MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7. 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


BRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7
SHA3-384 hash: 2504f389628ebbc3411c38243adf59a70aff5293b248bcb0016db03d281ae53c1eaf7287a55d64cc52e6313df649aec3
SHA1 hash: c1edd4315845f892932627200a1b651563b756b7
MD5 hash: f50846dcf09e0c7ce582040fb128ebf3
humanhash: paris-helium-blue-kansas
File name:cptchbuild.bin
Download: download sample
Signature BRAT
Create hunting rule
File size:185'856 bytes
First seen:2026-02-01 07:30:53 UTC
Last seen:2026-02-01 08:49:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c411c22bbc58519d23851b4202b63f4b (2 x XillenStealer, 1 x BRAT)
ssdeep 3072:wbhfRic/vxeVtMPw6J5IlSaTM4hbAGLH:AfRiEvxeHwhx8bAGL
TLSH T15B045C03F6E644F9D467D1B4A69BA633B5B1F85453382AAF0B90CA362D0DE30712DF46
Magika pebin
Reporter abuse_ch
Tags:bin BRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
134
Origin country :
SE SE
Vendor Threat Intelligence
Gathering data
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
http://91.92.240.219
Verdict:
Malicious activity
Analysis date:
2026-01-31 22:08:06 UTC
Tags:
loader clickfix phishing keylogger agenttesla websocket
Link:
https://app.any.run/tasks/31abf610-0378-4b5a-b7cd-cb9c818252f0

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/51089/
Detection(s):
SecuriteInfo.com.Win32.Agent-BEHY.36438618.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=697f0153848d0f834c8c5744
Tags:
vmdetect emotet
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 cmd crypto crypto evasive exploit fingerprint hacktool keylogger lolbin masquerade meterpreter obfuscated overlay
Link:
https://www.filescan.io/uploads/697f0149c9bfb60ece1a09a4/reports/c60f36f9-ec64-4181-bd00-8b06dc9bbf87/overview
Verdict:
Malicious
Labled as:
Shellcode.Loader.Marte.X.Generic
Link:
https://www.hybrid-analysis.com/sample/f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-01-31T21:57:00Z UTC
Last seen:
2026-02-01T11:35:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/33d2f420-83b9-445f-aa3b-aff97cc69a39
Result
Threat name:
BRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1861116
Signature
Contain functionality to detect virtual machines
Contains functionality to inject code into remote processes
Contains functionality to inject threads in other processes
Contains functionality to steal saved passwords of Firefox
Found evasive API chain (may stop execution after checking locale)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected BRAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/f50846dcf09e0c7ce582040fb128ebf3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7/
Threat name:
Win64.Infostealer.Tinba
Create hunting rule
Status:
Malicious
First seen:
2026-02-01 01:03:57 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=663t3aanmki27w257xhdzzgb6bch5hbqllijvhxt6olfuf7b6ktq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/260201-jckngadv6c/
Unpacked files
SH256 hash:
f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7
MD5 hash:
f50846dcf09e0c7ce582040fb128ebf3
SHA1 hash:
c1edd4315845f892932627200a1b651563b756b7
Link:
https://www.unpac.me/results/c512e4f7-31ec-4beb-9d1d-9ec7995f3afa/
SH256 hash:
1ab9909404776492d8440cb742b4872bd075db057af2b308139b519f6e4fd190
MD5 hash:
fb3931e463f66d2633ea9b276438fde4
SHA1 hash:
cadc21a43cea11b001d14655f85abafc24e4814a
Detections:
ReflectiveLoader
Create hunting rule
INDICATOR_SUSPICIOUS_ReflectiveLoader
Create hunting rule
Link:
https://www.unpac.me/results/c512e4f7-31ec-4beb-9d1d-9ec7995f3afa/
Parent samples :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 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/f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7

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:BunnyLoader
Create hunting rule
Author:indest
Description:generic crypto/card stealer rule
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__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:HKTL_Meterpreter_inMemory
Create hunting rule
Author:netbiosX, Florian Roth
Description:Detects Meterpreter in-memory
Reference:https://www.reddit.com/r/purpleteamsec/comments/hjux11/meterpreter_memory_indicators_detection_tooling/
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:Macos_Infostealer_Wallets_8e469ea0
Create hunting rule
Author:Elastic Security
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:ReflectiveLoader
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended
Reference:Internal Research
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

BRAT

Executable exe f7b73d800d6291afdb5dfdce3ce4c1f0447e9c305ad09a9ef3f3965a17e1f2a7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3739894/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/51089/

Comments