matiex | 7f5764844ab366849a5c4dc0c5b6af4fce6b96b1f8411a8b6e4484a418aaf1d7

General

Target

DEKONT.exe
Size

554KB
MD5

b68bd92478369e4dcd776b77326fa66b
SHA1

41b039e8d555c0b0b04d172b6509859b8e32c878
SHA256

16fda49dd0a5b3c520619c1f5e88723cd2fe0c92b9cc2946416b2e29a1ccdfff
SHA512

f216b9c25cdd054fcde7ed0038ab56a1a0952a65eee3b12cf41406a1908a7012683f8303981cad959bf904212cf8440b618fc39fd22275879eece52f45a111de

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

Credentials

Protocol: smtp
Host:
srvc13.turhost.com
Port:
587
Username:
[email protected]
Password:
italik2015

Signatures

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

Matiex Main Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/204-133-0x0000000000600000-0x0000000000676000-memory.dmp	family_matiex

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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

18 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

DEKONT.exe

description pid process target process

PID 4248 set thread context of 204 4248 DEKONT.exe MSBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3472 204 WerFault.exe MSBuild.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

DEKONT.exe

pid process

4248 DEKONT.exe
4248 DEKONT.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 204 MSBuild.exe

flow	ioc
18	checkip.dyndns.org

description	pid	process	target process
PID 4248 set thread context of 204	4248	DEKONT.exe	MSBuild.exe

pid	pid_target	process	target process
3472	204	WerFault.exe	MSBuild.exe

pid	process
4248	DEKONT.exe
4248	DEKONT.exe

description	pid	process
Token: SeDebugPrivilege	204	MSBuild.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

DEKONT.exe

description	pid	process	target process
PID 4248 wrote to memory of 3884	4248	DEKONT.exe	cmd.exe
PID 4248 wrote to memory of 3884	4248	DEKONT.exe	cmd.exe
PID 4248 wrote to memory of 3884	4248	DEKONT.exe	cmd.exe
PID 4248 wrote to memory of 204	4248	DEKONT.exe	MSBuild.exe
PID 4248 wrote to memory of 204	4248	DEKONT.exe	MSBuild.exe
PID 4248 wrote to memory of 204	4248	DEKONT.exe	MSBuild.exe
PID 4248 wrote to memory of 204	4248	DEKONT.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\DEKONT.exe
"C:\Users\Admin\AppData\Local\Temp\DEKONT.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:3884
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:204
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 204 -s 1692
    3⤵
    - Program crash
    PID:3472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 204 -ip 204
1⤵
PID:3056

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/204-132-0x0000000000000000-mapping.dmp

Download
memory/204-133-0x0000000000600000-0x0000000000676000-memory.dmp

Filesize
472KB

Download
memory/204-134-0x0000000004C00000-0x0000000004C9C000-memory.dmp

Filesize
624KB

Download
memory/204-135-0x0000000005250000-0x00000000057F4000-memory.dmp

Filesize
5.6MB

Download
memory/204-136-0x0000000004D10000-0x0000000004D76000-memory.dmp

Filesize
408KB

Download
memory/3884-130-0x0000000000000000-mapping.dmp

Download
memory/4248-131-0x000000000133D000-0x0000000001340000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads