MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de. 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

Intelligence 17 IOCs YARA 30 File information Comments

SHA256 hash:	e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de
SHA3-384 hash:	eb6d55dd912206788eb26ef628be476ca507169c453c659f721a731cfafc7802b514e8aadc58059e78bca55aeddbe522
SHA1 hash:	15cca64bb74e57b331d7d72cac02656fbd7d79c1
MD5 hash:	aab1da2122276b290766485ebb655b59
humanhash:	nebraska-lithium-michigan-oven
File name:	COMPROBANTE DE PAGO BBVA 202025Pdf.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'102'336 bytes
First seen:	2025-08-21 07:09:12 UTC
Last seen:	2025-09-05 13:01:58 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep	24576:ytb20pkaCqT5TBWgNQ7aN/3c0e76HM7jNITVjiR6A:/Vg5tQ7aNfc16HM7jAq5
Threatray	2'590 similar samples on MalwareBazaar
TLSH	T13635CF2373DE8361C3B25273BA657741AEBB782506B5F86B2FD4093DE820162521E773
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 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter	abuse_ch
Tags:	BBVA exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

COMPROBANTE DE PAGO BBVA 202025Pdf.exe

Verdict:

No threats detected

Analysis date:

2025-08-21 08:01:59 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/658b8fbe-8bbf-4581-b547-08f6e2147b4f

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/22699/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68a6c649c2f5296a1a2878bf

Tags:

phishing autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

Сreating synchronization primitives

Launching cmd.exe command interpreter

Setting browser functions hooks

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit compiled-script fingerprint keylogger microsoft_visual_cc packed

Link:

https://www.filescan.io/uploads/68a6c7af419c816a6e8e8a16/reports/ca01a378-2835-4080-9e88-ff17dff1d02f/overview

Verdict:

Malicious

Labled as:

AIT:Trojan.Nymeria

Link:

https://www.hybrid-analysis.com/sample/e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/d235e97d-369a-4b08-a529-ac225c77ac51

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1761762

Signature

Binary is likely a compiled AutoIt script file

C2 URLs / IPs found in malware configuration

Found malware configuration

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Modifies the context of a thread in another process (thread injection)

Modifies the prolog of user mode functions (user mode inline hooks)

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de

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/aab1da2122276b290766485ebb655b59

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de/

Threat name:

Win32.Backdoor.FormBook

Status:

Malicious

First seen:

2025-08-20 19:11:52 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

28 of 38 (73.68%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=446alxgkqs5gchb5vrpetddabuz45i67kqfoxpm54hhxrrjikhpa._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:b19x discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250821-h3kkqazzaz/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Formbook payload

Formbook

Formbook family

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/e50cfa19-3e9e-414c-b133-c74ac54276ff

Unpacked files

SH256 hash:

e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de

MD5 hash:

aab1da2122276b290766485ebb655b59

SHA1 hash:

15cca64bb74e57b331d7d72cac02656fbd7d79c1

Link:

https://www.unpac.me/results/8b237e5a-e87f-4003-b7fb-4120097a3611/

SH256 hash:

b091f6ad53118a1f608aefc2be7d47e75a8c3e72e0e118ebcf98e7469bab07aa

MD5 hash:

df816e9879643f7070eafc6328fbfda0

SHA1 hash:

bb66ecc275fdef5bb8d15ead3b400cc05dd1c5df

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/8b237e5a-e87f-4003-b7fb-4120097a3611/

Parent samples :

e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de
51ed3754e84d112a11271f10693058541e7190f28fcddad4388ca52bb22dc081
9a9462484d951513f3df6e77a7960211c539fd00cb887098a3080ceb330dedfe
41eaa4d9ca00fdef1f8ac2b02ffbb0498b8ed8565916247c20b4a41beaa102a8
9e08235a1ee9df4857b8bdb391e552272f34f7d517a1e2aadea599ce7cfb0da4
3a3ae02ddba7f8bd4930c66e0b655e7aef3235181a5292b94eb8be477c0e213a
dfdbf3ff165aa2e92982c0f1ac53c7ee28f7d78fa39027386934ba98fbe5b62b

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/e73c05dcca84/report/overview.html

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/e73c05dcca84ba611c3dac5e498c600d33cea3df540aebbd9de1cf78c52851de

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_AllMal_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication

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:	Formbook Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Formbook in memory
Reference:	internal research

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:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

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:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach

Rule name:	win_formbook_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.formbook.

Rule name:	win_formbook_w0 Create hunting rule
Author:	@malgamy12

Rule name:	YahLover Create hunting rule
Author:	Kevin Falcoz
Description:	YahLover

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape

https://www.capesandbox.com/analysis/22699/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Reviews

ID	Capabilities	Evidence
COM_BASE_API	Can Download & Execute components	ole32.dll::CoCreateInstance
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::SetFileSecurityW
SHELL_API	Manipulates System Shell	SHELL32.dll::ShellExecuteExW SHELL32.dll::SHFileOperationW SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessW ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDiskFreeSpaceW KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileExW KERNEL32.dll::MoveFileW
WIN_BASE_USER_API	Retrieves Account Information	ADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW
WIN_USER_API	Performs GUI Actions	USER32.dll::AppendMenuW USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::OpenClipboard USER32.dll::PeekMessageW USER32.dll::CreateWindowExW

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