Malware Analysis Report

2024-10-10 10:08

Sample ID 240415-s3a2dscb9s
Target ClientBetaNew.exe
SHA256 499282fecf90d5dcdf2b01ca4413c37477ec17b6068b43300dfeaefa1fb50978
Tags
umbral spyware stealer
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 Overview

score
10/10

SHA256

499282fecf90d5dcdf2b01ca4413c37477ec17b6068b43300dfeaefa1fb50978

Threat Level: Known bad

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

Malicious Activity Summary

umbral spyware stealer

Umbral

Detect Umbral payload

Umbral family

Drops file in Drivers directory

Reads user/profile data of web browsers

Looks up external IP address via web service

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Runs ping.exe

Suspicious behavior: EnumeratesProcesses

Detects videocard installed

Views/modifies file attributes

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 15:38

Signatures

Detect Umbral payload

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

Umbral family

umbral

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 15:38

Reported

2024-04-15 15:50

Platform

win11-20240412-en

Max time kernel

79s

Max time network

85s

Command Line

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

Signatures

Detect Umbral payload

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

Umbral

stealer umbral

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe N/A

Reads user/profile data of web browsers

spyware stealer

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Detects videocard installed

Description Indicator Process Target
N/A N/A C:\Windows\System32\Wbem\wmic.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 33 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 34 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 35 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: 36 N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemtimePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeSystemEnvironmentPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeRemoteShutdownPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeUndockPrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A
Token: SeManageVolumePrivilege N/A C:\Windows\System32\Wbem\wmic.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 704 wrote to memory of 2000 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 2000 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 5028 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\SYSTEM32\attrib.exe
PID 704 wrote to memory of 5028 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\SYSTEM32\attrib.exe
PID 704 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 4916 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 4168 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 4168 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 3560 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 2368 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 2368 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 2392 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 2524 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 704 wrote to memory of 3168 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 3168 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\System32\Wbem\wmic.exe
PID 704 wrote to memory of 1592 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\SYSTEM32\cmd.exe
PID 704 wrote to memory of 1592 N/A C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe C:\Windows\SYSTEM32\cmd.exe
PID 1592 wrote to memory of 3672 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\PING.EXE
PID 1592 wrote to memory of 3672 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\PING.EXE

Views/modifies file attributes

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\attrib.exe N/A

Processes

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

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

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" csproduct get uuid

C:\Windows\SYSTEM32\attrib.exe

"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe'

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" os get Caption

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" computersystem get totalphysicalmemory

C:\Windows\System32\Wbem\wmic.exe

"wmic.exe" csproduct get uuid

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER

C:\Windows\System32\Wbem\wmic.exe

"wmic" path win32_VideoController get name

C:\Windows\SYSTEM32\cmd.exe

"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\ClientBetaNew.exe" && pause

C:\Windows\system32\PING.EXE

ping localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 142.250.200.35:443 gstatic.com tcp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 208.95.112.1:80 ip-api.com tcp
US 162.159.128.233:443 discord.com tcp
US 52.111.227.13:443 tcp

Files

memory/704-0-0x000001AF0AE10000-0x000001AF0AE50000-memory.dmp

memory/704-1-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/704-2-0x000001AF25410000-0x000001AF25420000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1aesk5s0.o4f.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2836-8-0x00000146DB2E0000-0x00000146DB302000-memory.dmp

memory/2836-13-0x00000146DB2A0000-0x00000146DB2B0000-memory.dmp

memory/2836-12-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/2836-14-0x00000146DB2A0000-0x00000146DB2B0000-memory.dmp

memory/2836-15-0x00000146DB2A0000-0x00000146DB2B0000-memory.dmp

memory/2836-18-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

MD5 627073ee3ca9676911bee35548eff2b8
SHA1 4c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA256 85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA512 3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

memory/4916-20-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/4916-21-0x0000025D7F8B0000-0x0000025D7F8C0000-memory.dmp

memory/4916-22-0x0000025D7F8B0000-0x0000025D7F8C0000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 1a9fa92a4f2e2ec9e244d43a6a4f8fb9
SHA1 9910190edfaccece1dfcc1d92e357772f5dae8f7
SHA256 0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888
SHA512 5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

memory/4916-32-0x0000025D7F8B0000-0x0000025D7F8C0000-memory.dmp

memory/4916-33-0x0000025D7F8B0000-0x0000025D7F8C0000-memory.dmp

memory/4916-35-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/704-38-0x000001AF255D0000-0x000001AF25646000-memory.dmp

memory/704-39-0x000001AF25580000-0x000001AF255D0000-memory.dmp

memory/704-40-0x000001AF25550000-0x000001AF2556E000-memory.dmp

memory/2788-43-0x0000023E6B460000-0x0000023E6B470000-memory.dmp

memory/2788-42-0x0000023E6B460000-0x0000023E6B470000-memory.dmp

memory/2788-41-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 45741c307af2576c6437c5fdb24ef9ce
SHA1 a6ba7a7705db14ac29a18a98dd7deb4cc759c3bf
SHA256 7887859f7179e194ff9b78f8d8fa3830790110a01597f21ff48c84cd935e49d2
SHA512 39fdc5931563cbf826e8b643b5f0dcdf45bb6f95a8eeb460499257ca41b3dbee4c692eaacc3fd33bddf4b6ff0c828981ed7e9cd080007bbb9f0b28e7d0d66941

memory/704-65-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/2788-66-0x0000023E6B460000-0x0000023E6B470000-memory.dmp

memory/2788-68-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/4168-70-0x0000028BD9330000-0x0000028BD9340000-memory.dmp

memory/4168-69-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/4168-71-0x0000028BD9330000-0x0000028BD9340000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 7332074ae2b01262736b6fbd9e100dac
SHA1 22f992165065107cc9417fa4117240d84414a13c
SHA256 baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa
SHA512 4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

memory/4168-81-0x0000028BD9330000-0x0000028BD9340000-memory.dmp

memory/4168-83-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/704-86-0x000001AF25690000-0x000001AF256A2000-memory.dmp

memory/704-85-0x000001AF25660000-0x000001AF2566A000-memory.dmp

memory/2524-94-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/2524-98-0x0000022A7DE20000-0x0000022A7DE30000-memory.dmp

memory/2524-99-0x0000022A7DE20000-0x0000022A7DE30000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 38ecc5b95c11e5a77558753102979c51
SHA1 c0759b08ef377df9979d8835d8a7e464cd8eaf6b
SHA256 2eb69abe0af5a2fb5bb313533cef641e25016876b874353f7d737c7ad672c79e
SHA512 9bf4ce3bc097bdd0242bd105c936a9c9403d5ac83ec99e6a310591a7b8d26309485f3e0cdc4cba67c322f834c325a2b63a008adb078f3a3307094c4b68a48686

memory/2524-101-0x0000022A7DE20000-0x0000022A7DE30000-memory.dmp

memory/2524-103-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp

memory/704-108-0x00007FFD311F0000-0x00007FFD31CB2000-memory.dmp