MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 759388bf61a6134039a3bc1577bf1650b2f0f7d65cd43c49b3b8010f642a67fd. 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: 13
| SHA256 hash: | 759388bf61a6134039a3bc1577bf1650b2f0f7d65cd43c49b3b8010f642a67fd |
|---|---|
| SHA3-384 hash: | 4f9ddf079859ffcf27bfe38fe705a4d4d50851483b6314d00f99c4e97d565c1cf4f4a2b57d1e954776e8816e0e001e23 |
| SHA1 hash: | 8fa16f7725b5fc53792d05d6359b217e878037f2 |
| MD5 hash: | 527b432b70eb9099bd86b1e6b5385865 |
| humanhash: | finch-rugby-north-speaker |
| File name: | SecuriteInfo.com.Win64.MalwareX-gen.69955482 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'077'248 bytes |
| First seen: | 2026-03-23 06:25:45 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| ssdeep | 12288:Ijn+iLVFHCxMhvOsdXF5RS4uOaF700CG3wixIzKdygt5vaUq9RqYb5LdqxA4l9vL:6+wF4MJlbReCG3Byc/jvapnqYb5msq |
| Threatray | 52 similar samples on MalwareBazaar |
| TLSH | T185350111A7ABDC03C5BA1BB556D1E03403F49E4EE41AC38B4FDE2EE73A2A7851985353 |
| TrID | 33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| Reporter |  SecuriteInfoCom |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
169
Origin country :
FRVendor Threat Intelligence
Malware configuration found for:
NETReactor
Details
NETReactor
decrypted strings
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Win64.MalwareX-gen.69955482
Verdict:
No threats detected
Analysis date:
2026-03-23 06:27:45 UTC
Tags:
netreactor amsi-bypass
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
Verdict:
Malicious
Score:
94.1%
Tags:
virus krypt msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
krypt net_reactor obfuscated packed packed vbnet
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x64
Verdict:
Unknown
Score:
100%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Status:
Malicious
First seen:
2026-03-23 04:50:13 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
10
AV detection:
18 of 24 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 42 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
SmartAssembly .NET packer
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
759388bf61a6134039a3bc1577bf1650b2f0f7d65cd43c49b3b8010f642a67fd
MD5 hash:
527b432b70eb9099bd86b1e6b5385865
SHA1 hash:
8fa16f7725b5fc53792d05d6359b217e878037f2
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: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| 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: | NET |
|---|---|
| Author: | malware-lu |
| 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: | 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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