MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243. 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: 17


Intelligence 17 IOCs YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
SHA3-384 hash: 2a866cc108b1d270a2a111650ec0ca5c2cefc947cb8068d0ce51432aa1c907f6884a916f643a6cbadb00cc94acc30925
SHA1 hash: 958249cf393abd7534aa7f0174b84feb370e8fa2
MD5 hash: bca5cdabe576a13b1d969b42b5062677
humanhash: mountain-echo-black-robin
File name:rFatura672_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'154'560 bytes
First seen:2026-02-09 14:30:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (393 x Formbook, 119 x AgentTesla, 58 x a310Logger)
ssdeep 24576:H5EmXFtKaL4/oFe5T9yyXYfP1ijXdaXbSRA4WTHw4vX:HPVt/LZeJbInQRaXbSRAVTHw4
TLSH T10E35AE027391D062FFAB92334B5AF6115BBC79260123E62F13981D79BE701B1563E7A3
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
135
Origin country :
BR BR
Vendor Threat Intelligence
Malware configuration found for:
AutoIt
Details
AutoIt
extracted scripts and files
Link:
https://research.acce.ciphertechsolutions.com/results/f979f5c6-e9ee-42d6-ad55-be5531e81ccc/
Malware family:
n/a
ID:
1
File name:
_144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243.exe
Verdict:
No threats detected
Analysis date:
2026-02-09 14:30:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ab76a6d7-fefe-4ecd-8a2e-850cf2205c82

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/52790/
Detection(s):
SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6989ef7f42fd65534ccde5bf
Tags:
underscore autoit emotet
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script cscript evasive fingerprint keylogger lolbin masquerade microsoft_visual_cc msiexec packed
Link:
https://www.filescan.io/uploads/6989ef7b930564ff3c9459fb/reports/793260e6-48e5-4436-a8cb-5dd22f7e6dc2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-09T10:52:00Z UTC
Last seen:
2026-02-11T02:36:00Z UTC
Hits:
~100
Detections:
Trojan-Spy.Win32.Noon.sb Trojan-Dropper.Win32.Injector.sb Trojan.Win32.SpeedBit.sb PDM:Trojan.Win32.Generic Backdoor.Win32.Blakken.sb Trojan.Win32.Zenpak.sb Trojan.Win32.Strab.sb Trojan.Win32.Agent.sb HEUR:Trojan.Script.AUO.gen
Link:
https://opentip.kaspersky.com/144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c3ad072a-3e70-442e-a8c7-8d5b65b00a05
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/bca5cdabe576a13b1d969b42b5062677
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-02-09 14:30:20 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=crft4ti7sy7a7rw5igo7c3eo5ufc3alhe77smkph4gvllqgt6jbq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:oh16 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260209-rvavzsg19b/
Behaviour
Gathers network information
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
MD5 hash:
bca5cdabe576a13b1d969b42b5062677
SHA1 hash:
958249cf393abd7534aa7f0174b84feb370e8fa2
Link:
https://www.unpac.me/results/84cb52bb-9f24-448e-b281-78ab1c2a6517/
SH256 hash:
c366c2cfd84d84b08cacb404acf433cb40615cc420b1de1114fd0231d884e46f
MD5 hash:
585316c8d04804f6613cf8cef8002393
SHA1 hash:
8116790a5b46897bf707783f74067da5bfc11516
Link:
https://www.unpac.me/results/84cb52bb-9f24-448e-b281-78ab1c2a6517/
SH256 hash:
feb373e0f010f3b68cf6b1557a8fc421e51febab0246335af2ed8fe292e1ddd8
MD5 hash:
1f810de0b09b3eb42f856a41eca4c97d
SHA1 hash:
e37d3e082fb957d2650966e2cf700995695b4d4f
Detections:
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
FormBook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/84cb52bb-9f24-448e-b281-78ab1c2a6517/
Parent samples :
8225196d0848e0f36d4ecc8c8ef8ae592c5d172570dd4cd5aa13fbc2daae2fd3
2aacda1b316e079d3ba974dfa6c4a93fe6899ec6c26a17f8f6e881f032726a74
144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
946baa56681d7e954c471671a8eeb9161a208e0e2f1d2c2587eaafcea8d1d5fd
892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7
4071dce074603640a42076b087d03cb563e3172dde0a6b97d05fab3a2bf6f9f6
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/144b3e4d1f96/report/overview.html
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/144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
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
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:TH_Generic_MassHunt_Win_Malware_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Generic Windows malware mass-hunt rule - 2025
Reference:https://cyfare.net/
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe 144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/52790/

Comments