umbral | 42441a6e6eefa60a69c49cc280d1faafa48e0a3bc8e6787c3248a0c610c48c64

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
09-09-2024 08:11

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General

Target

Patcher.exe
Size

292KB
MD5

40e407453b653751e0f3b6237500c362
SHA1

70c4819f3df236d816f01e884b88c683c87de8a7
SHA256

42441a6e6eefa60a69c49cc280d1faafa48e0a3bc8e6787c3248a0c610c48c64
SHA512

8298c7ef17583af41230b9a8a2d8cb69033f97a6a5ea19804f40e7d95c22af12feaef3b3a8f609320f72a85d323127aea6bdb8d493303ffd9c31bf14998737bb
SSDEEP

6144:zloZMArIkd8g+EtXHkv/iD4Na1Q2AmB5K7/Cwhl0fjb8e1moirBcG95S:xoZHL+EP8Na1Q2AmB5K7/Cwhl0/arxK

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2756-1-0x0000000000140000-0x0000000000190000-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
2772	powershell.exe
2180	powershell.exe
1388	powershell.exe
2864	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Patcher.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
8	discord.com
9	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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2016	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2772	powershell.exe
2864	powershell.exe
2180	powershell.exe
2984	powershell.exe
1388	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	Patcher.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeDebugPrivilege	2984	powershell.exe
Token: SeIncreaseQuotaPrivilege	2632	wmic.exe
Token: SeSecurityPrivilege	2632	wmic.exe
Token: SeTakeOwnershipPrivilege	2632	wmic.exe
Token: SeLoadDriverPrivilege	2632	wmic.exe
Token: SeSystemProfilePrivilege	2632	wmic.exe
Token: SeSystemtimePrivilege	2632	wmic.exe
Token: SeProfSingleProcessPrivilege	2632	wmic.exe
Token: SeIncBasePriorityPrivilege	2632	wmic.exe
Token: SeCreatePagefilePrivilege	2632	wmic.exe
Token: SeBackupPrivilege	2632	wmic.exe
Token: SeRestorePrivilege	2632	wmic.exe
Token: SeShutdownPrivilege	2632	wmic.exe
Token: SeDebugPrivilege	2632	wmic.exe
Token: SeSystemEnvironmentPrivilege	2632	wmic.exe
Token: SeRemoteShutdownPrivilege	2632	wmic.exe
Token: SeUndockPrivilege	2632	wmic.exe
Token: SeManageVolumePrivilege	2632	wmic.exe
Token: 33	2632	wmic.exe
Token: 34	2632	wmic.exe
Token: 35	2632	wmic.exe
Token: SeIncreaseQuotaPrivilege	2632	wmic.exe
Token: SeSecurityPrivilege	2632	wmic.exe
Token: SeTakeOwnershipPrivilege	2632	wmic.exe
Token: SeLoadDriverPrivilege	2632	wmic.exe
Token: SeSystemProfilePrivilege	2632	wmic.exe
Token: SeSystemtimePrivilege	2632	wmic.exe
Token: SeProfSingleProcessPrivilege	2632	wmic.exe
Token: SeIncBasePriorityPrivilege	2632	wmic.exe
Token: SeCreatePagefilePrivilege	2632	wmic.exe
Token: SeBackupPrivilege	2632	wmic.exe
Token: SeRestorePrivilege	2632	wmic.exe
Token: SeShutdownPrivilege	2632	wmic.exe
Token: SeDebugPrivilege	2632	wmic.exe
Token: SeSystemEnvironmentPrivilege	2632	wmic.exe
Token: SeRemoteShutdownPrivilege	2632	wmic.exe
Token: SeUndockPrivilege	2632	wmic.exe
Token: SeManageVolumePrivilege	2632	wmic.exe
Token: 33	2632	wmic.exe
Token: 34	2632	wmic.exe
Token: 35	2632	wmic.exe
Token: SeIncreaseQuotaPrivilege	348	wmic.exe
Token: SeSecurityPrivilege	348	wmic.exe
Token: SeTakeOwnershipPrivilege	348	wmic.exe
Token: SeLoadDriverPrivilege	348	wmic.exe
Token: SeSystemProfilePrivilege	348	wmic.exe
Token: SeSystemtimePrivilege	348	wmic.exe
Token: SeProfSingleProcessPrivilege	348	wmic.exe
Token: SeIncBasePriorityPrivilege	348	wmic.exe
Token: SeCreatePagefilePrivilege	348	wmic.exe
Token: SeBackupPrivilege	348	wmic.exe
Token: SeRestorePrivilege	348	wmic.exe
Token: SeShutdownPrivilege	348	wmic.exe
Token: SeDebugPrivilege	348	wmic.exe
Token: SeSystemEnvironmentPrivilege	348	wmic.exe
Token: SeRemoteShutdownPrivilege	348	wmic.exe
Token: SeUndockPrivilege	348	wmic.exe
Token: SeManageVolumePrivilege	348	wmic.exe
Token: 33	348	wmic.exe
Token: 34	348	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 2772	2756	Patcher.exe	31
PID 2756 wrote to memory of 2772	2756	Patcher.exe	31
PID 2756 wrote to memory of 2772	2756	Patcher.exe	31
PID 2756 wrote to memory of 2864	2756	Patcher.exe	33
PID 2756 wrote to memory of 2864	2756	Patcher.exe	33
PID 2756 wrote to memory of 2864	2756	Patcher.exe	33
PID 2756 wrote to memory of 2180	2756	Patcher.exe	35
PID 2756 wrote to memory of 2180	2756	Patcher.exe	35
PID 2756 wrote to memory of 2180	2756	Patcher.exe	35
PID 2756 wrote to memory of 2984	2756	Patcher.exe	37
PID 2756 wrote to memory of 2984	2756	Patcher.exe	37
PID 2756 wrote to memory of 2984	2756	Patcher.exe	37
PID 2756 wrote to memory of 2632	2756	Patcher.exe	39
PID 2756 wrote to memory of 2632	2756	Patcher.exe	39
PID 2756 wrote to memory of 2632	2756	Patcher.exe	39
PID 2756 wrote to memory of 348	2756	Patcher.exe	42
PID 2756 wrote to memory of 348	2756	Patcher.exe	42
PID 2756 wrote to memory of 348	2756	Patcher.exe	42
PID 2756 wrote to memory of 2900	2756	Patcher.exe	44
PID 2756 wrote to memory of 2900	2756	Patcher.exe	44
PID 2756 wrote to memory of 2900	2756	Patcher.exe	44
PID 2756 wrote to memory of 1388	2756	Patcher.exe	46
PID 2756 wrote to memory of 1388	2756	Patcher.exe	46
PID 2756 wrote to memory of 1388	2756	Patcher.exe	46
PID 2756 wrote to memory of 2016	2756	Patcher.exe	48
PID 2756 wrote to memory of 2016	2756	Patcher.exe	48
PID 2756 wrote to memory of 2016	2756	Patcher.exe	48

C:\Users\Admin\AppData\Local\Temp\Patcher.exe
"C:\Users\Admin\AppData\Local\Temp\Patcher.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Patcher.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2772
- 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:2864
- 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:2180
- 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:2984
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:348
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2900
- 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:1388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2016

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
8dcb8ea77cc26501b7041bbc955d1651

SHA1
bb44e25707613fb632f722a2243ea91a0eab059b

SHA256
18725fc4fe4bf8cbca409baf441d8a1d54d4c6d817081472e492ef10643bb5b6

SHA512
7f25c5233df08335a6704b0e4f38884b2151ebf2e7f9bde1a7fb10284de4f30d3dd39ce50675b5bace8547804594a18e70fc9365e32aae085131342e99fbd8af

Download Submit
memory/1388-51-0x000000001B770000-0x000000001BA52000-memory.dmp

Filesize
2.9MB

Download
memory/2756-1-0x0000000000140000-0x0000000000190000-memory.dmp

Filesize
320KB

Download
memory/2756-2-0x000007FEF65E0000-0x000007FEF6FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-57-0x000007FEF65E0000-0x000007FEF6FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-54-0x000007FEF65E0000-0x000007FEF6FCC000-memory.dmp

Filesize
9.9MB

Download
memory/2756-0-0x000007FEF65E3000-0x000007FEF65E4000-memory.dmp

Filesize
4KB

Download
memory/2756-53-0x000007FEF65E3000-0x000007FEF65E4000-memory.dmp

Filesize
4KB

Download
memory/2772-9-0x000007FEEDA10000-0x000007FEEE3AD000-memory.dmp

Filesize
9.6MB

Download
memory/2772-11-0x000007FEEDA10000-0x000007FEEE3AD000-memory.dmp

Filesize
9.6MB

Download
memory/2772-15-0x000007FEEDA10000-0x000007FEEE3AD000-memory.dmp

Filesize
9.6MB

Download
memory/2772-12-0x000007FEEDA10000-0x000007FEEE3AD000-memory.dmp

Filesize
9.6MB

Download
memory/2772-13-0x000007FEEDA10000-0x000007FEEE3AD000-memory.dmp

Filesize
9.6MB

Download
memory/2772-14-0x000007FEEDA10000-0x000007FEEE3AD000-memory.dmp

Filesize
9.6MB

Download
memory/2772-8-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2772-10-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2772-7-0x000007FEEDCCE000-0x000007FEEDCCF000-memory.dmp

Filesize
4KB

Download
memory/2864-21-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2864-22-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download