🤲🏼 NEW | abuse.ch Community Hub! Earn recognition 🏅 for the malware intelligence you share, climb the leaderboards 📈, and connect with like-minded contributors who share your hunting focus 🤝. Ready to unlock your profile? Go to the Community Hub →

MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757. 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: 20


Intelligence 20 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757
SHA3-384 hash: 09236d7fe430d668b0b68afb03ba4ae1b117a4645fee7c9f1171713e22de7ac883e96f3ce034e0ac456dfdb753d1fe6c
SHA1 hash: 8fce50b4c3e4ec8591b00a851e80d1ee26d0afaa
MD5 hash: 1573e12cad7d32bb68c8fbd9bffdf6a1
humanhash: cat-hawaii-speaker-shade
File name:1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757
Download: download sample
Signature Formbook
Create hunting rule
File size:770'048 bytes
First seen:2026-11-09 09:00:20 UTC
Last seen:2026-11-09 09:27:41 UTC
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'359 x AgentTesla, 20'862 x Formbook, 12'418 x SnakeKeylogger)
ssdeep 12288:nETX+KW7aclC/A4pEf4FbVc9M+NSATMkaQsHuNpICHA7iBWAbkb3QgrJ7n54BRfd:L2+NSATMkatONpF+iBRdM6p
TLSH T13AF4DF186667CC02D8762FB19CF0D4B417F26D5AA132C25B2FD60DEB7A23740AD86727
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
88
Origin country :
FR FR
Vendor Threat Intelligence
Malware configuration found for:
NETReactor RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/0bccfff7-1fea-4d47-9f9b-72cba4e955ff/
Malware family:
formbook
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-11-09 22:22:15 UTC
Tags:
netreactor rgbloader loader formbook stealer xloader
Link:
https://app.any.run/tasks/fddaf3ee-6341-4589-aaf3-2ef2d4d8fbba

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/98686/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6af1c9de1492c978625a7d6b
Tags:
infosteal injection virus shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-10-26T23:59:00Z UTC
Last seen:
2026-11-05T05:36:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757/results?tab=lookup
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/2001658
Behaviour
Behavior Graph:
n/a
Verdict:
Malware
YARA:
12 match(es)
Tags:
.Net .Net Obfuscator .Net Reactor Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.60 Win 32 Exe x86
Link:
https://app.malva.re/file/1573e12cad7d32bb68c8fbd9bffdf6a1
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-10-27 08:59:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=d5ddjju7lcf2i55ybvt74zo2x6rpul3jmqxhn4yvumxxbm6oa5lq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:st21 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/261109-kyj5habv3w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Malware Family:
n/a
Verdict:
Suspicious
Tags:
injector evasion
YARA:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Link:
https://app.threat.zone/submission/a5b8b616-498b-4f2a-9893-7d8dd5d8033e
Unpacked files
SH256 hash:
1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757
MD5 hash:
1573e12cad7d32bb68c8fbd9bffdf6a1
SHA1 hash:
8fce50b4c3e4ec8591b00a851e80d1ee26d0afaa
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/e3fb289e-9293-4942-88dd-4580d0e7c2f0/
SH256 hash:
2796e6241d05d7ac37e25fe9ee6f4ec49fa3c24db2c1e8a38b47e3343ebbf35a
MD5 hash:
4f7364edb4bd6ba190ce614156466859
SHA1 hash:
94f3df3f487564cc24643a2601a4c6b942314436
Link:
https://www.unpac.me/results/e3fb289e-9293-4942-88dd-4580d0e7c2f0/
SH256 hash:
b9ef8fef5b455817a626806044ae6567cb1f7bafaa7d17a7724a02a25f90d2d2
MD5 hash:
86ce51cb209a5dcd67d0b47572b4e9e2
SHA1 hash:
b6ea8196e73da138d403048b659127ffd5c0c73f
Link:
https://www.unpac.me/results/e3fb289e-9293-4942-88dd-4580d0e7c2f0/
SH256 hash:
397f04daa39cf0503d5e85c3236241a4f9b9104668dfab1ed68bbffd93e5ad01
MD5 hash:
f2b8197b576f6dcee62696c0d2af5dc2
SHA1 hash:
94536f6159f34dc3592eb7320dd4e6d004279253
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/e3fb289e-9293-4942-88dd-4580d0e7c2f0/
Parent samples :
911b4fe6d1761eed5bc7ade69ac55b3c8f726cbd7e3d613ea34bd2bbf107e9c6
13e589b57234b7eb7b0023cae55629f474051f3c3aaaa3df65b083f8156cb860
f4a95e8c83051329ee4177a3c675a4c1b25019696f794a753cc15f025c5ea3da
d73db781d3ff2da848bf113fd247e991d0ff5a2e885f439be4c33322a4a563f9
c59fcad9483f6f071f0c182c2614345617706f058a2b5016a3af03a661e6618c
cde7c065cb01b7ac4a9ef5ca9ecce6367b7cc2f3ea5040d05f4abd4890ecbc1c
1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757
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/1f4634a69f588ba477b80d67fe65dabfa2fa2f69642e76f315a32f70b3ce0757

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:DotNet_RGB_Embedded_AssemblyLoader_Hunt
Create hunting rule
Author:ShadowOpCode
Description:Hunt .NET bitmap RGB extraction combined with embedded resources and assembly loading
Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:HUNT_NET_Loader_ImagePixel_To_AssemblyLoad
Create hunting rule
Author:Anish Bogati
Description:Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders.
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:WIN_Malware_Derialock_ForgeAuto_3127f957_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects Derialock (pe, etat extrait)
Rule name:WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects XWorm (pe, etat extrait)
Rule name:WIN_Sample_Unique_69354b41
Create hunting rule
Author:Marjoriefort
Description:Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/98686/

Comments