Malware Analysis Report

2024-10-24 18:40

Sample ID 211024-srmaaafdck
Target b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7
SHA256 b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7
Tags
d58b3b69acc48f82eaa82076f97763d4 blackmatter persistence ransomware suricata
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7

Threat Level: Known bad

The file b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7 was found to be: Known bad.

Malicious Activity Summary

d58b3b69acc48f82eaa82076f97763d4 blackmatter persistence ransomware suricata

suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)

Blackmatter family

BlackMatter Ransomware

suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)

Modifies extensions of user files

Sets service image path in registry

Enumerates connected drives

Sets desktop wallpaper using registry

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Modifies data under HKEY_USERS

Modifies Control Panel

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-10-24 15:21

Signatures

Blackmatter family

blackmatter

Analysis: behavioral1

Detonation Overview

Submitted

2021-10-24 15:21

Reported

2021-10-24 15:24

Platform

win11

Max time kernel

147s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe"

Signatures

BlackMatter Ransomware

ransomware blackmatter

suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)

suricata

suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)

suricata

Sets service image path in registry

persistence

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-257790753-2419383948-818201544-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\f5yX7OyXn.bmp" C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-257790753-2419383948-818201544-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\f5yX7OyXn.bmp" C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\WindowsUpdate.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log C:\Windows\system32\svchost.exe N/A
File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb C:\Windows\system32\svchost.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\system32\svchost.exe N/A
Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\system32\svchost.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-257790753-2419383948-818201544-1000\Control Panel\International C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Key created \REGISTRY\USER\S-1-5-21-257790753-2419383948-818201544-1000\Control Panel\Desktop C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-257790753-2419383948-818201544-1000\Control Panel\Desktop\WallpaperStyle = "10" C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs C:\Windows\System32\WaaSMedicAgent.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates C:\Windows\system32\svchost.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates C:\Windows\system32\svchost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\WaaSMedicAgent.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\WaaSMedicAgent.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\WaaSMedicAgent.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\WaaSMedicAgent.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\system32\svchost.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\system32\svchost.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1496 wrote to memory of 1880 N/A C:\Windows\system32\svchost.exe C:\Windows\uus\AMD64\MoUsoCoreWorker.exe
PID 1496 wrote to memory of 1880 N/A C:\Windows\system32\svchost.exe C:\Windows\uus\AMD64\MoUsoCoreWorker.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe

"C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe"

C:\Windows\System32\WaaSMedicAgent.exe

C:\Windows\System32\WaaSMedicAgent.exe b34634922f00db267e803f4858beb050 GEwTR/2hiEy0A5uai15Dxg.0.1.0.3.0

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k netsvcs -p -s UsoSvc

C:\Windows\uus\AMD64\MoUsoCoreWorker.exe

C:\Windows\uus\AMD64\MoUsoCoreWorker.exe

C:\Windows\System32\WaaSMedicAgent.exe

C:\Windows\System32\WaaSMedicAgent.exe b34634922f00db267e803f4858beb050 GEwTR/2hiEy0A5uai15Dxg.0.1.0.3.0

Network

Country Destination Domain Proto
US 8.8.8.8:53 slscr.update.microsoft.com udp
US 52.242.101.226:443 slscr.update.microsoft.com tcp
US 8.8.8.8:53 fe3cr.delivery.mp.microsoft.com udp
IE 20.54.89.15:443 fe3cr.delivery.mp.microsoft.com tcp
US 52.242.101.226:443 slscr.update.microsoft.com tcp
US 52.242.101.226:443 slscr.update.microsoft.com tcp
NL 51.124.78.146:443 settings-win.data.microsoft.com tcp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
NL 51.124.78.146:443 settings-win.data.microsoft.com tcp
NL 20.101.57.9:123 time.windows.com udp
N/A 127.0.0.1:5985 tcp
IE 20.54.89.15:443 fe3cr.delivery.mp.microsoft.com tcp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
NL 51.124.78.146:443 settings-win.data.microsoft.com tcp
US 52.152.110.14:443 slscr.update.microsoft.com tcp
IE 20.54.110.119:443 tsfe.trafficshaping.dsp.mp.microsoft.com tcp
NL 20.86.173.234:80 tcp
US 93.184.220.29:80 tcp

Files

memory/1052-146-0x0000000003123000-0x0000000003125000-memory.dmp

memory/1052-147-0x0000000003120000-0x0000000003121000-memory.dmp

memory/2492-148-0x000001479BD20000-0x000001479BD30000-memory.dmp

memory/2492-149-0x000001479BDA0000-0x000001479BDB0000-memory.dmp

memory/2492-150-0x000001479E490000-0x000001479E494000-memory.dmp

memory/1880-151-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-10-24 15:21

Reported

2021-10-24 15:24

Platform

win10-en-20211014

Max time kernel

114s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe"

Signatures

BlackMatter Ransomware

ransomware blackmatter

suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)

suricata

suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)

suricata

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\DisablePop.tiff.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File renamed C:\Users\Admin\Pictures\SetRename.png => C:\Users\Admin\Pictures\SetRename.png.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File renamed C:\Users\Admin\Pictures\UnlockUnregister.png => C:\Users\Admin\Pictures\UnlockUnregister.png.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File opened for modification C:\Users\Admin\Pictures\UnlockUnregister.png.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File opened for modification C:\Users\Admin\Pictures\WriteRevoke.crw.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File opened for modification C:\Users\Admin\Pictures\DisablePop.tiff C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File renamed C:\Users\Admin\Pictures\DisablePop.tiff => C:\Users\Admin\Pictures\DisablePop.tiff.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File opened for modification C:\Users\Admin\Pictures\SetRename.png.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
File renamed C:\Users\Admin\Pictures\WriteRevoke.crw => C:\Users\Admin\Pictures\WriteRevoke.crw.WRLMMTHME C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\WRLMMTHME.bmp" C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\WRLMMTHME.bmp" C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\International C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Control Panel\Desktop\WallpaperStyle = "10" C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe

"C:\Users\Admin\AppData\Local\Temp\b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

Country Destination Domain Proto
US 52.109.8.19:443 tcp
US 8.8.8.8:53 mojobiden.com udp
US 8.8.8.8:53 nowautomation.com udp
US 8.8.8.8:53 time.windows.com udp
NL 20.101.57.9:123 time.windows.com udp
US 8.8.8.8:53 mojobiden.com udp
US 8.8.8.8:53 nowautomation.com udp

Files

memory/2684-115-0x0000000000E00000-0x0000000000F4A000-memory.dmp

memory/2684-116-0x0000000000E00000-0x0000000000F4A000-memory.dmp