matiex | 8b899e8cbf23c5463bf7aaadf1b161298b96c260a7f87b3376142424237fcae3

General

Target

gsxp5mkd0ACsDub.exe
Size

949KB
MD5

ac9577cdc33e7cf5cd3193d9a02b5ee6
SHA1

3ca264ffe003d0a1c3b196169ed5cf672b3b1794
SHA256

e1f6a0b698c957d92bc86fdaf9add81405fc26c716f691fb34148485a93de97c
SHA512

0f9b55ff971e618a53f2366f2a2dc7236ef513dffd561e0e0eb97c3166a738ae754ad9ea83e9d8803639c91f8bc8b90a843ca1a6fb854c7b8b978e88edb3e54a

Score

10^/10

matiex evasion keylogger stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1395392888:AAFrJovDdZICOFB0gX0eGWrAUzEKCRpv8xo/sendMessage?chat_id=1300181783

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/5028-137-0x0000000000400000-0x0000000000476000-memory.dmp	family_matiex

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	gsxp5mkd0ACsDub.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	gsxp5mkd0ACsDub.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

35 checkip.dyndns.org

flow	ioc
35	checkip.dyndns.org

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

gsxp5mkd0ACsDub.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	gsxp5mkd0ACsDub.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	gsxp5mkd0ACsDub.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

gsxp5mkd0ACsDub.exe

description pid process target process

PID 2300 set thread context of 5028 2300 gsxp5mkd0ACsDub.exe gsxp5mkd0ACsDub.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

gsxp5mkd0ACsDub.exe

description pid process

Token: SeDebugPrivilege 5028 gsxp5mkd0ACsDub.exe

description	pid	process	target process
PID 2300 set thread context of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe

description	pid	process
Token: SeDebugPrivilege	5028	gsxp5mkd0ACsDub.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

gsxp5mkd0ACsDub.exe

description	pid	process	target process
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe
PID 2300 wrote to memory of 5028	2300	gsxp5mkd0ACsDub.exe	gsxp5mkd0ACsDub.exe

C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe
"C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2300

C:\Users\Admin\AppData\Local\Temp\gsxp5mkd0ACsDub.exe
"{path}"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:5028

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\gsxp5mkd0ACsDub.exe.log
Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
memory/2300-130-0x0000000000260000-0x0000000000354000-memory.dmp

Filesize
976KB

Download
memory/2300-131-0x0000000005240000-0x00000000057E4000-memory.dmp

Filesize
5.6MB

Download
memory/2300-132-0x0000000004FB0000-0x0000000005042000-memory.dmp

Filesize
584KB

Download
memory/2300-133-0x0000000005050000-0x000000000505A000-memory.dmp

Filesize
40KB

Download
memory/2300-134-0x0000000005890000-0x000000000592C000-memory.dmp

Filesize
624KB

Download
memory/2300-135-0x0000000007690000-0x00000000076F6000-memory.dmp

Filesize
408KB

Download
memory/5028-137-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/5028-136-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads