MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 52fb1acfeb05dfcca47b00a79f6b5b7b35187a2f261c22ad358450280333fde2. 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: 12
| SHA256 hash: | 52fb1acfeb05dfcca47b00a79f6b5b7b35187a2f261c22ad358450280333fde2 |
|---|---|
| SHA3-384 hash: | 02c1072c606a7882813bd5caae8ea6717ab7539cc9527188c2d7e88915ef9eb2aa9cde4ea551612a333cb6a1a96c32bc |
| SHA1 hash: | 47aa528fd03aef53f2543395dcde73da2e61b275 |
| MD5 hash: | 0750dd62343644985db5b658418b8292 |
| humanhash: | maine-paris-sodium-undress |
| File name: | 08. 2026_Purchase Order_PARS_4500002352.xlsx.js |
| Download: | download sample |
| Signature | Formbook |
| File size: | 54'346 bytes |
| First seen: | 2026-07-08 12:27:36 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 48:5NPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNPNP+:1m3tDQlEyA4svNh83SXYOY5x8 |
| Threatray | 3'036 similar samples on MalwareBazaar |
| TLSH | T19B3327E0E7771510BBEF87352629EBA02D95A523034AF6C4743ADAB75B305A0DCB3874 |
| Magika | javascript |
| Reporter |  threatcat_ch |
| Tags: | FormBook js |
Intelligence
File Origin
# of uploads :
1
# of downloads :
191
Origin country :
CHVendor Threat Intelligence
No detections
Detection(s):
Verdict:
Malicious
Score:
81.4%
Tags:
cryxos virus shell spawn
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm fingerprint masquerade powershell repaired
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Verdict:
Malicious
File Type:
js
First seen:
2026-07-08T03:32:00Z UTC
Last seen:
2026-07-10T10:39:00Z UTC
Hits:
~1000
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan-Downloader.Script.Generic Trojan.VBS.SAgent.sb
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
Bypasses PowerShell execution policy
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample has a suspicious name (potential lure to open the executable)
Sigma detected: Cscript/Wscript Uncommon Script Extension Execution
Sigma detected: Suspicious Parent Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected FormBook
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Score:
58%
Verdict:
Susipicious
File Type:
SCRIPT
Gathering data
Threat name:
Win32.Trojan.Ravartar
Status:
Malicious
First seen:
2026-07-08 09:15:24 UTC
File Type:
Binary
AV detection:
11 of 38 (28.95%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 3'026 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery execution persistence rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Command and Scripting Interpreter: JavaScript
Command and Scripting Interpreter: PowerShell
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Badlisted process makes network request
Family: Formbook
Formbook payload
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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