MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b393bd767c142e171dd1b2928bae16fff2f63b3d319b2c1acb37129d8d538cc9. 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: 17
| SHA256 hash: | b393bd767c142e171dd1b2928bae16fff2f63b3d319b2c1acb37129d8d538cc9 |
|---|---|
| SHA3-384 hash: | ae862bee8f5873682df491ce304f3dae49353875d71f2cf97adfd30158ea4e18927648a54c04631a5aea75e19fedad2a |
| SHA1 hash: | 4fae97e7a419a298bf6b9b0651f3cec84898d2c8 |
| MD5 hash: | 9e9b4bc61cebb52620b08b6c13ceee32 |
| humanhash: | robert-cardinal-north-uranus |
| File name: | rconfirma____odepagamento_PDF.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'011'200 bytes |
| First seen: | 2026-07-20 16:30:37 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'122 x AgentTesla, 20'133 x Formbook, 12'360 x SnakeKeylogger) |
| ssdeep | 24576:tO+LXj/Og3zNx0p/2BouN+OhgNjseUaftqO94iF5P1G5nEj2MPC:tO+LzPxxY/2B0aallqZO5PS+P |
| TLSH | T19C2522A46BE98F06C2FA07F04826D23597B57E1CA062D706CFEAECD734657C056943A3 |
| TrID | 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.6% (.EXE) Win64 Executable (generic) (6522/11/2) 4.5% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9) |
| Magika | pebin |
| Reporter |  FXOLabs |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
1
# of downloads :
214
Origin country :
BRVendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Malware family:
n/a
ID:
1
File name:
PW_infected_confirmação de pagamento_PDF_rar.zip
Verdict:
Suspicious activity
Analysis date:
2026-07-20 16:36:09 UTC
Tags:
arch-exec
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Verdict:
Malicious
Score:
92.5%
Tags:
micro shell spawn
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Launching a process
Creating a file
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
dropper masquerade packed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-20T13:02:00Z UTC
Last seen:
2026-07-22T06:31:00Z UTC
Hits:
~100
Malware family:
Formbook
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.54 Win 32 Exe x86
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Status:
Malicious
First seen:
2026-07-20 16:31:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 24 (70.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
Formbook
Similar samples:
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook adware collection discovery execution persistence privilege_escalation rat spyware stealer trojan
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Enumerates physical storage devices
Event Triggered Execution: Accessibility Features
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
b393bd767c142e171dd1b2928bae16fff2f63b3d319b2c1acb37129d8d538cc9
MD5 hash:
9e9b4bc61cebb52620b08b6c13ceee32
SHA1 hash:
4fae97e7a419a298bf6b9b0651f3cec84898d2c8
SH256 hash:
01ff3e706f0f3928207b5e020eebb9ed38428dfbbf0f8c46aeec328b73519160
MD5 hash:
bbb0d2ca9a21d5a1f6c9059e108ea3ee
SHA1 hash:
5accd45f4a70a26b6ce07e04cc3820e99187a818
SH256 hash:
e3a9e4fdfc4b132b82ca5e5cac68c3e4a841ff28ddfb32d4e47768448c7a7fba
MD5 hash:
1f7d29d846668e83fde95a9675c4030a
SHA1 hash:
60d53f96c590fe812faac26fba4dbf00ecee23f0
SH256 hash:
5fc93c19290f66365b0f6f43c7a506d17dc2853f0018a01e49aaa324c2fee375
MD5 hash:
cd3dda9c7559906bf926af7c5e4efdd8
SHA1 hash:
635ed6d56cfcd03b5795eb68038b6aa3db315c22
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: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| 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: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| 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.
Malspam
Delivery method
Distributed via e-mail attachment
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