Malware Analysis Report

2025-08-11 05:04

Sample ID 241230-ckyfzavkbl
Target 2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe
SHA256 2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c
Tags
rat dcrat discovery 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

2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c

Threat Level: Known bad

The file 2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe was found to be: Known bad.

Malicious Activity Summary

rat dcrat discovery infostealer

Process spawned unexpected child process

Dcrat family

DcRat

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

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Modifies registry class

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-30 02:08

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

2024-12-30 02:08

Reported

2024-12-30 02:11

Platform

win7-20240903-en

Max time kernel

122s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe"

Signatures

DcRat

rat infostealer dcrat

Dcrat family

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:\refBrokerDhcp\msbrowser.exe N/A
N/A N/A C:\Users\Admin\Saved Games\dllhost.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 created C:\Program Files\Windows Defender\ja-JP\f3b6ecef712a24 C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\WmiPrvSE.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files\Windows Defender\ja-JP\spoolsv.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files\Mozilla Firefox\defaults\WmiPrvSE.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files\Mozilla Firefox\defaults\24dbde2999530e C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\24dbde2999530e C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\smss.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\69ddcba757bf72 C:\refBrokerDhcp\msbrowser.exe N/A
File opened for modification C:\Program Files\Windows Defender\ja-JP\spoolsv.exe C:\refBrokerDhcp\msbrowser.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Downloaded Program Files\0a1fd5f707cd16 C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Windows\BitLockerDiscoveryVolumeContents\886983d96e3d3e C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Windows\Downloaded Program Files\sppsvc.exe C:\refBrokerDhcp\msbrowser.exe N/A

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\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WScript.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\refBrokerDhcp\msbrowser.exe N/A
N/A N/A C:\Users\Admin\Saved Games\dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\refBrokerDhcp\msbrowser.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Saved Games\dllhost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3048 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 3048 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 3048 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 3048 wrote to memory of 2744 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 2744 wrote to memory of 2380 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2744 wrote to memory of 2380 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2744 wrote to memory of 2380 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2744 wrote to memory of 2380 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 2380 wrote to memory of 2712 N/A C:\Windows\SysWOW64\cmd.exe C:\refBrokerDhcp\msbrowser.exe
PID 2380 wrote to memory of 2712 N/A C:\Windows\SysWOW64\cmd.exe C:\refBrokerDhcp\msbrowser.exe
PID 2380 wrote to memory of 2712 N/A C:\Windows\SysWOW64\cmd.exe C:\refBrokerDhcp\msbrowser.exe
PID 2380 wrote to memory of 2712 N/A C:\Windows\SysWOW64\cmd.exe C:\refBrokerDhcp\msbrowser.exe
PID 2712 wrote to memory of 3000 N/A C:\refBrokerDhcp\msbrowser.exe C:\Users\Admin\Saved Games\dllhost.exe
PID 2712 wrote to memory of 3000 N/A C:\refBrokerDhcp\msbrowser.exe C:\Users\Admin\Saved Games\dllhost.exe
PID 2712 wrote to memory of 3000 N/A C:\refBrokerDhcp\msbrowser.exe C:\Users\Admin\Saved Games\dllhost.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe

"C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\refBrokerDhcp\QElwSQf83XBFhMyqm1gWbbiKf8tDaQ.vbe"

C:\Windows\SysWOW64\cmd.exe

cmd /c ""C:\refBrokerDhcp\eop7KwarhdN0r.bat" "

C:\refBrokerDhcp\msbrowser.exe

"C:\refBrokerDhcp\msbrowser.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Defender\ja-JP\spoolsv.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\ja-JP\spoolsv.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Defender\ja-JP\spoolsv.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Saved Games\dllhost.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\Saved Games\dllhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Saved Games\dllhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Windows\Downloaded Program Files\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 10 /tr "'C:\refBrokerDhcp\lsm.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 8 /tr "'C:\refBrokerDhcp\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\dwm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\wininit.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\wininit.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\wininit.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\Program Files\Mozilla Firefox\defaults\WmiPrvSE.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\defaults\WmiPrvSE.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:\Program Files\Mozilla Firefox\defaults\WmiPrvSE.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\WmiPrvSE.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\WmiPrvSE.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\WmiPrvSE.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\smss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 9 /tr "'C:\refBrokerDhcp\cmd.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 12 /tr "'C:\refBrokerDhcp\cmd.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 6 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Recovery\209d6542-69f6-11ef-b491-62cb582c238c\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\refBrokerDhcp\spoolsv.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\refBrokerDhcp\spoolsv.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\refBrokerDhcp\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\refBrokerDhcp\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0044-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f

C:\Users\Admin\Saved Games\dllhost.exe

"C:\Users\Admin\Saved Games\dllhost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 a1069594.xsph.ru udp
RU 141.8.192.164:80 a1069594.xsph.ru tcp
RU 141.8.192.164:80 a1069594.xsph.ru tcp

Files

C:\refBrokerDhcp\QElwSQf83XBFhMyqm1gWbbiKf8tDaQ.vbe

MD5 c54e49eaeb59c57e0d7bb2398e8ea617
SHA1 3e6bed8fb43f94c190bcdbfe33e9ba826275dfd6
SHA256 0bcb8b3296b1b862104bc1917793a1b743afc9e623d91f5136fbf30ae7e022ed
SHA512 d24dcd18188176f796b92d150b30d3b99c03654257fe48019308cca5ebb062c7312047fec43e0fa6823ff4ea29649c4f8db61f2ba950881df8a52ec15b662b85

C:\refBrokerDhcp\eop7KwarhdN0r.bat

MD5 65cbca0f14030e37f4536942be742fed
SHA1 1823a610cfb0945e0e234651d4045931aa241ba5
SHA256 7d881d8c2a5a8756b85abe067e24efdc7c657d1af28ba1132d0e9ae443941d5d
SHA512 87eb63d67e28c0f42c1b89c631c4573d0d8f9dc145f3720d26d3af8f7dc76e7d105b0598fe398f9e73d95e814301678097be811977c184ea2e101d4e0e8cc044

C:\refBrokerDhcp\msbrowser.exe

MD5 3d428539f2cddf97abfe6586df2f2c1d
SHA1 e828475a8e5ea8db3854cb66f0102c6532a0a997
SHA256 58a180ba10aad7f5a7c9b86b2f93213fde5e2f4816393d7a19ddc9202bc1f7a4
SHA512 325d96a63e0ddec4bb2c4c9fafa28b38c6961af0f4c282763eb82677037a50971ac2770c8277a11a80d7853218cc560600c18f7d201f23057387e0a858d05ccc

memory/2712-13-0x0000000001290000-0x0000000001366000-memory.dmp

memory/3000-50-0x00000000003A0000-0x0000000000476000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-30 02:08

Reported

2024-12-30 02:11

Platform

win10v2004-20241007-en

Max time kernel

93s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe"

Signatures

DcRat

rat infostealer dcrat

Dcrat family

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

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\Windows\SysWOW64\WScript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation C:\refBrokerDhcp\msbrowser.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\refBrokerDhcp\msbrowser.exe N/A
N/A N/A C:\Recovery\WindowsRE\SppExtComObj.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Microsoft Office 15\ClientX64\6ccacd8608530f C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files\7-Zip\Lang\dwm.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files\7-Zip\Lang\6cb0b6c459d5d3 C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Program Files\Microsoft Office 15\ClientX64\Idle.exe C:\refBrokerDhcp\msbrowser.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\debug\csrss.exe C:\refBrokerDhcp\msbrowser.exe N/A
File opened for modification C:\Windows\debug\csrss.exe C:\refBrokerDhcp\msbrowser.exe N/A
File created C:\Windows\debug\886983d96e3d3e C:\refBrokerDhcp\msbrowser.exe N/A

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\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WScript.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe N/A
Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings C:\refBrokerDhcp\msbrowser.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\refBrokerDhcp\msbrowser.exe N/A
N/A N/A C:\refBrokerDhcp\msbrowser.exe N/A
N/A N/A C:\refBrokerDhcp\msbrowser.exe N/A
N/A N/A C:\Recovery\WindowsRE\SppExtComObj.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\refBrokerDhcp\msbrowser.exe N/A
Token: SeDebugPrivilege N/A C:\Recovery\WindowsRE\SppExtComObj.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2804 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 2804 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 2804 wrote to memory of 1984 N/A C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe C:\Windows\SysWOW64\WScript.exe
PID 1984 wrote to memory of 3640 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 1984 wrote to memory of 3640 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 1984 wrote to memory of 3640 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\cmd.exe
PID 3640 wrote to memory of 2200 N/A C:\Windows\SysWOW64\cmd.exe C:\refBrokerDhcp\msbrowser.exe
PID 3640 wrote to memory of 2200 N/A C:\Windows\SysWOW64\cmd.exe C:\refBrokerDhcp\msbrowser.exe
PID 2200 wrote to memory of 2344 N/A C:\refBrokerDhcp\msbrowser.exe C:\Windows\System32\cmd.exe
PID 2200 wrote to memory of 2344 N/A C:\refBrokerDhcp\msbrowser.exe C:\Windows\System32\cmd.exe
PID 2344 wrote to memory of 1508 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2344 wrote to memory of 1508 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\w32tm.exe
PID 2344 wrote to memory of 544 N/A C:\Windows\System32\cmd.exe C:\Recovery\WindowsRE\SppExtComObj.exe
PID 2344 wrote to memory of 544 N/A C:\Windows\System32\cmd.exe C:\Recovery\WindowsRE\SppExtComObj.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe

"C:\Users\Admin\AppData\Local\Temp\2a31d3dc6783dad77df215a986789fb27933fe4b5c59705eb20c256788d4533c.exe"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\refBrokerDhcp\QElwSQf83XBFhMyqm1gWbbiKf8tDaQ.vbe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\refBrokerDhcp\eop7KwarhdN0r.bat" "

C:\refBrokerDhcp\msbrowser.exe

"C:\refBrokerDhcp\msbrowser.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Windows\debug\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Windows\debug\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\SppExtComObj.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Program Files\Microsoft Office 15\ClientX64\Idle.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office 15\ClientX64\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 12 /tr "'C:\Program Files\Microsoft Office 15\ClientX64\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Program Files\7-Zip\Lang\dwm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 8 /tr "'C:\Program Files\7-Zip\Lang\dwm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\smss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\tKvCd3mm0w.bat"

C:\Windows\system32\w32tm.exe

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

C:\Recovery\WindowsRE\SppExtComObj.exe

"C:\Recovery\WindowsRE\SppExtComObj.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 a1069594.xsph.ru udp
RU 141.8.192.164:80 a1069594.xsph.ru tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
RU 141.8.192.164:80 a1069594.xsph.ru tcp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp

Files

C:\refBrokerDhcp\QElwSQf83XBFhMyqm1gWbbiKf8tDaQ.vbe

MD5 c54e49eaeb59c57e0d7bb2398e8ea617
SHA1 3e6bed8fb43f94c190bcdbfe33e9ba826275dfd6
SHA256 0bcb8b3296b1b862104bc1917793a1b743afc9e623d91f5136fbf30ae7e022ed
SHA512 d24dcd18188176f796b92d150b30d3b99c03654257fe48019308cca5ebb062c7312047fec43e0fa6823ff4ea29649c4f8db61f2ba950881df8a52ec15b662b85

C:\refBrokerDhcp\eop7KwarhdN0r.bat

MD5 65cbca0f14030e37f4536942be742fed
SHA1 1823a610cfb0945e0e234651d4045931aa241ba5
SHA256 7d881d8c2a5a8756b85abe067e24efdc7c657d1af28ba1132d0e9ae443941d5d
SHA512 87eb63d67e28c0f42c1b89c631c4573d0d8f9dc145f3720d26d3af8f7dc76e7d105b0598fe398f9e73d95e814301678097be811977c184ea2e101d4e0e8cc044

C:\refBrokerDhcp\msbrowser.exe

MD5 3d428539f2cddf97abfe6586df2f2c1d
SHA1 e828475a8e5ea8db3854cb66f0102c6532a0a997
SHA256 58a180ba10aad7f5a7c9b86b2f93213fde5e2f4816393d7a19ddc9202bc1f7a4
SHA512 325d96a63e0ddec4bb2c4c9fafa28b38c6961af0f4c282763eb82677037a50971ac2770c8277a11a80d7853218cc560600c18f7d201f23057387e0a858d05ccc

memory/2200-12-0x00007FFBF20B3000-0x00007FFBF20B5000-memory.dmp

memory/2200-13-0x00000000002D0000-0x00000000003A6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tKvCd3mm0w.bat

MD5 4107ec216c41040becf6bef77a6801d7
SHA1 2554eb8fe971cc56cb96655af7fd3b77e5da24e6
SHA256 5144cb03f52535e7201c98a9c143b719595353b6c202e7fb605022a7521dc98c
SHA512 5e67cef2e1f0dabd6eefdb66c12e6045865d322e47af54f4523d062398599e443e0933c4b50035d313c60fee70bea4f0c78fa5be903f754d7a26bc9d510b448a