matiex | 23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a

General

Target

23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe
Size

595KB
MD5

84503c47129e8677ea66a686eb18b112
SHA1

7568eaa0efd8ee7e68c96039396389677df822da
SHA256

23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a
SHA512

5e782746c48e222c7a991e35cd53efb25c510491995df797e11187d5866b1c76a13a4503c9f1b1d08a55816747d77ec1f2a36bbcfc0c656979830e58d7060ddb

Score

10^/10

matiex collection keylogger stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1402180145:AAG6hmg8QGRGiHQwRXC9wKOtIEyFy3aT6ms/sendMessage?chat_id=1299507057

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/996-136-0x0000000000400000-0x0000000000476000-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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.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 checkip.dyndns.org
10 freegeoip.app
11 freegeoip.app

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe

description	pid	process	target process
PID 456 set thread context of 996	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	MSBuild.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1696 996 WerFault.exe MSBuild.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

3976 schtasks.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe

pid process

456 23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 996 MSBuild.exe

pid	pid_target	process	target process
1696	996	WerFault.exe	MSBuild.exe

pid	process
3976	schtasks.exe

pid	process
456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe

description	pid	process
Token: SeDebugPrivilege	996	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.execmd.exe

description	pid	process	target process
PID 456 wrote to memory of 4432	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	cmd.exe
PID 456 wrote to memory of 4432	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	cmd.exe
PID 456 wrote to memory of 4432	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	cmd.exe
PID 456 wrote to memory of 4380	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	cmd.exe
PID 456 wrote to memory of 4380	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	cmd.exe
PID 456 wrote to memory of 4380	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	cmd.exe
PID 4380 wrote to memory of 3976	4380	cmd.exe	schtasks.exe
PID 4380 wrote to memory of 3976	4380	cmd.exe	schtasks.exe
PID 4380 wrote to memory of 3976	4380	cmd.exe	schtasks.exe
PID 456 wrote to memory of 996	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	MSBuild.exe
PID 456 wrote to memory of 996	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	MSBuild.exe
PID 456 wrote to memory of 996	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	MSBuild.exe
PID 456 wrote to memory of 996	456	23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe
"C:\Users\Admin\AppData\Local\Temp\23a7c274f2cc0869be588d6ab18edda7b6e6092a80d62c5c782b4f7d6a2a747a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:456

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c cls
2⤵
PID:4432

C:\Windows\SysWOW64\cmd.exe
cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\039462f71f604c9aaf15be88cc879815.xml"
2⤵
- Suspicious use of WriteProcessMemory
PID:4380

C:\Windows\SysWOW64\schtasks.exe
schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\039462f71f604c9aaf15be88cc879815.xml"
3⤵
- Creates scheduled task(s)
PID:3976

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:996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 996 -s 2100
3⤵
- Program crash
PID:1696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 996 -ip 996
1⤵
PID:4768

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

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\039462f71f604c9aaf15be88cc879815.xml
Filesize
1KB

MD5
57e80c1cd83971b009db6462dec561e8

SHA1
9890fc3fc7b93bb9dce0c624486307cff2a26927

SHA256
e6cb647c0aee80cbac58f101ba47620657c8cd58f9a0aa91c6f8a4466e4ebc6f

SHA512
acc99eb56c615f669ef933c34ae86a1ba41a5ea5108a211de14107293d0bea7eb45e317bdb9b833b1262a1022fa4aa4462f4f3c6a19fa9481320dbb75ee41dd6

Download Submit
memory/456-131-0x00000000008B0000-0x00000000008DC000-memory.dmp

Filesize
176KB

Download
memory/996-135-0x0000000000000000-mapping.dmp

Download
memory/996-136-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/996-137-0x0000000004ED0000-0x0000000004F6C000-memory.dmp

Filesize
624KB

Download
memory/996-138-0x0000000004F70000-0x0000000004FD6000-memory.dmp

Filesize
408KB

Download
memory/996-139-0x0000000006420000-0x00000000069C4000-memory.dmp

Filesize
5.6MB

Download
memory/3976-133-0x0000000000000000-mapping.dmp

Download
memory/4380-132-0x0000000000000000-mapping.dmp

Download
memory/4432-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads