MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29. 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: 12


Intelligence 12 IOCs YARA 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29
SHA3-384 hash: 6c2140697f51bf60c0dc96a6746c5c5b7b6647270f19c4cf2288b24b2902855d24e26968148bce8098697e6fba8b9296
SHA1 hash: 6371a19be2c95062fed702c13d848ea9d72d5ecb
MD5 hash: 08d370bfb1e34df2c6f4605a0b5ef002
humanhash: delta-timing-william-one
File name:Express 941929.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:782'124 bytes
First seen:2025-09-30 10:11:22 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 12288:xNGl17lqyy2tvJuA99rL4nlrBdt4azrWGR60V2HXB4bMixfXeM6yD0hAM5/v05g:xOlqU9oisnlrZ4IaGR60YHXB4bM+XeMY
Threatray 1'616 similar samples on MalwareBazaar
TLSH T1D7F42313D12BE6C43E075B7A9B9E2A409AED7FD1518AE7A1FD7003722DA3AC057481C7
Magika zip
Reporter cocaman
Tags:FormBook zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Khan Fahim <statements@cytanet.com.cy>" (likely spoofed)
Received: "from postfix-inbound-2.inbound.mailchannels.net (inbound-egress-10.mailchannels.net [23.83.212.2]) "
Date: "29 Sep 2025 22:10:16 -0700"
Subject: "Draft Received 281123"
Attachment: "Express 941929.zip"

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
Origin country :
CH CH
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Express 941929.exe
File size:1'235'456 bytes
SHA256 hash: 6a552490f5fe075731262f257c9d49392da0534935d28492bcb8a3d8fa41bb0d
MD5 hash: ac78fdb1f2534257ee8ae90b6b72d18e
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68dbac9f40b7da0b4eb8d306
Tags:
autoit emotet
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script evasive fingerprint fingerprint keylogger lolbin microsoft_visual_cc netsh packed reg
Link:
https://www.filescan.io/uploads/68dbacda6c140e5b35ffab4f/reports/0ab01bbc-217b-47b2-b63b-e03a96b575e3/overview
Verdict:
Malicious
Labled as:
Trojan.Downloader
Link:
https://www.hybrid-analysis.com/sample/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
File Type:
zip
First seen:
2025-09-30T01:41:00Z UTC
Last seen:
2025-09-30T21:53:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29/
Threat name:
Script-AutoIt.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-09-30 07:49:21 UTC
File Type:
Binary (Archive)
Extracted files:
29
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lgnpsazn6zv3whqfzciy7uhwbnguexx3p27ikgsz244ut54ibquq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1308208a55709b9cc292c833c1abf7228400e002b1393ccae98e66802acecf1b
Formbook
2595281b5b566d89b9084d6ef9231138fa54ce76a019c9257801ba2fd3958047
Formbook
3196360e6419d66f639687e03ea7093fd479a4975e6223fa44f1e6c545d09ae3
Formbook
5e890ef07e56cfc57a9468b04703a19455b181addb219eb5ed6d2e064b9ca8e9
Formbook
5fafb30d3f716f89509cde081ef64147f8c9f991a139b2a3e25aa5692f3b9495
Formbook
6a552490f5fe075731262f257c9d49392da0534935d28492bcb8a3d8fa41bb0d
Formbook
7bdfffe8dc720208f49a5e88ef7a2ef043c9af8a0995193b0cfe0b02dd5ab667
Formbook
c84d6657d1ce078e5286de001b56fbae877af9a4dece6d5c2e27d1055256b56e
Formbook
error
Formbook
+ 1'606 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook adware discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250930-njl74afj2t/
Behaviour
Modifies Internet Explorer settings
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
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29

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_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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: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: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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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:Windows_Generic_Threat_aeaeb5cf
Create hunting rule
Author:Elastic Security

File information

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

Malspam

Formbook

zip 599af9032df66bbb1e05c8918fd0f60b4d425efb7ebe851a59d73949f7880c29

(this sample)

Formbook

Executable exe 6a552490f5fe075731262f257c9d49392da0534935d28492bcb8a3d8fa41bb0d

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 6a552490f5fe075731262f257c9d49392da0534935d28492bcb8a3d8fa41bb0d
  
Dropping
Formbook
  
Dropping
MD5 ac78fdb1f2534257ee8ae90b6b72d18e

Comments