Download
memory/1684-135-0x0000000009FA0000-0x000000000A03C000-memory.dmp

Filesize
624KB

Download
memory/1684-136-0x000000000A040000-0x000000000A0A6000-memory.dmp

Filesize
408KB

Download
memory/4776-138-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads