matiex | cd8d944df4259af50a3fa6a148cf922ac579e2bc379ca85d554d33dbe62642f3

General

Target

Purchase Order.pdf.exe
Size

361KB
MD5

206f4433e9871eb640d993237c23933e
SHA1

c915f546298de42e3f5b7c1eb674dc4d0425df04
SHA256

074c065bacbb7880ce7f0d4d2ef0794398bf9152beb9a59d6d7f096b6e94e44d
SHA512

49f0cb6eac3be11aea716f7038e31626804734e41cf0ef5cd62e52af6297eba4046501cf01c42f97b2d247c2111f4d962ccc9ada4e1ba52ad8cc932eab7a735a

Score

10^/10

matiex collection keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
k4kuml@yandex.com
Password:
GOOD123456

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
behavioral1/memory/1724-63-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1724-64-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1724-66-0x000000000046E4EE-mapping.dmp	family_matiex
behavioral1/memory/1724-65-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1724-68-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex
behavioral1/memory/1724-70-0x0000000000400000-0x0000000000474000-memory.dmp	family_matiex

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Purchase Order.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.pdf.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

8 freegeoip.app
9 freegeoip.app
4 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Purchase Order.pdf.exe

description pid process target process

PID 908 set thread context of 1724 908 Purchase Order.pdf.exe Purchase Order.pdf.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

2028 1724 WerFault.exe Purchase Order.pdf.exe
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

1136 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Purchase Order.pdf.exe

pid process

908 Purchase Order.pdf.exe
908 Purchase Order.pdf.exe
908 Purchase Order.pdf.exe
908 Purchase Order.pdf.exe
Suspicious behavior: RenamesItself 1 IoCs

Processes:

Purchase Order.pdf.exe

pid process

1724 Purchase Order.pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Purchase Order.pdf.exePurchase Order.pdf.exe

description pid process

Token: SeDebugPrivilege 908 Purchase Order.pdf.exe
Token: SeDebugPrivilege 1724 Purchase Order.pdf.exe

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

description	pid	process	target process
PID 908 set thread context of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe

pid	pid_target	process	target process
2028	1724	WerFault.exe	Purchase Order.pdf.exe

pid	process
1136	schtasks.exe

pid	process
908	Purchase Order.pdf.exe
908	Purchase Order.pdf.exe
908	Purchase Order.pdf.exe
908	Purchase Order.pdf.exe

pid	process
1724	Purchase Order.pdf.exe

description	pid	process
Token: SeDebugPrivilege	908	Purchase Order.pdf.exe
Token: SeDebugPrivilege	1724	Purchase Order.pdf.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Purchase Order.pdf.exePurchase Order.pdf.exe

description	pid	process	target process
PID 908 wrote to memory of 1136	908	Purchase Order.pdf.exe	schtasks.exe
PID 908 wrote to memory of 1136	908	Purchase Order.pdf.exe	schtasks.exe
PID 908 wrote to memory of 1136	908	Purchase Order.pdf.exe	schtasks.exe
PID 908 wrote to memory of 1136	908	Purchase Order.pdf.exe	schtasks.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 908 wrote to memory of 1724	908	Purchase Order.pdf.exe	Purchase Order.pdf.exe
PID 1724 wrote to memory of 2028	1724	Purchase Order.pdf.exe	WerFault.exe
PID 1724 wrote to memory of 2028	1724	Purchase Order.pdf.exe	WerFault.exe
PID 1724 wrote to memory of 2028	1724	Purchase Order.pdf.exe	WerFault.exe
PID 1724 wrote to memory of 2028	1724	Purchase Order.pdf.exe	WerFault.exe

outlook_office_path 1 IoCs

Processes:

Purchase Order.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.pdf.exe

outlook_win_path 1 IoCs

Processes:

Purchase Order.pdf.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.pdf.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TluNTUKXvqN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1F35.tmp"
2⤵
- Creates scheduled task(s)
PID:1136

C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1724 -s 1780
3⤵
- Program crash
PID:2028

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

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1F35.tmp
Filesize
1KB

MD5
19661c9ea01fd29bab87e0a6a7f27186

SHA1
0d3973eff8d7179f1385ba7fb6f602e9445b7fd1

SHA256
f14dbf082547df45703107dd78e9a6e8a10f8fdd57ab7e64fd3425852d26cdd4

SHA512
cdf475ebc1f209350e4a1bf52be4762e3786e2bbbcf62ac5259d5d927585e2a656660296af3cb6ad5a2a490c75a1be556cf3d3df2f802fbb95db8971bf638130

Download Submit
memory/908-54-0x00000000010E0000-0x0000000001140000-memory.dmp

Filesize
384KB

Download
memory/908-55-0x00000000003C0000-0x00000000003CA000-memory.dmp

Filesize
40KB

Download
memory/908-56-0x0000000000F00000-0x0000000000F54000-memory.dmp

Filesize
336KB

Download
memory/908-57-0x0000000005690000-0x0000000005702000-memory.dmp

Filesize
456KB

Download
memory/1136-58-0x0000000000000000-mapping.dmp

Download
memory/1724-63-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-61-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-60-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-64-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-66-0x000000000046E4EE-mapping.dmp

Download
memory/1724-65-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-68-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-70-0x0000000000400000-0x0000000000474000-memory.dmp

Filesize
464KB

Download
memory/1724-71-0x00000000756A1000-0x00000000756A3000-memory.dmp

Filesize
8KB

Download
memory/2028-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads