MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d. 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: 14


Intelligence 14 IOCs YARA 30 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d
SHA3-384 hash: 2515b5ee5c0468c82ee05ba2d9aaa9c869c36f116c8defa55b4303aa7b4a505a5648821ce45e6d523979983995b12b79
SHA1 hash: 57a798461a09e87f976923d642e7526627c571df
MD5 hash: f99116fe8ec34dabe1601a42f4a61637
humanhash: nine-sierra-cola-queen
File name:Boostrtapper.exe
Download: download sample
Signature Vidar
Create hunting rule
File size:2'216'448 bytes
First seen:2026-03-16 20:58:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d42595b695fc008ef2c56aabd8efd68e (188 x Vidar, 92 x Rhadamanthys, 85 x Stealc)
ssdeep 24576:SF7prSsfR+hQSjaWkntRs43RMMGx2sKcDHsctaN9+zt6VKGiWCKGw0:SVksf6j7kXs4BMMGxLDxou6VE
TLSH T1D1A58E4B7CD144BAD069A33289B652A2BB34FC090B3223D72FA16B782F7A7D15D35714
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 abuse_ch
Tags:exe vidar

Intelligence

File Origin
# of uploads :
1
# of downloads :
212
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
vidar
Create hunting rule
ID:
1
File name:
Boostrtapper.exe
Verdict:
Malicious activity
Analysis date:
2026-03-16 15:09:45 UTC
Tags:
stealer stealc vidar xor-url generic golang
Link:
https://app.any.run/tasks/b0e5673f-3b17-4dab-bc7c-0e355736088b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/57685/
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69b81d3c88c80c01586acf79
Tags:
ransomware dridex small virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Gathering data
Verdict:
Malicious
Labled as:
WinGo/Kryptik_AGeneric.AB trojan
Link:
https://www.hybrid-analysis.com/sample/c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d
Verdict:
Clean
File Type:
exe x64
Link:
https://opentip.kaspersky.com/c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6736d6dc-8822-4f93-a323-f7e6a07d5052
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1884576
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to registers a callback to get notified when the system is suspended or resumed (often done by Miners)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Modifies the context of a thread in another process (thread injection)
Monitors registry run keys for changes
Multi AV Scanner detection for submitted file
Potentially malicious time measurement code found
Queues an APC in another process (thread injection)
Sample uses string decryption to hide its real strings
Sets debug register (to hijack the execution of another thread)
Suricata IDS alerts for network traffic
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Unusual module load detection (module proxying)
Writes to foreign memory regions
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1884576 Sample: Boostrtapper.exe Startdate: 16/03/2026 Architecture: WINDOWS Score: 100 68 Suricata IDS alerts for network traffic 2->68 70 Found malware configuration 2->70 72 Multi AV Scanner detection for submitted file 2->72 74 4 other signatures 2->74 7 Boostrtapper.exe 21 2->7         started        11 msedge.exe 69 645 2->11         started        13 msedge.exe 2->13         started        15 msedge.exe 2->15         started        process3 dnsIp4 50 31.57.201.48, 443, 49719, 49720 RASANAIR Iran (ISLAMIC Republic Of) 7->50 76 Tries to harvest and steal browser information (history, passwords, etc) 7->76 78 Sets debug register (to hijack the execution of another thread) 7->78 80 Writes to foreign memory regions 7->80 82 9 other signatures 7->82 17 msedge.exe 2 19 7->17         started        20 msedge.exe 7->20         started        22 msedge.exe 7->22         started        33 3 other processes 7->33 52 192.168.2.4, 138, 443, 49710 unknown unknown 11->52 54 192.168.2.5 unknown unknown 11->54 56 3 other IPs or domains 11->56 24 msedge.exe 11->24         started        27 msedge.exe 11->27         started        35 3 other processes 11->35 29 msedge.exe 13->29         started        31 msedge.exe 15->31         started        signatures5 process6 dnsIp7 66 Monitors registry run keys for changes 17->66 37 msedge.exe 17->37         started        39 msedge.exe 20->39         started        41 msedge.exe 22->41         started        58 part-0012.t-0009.t-msedge.net 13.107.213.40, 443, 49749, 49774 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 24->58 60 13.107.246.38, 443, 49795, 49796 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 24->60 62 35 other IPs or domains 24->62 43 chrome.exe 33->43         started        46 msedge.exe 33->46         started        48 msedge.exe 33->48         started        signatures8 process9 dnsIp10 64 www.google.com 43->64
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/f99116fe8ec34dabe1601a42f4a61637
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d/
Verdict:
Malicious
Threat:
Family.STEALC
Link:
https://tip.neiki.dev/file/c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d
Threat name:
Win64.Spyware.Vidar
Create hunting rule
Status:
Malicious
First seen:
2026-03-16 15:09:47 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
13 of 36 (36.11%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zdmq4az6aw5anfhextkcfbjikljwuixkfnh6nw33ncfnpdo5gwoq._file
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar botnet:6b889bcbac9d3d5e5d740d29b0b70bb2 stealer
Link:
https://tria.ge/reports/260316-zstt3sc19k/
Behaviour
Detects Vidar Stealer
Vidar
Vidar family
Malware Config
C2 Extraction:
https://31.57.201.48
https://telegram.me/mm8hyx
https://steamcommunity.com/profiles/76561198728266687
Unpacked files
SH256 hash:
c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d
MD5 hash:
f99116fe8ec34dabe1601a42f4a61637
SHA1 hash:
57a798461a09e87f976923d642e7526627c571df
Link:
https://www.unpac.me/results/c72f9318-da59-40a8-8cc5-3ce90a29cf0a/
Malware family:
Vidar
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c8d90e033e05/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c8d90e033e05ba0694e4bcd422852852d36a22ea2b4fe6db7b688ad78ddd359d

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
Create hunting rule
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
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:Golangmalware
Create hunting rule
Author:Dhanunjaya
Description:Malware in Golang
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:golang_duffcopy_amd64
Create hunting rule
Rule name:Golang_Find_CSC846
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:Golang_Find_CSC846_Simple
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:HiveRansomware
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule To Detect Hive V4 Ransomware
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Suspicious_Golang_Binary
Create hunting rule
Author:Tim Machac
Description:Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)
Rule name:SUSP_XORed_URL_In_EXE
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
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
Create hunting rule
Author:vietdx.mb
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/57685/

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