umbral | e4e4f9045dc3683a2a69b9c7625f2ff46ed241ff64b47660a039dbc9d34cb0d5

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-04-2024 13:10

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General

Target

Umbral3.exe
Size

229KB
MD5

7a902c87a60986f18a6b097712299256
SHA1

2c01906a39faa9d27a41e0d3cd84e92410b9c483
SHA256

e4e4f9045dc3683a2a69b9c7625f2ff46ed241ff64b47660a039dbc9d34cb0d5
SHA512

c8b75b3f0a77d1f84167af3c431e186802ccd5271fc4a361142e0209541de37f5d584d487bf5ea4b4d921e6e3846267fdea9f65cbd71001331bfea08de5425b6
SSDEEP

6144:tloZMCrIkd8g+EtXHkv/iD4DDUgoOJBiLHaIJtM34b8e1mmi:voZRL+EP8DDUgoOJBiLHaIJtMQI

Score

10^/10

umbral spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/memory/2932-0-0x00000000008C0000-0x0000000000900000-memory.dmp	family_umbral
behavioral1/memory/2932-2-0x000000001B180000-0x000000001B200000-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	Umbral3.exe

Deletes itself 1 IoCs

pid	Process
1920	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
8	discord.com
9	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
6	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1724	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2800	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2604	powershell.exe
3044	powershell.exe
2452	powershell.exe
1952	powershell.exe
2820	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	Umbral3.exe
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeDebugPrivilege	3044	powershell.exe
Token: SeDebugPrivilege	2452	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeIncreaseQuotaPrivilege	828	wmic.exe
Token: SeSecurityPrivilege	828	wmic.exe
Token: SeTakeOwnershipPrivilege	828	wmic.exe
Token: SeLoadDriverPrivilege	828	wmic.exe
Token: SeSystemProfilePrivilege	828	wmic.exe
Token: SeSystemtimePrivilege	828	wmic.exe
Token: SeProfSingleProcessPrivilege	828	wmic.exe
Token: SeIncBasePriorityPrivilege	828	wmic.exe
Token: SeCreatePagefilePrivilege	828	wmic.exe
Token: SeBackupPrivilege	828	wmic.exe
Token: SeRestorePrivilege	828	wmic.exe
Token: SeShutdownPrivilege	828	wmic.exe
Token: SeDebugPrivilege	828	wmic.exe
Token: SeSystemEnvironmentPrivilege	828	wmic.exe
Token: SeRemoteShutdownPrivilege	828	wmic.exe
Token: SeUndockPrivilege	828	wmic.exe
Token: SeManageVolumePrivilege	828	wmic.exe
Token: 33	828	wmic.exe
Token: 34	828	wmic.exe
Token: 35	828	wmic.exe
Token: SeIncreaseQuotaPrivilege	828	wmic.exe
Token: SeSecurityPrivilege	828	wmic.exe
Token: SeTakeOwnershipPrivilege	828	wmic.exe
Token: SeLoadDriverPrivilege	828	wmic.exe
Token: SeSystemProfilePrivilege	828	wmic.exe
Token: SeSystemtimePrivilege	828	wmic.exe
Token: SeProfSingleProcessPrivilege	828	wmic.exe
Token: SeIncBasePriorityPrivilege	828	wmic.exe
Token: SeCreatePagefilePrivilege	828	wmic.exe
Token: SeBackupPrivilege	828	wmic.exe
Token: SeRestorePrivilege	828	wmic.exe
Token: SeShutdownPrivilege	828	wmic.exe
Token: SeDebugPrivilege	828	wmic.exe
Token: SeSystemEnvironmentPrivilege	828	wmic.exe
Token: SeRemoteShutdownPrivilege	828	wmic.exe
Token: SeUndockPrivilege	828	wmic.exe
Token: SeManageVolumePrivilege	828	wmic.exe
Token: 33	828	wmic.exe
Token: 34	828	wmic.exe
Token: 35	828	wmic.exe
Token: SeIncreaseQuotaPrivilege	1536	wmic.exe
Token: SeSecurityPrivilege	1536	wmic.exe
Token: SeTakeOwnershipPrivilege	1536	wmic.exe
Token: SeLoadDriverPrivilege	1536	wmic.exe
Token: SeSystemProfilePrivilege	1536	wmic.exe
Token: SeSystemtimePrivilege	1536	wmic.exe
Token: SeProfSingleProcessPrivilege	1536	wmic.exe
Token: SeIncBasePriorityPrivilege	1536	wmic.exe
Token: SeCreatePagefilePrivilege	1536	wmic.exe
Token: SeBackupPrivilege	1536	wmic.exe
Token: SeRestorePrivilege	1536	wmic.exe
Token: SeShutdownPrivilege	1536	wmic.exe
Token: SeDebugPrivilege	1536	wmic.exe
Token: SeSystemEnvironmentPrivilege	1536	wmic.exe
Token: SeRemoteShutdownPrivilege	1536	wmic.exe
Token: SeUndockPrivilege	1536	wmic.exe
Token: SeManageVolumePrivilege	1536	wmic.exe
Token: 33	1536	wmic.exe
Token: 34	1536	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 296	2932	Umbral3.exe	28
PID 2932 wrote to memory of 296	2932	Umbral3.exe	28
PID 2932 wrote to memory of 296	2932	Umbral3.exe	28
PID 2932 wrote to memory of 2604	2932	Umbral3.exe	30
PID 2932 wrote to memory of 2604	2932	Umbral3.exe	30
PID 2932 wrote to memory of 2604	2932	Umbral3.exe	30
PID 2932 wrote to memory of 3044	2932	Umbral3.exe	32
PID 2932 wrote to memory of 3044	2932	Umbral3.exe	32
PID 2932 wrote to memory of 3044	2932	Umbral3.exe	32
PID 2932 wrote to memory of 2452	2932	Umbral3.exe	34
PID 2932 wrote to memory of 2452	2932	Umbral3.exe	34
PID 2932 wrote to memory of 2452	2932	Umbral3.exe	34
PID 2932 wrote to memory of 1952	2932	Umbral3.exe	36
PID 2932 wrote to memory of 1952	2932	Umbral3.exe	36
PID 2932 wrote to memory of 1952	2932	Umbral3.exe	36
PID 2932 wrote to memory of 828	2932	Umbral3.exe	38
PID 2932 wrote to memory of 828	2932	Umbral3.exe	38
PID 2932 wrote to memory of 828	2932	Umbral3.exe	38
PID 2932 wrote to memory of 1536	2932	Umbral3.exe	41
PID 2932 wrote to memory of 1536	2932	Umbral3.exe	41
PID 2932 wrote to memory of 1536	2932	Umbral3.exe	41
PID 2932 wrote to memory of 2772	2932	Umbral3.exe	43
PID 2932 wrote to memory of 2772	2932	Umbral3.exe	43
PID 2932 wrote to memory of 2772	2932	Umbral3.exe	43
PID 2932 wrote to memory of 2820	2932	Umbral3.exe	45
PID 2932 wrote to memory of 2820	2932	Umbral3.exe	45
PID 2932 wrote to memory of 2820	2932	Umbral3.exe	45
PID 2932 wrote to memory of 1724	2932	Umbral3.exe	47
PID 2932 wrote to memory of 1724	2932	Umbral3.exe	47
PID 2932 wrote to memory of 1724	2932	Umbral3.exe	47
PID 2932 wrote to memory of 1920	2932	Umbral3.exe	49
PID 2932 wrote to memory of 1920	2932	Umbral3.exe	49
PID 2932 wrote to memory of 1920	2932	Umbral3.exe	49
PID 1920 wrote to memory of 2800	1920	cmd.exe	51
PID 1920 wrote to memory of 2800	1920	cmd.exe	51
PID 1920 wrote to memory of 2800	1920	cmd.exe	51

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
296	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Umbral3.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral3.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral3.exe"
  2⤵
  - Views/modifies file attributes
  PID:296
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral3.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2604
- 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:3044
- 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:2452
- 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:1952
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:828
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1536
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2772
- 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:2820
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1724
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral3.exe" && pause
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1920
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - Runs ping.exe
    PID:2800

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

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Downloads

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

Filesize
7KB

MD5
4c3dada670799e9495dd6c1b6e6814be

SHA1
102d41dbc2ae9e1ceba8b3674d4ed7ce1093ea9d

SHA256
4e5fb77e235bca233d56f18bae4d353d864fa70c74cb8403e059974a73b27f40

SHA512
9e222c7efcba8858a324056f7e37a9b1d9cc893a4d35171718545a2de480376830f8ee14beb0efe28c811ff11d2a8c4b75348602e89e5a6d0ab1cc0a675a3c09

Download Submit
memory/2604-8-0x00000000022D0000-0x00000000022D8000-memory.dmp

Filesize
32KB

Download
memory/2604-13-0x0000000002910000-0x0000000002990000-memory.dmp

Filesize
512KB

Download
memory/2604-15-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2604-9-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2604-10-0x0000000002910000-0x0000000002990000-memory.dmp

Filesize
512KB

Download
memory/2604-11-0x000007FEEDAA0000-0x000007FEEE43D000-memory.dmp

Filesize
9.6MB

Download
memory/2604-12-0x0000000002910000-0x0000000002990000-memory.dmp

Filesize
512KB

Download
memory/2604-7-0x000000001B7E0000-0x000000001BAC2000-memory.dmp

Filesize
2.9MB

Download
memory/2604-14-0x0000000002910000-0x0000000002990000-memory.dmp

Filesize
512KB

Download
memory/2820-50-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2932-0-0x00000000008C0000-0x0000000000900000-memory.dmp

Filesize
256KB

Download
memory/2932-2-0x000000001B180000-0x000000001B200000-memory.dmp

Filesize
512KB

Download
memory/2932-1-0x000007FEF5BD0000-0x000007FEF65BC000-memory.dmp

Filesize
9.9MB

Download
memory/2932-54-0x000007FEF5BD0000-0x000007FEF65BC000-memory.dmp

Filesize
9.9MB

Download
memory/3044-21-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/3044-22-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download