Malware Analysis Report

2024-10-10 10:00

Sample ID 240623-rn92haxfjq
Target Umbral.exe
SHA256 185cff1b051d1389bc9cc2c50a4988e32f78f476696f61a0ae6fcd0bc33628af
Tags
umbral execution 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

185cff1b051d1389bc9cc2c50a4988e32f78f476696f61a0ae6fcd0bc33628af

Threat Level: Known bad

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

Malicious Activity Summary

umbral execution spyware stealer

Umbral

Umbral family

Detect Umbral payload

Command and Scripting Interpreter: PowerShell

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

Detects videocard installed

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-23 14:21

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

2024-06-23 14:21

Reported

2024-06-23 14:24

Platform

win10v2004-20240611-en

Max time kernel

145s

Max time network

139s

Command Line

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

Signatures

Detect Umbral payload

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

Umbral

stealer umbral

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

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\Umbral.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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Umbral.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 2672 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 4068 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 3624 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 3624 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 4172 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 4172 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 4888 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 4888 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 4440 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 4392 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 4392 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2672 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe
PID 2672 wrote to memory of 2860 N/A C:\Users\Admin\AppData\Local\Temp\Umbral.exe C:\Windows\System32\Wbem\wmic.exe

Processes

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

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

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

"wmic.exe" csproduct get uuid

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 172.217.16.227:443 gstatic.com tcp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 227.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 discord.com udp
US 162.159.136.232:443 discord.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 232.136.159.162.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.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 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 48.192.11.51.in-addr.arpa udp

Files

memory/2672-0-0x0000012811110000-0x0000012811150000-memory.dmp

memory/2672-1-0x00007FFA904C3000-0x00007FFA904C5000-memory.dmp

memory/2672-2-0x00007FFA904C0000-0x00007FFA90F81000-memory.dmp

memory/4068-3-0x00007FFA904C0000-0x00007FFA90F81000-memory.dmp

memory/4068-4-0x00007FFA904C0000-0x00007FFA90F81000-memory.dmp

memory/4068-10-0x0000021C58120000-0x0000021C58142000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fkpnz052.a4c.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4068-15-0x00007FFA904C0000-0x00007FFA90F81000-memory.dmp

memory/4068-18-0x00007FFA904C0000-0x00007FFA90F81000-memory.dmp

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

MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

MD5 cadef9abd087803c630df65264a6c81c
SHA1 babbf3636c347c8727c35f3eef2ee643dbcc4bd2
SHA256 cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438
SHA512 7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

memory/2672-33-0x000001282B870000-0x000001282B8E6000-memory.dmp

memory/2672-34-0x000001282B8F0000-0x000001282B940000-memory.dmp

memory/2672-35-0x000001282B960000-0x000001282B97E000-memory.dmp

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

MD5 1a58f982c18490e622e00d4eb75ace5a
SHA1 60c30527b74659ecf09089a5a7c02a1df9a71b65
SHA256 4b7f800c0dea209162cc86627983993127eb20e3f8616646c41cb3ce15d9b39d
SHA512 ddab516a967783c5951717853aa5b3ef6dd5b442db50092888b2e7f3179fc68120fcde69a08d6ab280740eaadb6eadfc758c3118b52706f869e48ac1aebda480

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

MD5 88be3bc8a7f90e3953298c0fdbec4d72
SHA1 f4969784ad421cc80ef45608727aacd0f6bf2e4b
SHA256 533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a
SHA512 4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

memory/2672-72-0x000001282B690000-0x000001282B69A000-memory.dmp

memory/2672-73-0x000001282B810000-0x000001282B822000-memory.dmp

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

MD5 f69437dfc5b7cb5d7422d4557c5193a1
SHA1 2ad54bbf836fa97a9386a6b251c5d769a6d2badb
SHA256 f91341354f99f965d4737a54743ca914531391e5c03005020ace74f8c536c0e0
SHA512 993fe382cbd8b978e06e6e5870757959b6944d70a4e6bf97420039b20dd6f1a566545cc271b28bcb5795205d4e8ea6ce1ef4effe6ccd45d909c2560e867ccc3c

memory/2672-93-0x000001282BB20000-0x000001282BCC9000-memory.dmp

memory/2672-94-0x00007FFA904C0000-0x00007FFA90F81000-memory.dmp