MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 fb4d2aa18accebccee1bac43a7b0e9b06a1a6aeaf0ac56be41e9904cb29d6c2a. 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: 18
| SHA256 hash: | fb4d2aa18accebccee1bac43a7b0e9b06a1a6aeaf0ac56be41e9904cb29d6c2a |
|---|---|
| SHA3-384 hash: | fff055bb36bb7375f55dd65028ca383e15e642a64f966d16be9436cd9584e34ffc3c33a2fa6f78dd6e8fcf84ec0fcc19 |
| SHA1 hash: | 5208f4dfdc90fc098c2c9f6a43c9849a4487ea6f |
| MD5 hash: | a97484936efdcbf51c43e2e190f3c47e |
| humanhash: | helium-glucose-fillet-butter |
| File name: | fb4d2aa18accebccee1bac43a7b0e9b06a1a6aeaf0ac56be41e9904cb29d6c2a |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'249'792 bytes |
| First seen: | 2025-10-09 15:15:06 UTC |
| Last seen: | 2025-11-06 10:06:18 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 1895460fffad9475fda0c84755ecfee1 (309 x Formbook, 53 x AgentTesla, 36 x SnakeKeylogger) |
| ssdeep | 24576:C5EmXFtKaL4/oFe5T9yyXYfP1ijXdacvFGtUyUlT0dRtlXaer:CPVt/LZeJbInQRacvFGQya |
| Threatray | 1'913 similar samples on MalwareBazaar |
| TLSH | T15C45BF0273C1D062FFAB96334B5AF6115BBC79260123A61F13981D7ABE701B1563E7A3 |
| 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 :
2
# of downloads :
89
Origin country :
HUVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
fb4d2aa18accebccee1bac43a7b0e9b06a1a6aeaf0ac56be41e9904cb29d6c2a
Verdict:
No threats detected
Analysis date:
2025-10-10 01:19:15 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
99.1%
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Sending a custom TCP request
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script explorer fingerprint keylogger lolbin microsoft_visual_cc obfuscated packed packed packer_detected threat
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-29T04:07:00Z UTC
Last seen:
2025-10-08T05:28:00Z UTC
Hits:
~100
Malware family:
Formbook
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Gathering data
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2025-09-29 07:19:48 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
21 of 24 (87.50%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 1'903 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook discovery rat spyware stealer trojan
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:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
fb4d2aa18accebccee1bac43a7b0e9b06a1a6aeaf0ac56be41e9904cb29d6c2a
MD5 hash:
a97484936efdcbf51c43e2e190f3c47e
SHA1 hash:
5208f4dfdc90fc098c2c9f6a43c9849a4487ea6f
SH256 hash:
f9a76ec4ae87cef220c54c5308a65f0b1eccc6303293b2ebd53469ca5f94aa53
MD5 hash:
f8875cbc4ffae9735bc7ec8cdc3291f2
SHA1 hash:
4c7365d7b2bc22f99f025fe61e2dbd1fb7458627
SH256 hash:
ff9f2fa7a9fef63f025479e1719711fa960c1e7b27ffe5e9ec49a4a34ef7d16c
MD5 hash:
bd6c5a02af6f7940d9e9e706f3c5dee9
SHA1 hash:
76852b802e4b8ddfc4d4f17494b5dc6231c33732
Detections:
win_formbook_g0
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| 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 |
|---|---|
| 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 |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | Formbook |
|---|---|
| Author: | kevoreilly |
| Description: | Formbook Payload |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | TH_Generic_MassHunt_Win_Malware_2025_CYFARE |
|---|---|
| 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.
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