matiex | 99a9f37b29dd440c803ea37c57a6acded495d4b49c165f66b3fbe8a427972799

Resubmissions

25/09/2020, 06:15

200925-p5n8a8xtl210

23/09/2020, 10:33

200923-91lpvszten7

Analysis

max time kernel
134s
max time network
129s
platform
windows7_x64
resource
win7
submitted
25/09/2020, 06:15

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General

Target
Invoice.exe
Size 693KB
Sample200925-p5n8a8xtl2
SHA256 99a9f37b29dd440c803ea37c57a6acded495d4b49c165f66b3fbe8a427972799
MD5 80ca7c023f86983b45096df0433a8966
SHA1 6333e753ee7549a668b7f048646244b4151a802f
SHA512 f4ff2d80babf175d9e10d63219fd870861eff8787b70e4adf69dd70621774956dacc7853e4acfa82d6fe9ae9bd38db6dd97dc96868b1151d93b5e84034eaccbb
MD5 SHA1 SHA512

Score

10^/10

matiex keylogger spyware stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol
smtp
Host
ebop.website
Port
587
Username
[email protected]
Password
P@ssw0rdP@ssw0rd

Signatures

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

Matiex Main Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1656-5-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1656-6-0x000000000046CE6E-mapping.dmp	family_matiex
behavioral1/memory/1656-7-0x0000000000400000-0x0000000000472000-memory.dmp	family_matiex
behavioral1/memory/1656-8-0x0000000000400000-0x0000000000472000-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 3 IoCs

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

flow	ioc
5	checkip.dyndns.org
10	freegeoip.app
11	freegeoip.app

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1032 set thread context of 1656	1032	Invoice.exe	28

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1656	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1656	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1032	Invoice.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1656	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28
PID 1032 wrote to memory of 1656	1032	Invoice.exe	28

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1032-0-0x0000000073F10000-0x00000000745FE000-memory.dmp

Download

memory/1032-1-0x0000000000B00000-0x0000000000B01000-memory.dmp

Download

memory/1032-3-0x0000000004E00000-0x0000000004E73000-memory.dmp

Download

memory/1656-5-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/1656-7-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/1656-8-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/1656-9-0x0000000073290000-0x000000007397E000-memory.dmp

Download