Malware Analysis Report

2024-10-19 02:39

Sample ID 240908-238gbsseme
Target Windows.exe
SHA256 4311121804332b647e02280a9c551c85c16a46f24f2d2107a9bdceaa8923afa1
Tags
cryptbot credential_access discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4311121804332b647e02280a9c551c85c16a46f24f2d2107a9bdceaa8923afa1

Threat Level: Known bad

The file Windows.exe was found to be: Known bad.

Malicious Activity Summary

cryptbot credential_access discovery spyware stealer

CryptBot

Credentials from Password Stores: Credentials from Web Browsers

Loads dropped DLL

Executes dropped EXE

Reads user/profile data of web browsers

Checks computer location settings

Checks installed software on the system

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Checks processor information in registry

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-08 23:07

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-08 23:07

Reported

2024-09-08 23:10

Platform

win7-20240708-en

Max time kernel

144s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Windows.exe"

Signatures

CryptBot

spyware stealer cryptbot

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2200 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2200 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2200 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2200 wrote to memory of 2640 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2200 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Windows\SysWOW64\schtasks.exe
PID 2200 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Windows\SysWOW64\schtasks.exe
PID 2200 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Windows\SysWOW64\schtasks.exe
PID 2200 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Windows.exe C:\Windows\SysWOW64\schtasks.exe
PID 2732 wrote to memory of 1468 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 1468 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 1468 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 1468 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 472 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 472 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 472 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2732 wrote to memory of 472 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Windows.exe

"C:\Users\Admin\AppData\Local\Temp\Windows.exe"

C:\Users\Admin\AppData\Local\Temp\service123.exe

"C:\Users\Admin\AppData\Local\Temp\service123.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f

C:\Windows\system32\taskeng.exe

taskeng.exe {CCFE488C-8291-4C8F-AE3C-43FDF60C299B} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]

C:\Users\Admin\AppData\Local\Temp\service123.exe

C:\Users\Admin\AppData\Local\Temp\/service123.exe

C:\Users\Admin\AppData\Local\Temp\service123.exe

C:\Users\Admin\AppData\Local\Temp\/service123.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 thirtv13sb.top udp
RU 195.133.13.230:80 thirtv13sb.top tcp

Files

memory/2200-0-0x0000000000400000-0x0000000001065000-memory.dmp

memory/2200-1-0x0000000000400000-0x0000000001065000-memory.dmp

memory/2200-13-0x0000000000400000-0x0000000001065000-memory.dmp

memory/2640-16-0x0000000000CA0000-0x0000000000CB1000-memory.dmp

memory/2640-17-0x00000000747E0000-0x000000007491C000-memory.dmp

memory/1468-29-0x0000000000CA0000-0x0000000000CB1000-memory.dmp

memory/472-44-0x0000000000CA0000-0x0000000000CB1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-08 23:07

Reported

2024-09-08 23:10

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Windows.exe"

Signatures

CryptBot

spyware stealer cryptbot

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A

Reads user/profile data of web browsers

spyware stealer

Checks installed software on the system

discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\service123.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\Windows.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Windows.exe

"C:\Users\Admin\AppData\Local\Temp\Windows.exe"

C:\Users\Admin\AppData\Local\Temp\service123.exe

"C:\Users\Admin\AppData\Local\Temp\service123.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /tn "ServiceData4" /tr "C:\Users\Admin\AppData\Local\Temp\/service123.exe" /st 00:01 /du 9800:59 /sc once /ri 1 /f

C:\Users\Admin\AppData\Local\Temp\service123.exe

C:\Users\Admin\AppData\Local\Temp\/service123.exe

C:\Users\Admin\AppData\Local\Temp\service123.exe

C:\Users\Admin\AppData\Local\Temp\/service123.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 thirtv13sb.top udp
RU 195.133.13.230:80 thirtv13sb.top tcp
US 8.8.8.8:53 230.13.133.195.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 59.170.16.2.in-addr.arpa udp
IE 52.111.236.23:443 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3520-0-0x0000000000400000-0x0000000001065000-memory.dmp

memory/3520-1-0x0000000000400000-0x0000000001065000-memory.dmp

memory/3520-13-0x0000000000400000-0x0000000001065000-memory.dmp

memory/2756-15-0x0000000000ED0000-0x0000000000EE1000-memory.dmp

memory/2756-16-0x0000000075AF0000-0x0000000075C2C000-memory.dmp

memory/1780-27-0x0000000000ED0000-0x0000000000EE1000-memory.dmp

memory/2260-42-0x0000000000ED0000-0x0000000000EE1000-memory.dmp