matiex | a68f82eeab67310e50631899bb57fdac1e81c6b2d04db87c8aa564ff2cc18748

General

Target

826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe
Size

703KB
MD5

826690f8e44578c940cf6b2bc6aa745a
SHA1

d640ba3276d1998385e6f7237c6c43b779553e26
SHA256

a68f82eeab67310e50631899bb57fdac1e81c6b2d04db87c8aa564ff2cc18748
SHA512

6f07b6f0b24735b7c83f739c3c81f3bb351da1dc3f21bd1a5247c2a71b8c7dabb65c027f5d61071c8a8e093aa62109ef00917851e761fe2c211c0745702f40a5
SSDEEP

12288:ZP0FsHBSlKz7E1jl8Y/fOjNkoQknKKVCJ22zKMzFfVJ/n8DtFSfWwwjj74JN:MKz72jlX3GTQxz22e48reW/cJN

Score

10^/10

matiex collection 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/372-5-0x0000000000400000-0x0000000000472000-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-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\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
6	checkip.dyndns.org
19	freegeoip.app
20	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1464 set thread context of 372	1464	826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe	85

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1464	826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	372	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 372	1464	826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe	85
PID 1464 wrote to memory of 372	1464	826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe	85
PID 1464 wrote to memory of 372	1464	826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe	85
PID 1464 wrote to memory of 372	1464	826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe	85

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\826690f8e44578c940cf6b2bc6aa745a_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1464
- 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
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:372

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/372-11-0x0000000005510000-0x0000000005576000-memory.dmp

Filesize
408KB

Download
memory/372-15-0x0000000074C10000-0x00000000753C0000-memory.dmp

Filesize
7.7MB

Download
memory/372-14-0x00000000069F0000-0x00000000069FA000-memory.dmp

Filesize
40KB

Download
memory/372-13-0x0000000006B50000-0x0000000006D12000-memory.dmp

Filesize
1.8MB

Download
memory/372-12-0x0000000074C10000-0x00000000753C0000-memory.dmp

Filesize
7.7MB

Download
memory/372-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/372-8-0x0000000005980000-0x0000000005F24000-memory.dmp

Filesize
5.6MB

Download
memory/372-10-0x0000000005470000-0x000000000550C000-memory.dmp

Filesize
624KB

Download
memory/372-9-0x0000000074C10000-0x00000000753C0000-memory.dmp

Filesize
7.7MB

Download
memory/1464-3-0x0000000074C10000-0x00000000753C0000-memory.dmp

Filesize
7.7MB

Download
memory/1464-7-0x0000000074C10000-0x00000000753C0000-memory.dmp

Filesize
7.7MB

Download
memory/1464-4-0x0000000005C40000-0x0000000005CBA000-memory.dmp

Filesize
488KB

Download
memory/1464-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

Filesize
4KB

Download
memory/1464-2-0x0000000005810000-0x00000000058A2000-memory.dmp

Filesize
584KB

Download
memory/1464-1-0x0000000000DF0000-0x0000000000EA6000-memory.dmp

Filesize
728KB

Download

Analysis

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