matiex | 94ed91d33fa5a14f97c31acc659d4600b695920f7df7e79e2a86caf6da8026ff

General

Target

b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe
Size

704KB
MD5

b02da448441f440e3da47ffe337386a1
SHA1

1a3d5602c8ae752f397ef2bcaf39376338b3ab5f
SHA256

94ed91d33fa5a14f97c31acc659d4600b695920f7df7e79e2a86caf6da8026ff
SHA512

a1df55ada44b08c0b5314880bfea6bd92f82fae65215183b896d419d8ff6c01d11ff5378e500bdd8478adb8bae33175c386e89028e8cf009046858d06919f90f
SSDEEP

12288:4kqPib7Z0NrHVN27x4JxFVt1DE86pLW7pEj71Wjz3rVMNrEZcpYN:4Ta3Z0RYgFRlEdIrVQrEZcpYN

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/4884-5-0x0000000000400000-0x0000000000472000-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-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\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
16	checkip.dyndns.org
19	freegeoip.app
20	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2508 set thread context of 4884	2508	b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe	92

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2508	b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4884	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 4884	2508	b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe	92
PID 2508 wrote to memory of 4884	2508	b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe	92
PID 2508 wrote to memory of 4884	2508	b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe	92
PID 2508 wrote to memory of 4884	2508	b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b02da448441f440e3da47ffe337386a1_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2508
- 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:4884

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1304,i,5229431749694857451,16836185654682871752,262144 --variations-seed-version --mojo-platform-channel-handle=3860 /prefetch:8
1⤵
PID:4672

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/2508-8-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/2508-1-0x00000000005B0000-0x0000000000666000-memory.dmp

Filesize
728KB

Download
memory/2508-2-0x0000000004FB0000-0x0000000005042000-memory.dmp

Filesize
584KB

Download
memory/2508-3-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/2508-4-0x0000000005460000-0x00000000054DA000-memory.dmp

Filesize
488KB

Download
memory/2508-0-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

Filesize
4KB

Download
memory/2508-7-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4884-9-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4884-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4884-10-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/4884-11-0x0000000004FF0000-0x000000000508C000-memory.dmp

Filesize
624KB

Download
memory/4884-12-0x0000000005090000-0x00000000050F6000-memory.dmp

Filesize
408KB

Download
memory/4884-13-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download
memory/4884-14-0x0000000006550000-0x0000000006712000-memory.dmp

Filesize
1.8MB

Download
memory/4884-15-0x0000000006400000-0x000000000640A000-memory.dmp

Filesize
40KB

Download
memory/4884-16-0x0000000074D70000-0x0000000075520000-memory.dmp

Filesize
7.7MB

Download

Analysis

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