MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 c621cdef483f72a72f9e9b3296c85c7c8d064a707dfdd2c11d7fc21d75d123ef. 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: 21
| SHA256 hash: | c621cdef483f72a72f9e9b3296c85c7c8d064a707dfdd2c11d7fc21d75d123ef |
|---|---|
| SHA3-384 hash: | 85bfa1a0272c3454396b8aae53fb6f1c0c6980a939a0158bf7406d2034d09535354ed176e6ea303e42f3e1a5876db25d |
| SHA1 hash: | 14225156b7d2398e06cecce52edbae5792e40955 |
| MD5 hash: | 59b45720ffdec913119cabc379980082 |
| humanhash: | island-iowa-carpet-stream |
| File name: | Doc-1027202597633.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 1'187'840 bytes |
| First seen: | 2025-10-28 02:04:53 UTC |
| Last seen: | 2025-11-06 11:32:35 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla) |
| ssdeep | 24576:Itb20pkaCqT5TBWgNQ7aRBmd/n+3+yCZ6A:RVg5tQ7aRBU/+uyy5 |
| Threatray | 2'748 similar samples on MalwareBazaar |
| TLSH | T17045DF2363DE8361C7B25173BA5A7702BEBF782506B5F86B2FD4093DE920121521E673 |
| 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 |
| Reporter |  threatcat_ch |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
2
# of downloads :
141
Origin country :
CHVendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
Doc-1027202597633.exe
Verdict:
Malicious activity
Analysis date:
2025-10-28 02:05:21 UTC
Tags:
formbook xloader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Detection(s):
Verdict:
Malicious
Score:
92.5%
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:
Verdict:
Suspicious
Threat level:
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_60%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-27T22:08:00Z UTC
Last seen:
2025-10-29T10:02:00Z UTC
Hits:
~1000
Detections:
Trojan-Spy.Win32.Noon.bnha Trojan-Spy.Noon.HTTP.ServerRequest Trojan-Dropper.Win32.Dorifel.sbd Trojan.Win32.Strab.sb Trojan.Win32.Auzenpak.sb Trojan-PSW.Win32.Stealer.sb Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Backdoor.Agent.HTTP.C&C Trojan-Spy.Win32.Noon.sb Trojan.Win32.Zenpak.sb Trojan.Win32.Inject.sb
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Binary is likely a compiled AutoIt script file
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)
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)
Uses powercfg.exe to modify the power settings
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.AutoitInject
Status:
Malicious
First seen:
2025-10-28 02:17:23 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
18 of 24 (75.00%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
autoit
Similar samples:
+ 2'738 additional samples on MalwareBazaar
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 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:
c621cdef483f72a72f9e9b3296c85c7c8d064a707dfdd2c11d7fc21d75d123ef
MD5 hash:
59b45720ffdec913119cabc379980082
SHA1 hash:
14225156b7d2398e06cecce52edbae5792e40955
SH256 hash:
cf5ebe15cc5786236143560195a43ee171c5ca2f3db9ef5805b6b665cd497e76
MD5 hash:
4ecf58887885258cfe1733612939e7b5
SHA1 hash:
2a56d6b210c861047f5ce0203fc52c1f72686900
Detections:
win_formbook_g0
SH256 hash:
c2f78d4930a6c2eae1fe607210f23128b2cc2df08427f2ad4d930c480b1ccefb
MD5 hash:
422f416af195ea474c3909ef6bd8663e
SHA1 hash:
dceac0d69eb173bd1300dd12c7b05e8959b68d75
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
Distributed via e-mail attachment
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