umbral | 17122c0a46007455035997b94a339b664d1b69cae5cf6a7b0544be7c2bed0326

Analysis

max time kernel
96s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-01-2025 06:47

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General

Target

visatool.exe
Size

229KB
MD5

8d12001c93eefec83bc3df9b79fd662e
SHA1

f2a218e2fe72e57f0c169e58af5a5bad232b155a
SHA256

17122c0a46007455035997b94a339b664d1b69cae5cf6a7b0544be7c2bed0326
SHA512

8878a410caa7a29a9bdd619f7566a10cd41fd97919bcefaa9641d6b3a91fad685cb375a8a0127d7296478f918372d680fe289f2bb84ef72ca3a3ec3eb7edd2ce
SSDEEP

6144:lloZMmrIkd8g+EtXHkv/iD4FOjFT5KyN54ZL22j3vtB48e1mfi:noZ1L+EP80jFT5KyN54ZL22jlAp

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2028-1-0x00000197CC930000-0x00000197CC970000-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
2860	powershell.exe
2872	powershell.exe
1844	powershell.exe
4256	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	visatool.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
23	discord.com
25	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
4948	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2028	visatool.exe
2860	powershell.exe
2860	powershell.exe
2872	powershell.exe
2872	powershell.exe
1844	powershell.exe
1844	powershell.exe
1340	powershell.exe
1340	powershell.exe
4256	powershell.exe
4256	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2028	visatool.exe
Token: SeIncreaseQuotaPrivilege	3304	wmic.exe
Token: SeSecurityPrivilege	3304	wmic.exe
Token: SeTakeOwnershipPrivilege	3304	wmic.exe
Token: SeLoadDriverPrivilege	3304	wmic.exe
Token: SeSystemProfilePrivilege	3304	wmic.exe
Token: SeSystemtimePrivilege	3304	wmic.exe
Token: SeProfSingleProcessPrivilege	3304	wmic.exe
Token: SeIncBasePriorityPrivilege	3304	wmic.exe
Token: SeCreatePagefilePrivilege	3304	wmic.exe
Token: SeBackupPrivilege	3304	wmic.exe
Token: SeRestorePrivilege	3304	wmic.exe
Token: SeShutdownPrivilege	3304	wmic.exe
Token: SeDebugPrivilege	3304	wmic.exe
Token: SeSystemEnvironmentPrivilege	3304	wmic.exe
Token: SeRemoteShutdownPrivilege	3304	wmic.exe
Token: SeUndockPrivilege	3304	wmic.exe
Token: SeManageVolumePrivilege	3304	wmic.exe
Token: 33	3304	wmic.exe
Token: 34	3304	wmic.exe
Token: 35	3304	wmic.exe
Token: 36	3304	wmic.exe
Token: SeIncreaseQuotaPrivilege	3304	wmic.exe
Token: SeSecurityPrivilege	3304	wmic.exe
Token: SeTakeOwnershipPrivilege	3304	wmic.exe
Token: SeLoadDriverPrivilege	3304	wmic.exe
Token: SeSystemProfilePrivilege	3304	wmic.exe
Token: SeSystemtimePrivilege	3304	wmic.exe
Token: SeProfSingleProcessPrivilege	3304	wmic.exe
Token: SeIncBasePriorityPrivilege	3304	wmic.exe
Token: SeCreatePagefilePrivilege	3304	wmic.exe
Token: SeBackupPrivilege	3304	wmic.exe
Token: SeRestorePrivilege	3304	wmic.exe
Token: SeShutdownPrivilege	3304	wmic.exe
Token: SeDebugPrivilege	3304	wmic.exe
Token: SeSystemEnvironmentPrivilege	3304	wmic.exe
Token: SeRemoteShutdownPrivilege	3304	wmic.exe
Token: SeUndockPrivilege	3304	wmic.exe
Token: SeManageVolumePrivilege	3304	wmic.exe
Token: 33	3304	wmic.exe
Token: 34	3304	wmic.exe
Token: 35	3304	wmic.exe
Token: 36	3304	wmic.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	1844	powershell.exe
Token: SeDebugPrivilege	1340	powershell.exe
Token: SeIncreaseQuotaPrivilege	4508	wmic.exe
Token: SeSecurityPrivilege	4508	wmic.exe
Token: SeTakeOwnershipPrivilege	4508	wmic.exe
Token: SeLoadDriverPrivilege	4508	wmic.exe
Token: SeSystemProfilePrivilege	4508	wmic.exe
Token: SeSystemtimePrivilege	4508	wmic.exe
Token: SeProfSingleProcessPrivilege	4508	wmic.exe
Token: SeIncBasePriorityPrivilege	4508	wmic.exe
Token: SeCreatePagefilePrivilege	4508	wmic.exe
Token: SeBackupPrivilege	4508	wmic.exe
Token: SeRestorePrivilege	4508	wmic.exe
Token: SeShutdownPrivilege	4508	wmic.exe
Token: SeDebugPrivilege	4508	wmic.exe
Token: SeSystemEnvironmentPrivilege	4508	wmic.exe
Token: SeRemoteShutdownPrivilege	4508	wmic.exe
Token: SeUndockPrivilege	4508	wmic.exe
Token: SeManageVolumePrivilege	4508	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 3304	2028	visatool.exe	83
PID 2028 wrote to memory of 3304	2028	visatool.exe	83
PID 2028 wrote to memory of 2860	2028	visatool.exe	86
PID 2028 wrote to memory of 2860	2028	visatool.exe	86
PID 2028 wrote to memory of 2872	2028	visatool.exe	89
PID 2028 wrote to memory of 2872	2028	visatool.exe	89
PID 2028 wrote to memory of 1844	2028	visatool.exe	91
PID 2028 wrote to memory of 1844	2028	visatool.exe	91
PID 2028 wrote to memory of 1340	2028	visatool.exe	93
PID 2028 wrote to memory of 1340	2028	visatool.exe	93
PID 2028 wrote to memory of 4508	2028	visatool.exe	95
PID 2028 wrote to memory of 4508	2028	visatool.exe	95
PID 2028 wrote to memory of 5028	2028	visatool.exe	97
PID 2028 wrote to memory of 5028	2028	visatool.exe	97
PID 2028 wrote to memory of 2200	2028	visatool.exe	99
PID 2028 wrote to memory of 2200	2028	visatool.exe	99
PID 2028 wrote to memory of 4256	2028	visatool.exe	101
PID 2028 wrote to memory of 4256	2028	visatool.exe	101
PID 2028 wrote to memory of 4948	2028	visatool.exe	103
PID 2028 wrote to memory of 4948	2028	visatool.exe	103

C:\Users\Admin\AppData\Local\Temp\visatool.exe
"C:\Users\Admin\AppData\Local\Temp\visatool.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3304
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\visatool.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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2872
- 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:1844
- 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:1340
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4508
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5028
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2200
- 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:4256
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4948

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

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
948B

MD5
b0dc7c3718882fe730dbbc1b681bfc49

SHA1
03a9c793855b3fc4a82d48a70841ab547cfb9943

SHA256
05b199d4f0d7025646593db4f3d2a22a44e4e64438668d34ec6a3a31afe249bb

SHA512
c927720f5387ba226136b57bce9fb7f37917478d42a466aa9b175561bb5aae6837f82b3b45a3b285460cecffd40742302ce607c58dea83b8a8704eef783c9601

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
84f61e87fa5831d59ac293b1aee242bc

SHA1
52db4b939a1f4dec6ed8869d106b0b87bd699fe3

SHA256
b0ca250671b1ec9fa27f2f7193f365e84485078b75655170142e789aa16f668d

SHA512
41d46c3058bc08ba489adbce63f1aeb2c23e641c548cb0ee7440cf5bb3d61260493467117566cd6280d548b151dfb4d4719da8c3c06f932ff05df9f699643787

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vrb50wrr.2jp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2028-70-0x00000197E6F20000-0x00000197E6F2A000-memory.dmp

Filesize
40KB

Download
memory/2028-71-0x00000197E7290000-0x00000197E72A2000-memory.dmp

Filesize
72KB

Download
memory/2028-92-0x00007FF858790000-0x00007FF859251000-memory.dmp

Filesize
10.8MB

Download
memory/2028-91-0x00000197E6E10000-0x00000197E6F12000-memory.dmp

Filesize
1.0MB

Download
memory/2028-31-0x00000197E7210000-0x00000197E7286000-memory.dmp

Filesize
472KB

Download
memory/2028-32-0x00000197E7190000-0x00000197E71E0000-memory.dmp

Filesize
320KB

Download
memory/2028-33-0x00000197CE5A0000-0x00000197CE5BE000-memory.dmp

Filesize
120KB

Download
memory/2028-1-0x00000197CC930000-0x00000197CC970000-memory.dmp

Filesize
256KB

Download
memory/2028-2-0x00007FF858790000-0x00007FF859251000-memory.dmp

Filesize
10.8MB

Download
memory/2028-0-0x00007FF858793000-0x00007FF858795000-memory.dmp

Filesize
8KB

Download
memory/2860-17-0x00007FF858790000-0x00007FF859251000-memory.dmp

Filesize
10.8MB

Download
memory/2860-3-0x00007FF858790000-0x00007FF859251000-memory.dmp

Filesize
10.8MB

Download
memory/2860-13-0x0000024733CC0000-0x0000024733CE2000-memory.dmp

Filesize
136KB

Download
memory/2860-14-0x00007FF858790000-0x00007FF859251000-memory.dmp

Filesize
10.8MB

Download