Malware Analysis Report

2025-06-16 00:04

Sample ID 241106-bdm6zs1nhy
Target 74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN
SHA256 74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcd
Tags
evasion persistence ransomware
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

74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcd

Threat Level: Known bad

The file 74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN was found to be: Known bad.

Malicious Activity Summary

evasion persistence ransomware

Modifies WinLogon for persistence

Disables Task Manager via registry modification

Disables cmd.exe use via registry modification

Checks computer location settings

Sets desktop wallpaper using registry

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious behavior: CmdExeWriteProcessMemorySpam

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-06 01:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-06 01:01

Reported

2024-11-06 01:03

Platform

win7-20241010-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty" C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Disables Task Manager via registry modification

evasion

Disables cmd.exe use via registry modification

evasion
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "1" C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Control Panel\Desktop\Wallpaper C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\taskkill.exe N/A

Suspicious behavior: CmdExeWriteProcessMemorySpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\system32\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2000 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 1980 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 568 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 568 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 568 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 2432 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 2000 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 2000 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 2000 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 2000 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 2000 wrote to memory of 2412 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 1980 wrote to memory of 2780 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 1980 wrote to memory of 2780 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 1980 wrote to memory of 2780 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 568 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 568 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 568 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 568 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 568 wrote to memory of 2876 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2000 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\rundll32.exe
PID 2000 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\rundll32.exe
PID 2000 wrote to memory of 2228 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\rundll32.exe
PID 2432 wrote to memory of 2892 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2432 wrote to memory of 2892 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2432 wrote to memory of 2892 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe

"C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C taskkill /F /IM rundll32.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C regsvr32 user32.dll

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C rundll32 user32.dll

C:\Windows\System32\regsvr32.exe

"C:\Windows\System32\regsvr32.exe" user32.dll

C:\Windows\system32\taskkill.exe

taskkill /F /IM rundll32.exe

C:\Windows\system32\regsvr32.exe

regsvr32 user32.dll

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" user32.dll

C:\Windows\system32\rundll32.exe

rundll32 user32.dll

Network

N/A

Files

memory/2000-0-0x000007FEF611E000-0x000007FEF611F000-memory.dmp

memory/2000-1-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

memory/2000-2-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

memory/2000-3-0x000007FEF611E000-0x000007FEF611F000-memory.dmp

memory/2000-4-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-06 01:01

Reported

2024-11-06 01:03

Platform

win10v2004-20241007-en

Max time kernel

99s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty" C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Disables Task Manager via registry modification

evasion

Disables cmd.exe use via registry modification

evasion
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "1" C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\Desktop\Wallpaper C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\system32\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1952 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 1952 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 1952 wrote to memory of 2072 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 1952 wrote to memory of 2072 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 1952 wrote to memory of 4496 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 1952 wrote to memory of 4496 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\cmd.exe
PID 1952 wrote to memory of 4300 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 1952 wrote to memory of 4300 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\regsvr32.exe
PID 1952 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\rundll32.exe
PID 1952 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe C:\Windows\System32\rundll32.exe
PID 2428 wrote to memory of 3756 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 2428 wrote to memory of 3756 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\taskkill.exe
PID 2072 wrote to memory of 4812 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 2072 wrote to memory of 4812 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 4496 wrote to memory of 2968 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\rundll32.exe
PID 4496 wrote to memory of 2968 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe

"C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C taskkill /F /IM rundll32.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C regsvr32 user32.dll

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C rundll32 user32.dll

C:\Windows\System32\regsvr32.exe

"C:\Windows\System32\regsvr32.exe" user32.dll

C:\Windows\System32\rundll32.exe

"C:\Windows\System32\rundll32.exe" user32.dll

C:\Windows\system32\taskkill.exe

taskkill /F /IM rundll32.exe

C:\Windows\system32\regsvr32.exe

regsvr32 user32.dll

C:\Windows\system32\rundll32.exe

rundll32 user32.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 105.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp

Files

memory/1952-0-0x00007FFCED675000-0x00007FFCED676000-memory.dmp

memory/1952-1-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp

memory/1952-2-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp

memory/1952-3-0x00007FFCED675000-0x00007FFCED676000-memory.dmp

memory/1952-4-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp

memory/1952-6-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp