Malware Analysis Report

2024-10-23 17:17

Sample ID 240910-btvwrssanf
Target 4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe
SHA256 4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1
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

4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1

Threat Level: Known bad

The file 4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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

Checks computer location settings

Reads user/profile data of web browsers

Executes dropped EXE

Loads dropped DLL

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Scheduled Task/Job: Scheduled Task

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-10 01:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-10 01:26

Reported

2024-09-10 01:29

Platform

win7-20240903-en

Max time kernel

142s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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 2872 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2872 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2872 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2872 wrote to memory of 2748 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 2872 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2872 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2872 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Windows\SysWOW64\schtasks.exe
PID 2872 wrote to memory of 2564 N/A C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe C:\Windows\SysWOW64\schtasks.exe
PID 1532 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 1560 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 840 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 840 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 840 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe
PID 1532 wrote to memory of 840 N/A C:\Windows\system32\taskeng.exe C:\Users\Admin\AppData\Local\Temp\service123.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe

"C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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 {5CB1849C-7691-4AD8-8ADF-75A6607870DC} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\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 tventyv20pn.top udp
RU 194.87.248.136:80 tventyv20pn.top tcp

Files

memory/2872-0-0x0000000000400000-0x0000000001068000-memory.dmp

memory/2872-1-0x0000000000400000-0x0000000001068000-memory.dmp

memory/2872-15-0x0000000000400000-0x0000000001068000-memory.dmp

memory/2748-17-0x0000000000900000-0x0000000000911000-memory.dmp

memory/2748-18-0x00000000746A0000-0x00000000747DC000-memory.dmp

memory/1560-26-0x0000000000900000-0x0000000000911000-memory.dmp

memory/840-41-0x0000000000900000-0x0000000000911000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-10 01:26

Reported

2024-09-10 01:29

Platform

win10v2004-20240802-en

Max time kernel

146s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\service123.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\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.exe

"C:\Users\Admin\AppData\Local\Temp\4022b529efa2d5cfea939732cab5f0829c1129809b7b6813bd1e80e7e9b14dc1.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 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 tventyv20pn.top udp
RU 194.87.248.136:80 tventyv20pn.top tcp
US 8.8.8.8:53 136.248.87.194.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp

Files

memory/3028-0-0x0000000000400000-0x0000000001068000-memory.dmp

memory/3028-1-0x0000000000400000-0x0000000001068000-memory.dmp

memory/3028-13-0x0000000000400000-0x0000000001068000-memory.dmp

memory/3516-15-0x0000000000C40000-0x0000000000C51000-memory.dmp

memory/3516-16-0x0000000075050000-0x000000007518C000-memory.dmp

memory/3412-25-0x0000000000C40000-0x0000000000C51000-memory.dmp

memory/2868-40-0x0000000000C40000-0x0000000000C51000-memory.dmp