MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3ff379fcedca10405d22eb467db5d93a9393e3e5b69f179989e02ec1ff23a578. 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
Vidar
Vendor detections: 16
| SHA256 hash: | 3ff379fcedca10405d22eb467db5d93a9393e3e5b69f179989e02ec1ff23a578 |
|---|---|
| SHA3-384 hash: | dcafe57af277d94e9b905fa246f26b55ec789f5e581b48a0c1aebe898afdc2b67fd8a4b85e91b0c0793cff730a5bddb0 |
| SHA1 hash: | 7f8ba4fb2dcfa3ab390df14899ca23c8b280eb62 |
| MD5 hash: | b37e5964bddc09f0532077bf8915bd16 |
| humanhash: | emma-wolfram-october-may |
| File name: | bootstrapper.exe |
| Download: | download sample |
| Signature | Vidar |
| File size: | 2'978'688 bytes |
| First seen: | 2026-06-25 10:13:34 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | d42595b695fc008ef2c56aabd8efd68e (516 x Vidar, 98 x RemusStealer, 97 x Stealc) |
| ssdeep | 49152:nWbqlkA466erkBFzNJe0TTfEj2nlDaW02RIyDOf2ivn+lzQtUKLxeyWA:nRkTLNJ3R1ZIjPwuPLx4A |
| Threatray | 91 similar samples on MalwareBazaar |
| TLSH | T1D1D58D0B2CD10CF9C8E993728976A2937BB5BC155B32B3D32E8176B82E3A6D05D75350 |
| TrID | 33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| Reporter |  burger |
| Tags: | exe signed vidar |
Code Signing Certificate
| Organisation: | pokerstars.com |
|---|---|
| Issuer: | pokerstars.com |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2026-06-24T12:01:13Z |
| Valid to: | 2027-06-24T12:01:13Z |
| Serial number: | 0fd2651ee866153a |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | 56f30d1774dbac8ad25b5f37a268653426ddcb9f988aa7ac681beaac243ee1a9 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
167
Origin country :
USVendor Threat Intelligence
No detections
Malware family:
vidar
ID:
1
File name:
bootstrapper.exe
Verdict:
Malicious activity
Analysis date:
2026-06-25 10:11:38 UTC
Tags:
stealer stealc vidar golang
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
81.4%
Tags:
injection obfusc crypt
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Connection attempt to an infection source
Sending a TCP request to an infection source
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-vm crypto golang packed signed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-06-24T15:00:00Z UTC
Last seen:
2026-06-24T17:09:00Z UTC
Hits:
~100
Detections:
Trojan-PSW.Stealerc.HTTP.C&C PDM:Trojan.Win32.Generic Backdoor.Win64.Gsb.bus Backdoor.Win64.Gsb.sb Trojan.Win64.Agent.sb Trojan-PSW.Vidar.HTTP.C&C Trojan-PSW.Stealerc.TCP.C&C
Verdict:
Unknown
Result
Threat name:
Vidar
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Signature
AI detected suspicious PE / MSI digital signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to registers a callback to get notified when the system is suspended or resumed (often done by Miners)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides threads from debuggers
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Potentially malicious time measurement code found
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Unusual module load detection (module proxying)
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Verdict:
Malicious
Threat:
Family.STEALC
Threat name:
Win64.Trojan.Kepavll
Status:
Malicious
First seen:
2026-06-24 19:39:16 UTC
File Type:
PE+ (Exe)
AV detection:
25 of 38 (65.79%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
vidar
Similar samples:
+ 81 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
7/10
Tags:
credential_access discovery spyware stealer
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Browser Information Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks installed software on the system
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Unsecured Credentials: Credentials In Files
Unpacked files
SH256 hash:
3ff379fcedca10405d22eb467db5d93a9393e3e5b69f179989e02ec1ff23a578
MD5 hash:
b37e5964bddc09f0532077bf8915bd16
SHA1 hash:
7f8ba4fb2dcfa3ab390df14899ca23c8b280eb62
Malware family:
Vidar
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
vidar
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: | command_and_control |
|---|---|
| Author: | CD_R0M_ |
| Description: | This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group |
| Rule name: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerException__SetConsoleCtrl |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectGoMethodSignatures |
|---|---|
| Author: | Wyatt Tauber |
| Description: | Detects Go method signatures in unpacked Go binaries |
| Rule name: | Detect_Go_GOMAXPROCS |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
| Rule name: | GoBinTest |
|---|
| Rule name: | golang |
|---|
| Rule name: | Golangmalware |
|---|---|
| Author: | Dhanunjaya |
| Description: | Malware in Golang |
| Rule name: | golang_binary_string |
|---|---|
| Description: | Golang strings present |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | golang_duffcopy_amd64 |
|---|
| Rule name: | Golang_Find_CSC846 |
|---|---|
| Author: | Ashar Siddiqui |
| Description: | Find Go Signatuers |
| Rule name: | Golang_Find_CSC846_Simple |
|---|---|
| Author: | Ashar Siddiqui |
| Description: | Find Go Signatuers |
| Rule name: | HiveRansomware |
|---|---|
| Author: | Dhanunjaya |
| Description: | Yara Rule To Detect Hive V4 Ransomware |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | ProgramLanguage_Golang |
|---|---|
| Author: | albertzsigovits |
| Description: | Application written in Golang programming language |
| Rule name: | RemusStealer_GoPayload |
|---|---|
| Author: | burger |
| Description: | Detects RemusStealer Go-compiled payload |
| Rule name: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | Suspicious_Golang_Binary |
|---|---|
| Author: | Tim Machac |
| Description: | Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific) |
| Rule name: | telebot_framework |
|---|---|
| Author: | vietdx.mb |
| Rule name: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments |
| Reference: | https://cyfare.net/ |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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