Malware Analysis Report

2024-10-10 13:07

Sample ID 240618-xv8d5sygjn
Target d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe
SHA256 d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13
Tags
rat dcrat infostealer
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

d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13

Threat Level: Known bad

The file d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe was found to be: Known bad.

Malicious Activity Summary

rat dcrat infostealer

Dcrat family

DcRat

Process spawned unexpected child process

DCRat payload

DCRat payload

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Drops file in Program Files directory

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Scheduled Task/Job: Scheduled Task

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-18 19:11

Signatures

DCRat payload

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

Dcrat family

dcrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-18 19:11

Reported

2024-06-18 19:14

Platform

win7-20240611-en

Max time kernel

118s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe"

Signatures

DcRat

rat infostealer dcrat

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe

DCRat payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\csrss.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\886983d96e3d3e C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\6203df4a6bafc7 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Portable Devices\886983d96e3d3e C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Common Files\DESIGNER\886983d96e3d3e C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\csrss.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\6ccacd8608530f C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Mozilla Maintenance Service\logs\services.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Windows Portable Devices\csrss.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Mozilla Maintenance Service\logs\c5b4cb5e9653cc C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\Idle.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\lsass.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe C:\chainSurrogate\browsersvc.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\LiveKernelReports\c5b4cb5e9653cc C:\chainSurrogate\browsersvc.exe N/A
File created C:\Windows\AppCompat\Programs\System.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Windows\AppCompat\Programs\27d1bcfc3c54e0 C:\chainSurrogate\browsersvc.exe N/A
File created C:\Windows\CSC\v2.0.6\Idle.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Windows\LiveKernelReports\services.exe C:\chainSurrogate\browsersvc.exe N/A

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\chainSurrogate\browsersvc.exe N/A
Token: SeDebugPrivilege N/A C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1440 wrote to memory of 2812 N/A C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe C:\Windows\SysWOW64\WScript.exe
PID 1440 wrote to memory of 2812 N/A C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe C:\Windows\SysWOW64\WScript.exe
PID 1440 wrote to memory of 2812 N/A C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe C:\Windows\SysWOW64\WScript.exe
PID 1440 wrote to memory of 2812 N/A C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe C:\Windows\SysWOW64\WScript.exe
PID 2812 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2812 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2812 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2812 wrote to memory of 2752 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2752 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2752 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2752 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2752 wrote to memory of 2736 N/A C:\Windows\SysWOW64\cmd.exe C:\chainSurrogate\browsersvc.exe
PID 2736 wrote to memory of 2996 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 2736 wrote to memory of 2996 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 2736 wrote to memory of 2996 N/A C:\chainSurrogate\browsersvc.exe C:\Windows\System32\cmd.exe
PID 2996 wrote to memory of 2860 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2996 wrote to memory of 2860 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2996 wrote to memory of 2860 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2996 wrote to memory of 880 N/A C:\Windows\System32\cmd.exe C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe
PID 2996 wrote to memory of 880 N/A C:\Windows\System32\cmd.exe C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe
PID 2996 wrote to memory of 880 N/A C:\Windows\System32\cmd.exe C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe

"C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat" "

C:\chainSurrogate\browsersvc.exe

"C:\chainSurrogate\browsersvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Sidebar\Gadgets\RSSFeeds.Gadget\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\Idle.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 7 /tr "'C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Documents\System.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\All Users\Documents\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\Documents\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "browsersvcb" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\browsersvc.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "browsersvc" /sc ONLOGON /tr "'C:\Users\Default User\browsersvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "browsersvcb" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\browsersvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\winlogon.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\winlogon.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\winlogon.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Windows\LiveKernelReports\services.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Windows\LiveKernelReports\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\lsass.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\services.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\services.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0019-0409-0000-0000000FF1CE}-C\services.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Windows\AppCompat\Programs\System.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\AppCompat\Programs\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Windows\AppCompat\Programs\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\chainSurrogate\explorer.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\chainSurrogate\explorer.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\chainSurrogate\explorer.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Portable Devices\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Portable Devices\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Common Files\DESIGNER\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Downloads\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default\Downloads\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Downloads\csrss.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\jGPM9k18FI.bat"

C:\Windows\system32\w32tm.exe

w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2

C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe

"C:\Recovery\0f2bee02-28a9-11ef-983f-46d84c032646\lsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 host1871899.hostland.pro udp
RU 185.26.122.81:80 host1871899.hostland.pro tcp

Files

C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe

MD5 ee3a4b8d5b9a45ac52fab507fcddb2ae
SHA1 101a1a475be56c7924374353a9b60d914c0a64f0
SHA256 c18b8c22abe6c0333b1c9a7e7096f8530b9c75213791df17c67b1dcd609f86c7
SHA512 95d9c4fee2b2760e0cf10eb03d69e48ae8b730b1096756d81d4dcdcacb5da88642836ff2c52d64216f3fb0e87cbc611f4f4ee1ec8e46746a38ef2ca1151049b2

C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat

MD5 c4d1668093627b8bad684c203127aea0
SHA1 6671bc621c55e507b9d04b2574edf61e392d07ce
SHA256 71f60eceed543de69425208d9db31d0d5b371792329d7ba45ba384b0327b7c38
SHA512 26cb1b5620d4da7b5e39e2ed7010bcd85c1087e9079214a6c2a41c84805ff67d0ce923ee76ef3c444ba2e944dc3f19ae6dd271f399c425aac5ec8c85edb632a2

\chainSurrogate\browsersvc.exe

MD5 05cf6d069f5b66212af39c9d6c440cce
SHA1 a0bc239516647e46d964f283698af052cd35bc18
SHA256 1481100d64ae0a34fe7d4822c42d4b9e5ce6a870149cef2cd567e0b655867412
SHA512 2f764ca77d1270cb55842371640fe35063452fce99b16bb8f1aef6ea6b2561010e231a83679d7b382181a9662b5d26f42523c93e11417e28433457e89556bd9c

memory/2736-13-0x0000000000F30000-0x0000000001006000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\jGPM9k18FI.bat

MD5 e716ce28bd3499dcdea8e00cb0799949
SHA1 dd8f77861682bde42abc78d4b60f1136a132e79f
SHA256 5c5b72a78a86f552353ca76744ea748c9518492341d2447e74921b4023036bba
SHA512 d1636c485ee18087e8a392806637a21b413c3ec1c068d3b290e45770f8761c49e3f410f32a1f52ca47842dfbb1ba4f9e3069f1fc4779bc472eef24fa011e2567

memory/880-51-0x00000000003A0000-0x0000000000476000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-18 19:11

Reported

2024-06-18 19:14

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe"

Signatures

DcRat

rat infostealer dcrat

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process N/A C:\Windows\system32\schtasks.exe

DCRat payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\WScript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\chainSurrogate\browsersvc.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\odt\csrss.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\bcastdvr\sppsvc.exe C:\chainSurrogate\browsersvc.exe N/A
File opened for modification C:\Windows\bcastdvr\sppsvc.exe C:\chainSurrogate\browsersvc.exe N/A
File created C:\Windows\bcastdvr\0a1fd5f707cd16 C:\chainSurrogate\browsersvc.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\chainSurrogate\browsersvc.exe N/A
N/A N/A C:\odt\csrss.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\chainSurrogate\browsersvc.exe N/A
Token: SeDebugPrivilege N/A C:\odt\csrss.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe

"C:\Users\Admin\AppData\Local\Temp\d675f72b0bc010f74a28dfb3401dd69dbae5d21a55624a827fa70d1041367d13.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat" "

C:\chainSurrogate\browsersvc.exe

"C:\chainSurrogate\browsersvc.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Windows\bcastdvr\sppsvc.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\bcastdvr\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Windows\bcastdvr\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 8 /tr "'C:\odt\conhost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\odt\conhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\odt\conhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\odt\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\odt\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\odt\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\chainSurrogate\sppsvc.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\chainSurrogate\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\chainSurrogate\sppsvc.exe'" /rl HIGHEST /f

C:\odt\csrss.exe

"C:\odt\csrss.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3712 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 host1871899.hostland.pro udp
RU 185.26.122.81:80 host1871899.hostland.pro tcp
US 8.8.8.8:53 81.122.26.185.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 24.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.16.234:443 chromewebstore.googleapis.com tcp
GB 172.217.16.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 234.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 1.173.189.20.in-addr.arpa udp

Files

C:\chainSurrogate\vdfN6ZiS0svPJatLSFe.vbe

MD5 ee3a4b8d5b9a45ac52fab507fcddb2ae
SHA1 101a1a475be56c7924374353a9b60d914c0a64f0
SHA256 c18b8c22abe6c0333b1c9a7e7096f8530b9c75213791df17c67b1dcd609f86c7
SHA512 95d9c4fee2b2760e0cf10eb03d69e48ae8b730b1096756d81d4dcdcacb5da88642836ff2c52d64216f3fb0e87cbc611f4f4ee1ec8e46746a38ef2ca1151049b2

C:\chainSurrogate\JOucOkolgtw8nKLZO9UO2eSMaA.bat

MD5 c4d1668093627b8bad684c203127aea0
SHA1 6671bc621c55e507b9d04b2574edf61e392d07ce
SHA256 71f60eceed543de69425208d9db31d0d5b371792329d7ba45ba384b0327b7c38
SHA512 26cb1b5620d4da7b5e39e2ed7010bcd85c1087e9079214a6c2a41c84805ff67d0ce923ee76ef3c444ba2e944dc3f19ae6dd271f399c425aac5ec8c85edb632a2

C:\chainSurrogate\browsersvc.exe

MD5 05cf6d069f5b66212af39c9d6c440cce
SHA1 a0bc239516647e46d964f283698af052cd35bc18
SHA256 1481100d64ae0a34fe7d4822c42d4b9e5ce6a870149cef2cd567e0b655867412
SHA512 2f764ca77d1270cb55842371640fe35063452fce99b16bb8f1aef6ea6b2561010e231a83679d7b382181a9662b5d26f42523c93e11417e28433457e89556bd9c

memory/3660-12-0x00007FF9EA043000-0x00007FF9EA045000-memory.dmp

memory/3660-13-0x0000000000F40000-0x0000000001016000-memory.dmp