MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c5c12f3ffe00a9ad56f232f1f36ace01dc8e983f18f0c8a1b5d05b56ff5e3d67. 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: 13
| SHA256 hash: | c5c12f3ffe00a9ad56f232f1f36ace01dc8e983f18f0c8a1b5d05b56ff5e3d67 |
|---|---|
| SHA3-384 hash: | 360482a4d4535e51f056c5f3203a3611dbe70332571d95d168a38485d70d9cd9725e068be301ec2e9fb6d757ac704468 |
| SHA1 hash: | b2d81dceca84c992d871ac8789a32ed6ba8e1e8a |
| MD5 hash: | 999beb40a06a2641c2232c34d13260c1 |
| humanhash: | video-delaware-lactose-moon |
| File name: | svchost.exe |
| Download: | download sample |
| Signature | UmbralStealer |
| File size: | 235'008 bytes |
| First seen: | 2025-11-23 09:30:01 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 6144:9loZMHrIkd8g+EtXHkv/iD4qpLDJ6idnIJbGmTKDovAcYL8e1m9ui:foZIL+EP8qpLDJ6idnIJbGmTAncD |
| Threatray | 252 similar samples on MalwareBazaar |
| TLSH | T122346D5533B88B26E25F8BBDD5B1158F8771F103E90AF7CE0C4895F82812B42E949E57 |
| TrID | 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.7% (.EXE) Win64 Executable (generic) (10522/11/4) 6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.1% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| Reporter |  Hexastrike |
| Tags: | exe UmbralStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
19
Origin country :
IEVendor Threat Intelligence
Detection:
UmbralStealer
Gathering data
Gathering data
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Launching a process
Creating a file in the %temp% directory
Creating a window
Sending an HTTP GET request
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
anti-vm anti-vm base64 fingerprint hacktool obfuscated obfuscated reconnaissance
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Gathering data
Score:
96%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
11 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.53 Win 32 Exe x86
Threat name:
ByteCode-MSIL.Trojan.UmbralStealer
Status:
Malicious
First seen:
2025-11-21 20:50:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
29 of 36 (80.56%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
umbral
Similar samples:
+ 242 additional samples on MalwareBazaar
Result
Malware family:
umbral
Score:
10/10
Tags:
family:umbral defense_evasion execution spyware stealer
Behaviour
Detects videocard installed
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Legitimate hosting services abused for malware hosting/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
Detects Umbral payload
Umbral
Umbral family
Malware Config
C2 Extraction:
https://discord.com/api/webhooks/1436711540475560046/k3UqrnMRWKJE_5jW8ckxExV3Dv0leFPWirNdqc_28QnrhmDeOuRrNvJrU7SKrzPAhgOh
Verdict:
Malicious
Tags:
stealer umbral Win.Packed.Msilzilla-9952790-0
YARA:
MALWARE_Win_Umbralstealer
Unpacked files
SH256 hash:
c5c12f3ffe00a9ad56f232f1f36ace01dc8e983f18f0c8a1b5d05b56ff5e3d67
MD5 hash:
999beb40a06a2641c2232c34d13260c1
SHA1 hash:
b2d81dceca84c992d871ac8789a32ed6ba8e1e8a
Detections:
UmbralStealer
Malware family:
UmbralStealer
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | 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: | 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.
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