matiex | dcc9ebbfe48ee7e19ca98d1a6f8232c17cb35618bcb654e32bcffda87166c22b

General

Target

36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe
Size

727KB
MD5

36e2aeb30102a06a4f2604140e273afc
SHA1

e0af9024e33c8ce73624a4aa1dcf49cb2f49b2fd
SHA256

dcc9ebbfe48ee7e19ca98d1a6f8232c17cb35618bcb654e32bcffda87166c22b
SHA512

61df3c81e305e7f49bc2682ae874dc160ea302ee311f8955a5b2e939198fbe976b431b104021c37b5dfe994d390193c7de8215de2803a5f66a3b7ea2f2b6abb4
SSDEEP

12288:Z9ZQhqP8e9sJEtbDgT4/stKVXFOBTJqv71AebFsV0NZtj8nAUXh5K:Z9ShqPFUestKVVITJMhnbFsVor6X

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
Email To:
[email protected]

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/2688-5-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2688-7-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/2688-9-0x0000000000400000-0x0000000000472000-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-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\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
8	freegeoip.app
9	freegeoip.app
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2692 set thread context of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31

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	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe
2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2080	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	30
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31
PID 2692 wrote to memory of 2688	2692	36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\36e2aeb30102a06a4f2604140e273afc_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2080
- 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:2688

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

Loading Replay Monitor...

Downloads

memory/2688-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2688-7-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2688-9-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/2692-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/2692-1-0x0000000001340000-0x00000000013FC000-memory.dmp

Filesize
752KB

Download
memory/2692-2-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2692-3-0x0000000004D40000-0x0000000004DB8000-memory.dmp

Filesize
480KB

Download
memory/2692-4-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2692-10-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing