matiex | 8b899e8cbf23c5463bf7aaadf1b161298b96c260a7f87b3376142424237fcae3

General

Target

gsxp5mkd0ACsDub.exe
Size

949KB
MD5

ac9577cdc33e7cf5cd3193d9a02b5ee6
SHA1

3ca264ffe003d0a1c3b196169ed5cf672b3b1794
SHA256

e1f6a0b698c957d92bc86fdaf9add81405fc26c716f691fb34148485a93de97c
SHA512

0f9b55ff971e618a53f2366f2a2dc7236ef513dffd561e0e0eb97c3166a738ae754ad9ea83e9d8803639c91f8bc8b90a843ca1a6fb854c7b8b978e88edb3e54a

Score

10^/10

matiex collection evasion keylogger spyware stealer

Malware Config

Extracted

Family

matiex

C2

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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1112-61-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1112-62-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1112-63-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1112-64-0x000000000047014E-mapping.dmp	family_matiex
behavioral1/memory/1112-66-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex
behavioral1/memory/1112-68-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex

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

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	gsxp5mkd0ACsDub.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	gsxp5mkd0ACsDub.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

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gsxp5mkd0ACsDub.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gsxp5mkd0ACsDub.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gsxp5mkd0ACsDub.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.

Processes:

flow ioc

4 checkip.dyndns.org

flow	ioc
4	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

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	gsxp5mkd0ACsDub.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	gsxp5mkd0ACsDub.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

gsxp5mkd0ACsDub.exe

description pid process target process

PID 2008 set thread context of 1112 2008 gsxp5mkd0ACsDub.exe gsxp5mkd0ACsDub.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1748 1112 WerFault.exe gsxp5mkd0ACsDub.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

gsxp5mkd0ACsDub.exe

pid process

2008 gsxp5mkd0ACsDub.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

gsxp5mkd0ACsDub.exegsxp5mkd0ACsDub.exe

description pid process

Token: SeDebugPrivilege 2008 gsxp5mkd0ACsDub.exe
Token: SeDebugPrivilege 1112 gsxp5mkd0ACsDub.exe

description	pid	process	target process
PID 2008 set thread context of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe

pid	pid_target	process	target process
1748	1112	WerFault.exe	gsxp5mkd0ACsDub.exe

pid	process
2008	gsxp5mkd0ACsDub.exe

description	pid	process
Token: SeDebugPrivilege	2008	gsxp5mkd0ACsDub.exe
Token: SeDebugPrivilege	1112	gsxp5mkd0ACsDub.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

gsxp5mkd0ACsDub.exegsxp5mkd0ACsDub.exe

description	pid	process	target process
PID 2008 wrote to memory of 584	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 584	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 584	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 584	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2008 wrote to memory of 1112	2008	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 1112 wrote to memory of 1748	1112	gsxp5mkd0ACsDub.exe	WerFault.exe
PID 1112 wrote to memory of 1748	1112	gsxp5mkd0ACsDub.exe	WerFault.exe
PID 1112 wrote to memory of 1748	1112	gsxp5mkd0ACsDub.exe	WerFault.exe
PID 1112 wrote to memory of 1748	1112	gsxp5mkd0ACsDub.exe	WerFault.exe

outlook_office_path 1 IoCs

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gsxp5mkd0ACsDub.exe

outlook_win_path 1 IoCs

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gsxp5mkd0ACsDub.exe

C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe
"C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe
  "{path}"
  2⤵
  PID:584
- C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1112
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1112 -s 1312
    3⤵
    - Program crash
    PID:1748

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/1112-64-0x000000000047014E-mapping.dmp

Download
memory/1112-58-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1112-59-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1112-61-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1112-62-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1112-63-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1112-66-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1112-68-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/1748-70-0x0000000000000000-mapping.dmp

Download
memory/2008-55-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/2008-56-0x00000000004F0000-0x000000000050E000-memory.dmp

Filesize
120KB

Download
memory/2008-57-0x0000000004B90000-0x0000000004C32000-memory.dmp

Filesize
648KB

Download
memory/2008-54-0x0000000001350000-0x0000000001444000-memory.dmp

Filesize
976KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads