umbral | 0d0f238dfc7639c39bbd97db3e29bc62f5da11b5242ce594eafef6c5ebc15b30

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 18:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Umbral1.exe
Size

231KB
MD5

8b87bf1f0e629ac52ed3ea11d93e2985
SHA1

e89c68857a7478e1fe5a0846ef637284e1603bc6
SHA256

0d0f238dfc7639c39bbd97db3e29bc62f5da11b5242ce594eafef6c5ebc15b30
SHA512

d431b338536a879bf6ea50142936a8d05b4ebc5785a53e35f28a0f393744d17d987a0d63597a13273a9f36308537c6e23c02f197447f4a72a911dda715651180
SSDEEP

6144:xloZM9rIkd8g+EtXHkv/iD41FRzAmB5KG/Cwhl0OGb8e1mOSi:DoZOL+EP81FRzAmB5KG/Cwhl0NN

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/memory/1708-0-0x0000000000250000-0x0000000000290000-memory.dmp	family_umbral
behavioral1/memory/1708-2-0x000000001B060000-0x000000001B0E0000-memory.dmp	family_umbral

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Umbral1.exe

Deletes itself 1 IoCs

pid	Process
2284	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

flow	ioc
6	discord.com
7	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
4	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1484	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1200	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2644	powershell.exe
2344	powershell.exe
852	powershell.exe
2968	powershell.exe
860	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1708	Umbral1.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeDebugPrivilege	852	powershell.exe
Token: SeDebugPrivilege	2968	powershell.exe
Token: SeIncreaseQuotaPrivilege	1548	wmic.exe
Token: SeSecurityPrivilege	1548	wmic.exe
Token: SeTakeOwnershipPrivilege	1548	wmic.exe
Token: SeLoadDriverPrivilege	1548	wmic.exe
Token: SeSystemProfilePrivilege	1548	wmic.exe
Token: SeSystemtimePrivilege	1548	wmic.exe
Token: SeProfSingleProcessPrivilege	1548	wmic.exe
Token: SeIncBasePriorityPrivilege	1548	wmic.exe
Token: SeCreatePagefilePrivilege	1548	wmic.exe
Token: SeBackupPrivilege	1548	wmic.exe
Token: SeRestorePrivilege	1548	wmic.exe
Token: SeShutdownPrivilege	1548	wmic.exe
Token: SeDebugPrivilege	1548	wmic.exe
Token: SeSystemEnvironmentPrivilege	1548	wmic.exe
Token: SeRemoteShutdownPrivilege	1548	wmic.exe
Token: SeUndockPrivilege	1548	wmic.exe
Token: SeManageVolumePrivilege	1548	wmic.exe
Token: 33	1548	wmic.exe
Token: 34	1548	wmic.exe
Token: 35	1548	wmic.exe
Token: SeIncreaseQuotaPrivilege	1548	wmic.exe
Token: SeSecurityPrivilege	1548	wmic.exe
Token: SeTakeOwnershipPrivilege	1548	wmic.exe
Token: SeLoadDriverPrivilege	1548	wmic.exe
Token: SeSystemProfilePrivilege	1548	wmic.exe
Token: SeSystemtimePrivilege	1548	wmic.exe
Token: SeProfSingleProcessPrivilege	1548	wmic.exe
Token: SeIncBasePriorityPrivilege	1548	wmic.exe
Token: SeCreatePagefilePrivilege	1548	wmic.exe
Token: SeBackupPrivilege	1548	wmic.exe
Token: SeRestorePrivilege	1548	wmic.exe
Token: SeShutdownPrivilege	1548	wmic.exe
Token: SeDebugPrivilege	1548	wmic.exe
Token: SeSystemEnvironmentPrivilege	1548	wmic.exe
Token: SeRemoteShutdownPrivilege	1548	wmic.exe
Token: SeUndockPrivilege	1548	wmic.exe
Token: SeManageVolumePrivilege	1548	wmic.exe
Token: 33	1548	wmic.exe
Token: 34	1548	wmic.exe
Token: 35	1548	wmic.exe
Token: SeIncreaseQuotaPrivilege	2524	wmic.exe
Token: SeSecurityPrivilege	2524	wmic.exe
Token: SeTakeOwnershipPrivilege	2524	wmic.exe
Token: SeLoadDriverPrivilege	2524	wmic.exe
Token: SeSystemProfilePrivilege	2524	wmic.exe
Token: SeSystemtimePrivilege	2524	wmic.exe
Token: SeProfSingleProcessPrivilege	2524	wmic.exe
Token: SeIncBasePriorityPrivilege	2524	wmic.exe
Token: SeCreatePagefilePrivilege	2524	wmic.exe
Token: SeBackupPrivilege	2524	wmic.exe
Token: SeRestorePrivilege	2524	wmic.exe
Token: SeShutdownPrivilege	2524	wmic.exe
Token: SeDebugPrivilege	2524	wmic.exe
Token: SeSystemEnvironmentPrivilege	2524	wmic.exe
Token: SeRemoteShutdownPrivilege	2524	wmic.exe
Token: SeUndockPrivilege	2524	wmic.exe
Token: SeManageVolumePrivilege	2524	wmic.exe
Token: 33	2524	wmic.exe
Token: 34	2524	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2616	1708	Umbral1.exe	29
PID 1708 wrote to memory of 2616	1708	Umbral1.exe	29
PID 1708 wrote to memory of 2616	1708	Umbral1.exe	29
PID 1708 wrote to memory of 2644	1708	Umbral1.exe	30
PID 1708 wrote to memory of 2644	1708	Umbral1.exe	30
PID 1708 wrote to memory of 2644	1708	Umbral1.exe	30
PID 1708 wrote to memory of 2344	1708	Umbral1.exe	32
PID 1708 wrote to memory of 2344	1708	Umbral1.exe	32
PID 1708 wrote to memory of 2344	1708	Umbral1.exe	32
PID 1708 wrote to memory of 852	1708	Umbral1.exe	34
PID 1708 wrote to memory of 852	1708	Umbral1.exe	34
PID 1708 wrote to memory of 852	1708	Umbral1.exe	34
PID 1708 wrote to memory of 2968	1708	Umbral1.exe	36
PID 1708 wrote to memory of 2968	1708	Umbral1.exe	36
PID 1708 wrote to memory of 2968	1708	Umbral1.exe	36
PID 1708 wrote to memory of 1548	1708	Umbral1.exe	38
PID 1708 wrote to memory of 1548	1708	Umbral1.exe	38
PID 1708 wrote to memory of 1548	1708	Umbral1.exe	38
PID 1708 wrote to memory of 2524	1708	Umbral1.exe	41
PID 1708 wrote to memory of 2524	1708	Umbral1.exe	41
PID 1708 wrote to memory of 2524	1708	Umbral1.exe	41
PID 1708 wrote to memory of 944	1708	Umbral1.exe	43
PID 1708 wrote to memory of 944	1708	Umbral1.exe	43
PID 1708 wrote to memory of 944	1708	Umbral1.exe	43
PID 1708 wrote to memory of 860	1708	Umbral1.exe	45
PID 1708 wrote to memory of 860	1708	Umbral1.exe	45
PID 1708 wrote to memory of 860	1708	Umbral1.exe	45
PID 1708 wrote to memory of 1484	1708	Umbral1.exe	47
PID 1708 wrote to memory of 1484	1708	Umbral1.exe	47
PID 1708 wrote to memory of 1484	1708	Umbral1.exe	47
PID 1708 wrote to memory of 2284	1708	Umbral1.exe	49
PID 1708 wrote to memory of 2284	1708	Umbral1.exe	49
PID 1708 wrote to memory of 2284	1708	Umbral1.exe	49
PID 2284 wrote to memory of 1200	2284	cmd.exe	51
PID 2284 wrote to memory of 1200	2284	cmd.exe	51
PID 2284 wrote to memory of 1200	2284	cmd.exe	51

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2616	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Umbral1.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral1.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral1.exe"
  2⤵
  - Views/modifies file attributes
  PID:2616
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral1.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- 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:2344
- 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:852
- 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:2968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1548
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:944
- 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:860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1484
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral1.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:1200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
544f3ab6070683a5f9f8c4156136990f

SHA1
b4108472ec9e87ad28980b0d830756b2e7f64fa2

SHA256
ab836d53780741e88495a1a09f6e037a80a96053e6509d14b17d721f39115070

SHA512
6598c34e9e6821ed9020be06b93c1d1391a3db332a1af2e180a7dad75233241e6ec29623cfeb69901451ab032ee5fe399a63b5c7eeabeb91e0efdb1c9e1b83fa

Download Submit
memory/852-48-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/852-47-0x0000000002E80000-0x0000000002F00000-memory.dmp

Filesize
512KB

Download
memory/852-42-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/852-43-0x0000000002E80000-0x0000000002F00000-memory.dmp

Filesize
512KB

Download
memory/852-45-0x0000000002E80000-0x0000000002F00000-memory.dmp

Filesize
512KB

Download
memory/852-44-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/860-72-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/860-69-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/860-71-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/860-70-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/860-75-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/860-74-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/860-73-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/1708-56-0x000000001B060000-0x000000001B0E0000-memory.dmp

Filesize
512KB

Download
memory/1708-0-0x0000000000250000-0x0000000000290000-memory.dmp

Filesize
256KB

Download
memory/1708-1-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/1708-2-0x000000001B060000-0x000000001B0E0000-memory.dmp

Filesize
512KB

Download
memory/1708-79-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/1708-46-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2344-24-0x0000000002C70000-0x0000000002CF0000-memory.dmp

Filesize
512KB

Download
memory/2344-27-0x000007FEED900000-0x000007FEEE29D000-memory.dmp

Filesize
9.6MB

Download
memory/2344-28-0x0000000002C70000-0x0000000002CF0000-memory.dmp

Filesize
512KB

Download
memory/2344-26-0x0000000002C70000-0x0000000002CF0000-memory.dmp

Filesize
512KB

Download
memory/2344-21-0x000007FEED900000-0x000007FEEE29D000-memory.dmp

Filesize
9.6MB

Download
memory/2344-22-0x0000000002260000-0x0000000002268000-memory.dmp

Filesize
32KB

Download
memory/2344-23-0x0000000002C70000-0x0000000002CF0000-memory.dmp

Filesize
512KB

Download
memory/2344-25-0x000007FEED900000-0x000007FEEE29D000-memory.dmp

Filesize
9.6MB

Download
memory/2344-20-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2644-14-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/2644-9-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/2644-10-0x0000000002800000-0x0000000002880000-memory.dmp

Filesize
512KB

Download
memory/2644-11-0x000007FEEE2A0000-0x000007FEEEC3D000-memory.dmp

Filesize
9.6MB

Download
memory/2644-12-0x0000000002800000-0x0000000002880000-memory.dmp

Filesize
512KB

Download
memory/2644-13-0x0000000002800000-0x0000000002880000-memory.dmp

Filesize
512KB

Download
memory/2644-8-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2644-7-0x000000001B510000-0x000000001B7F2000-memory.dmp

Filesize
2.9MB

Download
memory/2968-59-0x00000000028F0000-0x0000000002970000-memory.dmp

Filesize
512KB

Download
memory/2968-57-0x00000000028F0000-0x0000000002970000-memory.dmp

Filesize
512KB

Download
memory/2968-55-0x000007FEED900000-0x000007FEEE29D000-memory.dmp

Filesize
9.6MB

Download
memory/2968-60-0x000007FEED900000-0x000007FEEE29D000-memory.dmp

Filesize
9.6MB

Download
memory/2968-58-0x000007FEED900000-0x000007FEEE29D000-memory.dmp

Filesize
9.6MB

Download