matiex | af326a34efc85541f5da41eba908c3fb6532c61d0b75038fa0d7350db1490d12

General

Target

TEMPLATE.exe
Size

487KB
MD5

a4b9cb78deefd62d30d2f21e65fe8c7a
SHA1

55820f96071437f08f6ea4e656a0497e71292916
SHA256

99b2d9e790cfb597b01a934bcf113cd6675f4a5ef260da57ef2a86d68ecbc1b2
SHA512

770d4dd21e674ac88922b42fc2d5e5eda4fb4c58cb9daf04f8396932505da5ddf05c67719d326f01cb244349b244fd896cc2142c01fdf6aecc71bf87ded76da0

Score

10^/10

matiex evasion keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
smtp.privateemail.com
Port:
587
Username:
sales02@seedwellresources.xyz
Password:
coronavirus2020
Email To:
sales01@seedwellresources.xyz

Signatures

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

Matiex Main Payload 6 IoCs

Processes:

resource	yara_rule
behavioral7/memory/1472-64-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral7/memory/1472-65-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral7/memory/1472-67-0x000000000046B40E-mapping.dmp	family_matiex
behavioral7/memory/1472-66-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral7/memory/1472-69-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral7/memory/1472-71-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

TEMPLATE.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	TEMPLATE.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	TEMPLATE.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.

Processes:

flow ioc

4 checkip.dyndns.org
8 freegeoip.app
9 freegeoip.app

flow	ioc
4	checkip.dyndns.org
8	freegeoip.app
9	freegeoip.app

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

TEMPLATE.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	TEMPLATE.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	TEMPLATE.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

TEMPLATE.exe

description pid process target process

PID 1424 set thread context of 1472 1424 TEMPLATE.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1008 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

TEMPLATE.exe

pid process

1424 TEMPLATE.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TEMPLATE.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1424 TEMPLATE.exe
Token: SeDebugPrivilege 1472 MSBuild.exe

description	pid	process	target process
PID 1424 set thread context of 1472	1424	TEMPLATE.exe	MSBuild.exe

pid	process
1008	schtasks.exe

pid	process
1424	TEMPLATE.exe

description	pid	process
Token: SeDebugPrivilege	1424	TEMPLATE.exe
Token: SeDebugPrivilege	1472	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

TEMPLATE.exe

description	pid	process	target process
PID 1424 wrote to memory of 1008	1424	TEMPLATE.exe	schtasks.exe
PID 1424 wrote to memory of 1008	1424	TEMPLATE.exe	schtasks.exe
PID 1424 wrote to memory of 1008	1424	TEMPLATE.exe	schtasks.exe
PID 1424 wrote to memory of 1008	1424	TEMPLATE.exe	schtasks.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe
PID 1424 wrote to memory of 1472	1424	TEMPLATE.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\TEMPLATE.exe
"C:\Users\Admin\AppData\Local\Temp\TEMPLATE.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1424

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ABxVOQj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCA23.tmp"
2⤵
- Creates scheduled task(s)
PID:1008

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCA23.tmp
Filesize
1KB

MD5
92dd464daff9299249dde588d280ca7e

SHA1
49ddf87f7b602d51b9ad7c16947a5c53506ac959

SHA256
27e9afa702a4964611d69349b7b01ca4de1037cc206a8764082cf6edfd9bdd4f

SHA512
273cf48deb9e9563875905695541564fe37b10efc4d29b287fad6f670ab2c29fb0160aeb46140a20055cba6f41421fce7ea822ff3e9f317c900287766e9005fc

Download Submit
memory/1008-59-0x0000000000000000-mapping.dmp

Download
memory/1424-57-0x0000000000370000-0x0000000000380000-memory.dmp

Filesize
64KB

Download
memory/1424-54-0x0000000000B30000-0x0000000000BB2000-memory.dmp

Filesize
520KB

Download
memory/1424-58-0x00000000053A0000-0x0000000005418000-memory.dmp

Filesize
480KB

Download
memory/1424-56-0x0000000004600000-0x0000000004664000-memory.dmp

Filesize
400KB

Download
memory/1424-55-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1472-61-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1472-62-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1472-64-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1472-65-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1472-67-0x000000000046B40E-mapping.dmp

Download
memory/1472-66-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1472-69-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/1472-71-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads