MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 986de4285a1b205a94670b37918398ea6b02ca39ad15dcda471ffab9a9273548. 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
| SHA256 hash: | 986de4285a1b205a94670b37918398ea6b02ca39ad15dcda471ffab9a9273548 |
|---|---|
| SHA3-384 hash: | 2e550353501afbbc17b8ecf7c116e0d0224a44efc3f9c695b68502597e30bd8f76d85d3ba288f4ff1ec689f7e74d03b3 |
| SHA1 hash: | 6c63475255d081c3104a5dba09b7de71172ec938 |
| MD5 hash: | 2c0ec834823d1de668f8f8ec1587ae0c |
| humanhash: | alanine-pip-ceiling-uranus |
| File name: | c478dba070eef873b89b19170d8a683188f82222f30385f55faef68a8725339b |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'218'560 bytes |
| First seen: | 2025-12-08 15:34:58 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | c1ce208b1192bfcf652c179f34f034d3 (17 x Formbook, 10 x AgentTesla, 3 x a310Logger) |
| ssdeep | 24576:t5EmXFtKaL4/oFe5T9yyXYfP1MAXDzY9Hh0PbsUy+TmTe:tPVt/LZeJbInGizY9HWPLm |
| Threatray | 2'302 similar samples on MalwareBazaar |
| TLSH | T17145BF027381D062FFAB91334F5AF6115BBC79264123AA2F13981D7ABD701B1563E7A3 |
| TrID | 50.4% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4) 19.9% (.EXE) Win64 Executable (generic) (10522/11/4) 9.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.5% (.EXE) Win32 Executable (generic) (4504/4/1) 3.8% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| Reporter |  abuse_ch |
| Tags: | exe FormBook upx-dec |
abuse_ch
UPX decompressed file, sourced from SHA256 c478dba070eef873b89b19170d8a683188f82222f30385f55faef68a8725339bUPX unpacked
This file is the unpacked version of a file that has been packed with UPX. Below is furhter information about the parent (compressed) file.
| File size (compressed) : | 712'192 bytes |
|---|---|
| File size (de-compressed) : | 1'218'560 bytes |
| Format: | win32/pe |
| Packed file: | c478dba070eef873b89b19170d8a683188f82222f30385f55faef68a8725339b |
Intelligence
File Origin
# of uploads :
1
# of downloads :
76
Origin country :
NLVendor Threat Intelligence
Malware configuration found for:
AutoIt
Details
AutoIt
extracted scripts and files
Malware family:
n/a
ID:
1
File name:
c478dba070eef873b89b19170d8a683188f82222f30385f55faef68a8725339b
Verdict:
Malicious activity
Analysis date:
2025-12-09 00:53:55 UTC
Tags:
auto-startup
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
99.9%
Tags:
autorun autoit emotet
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-08T14:35:00Z UTC
Last seen:
2025-12-09T19:26:00Z UTC
Hits:
~10
Gathering data
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
Drops VBS files to the startup folder
Found API chain indicative of sandbox detection
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
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)
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2025-12-08 15:35:39 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
22 of 24 (91.67%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 2'292 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
AutoIT Executable
Suspicious use of SetThreadContext
Drops startup file
Executes dropped EXE
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
986de4285a1b205a94670b37918398ea6b02ca39ad15dcda471ffab9a9273548
MD5 hash:
2c0ec834823d1de668f8f8ec1587ae0c
SHA1 hash:
6c63475255d081c3104a5dba09b7de71172ec938
SH256 hash:
bca978330944842a1e41f96c687c7abb17c7e2c2dead97b32b0fe93350ab6ae4
MD5 hash:
f8a94a2ec81a38282cb918e98d5e6e8c
SHA1 hash:
a98a76b025575087d6a71b4c0f3ed4f12ec97be0
SH256 hash:
cf7d5f0d04da86a44901e988105faf4bed4d1e78a894d0a2a175ec8a21d0d7bc
MD5 hash:
f490fc45ede9b2d5f69b5d4b9b5cafb0
SHA1 hash:
411bd1ab0c940c519c8f3cecf6521c98d2e21cf1
Detections:
win_formbook_g0
Parent samples :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 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_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: | DebuggerCheck__GlobalFlags |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Active |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Thread |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | dgaagas |
|---|---|
| Author: | Harshit |
| Description: | Uses certutil.exe to download a file named test.txt |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| 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: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| 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/ |
| Rule name: | TH_Win_ETW_Bypass_2025_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Windows ETW Bypass Detection 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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