MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216. 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: 19


Intelligence 19 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
SHA3-384 hash: c19c8b55bb17cc8df78b3f36e6f6b2be9af7e43ffbd1d0d460708b7126a2619f103ec01d9a7d9c539cd422a7db32012e
SHA1 hash: 183d5ac530612e1c42f2bb010dcf1a09ab21fff7
MD5 hash: 1ea20c62bf74a94ee38ca47620d777d8
humanhash: ohio-six-maryland-winner
File name:Payment Swift Bildirimi.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'203'200 bytes
First seen:2025-11-05 15:27:38 UTC
Last seen:2025-11-05 15:30:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla)
ssdeep 24576:Ntb20pkaCqT5TBWgNQ7aXRwunPQL956A:+Vg5tQ7aXR9cv5
Threatray 2'764 similar samples on MalwareBazaar
TLSH T1A045DF1373DE8361C3725273BA65B701BE7F782506B1F96B2F98093CE920162525EA73
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 cocaman
Tags:exe FormBook payment

Intelligence

File Origin
# of uploads :
3
# of downloads :
116
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216.exe
Verdict:
No threats detected
Analysis date:
2025-11-05 15:29:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f630f41d-659f-4924-829d-430c312c2a75

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/35541/
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690b6d11ea0f3e915c232f5c
Tags:
underscore autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Unauthorized injection to a system process
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-05T01:28:00Z UTC
Last seen:
2025-11-05T11:01:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b2d5714d-19eb-4dc1-8d0d-57f4fe7189b7
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1808670
Signature
Binary is likely a compiled AutoIt script file
Initial sample is a PE file and has a suspicious name
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspicious Double Extension File Execution
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1808670 Sample: Payment Swift Bildirimi.pdf.exe Startdate: 05/11/2025 Architecture: WINDOWS Score: 100 31 www.yeslinea.xyz 2->31 33 www.directavalanche.xyz 2->33 35 15 other IPs or domains 2->35 43 Suricata IDS alerts for network traffic 2->43 45 Yara detected FormBook 2->45 47 Sigma detected: Suspicious Double Extension File Execution 2->47 51 4 other signatures 2->51 11 Payment Swift Bildirimi.pdf.exe 4 2->11         started        signatures3 49 Performs DNS queries to domains with low reputation 33->49 process4 signatures5 61 Binary is likely a compiled AutoIt script file 11->61 63 Writes to foreign memory regions 11->63 65 Maps a DLL or memory area into another process 11->65 67 Sample uses process hollowing technique 11->67 14 svchost.exe 11->14         started        process6 signatures7 69 Maps a DLL or memory area into another process 14->69 17 9krrt44zPXbkn.exe 14->17 injected process8 process9 19 wlanext.exe 13 17->19         started        signatures10 53 Tries to steal Mail credentials (via file / registry access) 19->53 55 Tries to harvest and steal browser information (history, passwords, etc) 19->55 57 Modifies the context of a thread in another process (thread injection) 19->57 59 3 other signatures 19->59 22 Mu7jUClztKiYnO.exe 19->22 injected 25 chrome.exe 19->25         started        27 firefox.exe 19->27         started        process11 dnsIp12 37 www.kixtwtrobrhyrwby.shop 154.19.246.13, 49693, 80 RICHTOPEC-AS-APRichTopECLimitedHK United States 22->37 39 www.fugazidonuts.com 104.21.79.28, 49738, 49739, 49740 CLOUDFLARENETUS United States 22->39 41 8 other IPs or domains 22->41 29 WerFault.exe 4 25->29         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
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/1ea20c62bf74a94ee38ca47620d777d8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-11-05 08:28:09 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ie4uehwvlq7dclkilvtynesq2mu2j4xfaqd6b7g525hoignl6ila._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
formbook
Create hunting rule
Similar samples:
0f5a1d94343f393dbe063e997238d20a5367f96465003bc181d8814bbcd7ba6c
Formbook
170c2b10322d1b2bbd5403091730544828633e2bdf59af1134b1ae1898a8d90c
Formbook
183d51674a5f6425a8a1fba8fbbca176ecb4525d5587d4906737ce7b89e9fcac
Formbook
4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
Formbook
5fcfd8333c4687790ed53e4783d8b2ac2d082059f7f1b14e92dd24e41e831740
Formbook
90b33d8252b9470d19ac4aff278e6470c04bafe0a04cf143b61880257ca13157
Formbook
a21182bf32d320deebafbf52f06c370fe3762ec55793e09df10ce9e27bfe799a
Formbook
afed3f0ece5e60357648bb8ca6634240cf1a71f41147fc09597fa586130ec932
Formbook
c621cdef483f72a72f9e9b3296c85c7c8d064a707dfdd2c11d7fc21d75d123ef
Formbook
d3ad7e22a740b5654dc36d3d803984ad83c9b2627edee55630c5a9816d42c085
Formbook
error
Formbook
+ 2'754 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/251105-swfcjavpal/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8ca03d93-3d90-474a-b8e3-8b8e6eba1e58
Unpacked files
SH256 hash:
4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
MD5 hash:
1ea20c62bf74a94ee38ca47620d777d8
SHA1 hash:
183d5ac530612e1c42f2bb010dcf1a09ab21fff7
Link:
https://www.unpac.me/results/dc041592-cf1e-4acb-8f6b-b19d5c185473/
SH256 hash:
b8103fab1c5e9a0476032027203d337a39dccc46710e8e53df73a5f6f67ab2e3
MD5 hash:
2a8e2dec09241f10ce4d319b10aac4c1
SHA1 hash:
78040d1511a4d31c102c0423a988ac7e088d49e6
Link:
https://www.unpac.me/results/dc041592-cf1e-4acb-8f6b-b19d5c185473/
SH256 hash:
93b35e58eb964c9de7a10dbf9d54042cee23eb99c648db2e77d4aa32aba113bc
MD5 hash:
f22b8401c90b454465c3f8d92e3be92b
SHA1 hash:
f987564a87a786fdaa1949100c4982ec4bf6a379
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/dc041592-cf1e-4acb-8f6b-b19d5c185473/
Parent samples :
183d51674a5f6425a8a1fba8fbbca176ecb4525d5587d4906737ce7b89e9fcac
e2c9efe051cf98faf07f7b8620cbe245018bcbf1779e4cf7cee46be69c8a7991
4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4139421ed55c/report/overview.html
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/4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
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:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover

File information

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

Malspam

Formbook

7z 1434ffad05e041b6b8fb3db75b0d2eb1772c6000d7265415eab71016eb463070

Formbook

Executable exe 4139421ed55c3e312d485d67869250d329a4f2e50407e0fcddd74ee419abf216

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 1434ffad05e041b6b8fb3db75b0d2eb1772c6000d7265415eab71016eb463070
  
Dropped by
SHA256 10bee70d4e0f6828a3a352e207e973cd9870f40e712fdb59c8f750e8cb56e6d6
Cape
Cape
https://www.capesandbox.com/analysis/35541/
  
Dropped by
MD5 7e5f81d927dfdffea9d567e023ea1140
  
Dropped by
MD5 4a647d31488eafe8986f2fca99381206

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