umbral | edbfb6dab0d96e3c95a6bdfbe15c338a85a55c66d01115094674ac9f0eb91b18

Analysis

max time kernel
16s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
11-08-2024 20:46

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General

Target

Wave.exe
Size

284KB
MD5

94859e013cc39676f0b539f75481a34a
SHA1

8b92d4aefc0bbfb8a145a7d709d03c2591280b33
SHA256

edbfb6dab0d96e3c95a6bdfbe15c338a85a55c66d01115094674ac9f0eb91b18
SHA512

a2fc0e7de1135d4573623804d7eadda97c7f59efb760008292547b75c51042dccf8e38ff102a93273de8141e43b9e053bc8416780b7d199a6281f83ce3e61a48
SSDEEP

6144:iloZM+rIkd8g+EtXHkv/iD45THRtxdT8e1mBzWibGEIZwT1GWVW:soZtL+EP85bbxtWqxoGf

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2220-1-0x0000000000CF0000-0x0000000000D3C000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2736	powershell.exe
1540	powershell.exe
2944	powershell.exe
2372	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Wave.exe

Deletes itself 1 IoCs

pid	Process
2388	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
7	discord.com
8	discord.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2388	cmd.exe
2192	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
908	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2192	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2220	Wave.exe
2736	powershell.exe
2944	powershell.exe
2372	powershell.exe
2632	powershell.exe
1540	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	Wave.exe
Token: SeIncreaseQuotaPrivilege	1728	wmic.exe
Token: SeSecurityPrivilege	1728	wmic.exe
Token: SeTakeOwnershipPrivilege	1728	wmic.exe
Token: SeLoadDriverPrivilege	1728	wmic.exe
Token: SeSystemProfilePrivilege	1728	wmic.exe
Token: SeSystemtimePrivilege	1728	wmic.exe
Token: SeProfSingleProcessPrivilege	1728	wmic.exe
Token: SeIncBasePriorityPrivilege	1728	wmic.exe
Token: SeCreatePagefilePrivilege	1728	wmic.exe
Token: SeBackupPrivilege	1728	wmic.exe
Token: SeRestorePrivilege	1728	wmic.exe
Token: SeShutdownPrivilege	1728	wmic.exe
Token: SeDebugPrivilege	1728	wmic.exe
Token: SeSystemEnvironmentPrivilege	1728	wmic.exe
Token: SeRemoteShutdownPrivilege	1728	wmic.exe
Token: SeUndockPrivilege	1728	wmic.exe
Token: SeManageVolumePrivilege	1728	wmic.exe
Token: 33	1728	wmic.exe
Token: 34	1728	wmic.exe
Token: 35	1728	wmic.exe
Token: SeIncreaseQuotaPrivilege	1728	wmic.exe
Token: SeSecurityPrivilege	1728	wmic.exe
Token: SeTakeOwnershipPrivilege	1728	wmic.exe
Token: SeLoadDriverPrivilege	1728	wmic.exe
Token: SeSystemProfilePrivilege	1728	wmic.exe
Token: SeSystemtimePrivilege	1728	wmic.exe
Token: SeProfSingleProcessPrivilege	1728	wmic.exe
Token: SeIncBasePriorityPrivilege	1728	wmic.exe
Token: SeCreatePagefilePrivilege	1728	wmic.exe
Token: SeBackupPrivilege	1728	wmic.exe
Token: SeRestorePrivilege	1728	wmic.exe
Token: SeShutdownPrivilege	1728	wmic.exe
Token: SeDebugPrivilege	1728	wmic.exe
Token: SeSystemEnvironmentPrivilege	1728	wmic.exe
Token: SeRemoteShutdownPrivilege	1728	wmic.exe
Token: SeUndockPrivilege	1728	wmic.exe
Token: SeManageVolumePrivilege	1728	wmic.exe
Token: 33	1728	wmic.exe
Token: 34	1728	wmic.exe
Token: 35	1728	wmic.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeDebugPrivilege	2372	powershell.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeIncreaseQuotaPrivilege	1996	wmic.exe
Token: SeSecurityPrivilege	1996	wmic.exe
Token: SeTakeOwnershipPrivilege	1996	wmic.exe
Token: SeLoadDriverPrivilege	1996	wmic.exe
Token: SeSystemProfilePrivilege	1996	wmic.exe
Token: SeSystemtimePrivilege	1996	wmic.exe
Token: SeProfSingleProcessPrivilege	1996	wmic.exe
Token: SeIncBasePriorityPrivilege	1996	wmic.exe
Token: SeCreatePagefilePrivilege	1996	wmic.exe
Token: SeBackupPrivilege	1996	wmic.exe
Token: SeRestorePrivilege	1996	wmic.exe
Token: SeShutdownPrivilege	1996	wmic.exe
Token: SeDebugPrivilege	1996	wmic.exe
Token: SeSystemEnvironmentPrivilege	1996	wmic.exe
Token: SeRemoteShutdownPrivilege	1996	wmic.exe
Token: SeUndockPrivilege	1996	wmic.exe
Token: SeManageVolumePrivilege	1996	wmic.exe
Token: 33	1996	wmic.exe
Token: 34	1996	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1728	2220	Wave.exe	29
PID 2220 wrote to memory of 1728	2220	Wave.exe	29
PID 2220 wrote to memory of 1728	2220	Wave.exe	29
PID 2220 wrote to memory of 2744	2220	Wave.exe	32
PID 2220 wrote to memory of 2744	2220	Wave.exe	32
PID 2220 wrote to memory of 2744	2220	Wave.exe	32
PID 2220 wrote to memory of 2736	2220	Wave.exe	34
PID 2220 wrote to memory of 2736	2220	Wave.exe	34
PID 2220 wrote to memory of 2736	2220	Wave.exe	34
PID 2220 wrote to memory of 2944	2220	Wave.exe	36
PID 2220 wrote to memory of 2944	2220	Wave.exe	36
PID 2220 wrote to memory of 2944	2220	Wave.exe	36
PID 2220 wrote to memory of 2372	2220	Wave.exe	38
PID 2220 wrote to memory of 2372	2220	Wave.exe	38
PID 2220 wrote to memory of 2372	2220	Wave.exe	38
PID 2220 wrote to memory of 2632	2220	Wave.exe	40
PID 2220 wrote to memory of 2632	2220	Wave.exe	40
PID 2220 wrote to memory of 2632	2220	Wave.exe	40
PID 2220 wrote to memory of 1996	2220	Wave.exe	42
PID 2220 wrote to memory of 1996	2220	Wave.exe	42
PID 2220 wrote to memory of 1996	2220	Wave.exe	42
PID 2220 wrote to memory of 2912	2220	Wave.exe	44
PID 2220 wrote to memory of 2912	2220	Wave.exe	44
PID 2220 wrote to memory of 2912	2220	Wave.exe	44
PID 2220 wrote to memory of 2928	2220	Wave.exe	46
PID 2220 wrote to memory of 2928	2220	Wave.exe	46
PID 2220 wrote to memory of 2928	2220	Wave.exe	46
PID 2220 wrote to memory of 1540	2220	Wave.exe	48
PID 2220 wrote to memory of 1540	2220	Wave.exe	48
PID 2220 wrote to memory of 1540	2220	Wave.exe	48
PID 2220 wrote to memory of 908	2220	Wave.exe	50
PID 2220 wrote to memory of 908	2220	Wave.exe	50
PID 2220 wrote to memory of 908	2220	Wave.exe	50
PID 2220 wrote to memory of 2388	2220	Wave.exe	52
PID 2220 wrote to memory of 2388	2220	Wave.exe	52
PID 2220 wrote to memory of 2388	2220	Wave.exe	52
PID 2388 wrote to memory of 2192	2388	cmd.exe	54
PID 2388 wrote to memory of 2192	2388	cmd.exe	54
PID 2388 wrote to memory of 2192	2388	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2744	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Wave.exe
"C:\Users\Admin\AppData\Local\Temp\Wave.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1728
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Wave.exe"
  2⤵
  - Views/modifies file attributes
  PID:2744
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Wave.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2736
- 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
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2944
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2372
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2912
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2928
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1540
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:908
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Wave.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c3a04efed2c3185119ce0feb8f52be96

SHA1
e2a5eafedcd6dbbc3fd0226094676a2f790cce8b

SHA256
ff7bcdb9e515a5a5ccd4ce36fbcd5403bc73114105f96a835c76b7a9d40eab9e

SHA512
a9e3dc4884710218113a7b382dc5527035bfd4c09964d8c20b8f87fcb91bfa5270a080e25f8dbb689fc568f0505cd012188938dff959d5f6becf526173a29cf7

Download Submit
memory/1540-44-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/1540-45-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2220-0-0x000007FEF6663000-0x000007FEF6664000-memory.dmp

Filesize
4KB

Download
memory/2220-1-0x0000000000CF0000-0x0000000000D3C000-memory.dmp

Filesize
304KB

Download
memory/2220-2-0x000007FEF6660000-0x000007FEF704C000-memory.dmp

Filesize
9.9MB

Download
memory/2220-49-0x000007FEF6660000-0x000007FEF704C000-memory.dmp

Filesize
9.9MB

Download
memory/2736-7-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2736-8-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/2944-14-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/2944-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download