MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 19130e674d477a13cba71e486128954ed3bc031a7e49cc95ee6cf9fb3b8616fe. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



UmbralStealer


Vendor detections: 19


Intelligence 19 IOCs YARA 17 File information Comments

SHA256 hash: 19130e674d477a13cba71e486128954ed3bc031a7e49cc95ee6cf9fb3b8616fe
SHA3-384 hash: 875db92207d4319d2d2a25e4793d54c1a8b1778a366f549be375d1576671f9c5c25b901567646d6db769497411c911db
SHA1 hash: 90e1c2748a92e554bceba1b108206eeb9d90109a
MD5 hash: c0b1b8ce6854bb601b36d0d9bc07ef61
humanhash: ack-oscar-blue-stream
File name:SB300.exe
Download: download sample
Signature UmbralStealer
File size:260'096 bytes
First seen:2026-03-04 13:00:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'855 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 6144:K4oZoAeVHPtHgTIAaZgCwDx7axHU0unC28ejI8P7:xoZyHPvWCwjXCsIu
TLSH T165448E4533B8CB12E25F8FBCE571449F8BB1F107ED0AF78E1D8899E81851B41E849A57
TrID 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.2% (.EXE) Win64 Executable (generic) (6522/11/2)
4.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter burger
Tags:exe UmbralStealer

Intelligence


File Origin
# of uploads :
1
# of downloads :
142
Origin country :
NL NL
Vendor Threat Intelligence
Malware configuration found for:
Umbral
Details
Umbral
a Discord webhook, a version, a mutex, and varying boolean fields
Malware family:
n/a
ID:
1
File name:
SB300.exe
Verdict:
Malicious activity
Analysis date:
2026-03-04 13:00:05 UTC
Tags:
evasion anti-evasion stealer auto-startup umbralstealer discord exfiltration umbral generic divulgestealer ims-api

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
vmdetect umbra
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm anti-vm base64 cmd fingerprint hacktool lolbin obfuscated reconnaissance umbral wmic zusy
Verdict:
Malicious
File Type:
exe x32
Detections:
HEUR:Trojan-PSW.MSIL.Umbral.gen Trojan-PSW.Win32.Disco.sb Trojan-PSW.MSIL.Umbral.sb Trojan-PSW.MSIL.Umbral.ii Trojan-PSW.MSIL.Stealer.sb Trojan.MSIL.Agent.sb
Malware family:
Sharp Stealer
Verdict:
Malicious
Result
Threat name:
Blank Grabber, Umbral Stealer
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Suricata IDS alerts for network traffic
Yara detected Blank Grabber
Yara detected Costura Assembly Loader
Yara detected Umbral Stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1878158 Sample: SB300.exe Startdate: 04/03/2026 Architecture: WINDOWS Score: 100 18 ip-api.com 2->18 22 Suricata IDS alerts for network traffic 2->22 24 Found malware configuration 2->24 26 Malicious sample detected (through community Yara rule) 2->26 28 11 other signatures 2->28 8 SB300.exe 14 3 2->8         started        signatures3 process4 dnsIp5 20 ip-api.com 208.95.112.1, 49715, 80 TUT-ASUS United States 8->20 16 C:\Users\user\AppData\Local\...\SB300.exe.log, CSV 8->16 dropped 12 WMIC.exe 1 8->12         started        file6 process7 process8 14 conhost.exe 12->14         started       
Gathering data
Threat name:
ByteCode-MSIL.Spyware.Umbral
Status:
Malicious
First seen:
2026-03-04 13:00:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
22 of 24 (91.67%)
Threat level:
  2/5
Verdict:
malicious
Label(s):
umbralstealer
Similar samples:
Result
Malware family:
Score:
  10/10
Tags:
family:umbral defense_evasion discovery execution spyware stealer
Behaviour
Detects videocard installed
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
System Network Configuration Discovery: Internet Connection Discovery
Contacts third-party web service commonly abused for C2
Looks up external IP address via web service
Disables automatic submission of suspicious files to Microsoft by Windows Defender
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Disables one or more Microsoft Defender components
Drops file in Drivers directory
Detects Umbral payload
Umbral
Umbral family
Malware Config
C2 Extraction:
https://discord.com/api/webhooks/1478520050377031921/qyAcaA8ynk3LOGjpWsFZtG9r5E_PGPNU1-b4oZ_OcEygjOnyOF-5FlpRXM3LisEdRS_Z
Unpacked files
SH256 hash:
19130e674d477a13cba71e486128954ed3bc031a7e49cc95ee6cf9fb3b8616fe
MD5 hash:
c0b1b8ce6854bb601b36d0d9bc07ef61
SHA1 hash:
90e1c2748a92e554bceba1b108206eeb9d90109a
Detections:
UmbralStealer
Malware family:
UmbralStealer
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Disable_Defender
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:INDICATOR_EXE_Packed_Fody
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM names
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs
Author:ditekSHen
Description:Detects executables containing possible sandbox system UUIDs
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxUserNames
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM usernames
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
Rule name:MALWARE_Win_UmbralStealer
Author:ditekShen
Description:Detects Umbral infostealer
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:RANSOMWARE
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Author:vietdx.mb
Rule name:UmbrealStealerEXIFData
Author:adm1n_usa32
Description:Detects UmbralStealer by obvious comment in EXIF Data

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments