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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0. 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 17 File information Comments
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SHA256 hash: 71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0
SHA3-384 hash: efcce4c6c7a3ac85450ce4a509e32e4f96df8cf5305d0b6069451ad0f1780550c197a22bb34afb0bc10950434b4dd5a7
SHA1 hash: c16c5fd55c9b0a38f0876f021cb4d84b0d2598ec
MD5 hash: c7a4cba729eb699b5602ec9aa56bd599
humanhash: diet-speaker-arkansas-shade
File name:millsCRYPTED_STUB.ps1
Download: download sample
Signature Formbook
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File size:2'244'048 bytes
First seen:2026-09-23 08:18:22 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 24576:T5Kf5OdXFCgikprjq2HWKJ0YvbqDfhC8f4hERZRdc1hhGIoR:i
TLSH T1BEA582A1F25B9914B95F88BE9BB7BAE6CF27845057055C893020FB501F631B3B9DF022
Magika powershell
Reporter abuse_ch
Tags:FormBook ps1

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.32053.BadPs1.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
aspnet_compiler base64 base64 encrypted evasive exploit lolbin obfuscated reconnaissance
Link:
https://www.filescan.io/uploads/6ab38b8f54481d9be9829eb7/reports/531b6ebf-e246-4d53-980f-19af9935c3cb/overview
Verdict:
Malicious
Labled as:
PowerShell/Kryptik.NM trojan
Link:
https://www.hybrid-analysis.com/sample/71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0
Verdict:
Malicious
File Type:
ps1
First seen:
2026-09-22T09:06:00Z UTC
Last seen:
2026-09-23T17:21:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0/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/1976596
Signature
.NET source code contains method to dynamically call methods (often used by packers)
AI detected malicious Powershell script
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
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)
Writes to foreign memory regions
Yara detected FormBook
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1976596 Sample: millsCRYPTED_STUB.ps1 Startdate: 23/09/2026 Architecture: WINDOWS Score: 100 32 www.mewefin.xyz 2->32 34 www.yousayi.com 2->34 36 22 other IPs or domains 2->36 44 Suricata IDS alerts for network traffic 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 52 6 other signatures 2->52 10 powershell.exe 20 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 32->50 process4 signatures5 62 Writes to foreign memory regions 10->62 64 Injects a PE file into a foreign processes 10->64 13 aspnet_compiler.exe 10->13         started        16 aspnet_compiler.exe 10->16         started        18 conhost.exe 10->18         started        20 27 other processes 10->20 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 13->66 68 Maps a DLL or memory area into another process 13->68 70 Queues an APC in another process (thread injection) 13->70 72 Found direct / indirect Syscall (likely to bypass EDR) 13->72 22 jtYXXHn3BvPI.exe 13->22 injected 74 Unusual module load detection (module proxying) 16->74 76 Switches to a custom stack to bypass stack traces 16->76 process8 process9 24 cmdkey.exe 13 22->24         started        signatures10 54 Tries to steal Mail credentials (via file / registry access) 24->54 56 Tries to harvest and steal browser information (history, passwords, etc) 24->56 58 Modifies the context of a thread in another process (thread injection) 24->58 60 3 other signatures 24->60 27 qKEgdJJk7e4li.exe 24->27 injected 30 firefox.exe 24->30         started        process11 dnsIp12 38 hoki138zeus.com 217.174.152.119, 49740, 49741, 49742 TELEHOUSE-ASBG Bulgaria 27->38 40 daniellepassos.online 108.179.193.74, 49716, 49717, 49718 ORACLE-BMC-31898-OracleCorporationUS Brazil 27->40 42 12 other IPs or domains 27->42
Score:
88%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0
Verdict:
inconclusive
YARA:
1 match(es)
Tags:
PowerShell T1059.001
Link:
https://app.malva.re/file/c7a4cba729eb699b5602ec9aa56bd599
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0/
Threat name:
Win32.Trojan.Generic
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Status:
Suspicious
First seen:
2026-09-22 16:34:21 UTC
File Type:
Text (PowerShell)
AV detection:
5 of 36 (13.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oh2dwmwmjusbvheuwjeei7wc3oqapaqmqvnaj67uzbdmy54olpia._file
Verdict:
malicious
Label(s):
Formbook
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Link:
https://reports.threatray.com/eb4e9d0e-13b6-4b03-9985-ca2159c83ba8
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook adware collection discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260923-j719psxz9p/
Behaviour
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: PowerShell
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Badlisted process makes network request
Family: Formbook
Formbook payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0

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
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
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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
Create hunting rule
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:pe_no_import_table
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Description:Detect pe file that no import table
Rule name:RANSOMWARE
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Author:ToroGuitar
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:Sus_CMD_Powershell_Usage
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Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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

PowerShell (PS) ps1 71f43b32cc4d241a9c94b248447ec2dba007820c855a04fbf4c846cc778e5bd0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3921026/
  
Delivery method
Distributed via web download

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