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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a81c8dc954bf8a924535d5de08235d54beeddd583fee5e8dd7746660c734d158. 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: 11


Intelligence 11 IOCs YARA 23 File information Comments
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SHA256 hash: a81c8dc954bf8a924535d5de08235d54beeddd583fee5e8dd7746660c734d158
SHA3-384 hash: fb6716c58e270590bbc9fe1702915c4b70dec8330480661a6a5e151e37ec8a87d27533e09f733b82c52e45c3a31c4880
SHA1 hash: aa4e9f268fe6fc63fcae209a0cda9eac3b620037
MD5 hash: f6765a7c6abf57f54e94d36475d9943a
humanhash: alaska-happy-steak-three
File name:ORDER_10_2026.JS
Download: download sample
Signature Formbook
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File size:3'335'366 bytes
First seen:2026-10-07 18:03:06 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:application/javascript
ssdeep 98304:8VXWPNFVBGzN6xhJT9q0oJSjZbN1sooMMIusA4AgU4rrH6dWj/KSrWsfxx1LJzmZ:8VmPNFVgzsBTQ9SjZbPLTuAAgUNoj2sS
TLSH T1B7F5C469174495327B295B0C823AA9205ECAB81334D6CF3935ECF60577ACD17B34EAE3
Magika txt
Reporter abuse_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
185
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Other.Malware-gen.66649537.UNOFFICIAL
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Verdict:
Malicious
Score:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad0510ef4e17c78f7156775
Tags:
autorun virus sage blic
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug dropper evasive masquerade obfuscated packed repaired
Link:
https://www.filescan.io/uploads/6ac689772db7b0ff5b5c8620/reports/38872bb8-96cd-47a5-be05-45ad7c73da6a/overview
Verdict:
Malicious
Labled as:
GT:JS.JS.Downloader.4
Link:
https://www.hybrid-analysis.com/sample/a81c8dc954bf8a924535d5de08235d54beeddd583fee5e8dd7746660c734d158
Verdict:
Malicious
File Type:
js
First seen:
2026-10-07T04:03:00Z UTC
Last seen:
2026-10-09T09:00:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/a81c8dc954bf8a924535d5de08235d54beeddd583fee5e8dd7746660c734d158/results?tab=lookup
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1983752
Signature
Antivirus detection for URL or domain
Benign windows process drops PE files
Drops PE files to the document folder of the user
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
JavaScript source code contains call to eval() to check own source code (likely for evading instrumentation)
JavaScript source code contains functionality to generate code involving a shell, file or stream
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)
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Suspicious Command Patterns In Scheduled Task Creation
Sigma detected: WScript or CScript Dropper
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses whoami command line tool to query computer and username
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1983752 Sample: ORDER_10_2026.JS.js Startdate: 07/10/2026 Architecture: WINDOWS Score: 100 71 www.yousayi.com 2->71 73 www.tahuwalik.shop 2->73 75 7 other IPs or domains 2->75 93 Antivirus detection for URL or domain 2->93 95 Multi AV Scanner detection for submitted file 2->95 97 Yara detected FormBook 2->97 99 7 other signatures 2->99 10 wscript.exe 1 4 2->10         started        14 2Tbk27Rn2.exe 2->14 injected 17 cmd.exe 1 4 2->17         started        19 bOWnLqZWQiIBAS.exe 2->19 injected signatures3 process4 dnsIp5 67 C:\Users\user\...\KABNGWJZNCLQJWEL.exe, PE32 10->67 dropped 69 C:\Users\user\Documents\LEWJQLCNZJWGNBAK, ASCII 10->69 dropped 117 Benign windows process drops PE files 10->117 119 Drops PE files to the document folder of the user 10->119 121 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->121 123 WScript reads language and country specific registry keys (likely country aware script) 10->123 21 KABNGWJZNCLQJWEL.exe 3 10->21         started        77 www.mhsp.mw 102.211.186.77, 49777, 49778, 49779 Sive-Setfu-ICT-Solutions-Pty-LtdZA South Africa 14->77 79 www.yousayi.com 46.30.211.38, 49765, 49766, 49767 ONECOMDK Denmark 14->79 81 5 other IPs or domains 14->81 125 Maps a DLL or memory area into another process 14->125 127 Found direct / indirect Syscall (likely to bypass EDR) 14->127 25 netbtugc.exe 13 14->25         started        27 cmd.exe 1 17->27         started        29 conhost.exe 17->29         started        31 netbtugc.exe 19->31         started        file6 signatures7 process8 file9 65 C:\Users\user\...\LEWJQLCNZJWGNBAK.url, MS 21->65 dropped 101 Found API chain indicative of debugger detection 21->101 103 Modifies the context of a thread in another process (thread injection) 21->103 105 Maps a DLL or memory area into another process 21->105 113 3 other signatures 21->113 33 cmd.exe 1 21->33         started        36 cmd.exe 1 21->36         started        38 cmd.exe 1 21->38         started        40 conhost.exe 21->40         started        107 Tries to steal Mail credentials (via file / registry access) 25->107 109 Tries to harvest and steal browser information (history, passwords, etc) 25->109 111 Unusual module load detection (module proxying) 25->111 42 firefox.exe 25->42         started        44 KABNGWJZNCLQJWEL.exe 1 27->44         started        46 conhost.exe 27->46         started        signatures10 process11 signatures12 83 Uses schtasks.exe or at.exe to add and modify task schedules 33->83 85 Uses whoami command line tool to query computer and username 33->85 48 whoami.exe 1 33->48         started        50 schtasks.exe 1 36->50         started        52 schtasks.exe 1 38->52         started        87 Modifies the context of a thread in another process (thread injection) 44->87 89 Maps a DLL or memory area into another process 44->89 91 Found direct / indirect Syscall (likely to bypass EDR) 44->91 54 cmd.exe 1 44->54         started        57 cmd.exe 1 44->57         started        59 conhost.exe 44->59         started        process13 signatures14 115 Uses whoami command line tool to query computer and username 54->115 61 whoami.exe 1 54->61         started        63 schtasks.exe 1 57->63         started        process15
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a81c8dc954bf8a924535d5de08235d54beeddd583fee5e8dd7746660c734d158/
Threat name:
Script-JS.Downloader.ModiLdr
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Status:
Malicious
First seen:
2026-10-07 12:55:55 UTC
File Type:
Binary
AV detection:
11 of 38 (28.95%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vaoi3skux6fjerjv2xpaqi25ks7o3xkyh7xf5doxortgbrzu2fma._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/5b2e3a43-b07c-4381-ab56-83d3e0c16d42
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook defense_evasion discovery execution persistence privilege_escalation rat spyware stealer trojan
Link:
https://tria.ge/reports/261007-wnanvsdx4r/
Behaviour
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
Executes a command shell one-liner
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
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/a81c8dc954bf8a924535d5de08235d54beeddd583fee5e8dd7746660c734d158

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:CP_Script_Inject_Detector
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
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Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
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Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
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Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait
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Author:Marjoriefort
Description:Detects AgentTesla (inconnu, etat extrait)
Rule name:pe_no_import_table
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Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
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Author:nex
Description:Matched shellcode byte patterns
Rule name:SUSP_VBS_Randomized_ActiveX_Downloader
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Author:Marjoriefort
Description:Dropper VBS obfusque : ActiveXObject a identifiant randomise (20 MAJ), SaveToFile, .Run
Reference:Veille fraicheur 2026-09-14 / grappe VBS randomisee
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
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Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:WIN_Malware_SalatStealer_ForgeAuto_542e717b
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Author:Marjoriefort
Description:Detects SalatStealer (pe, etat binaire)
Rule name:WIN_Malware_Sliver_ForgeAuto_2ddb463c
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Author:Marjoriefort
Description:Detects Sliver (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_2ffc3572
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_5001c94c
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_ce8c5b46
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_ValleyRAT_ForgeAuto_401c5e16
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Author:Marjoriefort
Description:Detects ValleyRAT (pe, etat binaire)

File information

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

Comments