MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 205a12c55fed683b2687a61297c8c295a3175533171d29e929969ae3627ca10b. 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 18 File information Comments

SHA256 hash: 205a12c55fed683b2687a61297c8c295a3175533171d29e929969ae3627ca10b
SHA3-384 hash: f868ee2c8a69423a5175af3e6b7afc8364d8eadd0eb3ffeb5e94eb3385acaa762ba7ec2224b2be46eca6a7e5326c6a3c
SHA1 hash: e8acf4e20cef8aed1e2f8c3e4f95714d51788fb8
MD5 hash: c074f271a7ef735213b4e7e373217be0
humanhash: four-butter-blue-king
File name:Encrypted_Script.ps1
Download: download sample
Signature Formbook
File size:1'390'348 bytes
First seen:2025-12-08 19:01:39 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 24576:G0YlGTDZAZVioExO1tnlWEQXQhEAyVhCJSlTZWG4D4QfgsZ6o4tCvJyVciid:EMomOHlWvXHADJ+ZWf34s5eCRccHd
TLSH T1A355334428096E990BBC113460FB1ECE1D758EB5E81EDFECF66C28E613BD6468663C74
Magika powershell
Reporter abuse_ch
Tags:FormBook ps1

Intelligence


File Origin
# of uploads :
1
# of downloads :
76
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
94.9%
Tags:
vmdetect lien
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm aspnet_compiler base64 evasive lolbin obfuscated obfuscated powershell reconnaissance
Verdict:
Malicious
File Type:
ps1
First seen:
2025-12-08T03:47:00Z UTC
Last seen:
2025-12-08T17:21:00Z UTC
Hits:
~10
Detections:
Trojan-Spy.Win32.Noon.sb Trojan.Win32.InjectorNetT.s Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
AI detected malicious Powershell script
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)
Performs DNS queries to domains with low reputation
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)
Uses ping.exe to check the status of other devices and networks
Writes to foreign memory regions
Yara detected FormBook
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1829108 Sample: Encrypted_Script.ps1 Startdate: 08/12/2025 Architecture: WINDOWS Score: 100 35 www.54818532.xyz 2->35 37 www.womenbehindracks.com 2->37 39 11 other IPs or domains 2->39 47 Suricata IDS alerts for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Yara detected FormBook 2->51 55 5 other signatures 2->55 11 powershell.exe 21 2->11         started        signatures3 53 Performs DNS queries to domains with low reputation 35->53 process4 signatures5 65 Writes to foreign memory regions 11->65 67 Injects a PE file into a foreign processes 11->67 14 aspnet_compiler.exe 11->14         started        17 aspnet_compiler.exe 11->17         started        19 conhost.exe 11->19         started        21 29 other processes 11->21 process6 signatures7 69 Maps a DLL or memory area into another process 14->69 23 K85lGpQis.exe 14->23 injected 71 Unusual module load detection (module proxying) 17->71 process8 dnsIp9 41 www.womenbehindracks.com 216.40.34.41, 49728, 49729, 49730 TUCOWSCA Canada 23->41 43 saferstream.cloud 84.32.84.32, 49744, 49745, 49746 NTT-LT-ASLT Lithuania 23->43 45 5 other IPs or domains 23->45 26 PING.EXE 13 23->26         started        process10 signatures11 57 Tries to steal Mail credentials (via file / registry access) 26->57 59 Tries to harvest and steal browser information (history, passwords, etc) 26->59 61 Modifies the context of a thread in another process (thread injection) 26->61 63 3 other signatures 26->63 29 chrome.exe 26->29         started        31 firefox.exe 26->31         started        process12 process13 33 WerFault.exe 4 29->33         started       
Verdict:
inconclusive
YARA:
1 match(es)
Tags:
Base64 Block Contains Base64 Block PowerShell
Threat name:
Script-PowerShell.Spyware.AsyncRAT
Status:
Malicious
First seen:
2025-12-08 19:02:26 UTC
File Type:
Text (PowerShell)
AV detection:
11 of 37 (29.73%)
Threat level:
  2/5
Verdict:
malicious
Label(s):
fantomcrypt
Similar samples:
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook adware discovery execution rat spyware stealer trojan
Behaviour
Modifies Internet Explorer settings
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Badlisted process makes network request
Formbook payload
Formbook
Formbook family
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:detect_powershell
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:dgaagas
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns
Rule name:Sus_CMD_Powershell_Usage
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
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:vmdetect
Author:nex
Description:Possibly employs anti-virtualization techniques

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 205a12c55fed683b2687a61297c8c295a3175533171d29e929969ae3627ca10b

(this sample)

  
Delivery method
Distributed via web download

Comments