MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e. 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


Formbook


Vendor detections: 10


Intelligence 10 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e
SHA3-384 hash: 1697cf9840e2b49a71bd90cadfd6131bf22bf08efe1baeb0ff53c0193950240fd38a36b9f768058141e8e2688efa9129
SHA1 hash: f19bace94252784b5cfaed1553f3d1646002e1a2
MD5 hash: cfb42cd7448eb96bd2c588b5a3ff040b
humanhash: maryland-maryland-arkansas-equal
File name:HSBC PAYMENT CONFIRMATION.js
Download: download sample
Signature Formbook
Create hunting rule
File size:6'117'871 bytes
First seen:2026-07-21 11:24:21 UTC
Last seen:2026-07-23 09:33:26 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 24576:m7Q3kwXDxU/3UdxWLh45RZ0HV6WhlDAUPxDzO2iQl1Qjl/bqKr/0HEIUzVSUTwes:m72C726
TLSH T1B3561B6233CE7E02AA05BBADA94E9D88879FC1604FA779D8D48F06CC914B4DD7D1058F
Magika javascript
Reporter GDHJDSYDH1
Tags:FormBook js stealer xloader

Intelligence

File Origin
# of uploads :
3
# of downloads :
197
Origin country :
n/a
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a5f56f785479d70bfb7944f
Tags:
agenttesla virus shell sage
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
agenttesla anti-vm aspnet_compiler base64 base64 encrypted evasive evasive fingerprint lolbin masquerade obfuscated obfuscated powershell reconnaissance repaired
Link:
https://www.filescan.io/uploads/6a5f56f13160e5ab3b21b286/reports/9c297779-2f99-4c8c-9791-19255326d701/overview
Verdict:
Malicious
Labled as:
GT:JS.AgentTesla.666
Link:
https://www.hybrid-analysis.com/sample/597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e
Verdict:
Malicious
File Type:
js
First seen:
2026-07-20T08:00:00Z UTC
Last seen:
2026-07-22T07:00:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e/results?tab=lookup
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e/
Threat name:
Script-JS.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2026-07-21 07:50:09 UTC
AV detection:
7 of 38 (18.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lf6iuxaekpd6nsobkds2m3v6jyyr54umwvt44rgrimaytjscuapa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook adware collection defense_evasion discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260721-nhzrssfx3x/
Behaviour
Kills process with taskkill
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
Modifies file permissions
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
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/597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e

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:Base64_Encoded_Powershell_Directives
Create hunting 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__GlobalFlags
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:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
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:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

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

Web download

Formbook

Java Script (JS) js 597c8a5c0453c7e6c9c150e5a66ebe4e311ef28cb567ce44d1430189a642a01e

(this sample)

anyrun
any.run
https://app.any.run/tasks/b90d6b7e-7ff2-49f8-9485-18142e1d5bd9
  
Delivery method
Distributed via web download

Comments