matiex | 892ac1aad60783b04a388d8cc154f605d9b7b8e3f3f1a7d207072f58f5389c42

General

Target

fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe
Size

726KB
MD5

fdbab159997e6af6bf0776c48e62c51d
SHA1

4cccfc9467fff9e5fda5ef41bebaef609b1ce889
SHA256

892ac1aad60783b04a388d8cc154f605d9b7b8e3f3f1a7d207072f58f5389c42
SHA512

fee3fb49d5885db08f0b32a551eaaeced72254f736a58e88ba3078a95184957f82036858b222993e1bc121b1733c032e98fb5f690ce02f277ce4c35bd3aaca0c
SSDEEP

12288:q4EqDqf5/HQpEVzAdFFtr8N9ZrydvSgmryVvtF7ye0BMD2Ya/eD+Df:qBq+1x6Frr8N9ZetPLBye0Bk2Yavf

Score

10^/10

matiex collection 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 1 IoCs

resource	yara_rule
behavioral2/memory/4976-5-0x0000000000400000-0x0000000000472000-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 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\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
36	freegeoip.app
19	checkip.dyndns.org
35	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4328 set thread context of 4976	4328	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe	89

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	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4328	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4976	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4328 wrote to memory of 4976	4328	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe	89
PID 4328 wrote to memory of 4976	4328	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe	89
PID 4328 wrote to memory of 4976	4328	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe	89
PID 4328 wrote to memory of 4976	4328	fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fdbab159997e6af6bf0776c48e62c51d_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4328
- 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:4976

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=4152,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4180 /prefetch:8
1⤵
PID:2324

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/4328-8-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4328-7-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4328-2-0x0000000004C20000-0x0000000004CB2000-memory.dmp

Filesize
584KB

Download
memory/4328-3-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4328-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/4328-4-0x00000000050A0000-0x0000000005118000-memory.dmp

Filesize
480KB

Download
memory/4328-1-0x0000000000370000-0x000000000042C000-memory.dmp

Filesize
752KB

Download
memory/4976-9-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4976-5-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/4976-10-0x0000000005B90000-0x0000000006134000-memory.dmp

Filesize
5.6MB

Download
memory/4976-11-0x0000000005530000-0x00000000055CC000-memory.dmp

Filesize
624KB

Download
memory/4976-12-0x00000000055E0000-0x0000000005646000-memory.dmp

Filesize
408KB

Download
memory/4976-13-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4976-14-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4976-15-0x0000000006C30000-0x0000000006DF2000-memory.dmp

Filesize
1.8MB

Download
memory/4976-16-0x0000000006AD0000-0x0000000006ADA000-memory.dmp

Filesize
40KB

Download

Analysis

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