Malware Analysis Report

2024-10-10 10:00

Sample ID 240623-n471astbrl
Target Launcher.exe
SHA256 ef28a317d8c84f3dafac9ad461c151f43bbc65725b119cb1ed260ae174a1c10d
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

ef28a317d8c84f3dafac9ad461c151f43bbc65725b119cb1ed260ae174a1c10d

Threat Level: Known bad

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

Malicious Activity Summary

umbral execution spyware stealer

Umbral family

Detect Umbral payload

Umbral

Drops file in Drivers directory

Command and Scripting Interpreter: PowerShell

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Detects videocard installed

Suspicious use of AdjustPrivilegeToken

Views/modifies file attributes

Runs ping.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-23 11:58

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 11:58

Reported

2024-06-23 12:00

Platform

win11-20240611-en

Max time kernel

91s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Launcher.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\Launcher.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\Launcher.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 4712 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 3880 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\SYSTEM32\attrib.exe
PID 4712 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\SYSTEM32\attrib.exe
PID 4712 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 4500 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 4500 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 1084 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 4156 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 380 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 380 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 4032 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 4032 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 1240 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4712 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 2388 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\System32\Wbem\wmic.exe
PID 4712 wrote to memory of 3836 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\SYSTEM32\cmd.exe
PID 4712 wrote to memory of 3836 N/A C:\Users\Admin\AppData\Local\Temp\Launcher.exe C:\Windows\SYSTEM32\cmd.exe
PID 3836 wrote to memory of 1916 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\PING.EXE
PID 3836 wrote to memory of 1916 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\Launcher.exe

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

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

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

C:\Windows\system32\PING.EXE

ping localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 gstatic.com udp
GB 172.217.16.227:443 gstatic.com tcp
US 208.95.112.1:80 ip-api.com tcp
US 208.95.112.1:80 ip-api.com tcp
US 162.159.136.232:443 discord.com tcp
NL 52.111.243.29:443 tcp

Files

memory/4712-0-0x00007FFF45B73000-0x00007FFF45B75000-memory.dmp

memory/4712-1-0x000002BB249E0000-0x000002BB24A62000-memory.dmp

memory/4712-2-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/2568-3-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/2568-6-0x0000014A6A370000-0x0000014A6A392000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kx1bpdfb.fxu.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2568-13-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/2568-14-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

memory/2568-17-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp

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

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

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

MD5 aa4f31835d07347297d35862c9045f4a
SHA1 83e728008935d30f98e5480fba4fbccf10cefb05
SHA256 99c83bc5c531e49d4240700142f3425aba74e18ebcc23556be32238ffde9cce0
SHA512 ec3a4bee8335007b8753ae8ac42287f2b3bcbb258f7fc3fb15c9f8d3e611cb9bf6ae2d3034953286a34f753e9ec33f7495e064bab0e8c7fcedd75d6e5eb66629

memory/4712-31-0x000002BB3F200000-0x000002BB3F276000-memory.dmp

memory/4712-32-0x000002BB3F320000-0x000002BB3F370000-memory.dmp

memory/4712-33-0x000002BB3F170000-0x000002BB3F18E000-memory.dmp

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

MD5 6bddc96a32b9ed8fc70b141ccf4a39b2
SHA1 0f33c0699da40a5eadcec646791cf21cdb0dd7c6
SHA256 cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132
SHA512 e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6

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

MD5 7332074ae2b01262736b6fbd9e100dac
SHA1 22f992165065107cc9417fa4117240d84414a13c
SHA256 baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa
SHA512 4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

memory/4712-68-0x000002BB3F1B0000-0x000002BB3F1BA000-memory.dmp

memory/4712-69-0x000002BB3F1E0000-0x000002BB3F1F2000-memory.dmp

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

MD5 d6d65459c4042d1f234aa663336114ab
SHA1 3eb63fb84b26c4ff8573039035f2dfd10fd410a4
SHA256 1b099a8a877af813ab178c4a2a0bebb0ab60a4da9e27f275cf4711dd648dab02
SHA512 56f54bdfc5352aa06dbf5b73bfa6139a5711599cdc2f904e85121b2b95b204e5f7bf19bc674174ae7236c35d41781d09463c1e9605ea24ff78772ec49fbef114

memory/4712-88-0x00007FFF45B70000-0x00007FFF46632000-memory.dmp