umbral | 824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a

Analysis

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

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05-08-2024 13:16

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General

Target

824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
Size

227KB
MD5

ef323a7483653ffb1fc4ff036576e065
SHA1

80e63b57a7ad6394f778c7aa5a855520f1533589
SHA256

824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a
SHA512

04785049f73acbacc2b0ea89e2bbc547ac6fa302eac4cbbd895f8d6a873c8b0dcfa8a8762d90847c9a0bf28862e12b294cb70f073019a6046bac104b9189ba7e
SSDEEP

6144:eloZM3fsXtioRkts/cnnK6cMluDdCFzQEb0CzFQMpnhb8e1msQci:IoZ1tlRk83MluDdCFzQEb0CzFQMpZ3K

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1976-1-0x00000000003C0000-0x0000000000400000-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
2836	powershell.exe
1632	powershell.exe
2632	powershell.exe
2008	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe

Deletes itself 1 IoCs

pid	Process
2704	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

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
1640	PING.EXE
2704	cmd.exe

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2064	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1640	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
2836	powershell.exe
2632	powershell.exe
2008	powershell.exe
1652	powershell.exe
1632	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
Token: SeIncreaseQuotaPrivilege	2900	wmic.exe
Token: SeSecurityPrivilege	2900	wmic.exe
Token: SeTakeOwnershipPrivilege	2900	wmic.exe
Token: SeLoadDriverPrivilege	2900	wmic.exe
Token: SeSystemProfilePrivilege	2900	wmic.exe
Token: SeSystemtimePrivilege	2900	wmic.exe
Token: SeProfSingleProcessPrivilege	2900	wmic.exe
Token: SeIncBasePriorityPrivilege	2900	wmic.exe
Token: SeCreatePagefilePrivilege	2900	wmic.exe
Token: SeBackupPrivilege	2900	wmic.exe
Token: SeRestorePrivilege	2900	wmic.exe
Token: SeShutdownPrivilege	2900	wmic.exe
Token: SeDebugPrivilege	2900	wmic.exe
Token: SeSystemEnvironmentPrivilege	2900	wmic.exe
Token: SeRemoteShutdownPrivilege	2900	wmic.exe
Token: SeUndockPrivilege	2900	wmic.exe
Token: SeManageVolumePrivilege	2900	wmic.exe
Token: 33	2900	wmic.exe
Token: 34	2900	wmic.exe
Token: 35	2900	wmic.exe
Token: SeIncreaseQuotaPrivilege	2900	wmic.exe
Token: SeSecurityPrivilege	2900	wmic.exe
Token: SeTakeOwnershipPrivilege	2900	wmic.exe
Token: SeLoadDriverPrivilege	2900	wmic.exe
Token: SeSystemProfilePrivilege	2900	wmic.exe
Token: SeSystemtimePrivilege	2900	wmic.exe
Token: SeProfSingleProcessPrivilege	2900	wmic.exe
Token: SeIncBasePriorityPrivilege	2900	wmic.exe
Token: SeCreatePagefilePrivilege	2900	wmic.exe
Token: SeBackupPrivilege	2900	wmic.exe
Token: SeRestorePrivilege	2900	wmic.exe
Token: SeShutdownPrivilege	2900	wmic.exe
Token: SeDebugPrivilege	2900	wmic.exe
Token: SeSystemEnvironmentPrivilege	2900	wmic.exe
Token: SeRemoteShutdownPrivilege	2900	wmic.exe
Token: SeUndockPrivilege	2900	wmic.exe
Token: SeManageVolumePrivilege	2900	wmic.exe
Token: 33	2900	wmic.exe
Token: 34	2900	wmic.exe
Token: 35	2900	wmic.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeDebugPrivilege	2008	powershell.exe
Token: SeDebugPrivilege	1652	powershell.exe
Token: SeIncreaseQuotaPrivilege	1716	wmic.exe
Token: SeSecurityPrivilege	1716	wmic.exe
Token: SeTakeOwnershipPrivilege	1716	wmic.exe
Token: SeLoadDriverPrivilege	1716	wmic.exe
Token: SeSystemProfilePrivilege	1716	wmic.exe
Token: SeSystemtimePrivilege	1716	wmic.exe
Token: SeProfSingleProcessPrivilege	1716	wmic.exe
Token: SeIncBasePriorityPrivilege	1716	wmic.exe
Token: SeCreatePagefilePrivilege	1716	wmic.exe
Token: SeBackupPrivilege	1716	wmic.exe
Token: SeRestorePrivilege	1716	wmic.exe
Token: SeShutdownPrivilege	1716	wmic.exe
Token: SeDebugPrivilege	1716	wmic.exe
Token: SeSystemEnvironmentPrivilege	1716	wmic.exe
Token: SeRemoteShutdownPrivilege	1716	wmic.exe
Token: SeUndockPrivilege	1716	wmic.exe
Token: SeManageVolumePrivilege	1716	wmic.exe
Token: 33	1716	wmic.exe
Token: 34	1716	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 2900	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	31
PID 1976 wrote to memory of 2900	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	31
PID 1976 wrote to memory of 2900	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	31
PID 1976 wrote to memory of 2876	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	34
PID 1976 wrote to memory of 2876	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	34
PID 1976 wrote to memory of 2876	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	34
PID 1976 wrote to memory of 2836	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	36
PID 1976 wrote to memory of 2836	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	36
PID 1976 wrote to memory of 2836	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	36
PID 1976 wrote to memory of 2632	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	38
PID 1976 wrote to memory of 2632	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	38
PID 1976 wrote to memory of 2632	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	38
PID 1976 wrote to memory of 2008	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	40
PID 1976 wrote to memory of 2008	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	40
PID 1976 wrote to memory of 2008	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	40
PID 1976 wrote to memory of 1652	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	42
PID 1976 wrote to memory of 1652	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	42
PID 1976 wrote to memory of 1652	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	42
PID 1976 wrote to memory of 1716	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	44
PID 1976 wrote to memory of 1716	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	44
PID 1976 wrote to memory of 1716	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	44
PID 1976 wrote to memory of 536	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	46
PID 1976 wrote to memory of 536	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	46
PID 1976 wrote to memory of 536	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	46
PID 1976 wrote to memory of 1596	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	48
PID 1976 wrote to memory of 1596	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	48
PID 1976 wrote to memory of 1596	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	48
PID 1976 wrote to memory of 1632	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	50
PID 1976 wrote to memory of 1632	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	50
PID 1976 wrote to memory of 1632	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	50
PID 1976 wrote to memory of 2064	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	52
PID 1976 wrote to memory of 2064	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	52
PID 1976 wrote to memory of 2064	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	52
PID 1976 wrote to memory of 2704	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	54
PID 1976 wrote to memory of 2704	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	54
PID 1976 wrote to memory of 2704	1976	824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe	54
PID 2704 wrote to memory of 1640	2704	cmd.exe	56
PID 2704 wrote to memory of 1640	2704	cmd.exe	56
PID 2704 wrote to memory of 1640	2704	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2876	attrib.exe

C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe
"C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe"
  2⤵
  - Views/modifies file attributes
  PID:2876
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2836
- 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:2632
- 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:2008
- 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:1652
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1716
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:536
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1596
- 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:1632
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2064
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\824d0e2ebaa40b7bca3bc0657338a13df78121172fe52e604f45c8033ab7537a.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1640

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\6U7RNQAKVFCJCI40ZNLC.temp

Filesize
7KB

MD5
79b0d1fcc5415d4da062f3d3b500d1ed

SHA1
b09ff439e35d8bef52d7c18de2448d3bcdfaf168

SHA256
a2db09b20e84254a25b24229614d7c236e554456dd8bf36da2ab1e8ba0acbf2a

SHA512
1e770eb8b9fac3f8f3ccc1c699d6fa5f1042a2fb3d0c5127908da2f21b3b717e0ee12053b07c6ad2caf378b45cbcfe327db4c6198d8ec9a6cbf7947a5c9cb562

Download Submit
memory/1632-44-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/1976-0-0x000007FEF5EF3000-0x000007FEF5EF4000-memory.dmp

Filesize
4KB

Download
memory/1976-1-0x00000000003C0000-0x0000000000400000-memory.dmp

Filesize
256KB

Download
memory/1976-2-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/1976-48-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/2632-14-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/2632-15-0x0000000001FC0000-0x0000000001FC8000-memory.dmp

Filesize
32KB

Download
memory/2836-7-0x000000001B860000-0x000000001BB42000-memory.dmp

Filesize
2.9MB

Download
memory/2836-8-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download