MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 dbd4d458efddc920806baa4184cfa0aaf0b301b85d62c92b09f751d3f4f74b70. 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: 18
| SHA256 hash: | dbd4d458efddc920806baa4184cfa0aaf0b301b85d62c92b09f751d3f4f74b70 |
|---|---|
| SHA3-384 hash: | 34aaff78e4174916953507102ca311ecff3a815da5e2041442dda74f0b58b258537824b5a3f911457c0c6d0304efb8d0 |
| SHA1 hash: | bfaea7fcb053f56a7f373b070d4db7d37880bbee |
| MD5 hash: | 7a2790335597af11629ef4c43cbbfad0 |
| humanhash: | hamper-failed-coffee-fillet |
| File name: | Remittance Advice.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'167'360 bytes |
| First seen: | 2025-11-20 08:13:58 UTC |
| Last seen: | 2025-12-08 15:16:56 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 91d07a5e22681e70764519ae943a5883 (130 x Formbook, 32 x a310Logger, 27 x AgentTesla) |
| ssdeep | 24576:qtb20pkaCqT5TBWgNQ7auAPlizytWuk2g6A:XVg5tQ7auENkz5 |
| TLSH | T1BF45CF1373DE8361C3725273BA65B701AE7F782506A5F96B2FD8093DE820122525EB73 |
| TrID | 40.3% (.EXE) Win64 Executable (generic) (10522/11/4) 19.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 17.2% (.EXE) Win32 Executable (generic) (4504/4/1) 7.7% (.EXE) OS/2 Executable (generic) (2029/13) 7.6% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| dhash icon | aae2f3e38383b629 (2'644 x Formbook, 1'203 x CredentialFlusher, 912 x AgentTesla) |
| Reporter |  cocaman |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
3
# of downloads :
122
Origin country :
CHVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f4c447df-81b6-4554-a48e-2f446f4b49d9.zip
Verdict:
No threats detected
Analysis date:
2025-11-20 06:55:50 UTC
Tags:
arch-email arch-exec attachments attc-arch
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:
autoit emotet
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script fingerprint keylogger microsoft_visual_cc packed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-19T10:31:00Z UTC
Last seen:
2025-11-22T05:50:00Z UTC
Hits:
~10000
Detections:
Trojan-PSW.Win32.Stealer.sb Trojan.Win32.Zenpak.sb Trojan-Spy.Noon.HTTP.ServerRequest Trojan-Dropper.Win32.Dorifel.sbd Trojan.Win32.Agent.sb Trojan-Spy.Win32.Noon.sb Trojan.Win32.Strab.sb Trojan.Win32.Inject.sb Trojan.Win32.Auzenpak.sb Trojan.Win32.Strab.zoa PDM:Trojan.Win32.Generic
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
96 / 100
Signature
Binary is likely a compiled AutoIt script file
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
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:
100%
Verdict:
Malware
File Type:
PE
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.FORMBOOK
Threat name:
Win32.Trojan.Doina
Status:
Malicious
First seen:
2025-11-19 18:07:19 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
20 of 24 (83.33%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
autoit
formbook
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
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
dbd4d458efddc920806baa4184cfa0aaf0b301b85d62c92b09f751d3f4f74b70
MD5 hash:
7a2790335597af11629ef4c43cbbfad0
SHA1 hash:
bfaea7fcb053f56a7f373b070d4db7d37880bbee
SH256 hash:
98bb3ca9e2a85f3b71fe13294a39ccb3189a17f28097c5f026f36679dc230154
MD5 hash:
77528bae1111971b41d3681df549560a
SHA1 hash:
d9aa223ca3c066dae6c684be7cb980dff347c1ce
SH256 hash:
4b70b5a700aebae072d616fa911ff4055694ba59e013fe886f4fbb5a3e1ecd81
MD5 hash:
45bc5f775a5f7ccf55f0237adef8e6cd
SHA1 hash:
f66f1b38302816dcf15a3618abf1790a0020262d
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: | 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: | Formbook |
|---|---|
| Author: | kevoreilly |
| Description: | Formbook Payload |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| 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: | 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: | YahLover |
|---|---|
| Author: | Kevin Falcoz |
| Description: | YahLover |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Other
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