matiex | 18dca52ce50cdf148ca233fb83cd2c3e3c7b39a9ac254c96ac374ae63eb8f44c

General

Target

40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe
Size

703KB
MD5

40b14cd99109b91284625b00a4a8445e
SHA1

c5d15cbc8954e0d69f19aceb6b2a62231bb65636
SHA256

18dca52ce50cdf148ca233fb83cd2c3e3c7b39a9ac254c96ac374ae63eb8f44c
SHA512

6eafa9647c6fcfe9a28708b14f42f01f94e717fe656a46c924527363a6b5287d8876d8e393930557ec19d4b581df4dd38de5a056ec96f36bfb34512dbe327f69
SSDEEP

12288:0w4zjXcPq/JmHLgmG9qrqnABk3CUQPlOVwCGZbvRyaYe85QC0SbHYZjyHFOGExwN:Crzh2//rgrYo5Dlpnks3ExwN

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

Processes:

resource	yara_rule
behavioral2/memory/4024-6-0x0000000000400000-0x0000000000472000-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

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\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.

Processes:

flow ioc

19 freegeoip.app
9 checkip.dyndns.org
18 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe

description pid process target process

PID 1300 set thread context of 4024 1300 40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe RegAsm.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe

pid process

1300 40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 4024 RegAsm.exe

flow	ioc
19	freegeoip.app
9	checkip.dyndns.org
18	freegeoip.app

description	pid	process	target process
PID 1300 set thread context of 4024	1300	40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe	RegAsm.exe

pid	process
1300	40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	4024	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe

description	pid	process	target process
PID 1300 wrote to memory of 4024	1300	40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe	RegAsm.exe
PID 1300 wrote to memory of 4024	1300	40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe	RegAsm.exe
PID 1300 wrote to memory of 4024	1300	40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe	RegAsm.exe
PID 1300 wrote to memory of 4024	1300	40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\40b14cd99109b91284625b00a4a8445e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1300
- 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:4024

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

Loading Replay Monitor...

Downloads

memory/1300-8-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/1300-5-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/1300-2-0x0000000004C80000-0x0000000004D12000-memory.dmp

Filesize
584KB

Download
memory/1300-3-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/1300-0-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

Filesize
4KB

Download
memory/1300-4-0x00000000052C0000-0x000000000533A000-memory.dmp

Filesize
488KB

Download
memory/1300-1-0x00000000001D0000-0x0000000000286000-memory.dmp

Filesize
728KB

Download
memory/4024-9-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4024-6-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4024-11-0x00000000054E0000-0x000000000557C000-memory.dmp

Filesize
624KB

Download
memory/4024-12-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/4024-10-0x00000000059F0000-0x0000000005F94000-memory.dmp

Filesize
5.6MB

Download
memory/4024-13-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download
memory/4024-14-0x0000000006BB0000-0x0000000006D72000-memory.dmp

Filesize
1.8MB

Download
memory/4024-15-0x0000000006A50000-0x0000000006A5A000-memory.dmp

Filesize
40KB

Download
memory/4024-16-0x0000000074D90000-0x0000000075540000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads