MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa. 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 27 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa
SHA3-384 hash: 40e9e90c75b09dcfaf47fc3805490fcbe5d9f92108825dedc8ef5e30b123acd6b0974fba701acbb129d3ab2c0ac65885
SHA1 hash: e21d944f94f480160b73d73e3e9e8958a19126fb
MD5 hash: 4015839b7480f2e2ed7c9aeee3827370
humanhash: muppet-timing-moon-kitten
File name:Additional Booking 21SEP.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:767'869 bytes
First seen:2025-09-22 15:04:37 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 12288:8pdzytsotYRzzy1Y2tATZfZMTgjNKGSSrxzNmXVJ+FDoQS2U1m89JHGniFuLv:mxyKotYRytSxsgpKw63wDoQS2a9lduLv
TLSH T1FBF423185E8274CB8E6D3582A33FA9A04BFC315C1C21C6C5BE5AB89DA3D93C06D17DE5
Magika zip
Reporter cocaman
Tags:FormBook zip


Avatar
cocaman
Malicious email (T1566.001)
From: "Gandi Siregar <accounting@dodo.com.au>" (likely spoofed)
Received: "from postfix-inbound-1.inbound.mailchannels.net (inbound-egress-11.mailchannels.net [23.83.208.2]) "
Date: "21 Sep 2025 20:50:43 -0400"
Subject: "(XCG1502) ITEM. - 4205774"
Attachment: "Additional Booking 21SEP.zip"

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
CH CH
File Archive Information

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

File name:Additional Booking 21SEP.exe
File size:1'221'120 bytes
SHA256 hash: 1308208a55709b9cc292c833c1abf7228400e002b1393ccae98e66802acecf1b
MD5 hash: 10d1ec7eb3b1706d92f5609daaa6ed2a
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:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d165c172187e372c386a23
Tags:
autoit emotet
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm anti-vm autoit compiled-script evasive findstr fingerprint keylogger lolbin microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/68d165bff224aeb809c9ccfb/reports/400a5d9b-0d37-444e-8186-8fed4afc82f0/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa
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:
2025-09-21T23:48:00Z UTC
Last seen:
2025-09-21T23:48:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa
Verdict:
Malware
YARA:
3 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Zip Archive
Link:
https://app.malva.re/file/4015839b7480f2e2ed7c9aeee3827370
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa/
Threat name:
Script-AutoIt.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-09-22 06:39:39 UTC
File Type:
Binary (Archive)
Extracted files:
29
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xbcdg7ngrjcu4ptwk2jeltnxkpkyagje23fji47w5kytsw6nrp5a._file
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/b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa

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 b844337da68a454e3e76569245cdb753d5801924d6ca9473f6eab1395bcd8bfa

(this sample)

Formbook

Executable exe 1308208a55709b9cc292c833c1abf7228400e002b1393ccae98e66802acecf1b

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 1308208a55709b9cc292c833c1abf7228400e002b1393ccae98e66802acecf1b
  
Dropping
MD5 10d1ec7eb3b1706d92f5609daaa6ed2a

Comments