Malware Analysis Report

2024-10-10 13:01

Sample ID 240618-x6cfvayhnr
Target f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe
SHA256 f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550
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

f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550

Threat Level: Known bad

The file f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe was found to be: Known bad.

Malicious Activity Summary

rat dcrat infostealer

DcRat

DCRat payload

Process spawned unexpected child process

Dcrat family

DCRat payload

Checks computer location settings

Executes dropped EXE

Drops file in Windows directory

Drops file in Program Files directory

Enumerates physical storage devices

Unsigned PE

Modifies registry class

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-18 19:27

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 19:27

Reported

2024-06-18 19:30

Platform

win7-20240508-en

Max time kernel

127s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.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

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:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Windows NT\Accessories\taskhost.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\System.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Idle.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Mozilla Maintenance Service\logs\7a0fd90576e088 C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Mozilla Maintenance Service\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Windows Photo Viewer\fr-FR\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Mozilla Maintenance Service\logs\explorer.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Windows NT\Accessories\b75386f1303e64 C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Windows Photo Viewer\fr-FR\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\27d1bcfc3c54e0 C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\6ccacd8608530f C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\diagnostics\index\winlogon.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Windows\Prefetch\ReadyBoot\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Windows\Prefetch\ReadyBoot\fb32fb451612e5 C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe

"C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Application Data\sppsvc.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Users\All Users\Application Data\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\Application Data\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows NT\Accessories\taskhost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\taskhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows NT\Accessories\taskhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\winlogon.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\winlogon.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550f" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Adobe\Acrobat\9.0\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550" /sc ONLOGON /tr "'C:\Users\All Users\Adobe\Acrobat\9.0\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550f" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Adobe\Acrobat\9.0\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Sync Framework\v1.0\Runtime\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Photo Viewer\fr-FR\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\fr-FR\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Photo Viewer\fr-FR\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\System.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Microsoft Visual Studio 8\SDK\System.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550f" /sc MINUTE /mo 12 /tr "'C:\Windows\Prefetch\ReadyBoot\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550" /sc ONLOGON /tr "'C:\Windows\Prefetch\ReadyBoot\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550f" /sc MINUTE /mo 5 /tr "'C:\Windows\Prefetch\ReadyBoot\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\Recovery\96702242-0d98-11ef-bfa8-5aba25856535\lsass.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\96702242-0d98-11ef-bfa8-5aba25856535\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Recovery\96702242-0d98-11ef-bfa8-5aba25856535\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Idle.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\explorer.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\sppsvc.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\3DwaTFc6qk.bat"

C:\Windows\system32\w32tm.exe

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

C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe

"C:\Program Files (x86)\Mozilla Maintenance Service\csrss.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 cz61028.tw1.ru udp
RU 92.53.96.121:80 cz61028.tw1.ru tcp
RU 92.53.96.121:80 cz61028.tw1.ru tcp
RU 92.53.96.121:80 cz61028.tw1.ru tcp
RU 92.53.96.121:80 cz61028.tw1.ru tcp
RU 92.53.96.121:80 cz61028.tw1.ru tcp

Files

memory/1672-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

memory/1672-1-0x0000000000EA0000-0x0000000000F9C000-memory.dmp

memory/1672-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

memory/1672-3-0x0000000000650000-0x0000000000662000-memory.dmp

memory/1672-4-0x00000000009B0000-0x00000000009BC000-memory.dmp

C:\MSOCache\All Users\winlogon.exe

MD5 4b4fbd1058bad316a931918769027276
SHA1 598bbff84cfde0d002feeefd19dae6a20fcfcbf8
SHA256 f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550
SHA512 108c4390dc8944f43579ff8c052207a441f036de68e99a6c41cb28f9d71a6a751e10f918b873dc177ba0a241b402980aed5c3a21003bce250d62fc3afc1e2344

memory/1672-38-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\3DwaTFc6qk.bat

MD5 e2edc39355dfce29f7bdf383b0ea16cd
SHA1 8a40003986cee6ac2fa57e8ecb82bdc1acee0fee
SHA256 03de5ca7d99a997b811b658011ba7fcc49f39a42de864e4623a66f3cc8ad2c49
SHA512 eb5997c603c4434323704a83a322106414c3bc2890cb1979e816fb735936f98cf7269a1a1b41504a490afbfb14923806977f21068b7899ad02ed2d3d612fb6a9

memory/2008-41-0x00000000012F0000-0x00000000013EC000-memory.dmp

memory/2008-42-0x0000000000140000-0x0000000000152000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-18 19:27

Reported

2024-06-18 19:30

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

58s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.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

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Public\Music\upfc.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Windows Multimedia Platform\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files\MSBuild\Microsoft\StartMenuExperienceHost.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files\MSBuild\Microsoft\55b276f4edf653 C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\lsass.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\6203df4a6bafc7 C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files\ModifiableWindowsApps\winlogon.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Program Files\Windows Multimedia Platform\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File opened for modification C:\Program Files\Windows Multimedia Platform\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\PrintDialog\microsoft.system.package.metadata\Autogen\csrss.exe C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
File created C:\Windows\PrintDialog\microsoft.system.package.metadata\Autogen\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Public\Music\upfc.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe

"C:\Users\Admin\AppData\Local\Temp\f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Multimedia Platform\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows Multimedia Platform\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Multimedia Platform\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Program Files\MSBuild\Microsoft\StartMenuExperienceHost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\StartMenuExperienceHost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\Program Files\MSBuild\Microsoft\StartMenuExperienceHost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\lsass.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\lsass.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Windows\PrintDialog\microsoft.system.package.metadata\Autogen\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\PrintDialog\microsoft.system.package.metadata\Autogen\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Windows\PrintDialog\microsoft.system.package.metadata\Autogen\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Music\upfc.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\Public\Music\upfc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 5 /tr "'C:\Users\Public\Music\upfc.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\LAi8jYRa4E.bat"

C:\Windows\system32\w32tm.exe

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

C:\Users\Public\Music\upfc.exe

"C:\Users\Public\Music\upfc.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 cz61028.tw1.ru udp
US 8.8.8.8:53 cz61028.tw1.ru udp

Files

memory/1784-0-0x00007FFDEBC23000-0x00007FFDEBC25000-memory.dmp

memory/1784-1-0x0000000000540000-0x000000000063C000-memory.dmp

memory/1784-2-0x00007FFDEBC20000-0x00007FFDEC6E1000-memory.dmp

memory/1784-3-0x0000000002700000-0x0000000002712000-memory.dmp

memory/1784-4-0x000000001BD30000-0x000000001C258000-memory.dmp

memory/1784-5-0x0000000002740000-0x000000000274C000-memory.dmp

C:\Users\Public\Music\upfc.exe

MD5 4b4fbd1058bad316a931918769027276
SHA1 598bbff84cfde0d002feeefd19dae6a20fcfcbf8
SHA256 f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550
SHA512 108c4390dc8944f43579ff8c052207a441f036de68e99a6c41cb28f9d71a6a751e10f918b873dc177ba0a241b402980aed5c3a21003bce250d62fc3afc1e2344

memory/1784-21-0x00007FFDEBC20000-0x00007FFDEC6E1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\LAi8jYRa4E.bat

MD5 aa326d8c433a4eb8b745c36719b4c6a9
SHA1 5ba1836f4c51105661cd0900b3c53db8c870f84a
SHA256 398ec8488d5b76670f9d75ad37781235ef65cb6d63b5ea332ad751401c0f9470
SHA512 aa23cf453b15661a8a347e7c72461c28daace9b76d566481528197928bd0c269f5088924aed5b8cbcc7526de6c97abc0e8d301171429ade4c125b63218a5cead

memory/1556-26-0x0000000001570000-0x0000000001582000-memory.dmp