Malware Analysis Report

2024-10-10 13:08

Sample ID 240617-nmp36asglj
Target 4b4fbd1058bad316a931918769027276.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 4b4fbd1058bad316a931918769027276.exe was found to be: Known bad.

Malicious Activity Summary

rat dcrat infostealer

Dcrat family

DcRat

DCRat payload

Process spawned unexpected child process

DCRat payload

Executes dropped EXE

Checks computer location settings

Drops file in Windows directory

Drops file in Program Files directory

Unsigned PE

Enumerates physical storage devices

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-17 11:31

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

2024-06-17 11:31

Reported

2024-06-17 11:33

Platform

win7-20240508-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.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:\Windows\IME\es-ES\lsm.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Windows Defender\en-US\Idle.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files (x86)\Windows Defender\en-US\6ccacd8608530f C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files (x86)\MSBuild\csrss.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File opened for modification C:\Program Files\Windows Photo Viewer\it-IT\Idle.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files\Windows Photo Viewer\it-IT\6ccacd8608530f C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\csrss.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files (x86)\Microsoft Sync Framework\v1.0\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files (x86)\MSBuild\886983d96e3d3e C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files\Microsoft Office\Office14\1033\lsm.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files\Microsoft Office\Office14\1033\101b941d020240 C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Program Files\Windows Photo Viewer\it-IT\Idle.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\TAPI\56085415360792 C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Windows\IME\es-ES\lsm.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Windows\IME\es-ES\101b941d020240 C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Windows\ShellNew\taskhost.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Windows\ShellNew\b75386f1303e64 C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Windows\schemas\TSWorkSpace\dwm.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
File created C:\Windows\TAPI\wininit.exe C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
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:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\IME\es-ES\lsm.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe

"C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Photo Viewer\it-IT\Idle.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files\Windows Photo Viewer\it-IT\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Photo Viewer\it-IT\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\Local Settings\csrss.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 13 /tr "'C:\Users\All Users\Favorites\smss.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Users\All Users\Favorites\smss.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\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\csrss.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\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\wininit.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\MSBuild\csrss.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Windows\TAPI\wininit.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Windows\TAPI\wininit.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 7 /tr "'C:\Program Files\Microsoft Office\Office14\1033\lsm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office\Office14\1033\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 5 /tr "'C:\Program Files\Microsoft Office\Office14\1033\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 8 /tr "'C:\Windows\IME\es-ES\lsm.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Windows\IME\es-ES\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "lsml" /sc MINUTE /mo 6 /tr "'C:\Windows\IME\es-ES\lsm.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Defender\en-US\Idle.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\en-US\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Defender\en-US\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'C:\Recovery\50341a82-0d88-11ef-8a7e-5aba25856535\Idle.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\50341a82-0d88-11ef-8a7e-5aba25856535\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Recovery\50341a82-0d88-11ef-8a7e-5aba25856535\Idle.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 8 /tr "'C:\Windows\ShellNew\taskhost.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 5 /tr "'C:\Windows\ShellNew\taskhost.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "4b4fbd1058bad316a9319187690272764" /sc MINUTE /mo 8 /tr "'C:\Users\Public\Videos\Sample Videos\4b4fbd1058bad316a931918769027276.exe'" /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "4b4fbd1058bad316a931918769027276" /sc ONLOGON /tr "'C:\Users\Public\Videos\Sample Videos\4b4fbd1058bad316a931918769027276.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "4b4fbd1058bad316a9319187690272764" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Videos\Sample Videos\4b4fbd1058bad316a931918769027276.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Videos\spoolsv.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Videos\spoolsv.exe'" /rl HIGHEST /f

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\dllhost.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\dllhost.exe'" /rl HIGHEST /f

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Cx8CK313yZ.bat"

C:\Windows\system32\w32tm.exe

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

C:\Windows\IME\es-ES\lsm.exe

"C:\Windows\IME\es-ES\lsm.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 cz61028.tw1.ru udp
US 8.8.8.8:53 cz61028.tw1.ru udp

Files

memory/1580-0-0x000007FEF55F3000-0x000007FEF55F4000-memory.dmp

memory/1580-1-0x0000000000FE0000-0x00000000010DC000-memory.dmp

memory/1580-2-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

memory/1580-3-0x00000000001C0000-0x00000000001D2000-memory.dmp

memory/1580-4-0x00000000005F0000-0x00000000005FC000-memory.dmp

C:\MSOCache\All Users\wininit.exe

MD5 4b4fbd1058bad316a931918769027276
SHA1 598bbff84cfde0d002feeefd19dae6a20fcfcbf8
SHA256 f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550
SHA512 108c4390dc8944f43579ff8c052207a441f036de68e99a6c41cb28f9d71a6a751e10f918b873dc177ba0a241b402980aed5c3a21003bce250d62fc3afc1e2344

C:\Users\Admin\AppData\Local\Temp\Cx8CK313yZ.bat

MD5 e1f0eaa10207ee5e1d8df6470f42c155
SHA1 47be0c4fb53c323f6fc669892078bf6504ab1ebc
SHA256 be78cfdb0e7cb20300a3fd2d11edb970c66b106d35cd15c11df8a79aecc40ff9
SHA512 91e578f14a3534668f8eee1f878571c5b2922d105d324e151976f8406583e97b66499242d31b2b71e34a182c75c4f5cfcfad731a99b0a4b19ffa295f04b10b73

memory/1580-40-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

memory/3060-43-0x0000000000AF0000-0x0000000000BEC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-17 11:31

Reported

2024-06-17 11:33

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.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

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-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\All Users\fontdrvhost.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
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

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\All Users\fontdrvhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe N/A
Token: SeDebugPrivilege N/A C:\Users\All Users\fontdrvhost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe

"C:\Users\Admin\AppData\Local\Temp\4b4fbd1058bad316a931918769027276.exe"

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\fontdrvhost.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 5 /tr "'C:\Users\Default User\SearchApp.exe'" /f

C:\Windows\system32\schtasks.exe

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

C:\Windows\system32\schtasks.exe

schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 9 /tr "'C:\Users\Default User\SearchApp.exe'" /rl HIGHEST /f

C:\Users\All Users\fontdrvhost.exe

"C:\Users\All Users\fontdrvhost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 88.221.83.219:443 www.bing.com tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 219.83.221.88.in-addr.arpa udp
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
US 8.8.8.8:53 121.96.53.92.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa 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
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 85.65.42.20.in-addr.arpa udp

Files

memory/4836-0-0x00007FFB6B643000-0x00007FFB6B645000-memory.dmp

memory/4836-1-0x0000000000780000-0x000000000087C000-memory.dmp

memory/4836-2-0x0000000001050000-0x0000000001062000-memory.dmp

memory/4836-3-0x00007FFB6B640000-0x00007FFB6C101000-memory.dmp

memory/4836-4-0x000000001C020000-0x000000001C548000-memory.dmp

memory/4836-5-0x0000000001060000-0x000000000106C000-memory.dmp

C:\ProgramData\fontdrvhost.exe

MD5 4b4fbd1058bad316a931918769027276
SHA1 598bbff84cfde0d002feeefd19dae6a20fcfcbf8
SHA256 f139ad1c83bf27b6ca402476829a81f311f19b98b655bbaca32ef3c8c5aa7550
SHA512 108c4390dc8944f43579ff8c052207a441f036de68e99a6c41cb28f9d71a6a751e10f918b873dc177ba0a241b402980aed5c3a21003bce250d62fc3afc1e2344

memory/4836-21-0x00007FFB6B640000-0x00007FFB6C101000-memory.dmp

memory/856-22-0x00000000030B0000-0x00000000030C2000-memory.dmp