matiex | 3c28740370fb083950c3249fc5dffaad44c5a94cac502d13b46fbd6f743dc259

General

Target

UNGO PAYMENT FORM08656049_DOC.exe
Size

436KB
MD5

f4d7da499d3f9f03e20a1768d069afa9
SHA1

01b300d3161e8ee0f8399f48fa71ef9f68edfd54
SHA256

3c28740370fb083950c3249fc5dffaad44c5a94cac502d13b46fbd6f743dc259
SHA512

5f2857e5f410e470aebc5f4987cb92984fbbbd7da2d4dccc3aaa0ed6efd1e0d0f0ce5b03acccf45882100c2d0bdfbe209c14b5ee8c4c11b1a14ea0c70063eb17

Score

10^/10

matiex evasion keylogger spyware stealer

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1343989244:AAGiKFYQpwhU7CTGXdVgD1pX0ZPn9uK-YpM/sendMessage?chat_id=1246371216

Signatures

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

Matiex Main Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3880-14-0x0000000000400000-0x0000000000470000-memory.dmp	family_matiex
behavioral2/memory/3880-15-0x000000000046B77E-mapping.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	UNGO PAYMENT FORM08656049_DOC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	UNGO PAYMENT FORM08656049_DOC.exe

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
14	checkip.dyndns.org
17	freegeoip.app
18	freegeoip.app

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	UNGO PAYMENT FORM08656049_DOC.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	UNGO PAYMENT FORM08656049_DOC.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3968 set thread context of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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

pid	Process
2392	schtasks.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = d6d78d042a81d601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3968	UNGO PAYMENT FORM08656049_DOC.exe
3968	UNGO PAYMENT FORM08656049_DOC.exe
3968	UNGO PAYMENT FORM08656049_DOC.exe
3968	UNGO PAYMENT FORM08656049_DOC.exe
3880	UNGO PAYMENT FORM08656049_DOC.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	660	svchost.exe
Token: SeCreatePagefilePrivilege	660	svchost.exe
Token: SeDebugPrivilege	3968	UNGO PAYMENT FORM08656049_DOC.exe
Token: SeDebugPrivilege	3880	UNGO PAYMENT FORM08656049_DOC.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3968 wrote to memory of 2392	3968	UNGO PAYMENT FORM08656049_DOC.exe	76
PID 3968 wrote to memory of 2392	3968	UNGO PAYMENT FORM08656049_DOC.exe	76
PID 3968 wrote to memory of 2392	3968	UNGO PAYMENT FORM08656049_DOC.exe	76
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78
PID 3968 wrote to memory of 3880	3968	UNGO PAYMENT FORM08656049_DOC.exe	78

C:\Users\Admin\AppData\Local\Temp\UNGO PAYMENT FORM08656049_DOC.exe
"C:\Users\Admin\AppData\Local\Temp\UNGO PAYMENT FORM08656049_DOC.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PTSVgqFWfbxB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp45D4.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2392
- C:\Users\Admin\AppData\Local\Temp\UNGO PAYMENT FORM08656049_DOC.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3880

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

2

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/3880-23-0x0000000006C10000-0x0000000006C11000-memory.dmp

Filesize
4KB

Download
memory/3880-17-0x0000000073520000-0x0000000073C0E000-memory.dmp

Filesize
6.9MB

Download
memory/3880-14-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/3968-5-0x0000000005310000-0x0000000005311000-memory.dmp

Filesize
4KB

Download
memory/3968-9-0x0000000007C70000-0x0000000007C71000-memory.dmp

Filesize
4KB

Download
memory/3968-10-0x000000000A320000-0x000000000A3B1000-memory.dmp

Filesize
580KB

Download
memory/3968-11-0x0000000001240000-0x0000000001241000-memory.dmp

Filesize
4KB

Download
memory/3968-8-0x0000000007B70000-0x0000000007BC5000-memory.dmp

Filesize
340KB

Download
memory/3968-7-0x00000000077F0000-0x00000000077F1000-memory.dmp

Filesize
4KB

Download
memory/3968-6-0x00000000055C0000-0x00000000055C3000-memory.dmp

Filesize
12KB

Download
memory/3968-0-0x0000000073520000-0x0000000073C0E000-memory.dmp

Filesize
6.9MB

Download
memory/3968-4-0x0000000005340000-0x0000000005341000-memory.dmp

Filesize
4KB

Download
memory/3968-3-0x0000000005990000-0x0000000005991000-memory.dmp

Filesize
4KB

Download
memory/3968-1-0x0000000000A70000-0x0000000000A71000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads