matiex | 69bae63d802887e2d994022011465c7f0bc42b1f0adefcee8dcbbfe243118b15

General

Target

40987654323456789098746789098765432345678.exe
Size

464KB
MD5

b9a4dbf6bb05c4fe97ba541dcf555e70
SHA1

0de7dc340d03d0144aef6692762c482e731f1717
SHA256

69bae63d802887e2d994022011465c7f0bc42b1f0adefcee8dcbbfe243118b15
SHA512

d9682bf0d38feb0dacc75826928734bf7165e39e44d450392d50f6a6aedf5bf1adf13f9a8556007243299f0c6cae5646df8c6a2de6db5c1ebb759ec79c6b6cee

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Signatures

Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
stealer keylogger matiex

Matiex Main Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1208-118-0x0000000000400000-0x0000000000482000-memory.dmp	family_matiex
behavioral2/memory/1208-119-0x0000000000400000-0x0000000000482000-memory.dmp	family_matiex
behavioral2/memory/1208-121-0x0000000004950000-0x00000000049C2000-memory.dmp	family_matiex

Loads dropped DLL 1 IoCs

Processes:

40987654323456789098746789098765432345678.exe

pid process

2828 40987654323456789098746789098765432345678.exe
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
T1081
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
T1081

pid	process
2828	40987654323456789098746789098765432345678.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

40987654323456789098746789098765432345678.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	40987654323456789098746789098765432345678.exe
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	40987654323456789098746789098765432345678.exe
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	40987654323456789098746789098765432345678.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

9 checkip.dyndns.org

flow	ioc
9	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

40987654323456789098746789098765432345678.exe

description	pid	process	target process
PID 2828 set thread context of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1628 1208 WerFault.exe 40987654323456789098746789098765432345678.exe

pid	pid_target	process	target process
1628	1208	WerFault.exe	40987654323456789098746789098765432345678.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

WerFault.exe

pid	process
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe
1628	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

40987654323456789098746789098765432345678.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	1208	40987654323456789098746789098765432345678.exe
Token: SeRestorePrivilege	1628	WerFault.exe
Token: SeBackupPrivilege	1628	WerFault.exe
Token: SeDebugPrivilege	1628	WerFault.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

40987654323456789098746789098765432345678.exe

description	pid	process	target process
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe
PID 2828 wrote to memory of 1208	2828	40987654323456789098746789098765432345678.exe	40987654323456789098746789098765432345678.exe

outlook_office_path 1 IoCs

Processes:

40987654323456789098746789098765432345678.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	40987654323456789098746789098765432345678.exe

outlook_win_path 1 IoCs

Processes:

40987654323456789098746789098765432345678.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	40987654323456789098746789098765432345678.exe

C:\Users\Admin\AppData\Local\Temp\40987654323456789098746789098765432345678.exe
"C:\Users\Admin\AppData\Local\Temp\40987654323456789098746789098765432345678.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2828

C:\Users\Admin\AppData\Local\Temp\40987654323456789098746789098765432345678.exe
"C:\Users\Admin\AppData\Local\Temp\40987654323456789098746789098765432345678.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 1600
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsq5CA.tmp\acznqbhdm.dll

MD5
b520b52bb5db616d8768ad5cdb83e86d

SHA1
b7e44b9c5d77059d33a84378c7cdc4c47140d56e

SHA256
6c0bc5ebbe6cda42b607e181d902c4b4ac74a72a4915971e72b4b4335fbd92a2

SHA512
767efc549e3b48b850e6a82fb005a793d3d0f556b94e4d2b79ef7eda5ad4144245758c89f809914d264a99ad75137d14a0f43d3cb2a665d095dc83f026c9576c

Download Submit
memory/1208-122-0x0000000004AE0000-0x0000000004B7C000-memory.dmp

Filesize
624KB

Download
memory/1208-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1208-119-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1208-120-0x0000000004A60000-0x0000000004A61000-memory.dmp

Filesize
4KB

Download
memory/1208-121-0x0000000004950000-0x00000000049C2000-memory.dmp

Filesize
456KB

Download
memory/1208-123-0x0000000004B80000-0x000000000507E000-memory.dmp

Filesize
5.0MB

Download
memory/1208-125-0x0000000004A63000-0x0000000004A64000-memory.dmp

Filesize
4KB

Download
memory/1208-124-0x0000000004A62000-0x0000000004A63000-memory.dmp

Filesize
4KB

Download
memory/1208-126-0x00000000050C0000-0x0000000005126000-memory.dmp

Filesize
408KB

Download
memory/1208-127-0x0000000004A40000-0x0000000004A65000-memory.dmp

Filesize
148KB

Download
memory/1208-128-0x0000000005C90000-0x0000000005E52000-memory.dmp

Filesize
1.8MB

Download
memory/2828-117-0x00000000023A0000-0x00000000023C3000-memory.dmp

Filesize
140KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads