matiex | a80660a551d427bd67935c0380d3edca52a17a57005dde154ba2acfd29bebade

General

Target

Confirmation Of Proforma Invoice.exe
Size

1.5MB
MD5

f5142955783a16ea5957a10c51e64f33
SHA1

c843043f0b39623bf0862f8460b669c923b4c2e9
SHA256

a80660a551d427bd67935c0380d3edca52a17a57005dde154ba2acfd29bebade
SHA512

e214ac6ba2d3cb4d9b6c77fc7ce87345d196542f50531d93b103803b5f5c16c4bb59424325ad8ccbf7095af6db1428c4ffea489287aa73aae2358734913870b5

Score

10^/10

matiex keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
mail.thts.vn
Port:
25
Username:
[email protected]
Password:
123luongngan1989

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/1624-67-0x000000000046D95E-mapping.dmp	family_matiex
behavioral1/memory/1624-66-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1624-68-0x0000000000400000-0x0000000000472000-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
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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1768 set thread context of 1624	1768	Confirmation Of Proforma Invoice.exe	29

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1528	1624	WerFault.exe	29

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1528	WerFault.exe
1528	WerFault.exe
1528	WerFault.exe
1528	WerFault.exe
1528	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1768	Confirmation Of Proforma Invoice.exe
Token: SeDebugPrivilege	1624	Confirmation Of Proforma Invoice.exe
Token: SeDebugPrivilege	1528	WerFault.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1768 wrote to memory of 1624	1768	Confirmation Of Proforma Invoice.exe	29
PID 1624 wrote to memory of 1528	1624	Confirmation Of Proforma Invoice.exe	31
PID 1624 wrote to memory of 1528	1624	Confirmation Of Proforma Invoice.exe	31
PID 1624 wrote to memory of 1528	1624	Confirmation Of Proforma Invoice.exe	31
PID 1624 wrote to memory of 1528	1624	Confirmation Of Proforma Invoice.exe	31

C:\Users\Admin\AppData\Local\Temp\Confirmation Of Proforma Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Confirmation Of Proforma Invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Users\Admin\AppData\Local\Temp\Confirmation Of Proforma Invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\Confirmation Of Proforma Invoice.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1624 -s 1276
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1528

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1528-72-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/1624-66-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1624-68-0x0000000000400000-0x0000000000472000-memory.dmp

Filesize
456KB

Download
memory/1624-70-0x0000000002660000-0x0000000002661000-memory.dmp

Filesize
4KB

Download
memory/1768-60-0x0000000000D50000-0x0000000000D51000-memory.dmp

Filesize
4KB

Download
memory/1768-62-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

Filesize
4KB

Download
memory/1768-63-0x00000000008D0000-0x00000000008FD000-memory.dmp

Filesize
180KB

Download
memory/1768-64-0x00000000051F0000-0x0000000005276000-memory.dmp

Filesize
536KB

Download
memory/1768-65-0x0000000005280000-0x00000000052EF000-memory.dmp

Filesize
444KB

Download

Analysis

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