MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b. 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: 16


Intelligence 16 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b
SHA3-384 hash: 8791107728f5a19c480841a53ce8b2d4ac516856d19c751c69ffc0edc16d5990554d1d8202c585b365076aa6f97f0e86
SHA1 hash: 30f04b1ec1697df18df6f27f50476387332141e7
MD5 hash: ca0f6270a0a1bd2a74b57555541667ca
humanhash: bluebird-oscar-social-cup
File name:3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b
Download: download sample
Signature Formbook
Create hunting rule
File size:1'272'832 bytes
First seen:2025-10-10 06:53:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (341 x Formbook, 89 x AgentTesla, 56 x a310Logger)
ssdeep 24576:l5EmXFtKaL4/oFe5T9yyXYfP1ijXdaGM3O7+1iy0esP4F:lPVt/LZeJbInQRaGeBAt
TLSH T16A45AE03738D826EFF9B91322A76E231467C6F270123A51F32D85D7DB9701A1563E6E2
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 adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
103
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b.exe
Verdict:
No threats detected
Analysis date:
2025-10-10 07:34:33 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7873d15c-5aa7-46ea-a22e-66d48be02001

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/32228/
Detection(s):
SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68e8afbb777ae46bec40f13c
Tags:
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
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit cmdkey compiled-script fingerprint fingerprint keylogger lolbin microsoft_visual_cc msiexec obfuscated packed packed packer_detected threat
Link:
https://www.filescan.io/uploads/68e8bba071883144ef2ffb50/reports/a2a7c690-bf55-4e46-aceb-8ba0b0498cb8/overview
Verdict:
Malicious
Labled as:
Cerbu.Generic
Link:
https://www.hybrid-analysis.com/sample/3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-17T12:41:00Z UTC
Last seen:
2025-09-29T15:28:00Z UTC
Hits:
~100
Detections:
VHO:Backdoor.Win32.Agent.gen PDM:Trojan.Win32.Generic Trojan-Spy.Win32.Noon.sb Trojan.Win32.Strab.sb Trojan.Win32.Inject.sb HEUR:Trojan.Script.AUO.gen
Link:
https://opentip.kaspersky.com/3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/77bfb20a-50ef-4194-b641-c226151cda7b
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b
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/ca0f6270a0a1bd2a74b57555541667ca
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-09-17 16:09:22 UTC
File Type:
PE (Exe)
Extracted files:
14
AV detection:
28 of 36 (77.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h36n3n4bn4qx5ahzzzbzdvn7u4swscgzgnwr2ewbvw4upl2fjunq._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 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/251010-jqxvyswway/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/83ee1f8d-c900-46ed-bae4-252bed2d0396
Unpacked files
SH256 hash:
3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b
MD5 hash:
ca0f6270a0a1bd2a74b57555541667ca
SHA1 hash:
30f04b1ec1697df18df6f27f50476387332141e7
Link:
https://www.unpac.me/results/d8102ed3-cf5f-4133-90ad-a5f10e035146/
SH256 hash:
57225c31248a4d7dbb90d08161bb53fe02c9b5029ad2e146f5499cee05752238
MD5 hash:
3cbd723aa454dd583d7831680aada753
SHA1 hash:
a8b4ca243955b9f28c3e135e0d44a838fa33bc4a
Link:
https://www.unpac.me/results/d8102ed3-cf5f-4133-90ad-a5f10e035146/
SH256 hash:
f72a16478d9d85103103d1200a967b41129d0ccf72270b3164dce48ae0361d6e
MD5 hash:
171e56929849f011d764394b2c8bc923
SHA1 hash:
95900f840026e21a3db20ad95ec90161b6fa1983
Link:
https://www.unpac.me/results/d8102ed3-cf5f-4133-90ad-a5f10e035146/
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/3efcddb7816f217e80f9ce4391d5bfa7256908d9336d1d12c1adb947af454d1b

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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: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/

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/32228/

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