MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 bf03d1428f4ab2c1d6e0d5a04ba2c56682d752a5e4cd7bef9da17f87c72b0ae9. 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: 11
| SHA256 hash: | bf03d1428f4ab2c1d6e0d5a04ba2c56682d752a5e4cd7bef9da17f87c72b0ae9 |
|---|---|
| SHA3-384 hash: | afcddc36331ac7cd1dcb487b3e8ffd154aee0079573bd0235a68a7efca3026b02687ec4a4d5fa37ed499ee8bbde65ea9 |
| SHA1 hash: | a33128a87021da6a849c95d321cdba0759dc9d02 |
| MD5 hash: | 378308330eaa9fd9a874dfd4b109aa82 |
| humanhash: | network-arkansas-carbon-snake |
| File name: | file |
| Download: | download sample |
| Signature | Formbook |
| File size: | 461'824 bytes |
| First seen: | 2026-09-19 05:01:27 UTC |
| Last seen: | 2026-09-24 11:44:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | ae9b473bcc2b8ffe6308023f10db626e (2 x Formbook) |
| ssdeep | 12288:fBvxaLLpmrqKO1fwibGzSJe49CaG24LBvxaLLpm+Jby:fLaL14qJYNOE49CaG1LLaL13k |
| TLSH | T174A4D001B2A3A070C89342F0F9749A76596C6D620B74A1CF27B8795BF57C0C2DE3677A |
| TrID | 22.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 22.7% (.EXE) Win64 Executable (generic) (6522/11/2) 17.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 15.7% (.EXE) Win32 Executable (generic) (4504/4/1) 7.0% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| dhash icon | f0f4e0b2f2e4f4d0 (8 x LummaStealer, 1 x CoinMiner, 1 x Rhadamanthys) |
| Reporter |  Bitsight |
| Tags: | b BB2.file dropped-by-gcleaner exe FormBook |
Intelligence
File Origin
# of uploads :
28
# of downloads :
173
Origin country :
USVendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
No threats detected
Analysis date:
2026-09-19 05:27:41 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
adaptive-context anti-debug microsoft_visual_cc
Verdict:
Malicious
Labled as:
Yogi.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-18T21:49:00Z UTC
Last seen:
2026-09-19T02:45:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.SpeedBit.sb Trojan.Win32.Agent.sb Trojan-Dropper.Win32.Injector.sb HEUR:Backdoor.Win32.Blakken.gen Backdoor.Win32.Blakken.sb Trojan-Spy.Win32.Noon.sb
Verdict:
Suspicious
Score:
99%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 32 Exe x86
Threat name:
Win32.Trojan.Blakken
Status:
Malicious
First seen:
2026-09-19 01:47:57 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
14 of 24 (58.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
3/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Program crash
System Location Discovery: System Language Discovery
Unpacked files
SH256 hash:
bf03d1428f4ab2c1d6e0d5a04ba2c56682d752a5e4cd7bef9da17f87c72b0ae9
MD5 hash:
378308330eaa9fd9a874dfd4b109aa82
SHA1 hash:
a33128a87021da6a849c95d321cdba0759dc9d02
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__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| 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: | TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments |
| Reference: | https://cyfare.net/ |
| Rule name: | VECT_Ransomware |
|---|---|
| Author: | Mustafa Bakhit |
| Description: | Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Dropped by
Gcleaner
Delivery method
Distributed via web download
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