umbral | 0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 01:04

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General

Target

0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
Size

229KB
MD5

ae3713305401315a3b520e84fb786fe5
SHA1

914bd258c204e4cddab9dc0dbfb9c7134659ad57
SHA256

0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb
SHA512

ae29d0c4c9106dcfbd4a212968d7d8b87236c2f39ce37435d3a658fe1b42875e44cc65c98f818391a8051312811b51da747efef5fa347f3a053b58454bd1e155
SSDEEP

6144:dloZM3fsXtioRkts/cnnK6cMlpGZ7lTwk7tiTlwsJtSb8e1mdi:/oZ1tlRk83MlpGZ7lTwk7tiTlwsJIH

Score

10^/10

umbral credential_access discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2900-1-0x00000000002A0000-0x00000000002E0000-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
2828	powershell.exe
2728	powershell.exe
1768	powershell.exe
1832	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe

Deletes itself 1 IoCs

pid	Process
2708	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
2708	cmd.exe
2084	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2908	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2084	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
2828	powershell.exe
2728	powershell.exe
1768	powershell.exe
2180	powershell.exe
1832	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
Token: SeIncreaseQuotaPrivilege	2120	wmic.exe
Token: SeSecurityPrivilege	2120	wmic.exe
Token: SeTakeOwnershipPrivilege	2120	wmic.exe
Token: SeLoadDriverPrivilege	2120	wmic.exe
Token: SeSystemProfilePrivilege	2120	wmic.exe
Token: SeSystemtimePrivilege	2120	wmic.exe
Token: SeProfSingleProcessPrivilege	2120	wmic.exe
Token: SeIncBasePriorityPrivilege	2120	wmic.exe
Token: SeCreatePagefilePrivilege	2120	wmic.exe
Token: SeBackupPrivilege	2120	wmic.exe
Token: SeRestorePrivilege	2120	wmic.exe
Token: SeShutdownPrivilege	2120	wmic.exe
Token: SeDebugPrivilege	2120	wmic.exe
Token: SeSystemEnvironmentPrivilege	2120	wmic.exe
Token: SeRemoteShutdownPrivilege	2120	wmic.exe
Token: SeUndockPrivilege	2120	wmic.exe
Token: SeManageVolumePrivilege	2120	wmic.exe
Token: 33	2120	wmic.exe
Token: 34	2120	wmic.exe
Token: 35	2120	wmic.exe
Token: SeIncreaseQuotaPrivilege	2120	wmic.exe
Token: SeSecurityPrivilege	2120	wmic.exe
Token: SeTakeOwnershipPrivilege	2120	wmic.exe
Token: SeLoadDriverPrivilege	2120	wmic.exe
Token: SeSystemProfilePrivilege	2120	wmic.exe
Token: SeSystemtimePrivilege	2120	wmic.exe
Token: SeProfSingleProcessPrivilege	2120	wmic.exe
Token: SeIncBasePriorityPrivilege	2120	wmic.exe
Token: SeCreatePagefilePrivilege	2120	wmic.exe
Token: SeBackupPrivilege	2120	wmic.exe
Token: SeRestorePrivilege	2120	wmic.exe
Token: SeShutdownPrivilege	2120	wmic.exe
Token: SeDebugPrivilege	2120	wmic.exe
Token: SeSystemEnvironmentPrivilege	2120	wmic.exe
Token: SeRemoteShutdownPrivilege	2120	wmic.exe
Token: SeUndockPrivilege	2120	wmic.exe
Token: SeManageVolumePrivilege	2120	wmic.exe
Token: 33	2120	wmic.exe
Token: 34	2120	wmic.exe
Token: 35	2120	wmic.exe
Token: SeDebugPrivilege	2828	powershell.exe
Token: SeDebugPrivilege	2728	powershell.exe
Token: SeDebugPrivilege	1768	powershell.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeIncreaseQuotaPrivilege	2372	wmic.exe
Token: SeSecurityPrivilege	2372	wmic.exe
Token: SeTakeOwnershipPrivilege	2372	wmic.exe
Token: SeLoadDriverPrivilege	2372	wmic.exe
Token: SeSystemProfilePrivilege	2372	wmic.exe
Token: SeSystemtimePrivilege	2372	wmic.exe
Token: SeProfSingleProcessPrivilege	2372	wmic.exe
Token: SeIncBasePriorityPrivilege	2372	wmic.exe
Token: SeCreatePagefilePrivilege	2372	wmic.exe
Token: SeBackupPrivilege	2372	wmic.exe
Token: SeRestorePrivilege	2372	wmic.exe
Token: SeShutdownPrivilege	2372	wmic.exe
Token: SeDebugPrivilege	2372	wmic.exe
Token: SeSystemEnvironmentPrivilege	2372	wmic.exe
Token: SeRemoteShutdownPrivilege	2372	wmic.exe
Token: SeUndockPrivilege	2372	wmic.exe
Token: SeManageVolumePrivilege	2372	wmic.exe
Token: 33	2372	wmic.exe
Token: 34	2372	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 2120	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	30
PID 2900 wrote to memory of 2120	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	30
PID 2900 wrote to memory of 2120	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	30
PID 2900 wrote to memory of 2740	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	33
PID 2900 wrote to memory of 2740	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	33
PID 2900 wrote to memory of 2740	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	33
PID 2900 wrote to memory of 2828	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	35
PID 2900 wrote to memory of 2828	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	35
PID 2900 wrote to memory of 2828	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	35
PID 2900 wrote to memory of 2728	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	37
PID 2900 wrote to memory of 2728	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	37
PID 2900 wrote to memory of 2728	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	37
PID 2900 wrote to memory of 1768	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	39
PID 2900 wrote to memory of 1768	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	39
PID 2900 wrote to memory of 1768	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	39
PID 2900 wrote to memory of 2180	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	41
PID 2900 wrote to memory of 2180	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	41
PID 2900 wrote to memory of 2180	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	41
PID 2900 wrote to memory of 2372	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	43
PID 2900 wrote to memory of 2372	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	43
PID 2900 wrote to memory of 2372	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	43
PID 2900 wrote to memory of 2672	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	45
PID 2900 wrote to memory of 2672	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	45
PID 2900 wrote to memory of 2672	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	45
PID 2900 wrote to memory of 596	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	47
PID 2900 wrote to memory of 596	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	47
PID 2900 wrote to memory of 596	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	47
PID 2900 wrote to memory of 1832	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	49
PID 2900 wrote to memory of 1832	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	49
PID 2900 wrote to memory of 1832	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	49
PID 2900 wrote to memory of 2908	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	51
PID 2900 wrote to memory of 2908	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	51
PID 2900 wrote to memory of 2908	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	51
PID 2900 wrote to memory of 2708	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	53
PID 2900 wrote to memory of 2708	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	53
PID 2900 wrote to memory of 2708	2900	0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe	53
PID 2708 wrote to memory of 2084	2708	cmd.exe	55
PID 2708 wrote to memory of 2084	2708	cmd.exe	55
PID 2708 wrote to memory of 2084	2708	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2740	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe
"C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2120
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe"
  2⤵
  - Views/modifies file attributes
  PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2828
- 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:2728
- 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:1768
- 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:2180
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2372
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2672
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:596
- 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:1832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2908
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\0933217d8ea84d9341154ecc34a3f231cf2ff0e70d67dbe190265c7e26b96cfb.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2084

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\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
547cfb0bd0a8aa38c01690fa244fc07e

SHA1
b50bda7e806612ca31ed21d2b7ead8d821f78fe0

SHA256
bd1e06e0e2596356e698dad15f08fad8597f3265824423c03044f5c34bed7b90

SHA512
9da522453977d08be51294b01ff6779ade68532a80cef9655838889e08a569e739007a45aa2daaec452449d7f4c868de59d1b7420f0ea3592f823395bd96f2bf

Download Submit
memory/1832-43-0x0000000001FE0000-0x0000000001FE8000-memory.dmp

Filesize
32KB

Download
memory/2728-14-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2728-15-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2828-7-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2828-8-0x0000000002670000-0x0000000002678000-memory.dmp

Filesize
32KB

Download
memory/2900-0-0x000007FEF5FA3000-0x000007FEF5FA4000-memory.dmp

Filesize
4KB

Download
memory/2900-1-0x00000000002A0000-0x00000000002E0000-memory.dmp

Filesize
256KB

Download
memory/2900-2-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download
memory/2900-47-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download