matiex | 8ff7236262c8eb5e12f9dffee8de5b20ccd82d880ac8669ab2f6a88df08c1967

General

Target

7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe
Size

718KB
MD5

7ffeeea388e876404128aa2e71e19f81
SHA1

c383b4ae15e9d55449cb854aa8b55c0a8969e1ab
SHA256

8ff7236262c8eb5e12f9dffee8de5b20ccd82d880ac8669ab2f6a88df08c1967
SHA512

a4cf69f1f40c8d0eda038bb45bffebb4a2e47180ac481465a4dcfe9e086ab23a2f54bb60e91ec8633f1acb0b4570c8e639b586a3cbe3ad7686633f107fa78f91
SSDEEP

12288:XOGP6TwhPZzFyxpWrGfvIG/zbRtmFuv30e53tliuKDW+phzaVA5C+N:XOG8KZzFyRN7bRtjZt8uKDW+phCAZ

Score

10^/10

matiex collection credential_access discovery keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
ebop.website
Port:
587
Username:
[email protected]
Password:
P@ssw0rdP@ssw0rd

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/2500-5-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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-1-5-21-3881032017-2947584075-2120384563-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.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
15	freegeoip.app
16	freegeoip.app
8	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3660 set thread context of 2500	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	89

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe
3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe
3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe
3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	RegAsm.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3660 wrote to memory of 3024	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	86
PID 3660 wrote to memory of 3024	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	86
PID 3660 wrote to memory of 3024	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	86
PID 3660 wrote to memory of 2012	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	87
PID 3660 wrote to memory of 2012	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	87
PID 3660 wrote to memory of 2012	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	87
PID 3660 wrote to memory of 1960	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	88
PID 3660 wrote to memory of 1960	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	88
PID 3660 wrote to memory of 1960	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	88
PID 3660 wrote to memory of 2500	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	89
PID 3660 wrote to memory of 2500	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	89
PID 3660 wrote to memory of 2500	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	89
PID 3660 wrote to memory of 2500	3660	7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3881032017-2947584075-2120384563-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7ffeeea388e876404128aa2e71e19f81_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:3024
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2012
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2500-13-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2500-12-0x0000000005150000-0x00000000051B6000-memory.dmp

Filesize
408KB

Download
memory/2500-16-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2500-15-0x0000000006780000-0x000000000678A000-memory.dmp

Filesize
40KB

Download
memory/2500-9-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/2500-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2500-14-0x00000000068E0000-0x0000000006AA2000-memory.dmp

Filesize
1.8MB

Download
memory/2500-11-0x00000000050B0000-0x000000000514C000-memory.dmp

Filesize
624KB

Download
memory/2500-10-0x00000000055C0000-0x0000000005B64000-memory.dmp

Filesize
5.6MB

Download
memory/3660-4-0x00000000056D0000-0x000000000574A000-memory.dmp

Filesize
488KB

Download
memory/3660-8-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3660-7-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3660-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

Filesize
4KB

Download
memory/3660-1-0x00000000006D0000-0x000000000078A000-memory.dmp

Filesize
744KB

Download
memory/3660-3-0x00000000752C0000-0x0000000075A70000-memory.dmp

Filesize
7.7MB

Download
memory/3660-2-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download

Analysis

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