umbral | 8cd9fd712793b39d1101a1cd37c763c28349a644e6c000a81975a0ae9db48840

Analysis

max time kernel
6s
max time network
9s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
12-01-2025 22:30

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General

Target

Cool.exe
Size

229KB
MD5

a88da7af6e8d876cdcaf780187aaee84
SHA1

6ed68b09fa6ff56e96570a19521ecaa05780cd3d
SHA256

8cd9fd712793b39d1101a1cd37c763c28349a644e6c000a81975a0ae9db48840
SHA512

925860f9e756735219fe1c0958dfcee0308d5c948ace11203c8b5fb17120014a4026bceb1b1a25d999b1141488608dfe5091ebb1588f1cd01dfbbc499f0ecc75
SSDEEP

6144:9loZMLrIkd8g+EtXHkv/iD4LJXMJX8Qfx+nJUg1uQb8e1mci:foZ0L+EP8LJXMJX8Qfx+nJUg13i

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2488-1-0x0000022C6CCE0000-0x0000022C6CD20000-memory.dmp	family_umbral

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

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
3096	powershell.exe
4312	powershell.exe
4780	powershell.exe
4080	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	discord.com
6	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
3	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2924	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2488	Cool.exe
3096	powershell.exe
3096	powershell.exe
4312	powershell.exe
4312	powershell.exe
4780	powershell.exe
4780	powershell.exe
5936	powershell.exe
5936	powershell.exe
4080	powershell.exe
4080	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	Cool.exe
Token: SeIncreaseQuotaPrivilege	5916	wmic.exe
Token: SeSecurityPrivilege	5916	wmic.exe
Token: SeTakeOwnershipPrivilege	5916	wmic.exe
Token: SeLoadDriverPrivilege	5916	wmic.exe
Token: SeSystemProfilePrivilege	5916	wmic.exe
Token: SeSystemtimePrivilege	5916	wmic.exe
Token: SeProfSingleProcessPrivilege	5916	wmic.exe
Token: SeIncBasePriorityPrivilege	5916	wmic.exe
Token: SeCreatePagefilePrivilege	5916	wmic.exe
Token: SeBackupPrivilege	5916	wmic.exe
Token: SeRestorePrivilege	5916	wmic.exe
Token: SeShutdownPrivilege	5916	wmic.exe
Token: SeDebugPrivilege	5916	wmic.exe
Token: SeSystemEnvironmentPrivilege	5916	wmic.exe
Token: SeRemoteShutdownPrivilege	5916	wmic.exe
Token: SeUndockPrivilege	5916	wmic.exe
Token: SeManageVolumePrivilege	5916	wmic.exe
Token: 33	5916	wmic.exe
Token: 34	5916	wmic.exe
Token: 35	5916	wmic.exe
Token: 36	5916	wmic.exe
Token: SeIncreaseQuotaPrivilege	5916	wmic.exe
Token: SeSecurityPrivilege	5916	wmic.exe
Token: SeTakeOwnershipPrivilege	5916	wmic.exe
Token: SeLoadDriverPrivilege	5916	wmic.exe
Token: SeSystemProfilePrivilege	5916	wmic.exe
Token: SeSystemtimePrivilege	5916	wmic.exe
Token: SeProfSingleProcessPrivilege	5916	wmic.exe
Token: SeIncBasePriorityPrivilege	5916	wmic.exe
Token: SeCreatePagefilePrivilege	5916	wmic.exe
Token: SeBackupPrivilege	5916	wmic.exe
Token: SeRestorePrivilege	5916	wmic.exe
Token: SeShutdownPrivilege	5916	wmic.exe
Token: SeDebugPrivilege	5916	wmic.exe
Token: SeSystemEnvironmentPrivilege	5916	wmic.exe
Token: SeRemoteShutdownPrivilege	5916	wmic.exe
Token: SeUndockPrivilege	5916	wmic.exe
Token: SeManageVolumePrivilege	5916	wmic.exe
Token: 33	5916	wmic.exe
Token: 34	5916	wmic.exe
Token: 35	5916	wmic.exe
Token: 36	5916	wmic.exe
Token: SeDebugPrivilege	3096	powershell.exe
Token: SeDebugPrivilege	4312	powershell.exe
Token: SeDebugPrivilege	4780	powershell.exe
Token: SeDebugPrivilege	5936	powershell.exe
Token: SeIncreaseQuotaPrivilege	2748	wmic.exe
Token: SeSecurityPrivilege	2748	wmic.exe
Token: SeTakeOwnershipPrivilege	2748	wmic.exe
Token: SeLoadDriverPrivilege	2748	wmic.exe
Token: SeSystemProfilePrivilege	2748	wmic.exe
Token: SeSystemtimePrivilege	2748	wmic.exe
Token: SeProfSingleProcessPrivilege	2748	wmic.exe
Token: SeIncBasePriorityPrivilege	2748	wmic.exe
Token: SeCreatePagefilePrivilege	2748	wmic.exe
Token: SeBackupPrivilege	2748	wmic.exe
Token: SeRestorePrivilege	2748	wmic.exe
Token: SeShutdownPrivilege	2748	wmic.exe
Token: SeDebugPrivilege	2748	wmic.exe
Token: SeSystemEnvironmentPrivilege	2748	wmic.exe
Token: SeRemoteShutdownPrivilege	2748	wmic.exe
Token: SeUndockPrivilege	2748	wmic.exe
Token: SeManageVolumePrivilege	2748	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 5916	2488	Cool.exe	77
PID 2488 wrote to memory of 5916	2488	Cool.exe	77
PID 2488 wrote to memory of 3096	2488	Cool.exe	80
PID 2488 wrote to memory of 3096	2488	Cool.exe	80
PID 2488 wrote to memory of 4312	2488	Cool.exe	82
PID 2488 wrote to memory of 4312	2488	Cool.exe	82
PID 2488 wrote to memory of 4780	2488	Cool.exe	84
PID 2488 wrote to memory of 4780	2488	Cool.exe	84
PID 2488 wrote to memory of 5936	2488	Cool.exe	86
PID 2488 wrote to memory of 5936	2488	Cool.exe	86
PID 2488 wrote to memory of 2748	2488	Cool.exe	88
PID 2488 wrote to memory of 2748	2488	Cool.exe	88
PID 2488 wrote to memory of 5092	2488	Cool.exe	90
PID 2488 wrote to memory of 5092	2488	Cool.exe	90
PID 2488 wrote to memory of 1048	2488	Cool.exe	92
PID 2488 wrote to memory of 1048	2488	Cool.exe	92
PID 2488 wrote to memory of 4080	2488	Cool.exe	94
PID 2488 wrote to memory of 4080	2488	Cool.exe	94
PID 2488 wrote to memory of 2924	2488	Cool.exe	96
PID 2488 wrote to memory of 2924	2488	Cool.exe	96

C:\Users\Admin\AppData\Local\Temp\Cool.exe
"C:\Users\Admin\AppData\Local\Temp\Cool.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5916
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Cool.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3096
- 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:4312
- 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:4780
- 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:5936
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2748
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5092
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1048
- 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:4080
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2924

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
4f5f260adddac5f80eb2d1c0784a2e24

SHA1
8719894ff1664202f9e228c55f94d62dcaf12cce

SHA256
7b41d9c769cb20c7ad73e7afa44f964fd7fe66be45d2b0a2ef438dc985433202

SHA512
aa4a23298fda2e7bd6168bcb25b4a215616bccf73705e3566b6b576bf33bb9336682ace3354643332c940c5ee02eef59682a77447ba2f94e97ae0b4722ef0ba7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
f29ff8b1e0f396a194a6782749830b8e

SHA1
2f8999b0eb2a20e591cf9a638c9fa84ddf4a1f69

SHA256
5bfd4968395fefaac3941c08fa11e86dfde1072137d9290aee3888f2a5d92d3f

SHA512
0689d665f2a7c9007c5dc4c14a53d5566d315d05d476bee82d64d02d40e3ffddca2b36419c76a8f7b7979958a62a7a93c939d1ed72fa7a844841ed06741b9e19

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
60a84ea8f3888e51bb0fe4856926a639

SHA1
43848b5a831f8fe7623694b36b17554b83770269

SHA256
5d219511d1091f4dc52ef6664815bcacf013c76b695bf2195aa439a6cc431504

SHA512
f6381deedc9612c96914173d948bd601192256c1b65a6b6be3c6664de84df64fb8740fa0205846e0380305bf5442e52991d134ff94b8edc899775befcc4a86ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qhgl520r.kqi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2488-68-0x0000022C6F480000-0x0000022C6F48A000-memory.dmp

Filesize
40KB

Download
memory/2488-33-0x0000022C6F5C0000-0x0000022C6F5DE000-memory.dmp

Filesize
120KB

Download
memory/2488-88-0x00007FF91FE10000-0x00007FF9208D2000-memory.dmp

Filesize
10.8MB

Download
memory/2488-69-0x0000022C6F590000-0x0000022C6F5A2000-memory.dmp

Filesize
72KB

Download
memory/2488-2-0x00007FF91FE10000-0x00007FF9208D2000-memory.dmp

Filesize
10.8MB

Download
memory/2488-31-0x0000022C6F4C0000-0x0000022C6F536000-memory.dmp

Filesize
472KB

Download
memory/2488-32-0x0000022C6F540000-0x0000022C6F590000-memory.dmp

Filesize
320KB

Download
memory/2488-0-0x00007FF91FE13000-0x00007FF91FE15000-memory.dmp

Filesize
8KB

Download
memory/2488-1-0x0000022C6CCE0000-0x0000022C6CD20000-memory.dmp

Filesize
256KB

Download
memory/3096-14-0x00007FF91FE10000-0x00007FF9208D2000-memory.dmp

Filesize
10.8MB

Download
memory/3096-9-0x00007FF91FE10000-0x00007FF9208D2000-memory.dmp

Filesize
10.8MB

Download
memory/3096-3-0x00007FF91FE10000-0x00007FF9208D2000-memory.dmp

Filesize
10.8MB

Download
memory/3096-13-0x000002CF2D510000-0x000002CF2D532000-memory.dmp

Filesize
136KB

Download
memory/3096-17-0x00007FF91FE10000-0x00007FF9208D2000-memory.dmp

Filesize
10.8MB

Download