matiex | 78b7888884720043c06b8401c39e36c4b07c287bba5b7faa8904ac859c46da22

General

Target

93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe
Size

804KB
MD5

93f5720a9254da4981cc4d1cda042188
SHA1

d8c7aea4fd6bd8cdf29e6f9434108e97b6b474e8
SHA256

78b7888884720043c06b8401c39e36c4b07c287bba5b7faa8904ac859c46da22
SHA512

6270f347eaaa7b7d683785049f0fc188ef7423ad1cf8cff0514128cec9f6c1c3c8c82b4b8eb2abb43e2c7838e1d8ba1c535fcd985ef93370547b030c5ab0159e
SSDEEP

24576:tlWO2agwEklViekhWlc5S7QAvO6rbLyir:tlWjaVEAVi3K7a6rbTr

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/2236-5-0x0000000000400000-0x0000000000472000-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-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\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
4	checkip.dyndns.org
24	freegeoip.app
25	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2664 set thread context of 2236	2664	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe	87

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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2664	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 2236	2664	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe	87
PID 2664 wrote to memory of 2236	2664	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe	87
PID 2664 wrote to memory of 2236	2664	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe	87
PID 2664 wrote to memory of 2236	2664	93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\93f5720a9254da4981cc4d1cda042188_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2664
- 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:2236

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/2236-13-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2236-12-0x0000000005050000-0x00000000050B6000-memory.dmp

Filesize
408KB

Download
memory/2236-16-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2236-15-0x0000000006680000-0x000000000668A000-memory.dmp

Filesize
40KB

Download
memory/2236-14-0x00000000067E0000-0x00000000069A2000-memory.dmp

Filesize
1.8MB

Download
memory/2236-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2236-11-0x0000000004FB0000-0x000000000504C000-memory.dmp

Filesize
624KB

Download
memory/2236-9-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/2236-10-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2664-8-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2664-7-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2664-1-0x00000000003B0000-0x0000000000480000-memory.dmp

Filesize
832KB

Download
memory/2664-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/2664-4-0x00000000052A0000-0x000000000531A000-memory.dmp

Filesize
488KB

Download
memory/2664-3-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/2664-2-0x0000000004E30000-0x0000000004EC2000-memory.dmp

Filesize
584KB

Download

Analysis

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