MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417. 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: 19

Intelligence 19 IOCs YARA 19 File information Comments

SHA256 hash:	dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417
SHA3-384 hash:	07c96797ec9e4e8255e2a8d9169659adf90f3285f61fb2aa8da9d6b8528b01fc3a182253bf3016284e0b65bd319e21e8
SHA1 hash:	0d3a9873c371f5f9fa1dc927fa20fb8e66f4916c
MD5 hash:	c25721935a14aaa96d1235a220db6d65
humanhash:	mountain-orange-blue-kilo
File name:	revised Invoice.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'193'472 bytes
First seen:	2025-11-10 05:16:47 UTC
Last seen:	2025-11-10 11:54:06 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	91d07a5e22681e70764519ae943a5883 (93 x Formbook, 14 x RemcosRAT, 11 x AgentTesla)
ssdeep	24576:etb20pkaCqT5TBWgNQ7aNZPCqLweo/YrlFiimk6A:LVg5tQ7aNZPCqvTrx5
Threatray	2'768 similar samples on MalwareBazaar
TLSH	T1B845C01363DEC365C3725273BA26B701AE7F78250AA5F56B2FD80D3DE920122521E673
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 :

# of downloads :

117

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

revised Invoice.exe

Verdict:

No threats detected

Analysis date:

2025-11-10 05:17:09 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/280aceff-3ed6-4068-b7d4-142084c21bc1

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/36633/

Detection(s):

SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=69117557ac1ae236e178f401

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:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit compiled-script control fingerprint fingerprint formbook hacktool installer-heuristic keylogger lolbin masquerade microsoft_visual_cc packed stealer unsafe

Link:

https://www.filescan.io/uploads/69117552413b181bff1e02ff/reports/3f174a6a-6f1f-43de-a0d2-399597e4ba16/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-11-09T23:22:00Z UTC

Last seen:

2025-11-12T02:13:00Z UTC

Hits:

~1000

Detections:

Trojan.Win32.Auzenpak.sb HEUR:Trojan.Script.AUO.gen Trojan-Dropper.Win32.Dorifel.sbd PDM:Trojan.Win32.Generic Trojan-Spy.Win32.Noon.sb Trojan.Win32.Inject.sb Trojan.Win32.Agent.sb Trojan.Win32.Zenpak.sb Trojan.Win32.Strab.sb

Link:

https://opentip.kaspersky.com/dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a992fd76-3fc1-4619-b98b-3a6d018c1376

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1811098

Signature

Antivirus detection for URL or domain

Binary is likely a compiled AutoIt script file

Initial sample is a PE file and has a suspicious name

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)

Sigma detected: CMSTP Execution Process Creation

Suricata IDS alerts for network traffic

Switches to a custom stack to bypass stack traces

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417

Verdict:

Malware

YARA:

7 match(es)

Tags:

AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86

Link:

https://app.malva.re/file/c25721935a14aaa96d1235a220db6d65

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417/

Verdict:

Malicious

Threat:

Family.FORMBOOK

Link:

https://tip.neiki.dev/file/dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-11-10 02:13:34 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=36zgxz3fg6jlkkhr5257g2pzjj3md5ap7dfvan37rve5b3memqlq._file

Verdict:

malicious

Label(s):

autoit

Formbook

47ea55dc7b9c6e9420f395b201fbf786dc8ae490af10b6e14af6634922bff60f

Formbook

5844ed48c715807758c598cec87812b65bf5c08d3f66c2bd74af768cfb1dc9b5

Formbook

a553ff1d13ae071438bd4bbea08a59917a5dcb635c80024d7438059158b0d39e

Formbook

a8ba34baa2dd999845323fe9f3c2b1401256ffa0a9b8da69362365d06c6f1049

Formbook

adb3ace893f661c1578e335b5247414f87c554922d47660b223c52b3cdb79649

Formbook

dd3ac840eb842bd93fbbdcfb116d5761afc1a46f75fcf255d370d2602426494f

Formbook

+ 2'758 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/251110-fyrgcstkaz/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/a0e1e481-35fa-452f-be80-a5c97bb6a7ae

Unpacked files

SH256 hash:

dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417

MD5 hash:

c25721935a14aaa96d1235a220db6d65

SHA1 hash:

0d3a9873c371f5f9fa1dc927fa20fb8e66f4916c

Link:

https://www.unpac.me/results/3484dea9-3e13-41ab-a506-e5bdc2f93575/

SH256 hash:

f20b0221d2b24d103f9b2c17d5926dad147cf729dccbf4c2ea455bd8bcdbdaf9

MD5 hash:

ef3327e79680e38ded1208ea8981d9c7

SHA1 hash:

c180b0448b2d92ecf725bca5c6b9c93dd6fc23cd

Link:

https://www.unpac.me/results/3484dea9-3e13-41ab-a506-e5bdc2f93575/

SH256 hash:

10ccda6c09cfe391fc3d5bfc56198e785908ce0da7a815b02c0223a922428078

MD5 hash:

6dd2ef688b6775918fc91ece2b031576

SHA1 hash:

691d06465af3feb53fd0f38195fe28d5a18e13a9

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/3484dea9-3e13-41ab-a506-e5bdc2f93575/

Parent samples :

f8b0f66cf4778ac6c5c91358e523994efec3065636e25d9487ec5d87dfbef14b
11cc53e72e2f50f162ecbf30fe545b9fbdec4527ae1fb36522a563e8303894fc
2968dbd64af4b7668158b729f043c71b653bec1d5e4c965359bbc662a4cd3fda
9adeec7138d5d6854c3632ed0560edf5566d75347ffb0b13aa441ba89aed930a
dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417
3dc974c7c0c8f9661e021e383d86122d6053e45f1d42d7164d33a717b9b2bd02
0736bca6f642df69654f042e4ea38fe03d11a9dd6ac5e14fc5b6cba2a1facdfe
a68c8b552dc6416db42a98e331b13d30e6ba04d3dec7c9fe1636f1eebed71912
7051251ec9dccbd7571cb7b3c30e5f64ecf1feb7f3694b38a8307e24a3ba56ab
20d5148fc579f4d5cd970d13bce2f15136c8eb788037ffa40802d4f947946621
d35e98ed5ac77679e813b2a362ce37bc0a247b45758d60327ac5b8a4a048c0ab

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/dfb26be76537/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Formbook

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/dfb26be7653792b528f1eebbf369f94a76c1f40ff8cb50377f8d49d0ed846417

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 Create hunting rule
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 Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__GlobalFlags Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__QueryInfo Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerHiding__Active Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerHiding__Thread Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	dgaagas Create hunting rule
Author:	Harshit
Description:	Uses certutil.exe to download a file named test.txt

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SEH__vectored Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	TH_Generic_MassHunt_Win_Malware_2025_CYFARE Create hunting rule
Author:	CYFARE
Description:	Generic Windows malware mass-hunt rule - 2025
Reference:	https://cyfare.net/

Rule name:	TH_Win_ETW_Bypass_2025_CYFARE Create hunting rule
Author:	CYFARE
Description:	Windows ETW Bypass Detection Rule - 2025
Reference:	https://cyfare.net/