matiex | 1f06fb381d2055adeb17feb116186867f330e113f24ecff48ccc2c5b702147f5

General

Target

61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe
Size

695KB
MD5

61e8144770a3dc3131d70ca446027587
SHA1

c99aaea2aadf8d987c39072b6bba336d6fcdb63e
SHA256

1f06fb381d2055adeb17feb116186867f330e113f24ecff48ccc2c5b702147f5
SHA512

e2d5476873b5678ebab494078cdd6c64f7f5ef21751e106249f5a1c12f77de3f218f44c44ebd7035f09f11597a36b73f93573235e187aff5b792b3462548cfe4
SSDEEP

12288:cfet/a0Yojb641UlLB3F7hxT+zqHWDPsxrWfEF7gUNnb/VIBxWWkc:cfga0Yojb6tLF7hF+zqHWDPsxiEJgUN+

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 3 IoCs

resource	yara_rule
behavioral1/memory/2948-4-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2948-8-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2948-7-0x0000000000400000-0x0000000000472000-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-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\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
8	freegeoip.app
9	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1732 set thread context of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30

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	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2948	1732	61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\61e8144770a3dc3131d70ca446027587_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1732
- 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:2948

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/1732-0-0x0000000074D9E000-0x0000000074D9F000-memory.dmp

Filesize
4KB

Download
memory/1732-1-0x0000000000E10000-0x0000000000EC4000-memory.dmp

Filesize
720KB

Download
memory/1732-2-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/1732-3-0x0000000004AE0000-0x0000000004B5A000-memory.dmp

Filesize
488KB

Download
memory/1732-9-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/1732-10-0x0000000074D90000-0x000000007547E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-4-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2948-8-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2948-7-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download

Analysis

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