MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e. 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: 13


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e
SHA3-384 hash: 265d7b79c2639640ab367c39da84828c8270fc809352091c828423ef4c638e02204d609979632858d86745048ce76d45
SHA1 hash: efeb60bcb47ce2c233df1b57ea271f9cb15baeb4
MD5 hash: 48e00e9bcecae87228d4f9270bff56fa
humanhash: london-football-xray-delaware
File name:Solicitud de cotizacion UNA25100765·pdf.js
Download: download sample
Signature Formbook
Create hunting rule
File size:389'030 bytes
First seen:2025-10-07 18:35:12 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 6144:mB0BtBkBoBKBqBdBZBLB8BuBnBZBoBKBpBrBgBhBqBdBoBZBfBGBd:MqPaeQw/r1y0BreQ7V2zw/erZsd
Threatray 1'791 similar samples on MalwareBazaar
TLSH T19D846C61EC65166B8F8B2389ACA51795CAFD85450A2350F2F3DE4B4D720A8ECC37E374
Magika javascript
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
88
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e55e2f277c2bd8bc5d895a
Tags:
stration spawn virus
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint
Link:
https://www.filescan.io/uploads/68e55ee0f377ab231053ae7d/reports/226e59f9-c6c2-4d36-a782-7f87156f9b29/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e
Verdict:
Malicious
File Type:
js
First seen:
2025-10-07T12:11:00Z UTC
Last seen:
2025-10-08T10:13:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e/results?tab=lookup
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1790911
Signature
Creates processes via WMI
Early bird code injection technique detected
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
JavaScript source code contains functionality to generate code involving a shell, file or stream
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Uses runas.exe to run programs with evaluated privileges
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 GuLoader
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1790911 Sample: Solicitud de cotizacion UNA... Startdate: 07/10/2025 Architecture: WINDOWS Score: 100 39 www.torrentunblock.com 2->39 41 www.randomball.net 2->41 43 6 other IPs or domains 2->43 65 Malicious sample detected (through community Yara rule) 2->65 67 Multi AV Scanner detection for submitted file 2->67 69 Yara detected FormBook 2->69 71 5 other signatures 2->71 10 powershell.exe 34 2->10         started        13 wscript.exe 1 1 2->13         started        15 svchost.exe 1 1 2->15         started        signatures3 process4 dnsIp5 73 Early bird code injection technique detected 10->73 75 Writes to foreign memory regions 10->75 77 Found suspicious powershell code related to unpacking or dynamic code loading 10->77 87 3 other signatures 10->87 18 msiexec.exe 6 10->18         started        21 conhost.exe 10->21         started        23 msiexec.exe 10->23         started        79 Wscript starts Powershell (via cmd or directly) 13->79 81 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->81 83 Suspicious execution chain found 13->83 85 Creates processes via WMI 13->85 25 powershell.exe 14 28 13->25         started        51 127.0.0.1 unknown unknown 15->51 signatures6 process7 dnsIp8 55 Maps a DLL or memory area into another process 18->55 57 Hides threads from debuggers 18->57 28 BLT5Q7znFFuV.exe 18->28 injected 47 drive.google.com 142.250.217.206, 443, 49681, 49691 GOOGLEUS United States 25->47 49 drive.usercontent.google.com 172.217.165.193, 443, 49682, 49692 GOOGLEUS United States 25->49 59 Found suspicious powershell code related to unpacking or dynamic code loading 25->59 61 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 25->61 63 Loading BitLocker PowerShell Module 25->63 31 conhost.exe 25->31         started        signatures9 process10 signatures11 89 Maps a DLL or memory area into another process 28->89 33 runas.exe 28->33         started        process12 signatures13 53 Maps a DLL or memory area into another process 33->53 36 NQlFPoHAPGdN2y.exe 33->36 injected process14 dnsIp15 45 gooder.bar 3.33.130.190, 80 AMAZONEXPANSIONGB United States 36->45
Score:
95%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e
Threat name:
Script-JS.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2025-10-07 18:45:55 UTC
File Type:
Text
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uxcj2zi3dr6z7y5uut63omypzzgu5xiu6ryo4w6lvvcgmrnrv4xa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
08b026f7abf7574f2c01bdfb97e78b406200a874f2638298c489155b84fcb1b2
Formbook
1edf21b9bd2a882923fd14c0febaef2fa5676604dc4a515dbf54e4633c0b8dd2
Formbook
888ac41d73c32f1ba71b9170bf2c9b1cbcef25ed014d2bc0d52eaead6dbbfa86
Formbook
946a35262c7946b1314dfdda75f9f95f08bc35253b3cd070ee8561d8a4d27831
Formbook
ad014d604ccb527054c3e00fbc8f963b916bd22f3b571275c8a149881f4d1daa
Formbook
b42d8673bc49b85b845318b9b46fe480ce9739075b5607bdfa8404c9d4a4699e
Formbook
d510513ccbb33c26a814ac58e781688d20780ee08a85f5962a94866cf988a0a4
Formbook
e837ce85c10c216e724d02358e910fa27e6b1c93dff8e51ed71e54e1970c58ce
Formbook
error
Formbook
f7752fa3cc9f5fcdfc5f0346401907e77494ac55c6c133ee115986cd723ee164
Formbook
ffc8f79b6654ee83f5afac0fa12a5eeb666dc73b11d05c7fba51e7acab5928de
Formbook
+ 1'781 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/251007-xbtfwagp2t/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Badlisted process makes network request
Formbook payload
Formbook
Formbook family
Process spawned unexpected child process
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/a5c49d651b1c7d9fe3b4a4fdb7330fce4d4edd14f470ee5bcbad446645b1af2e

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: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)

File information

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

Comments