MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 2a045bbc471a99cecdc8ab5d7a7697455bc722a13b9cc3526c723744dd510811. 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: 16
| SHA256 hash: | 2a045bbc471a99cecdc8ab5d7a7697455bc722a13b9cc3526c723744dd510811 |
|---|---|
| SHA3-384 hash: | 2b86dfa622a3bd567d4333d2b4c680241fb84a470daa767767e417e5be7afa98a4a8525db0ab3006db602e3106647ce2 |
| SHA1 hash: | af8ad1d29a187df94e89a80b87a95474d1189f32 |
| MD5 hash: | 73b15d9195453be47404b18f3b17fdc2 |
| humanhash: | seventeen-crazy-cold-wisconsin |
| File name: | Documents_Ref099583940pdf.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 729'600 bytes |
| First seen: | 2026-03-03 12:00:44 UTC |
| Last seen: | 2026-03-03 12:55:21 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 79c2877b90f1bfb58c906f4d9155285f (2 x Formbook, 1 x PureLogsStealer) |
| ssdeep | 12288:1/XHaQ0m9/r6B+IwtOMtY6W1bjBjqw5LZ1CL8buy5eKULZKdGMXsovUUn0:1/XR2wtOMtYIw5l1q8bukHUVuiUn0 |
| Threatray | 2'719 similar samples on MalwareBazaar |
| TLSH | T169F4BFB976047CE6E67F863BCA965CD813723A638B87A4CE416467D30D633B1EF16804 |
| TrID | 51.9% (.EXE) Win64 Executable (generic) (6522/11/2) 16.1% (.EXE) OS/2 Executable (generic) (2029/13) 15.9% (.EXE) Generic Win/DOS Executable (2002/3) 15.9% (.EXE) DOS Executable (generic) (2000/1) |
| Magika | pebin |
| Reporter |  threatcat_ch |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
522
Origin country :
CHVendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
Documents_Ref099583940pdf.exe
Verdict:
No threats detected
Analysis date:
2026-03-03 12:01:53 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):
Verdict:
Malicious
Score:
99.1%
Tags:
vmdetect virus
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Launching a process
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-vm microsoft_visual_cc
Verdict:
Malicious
Labled as:
Win64/Injector_AGeneric.GF trojan
Verdict:
Malicious
File Type:
exe x64
Detections:
Trojan.Win32.Inject.sb PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan-PSW.Win32.Stealer.sb Trojan.Win64.Agentb.sb Trojan-Spy.Win32.Noon.bqbh
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sets debug register (to hijack the execution of another thread)
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)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Verdict:
Malicious
Threat:
Family.FORMBOOK
Threat name:
Win64.Backdoor.FormBook
Status:
Malicious
First seen:
2026-03-03 12:01:20 UTC
File Type:
PE+ (Exe)
Extracted files:
2
AV detection:
17 of 24 (70.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 2'709 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
2a045bbc471a99cecdc8ab5d7a7697455bc722a13b9cc3526c723744dd510811
MD5 hash:
73b15d9195453be47404b18f3b17fdc2
SHA1 hash:
af8ad1d29a187df94e89a80b87a95474d1189f32
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: | cobalt_strike_tmp01925d3f |
|---|---|
| Author: | The DFIR Report |
| Description: | files - file ~tmp01925d3f.exe |
| Reference: | https://thedfirreport.com |
| 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_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: | ThreadControl__Context |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | TH_Win_ETW_Bypass_2025_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Windows ETW Bypass Detection Rule - 2025 |
| Reference: | https://cyfare.net/ |
| Rule name: | vmdetect |
|---|---|
| Author: | nex |
| Description: | Possibly employs anti-virtualization techniques |
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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