MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7. 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: 15

Intelligence 15 IOCs YARA 27 File information Comments

SHA256 hash:	a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7
SHA3-384 hash:	9de3580c322df798ca5ab0ce1d46bdeac15a6de2b221cec2971dcdaf8fbf53be33faa912587b25a6e08ea4d57d0b5c6f
SHA1 hash:	9276dffc0f83980545ab4139d84a4648411cd054
MD5 hash:	caae82f7ab62ab6c97a37bc39388f7f0
humanhash:	timing-stairway-yellow-cold
File name:	a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'072'640 bytes
First seen:	2025-07-07 14:31:38 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep	24576:+tb20pkaCqT5TBWgNQ7a5KN9Bnh9jP6A:rVg5tQ7a54r3T5
Threatray	4'244 similar samples on MalwareBazaar
TLSH	T17235BF1273DD8361C7B25273BA26B701AEBF782506B1F95B2FD4093DB920122525EB73
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	adrian__luca
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/12934/

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=686bda78c9eb974737676dc1

Tags:

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

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6174b160-d279-4eb7-9a74-f7f6689bfa96

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7

Verdict:

Malware

YARA:

7 match(es)

Tags:

AutoIt Decompiled Executable PE (Portable Executable) Suspect Win 32 Exe x86

Link:

https://app.malva.re/file/caae82f7ab62ab6c97a37bc39388f7f0

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-06-21 00:56:15 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

18 of 24 (75.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ufo7vnwaeny4fw62grymgw4vtpw57nbjtwe3v7hncl7gqt6qbdlq._file

Verdict:

malicious

Label(s):

unc_loader_036

autoit

formbook

Formbook

2a899ee00e6f2b09c002a3dc271e3ec7d15a7c98b8a3d9500f96dfd7fe941f4a

Formbook

32a211990a974cc2acdd1b3814a2f0ace854025a41f56c6fae00c75d334fbec9

Formbook

3c321f4c7feb1233711409ad1fc9371732c24a302d3e5b9cd5e238ab1a638288

Formbook

7392b6a710583060d7f5bd8a3a7573fa0f278a543f961057fec04445d017de3b

Formbook

958d107ae823cd619fa042dcbaaa97155b1cecc092863f998f2ee4dca893beed

Formbook

c76f4cc201813bc9e4a8d5ae27ce0c59b799f02dd48b3e09af20118a8fe18c50

Formbook

c7f7388cba691a5b5d8786804468d00489d228bc887f17768d26faf7df9c78ca

Formbook

f6d72553d533584daf51444fdf44e22bf381c514ad84dbab40aa331ea6e78031

Formbook

fd828c534b0e6ce946192311dd9fadad98e82fcc91fe1f3bdbdc652ccc3fc3d0

Formbook

+ 4'234 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:dy23 discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250707-rwgd6atjt7/

Behaviour

Gathers network information

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

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

Link:

https://app.threat.zone/submission/fe5a7918-4524-4847-8728-406772c44c7d

Unpacked files

SH256 hash:

a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7

MD5 hash:

caae82f7ab62ab6c97a37bc39388f7f0

SHA1 hash:

9276dffc0f83980545ab4139d84a4648411cd054

Link:

https://www.unpac.me/results/b7de1dd4-6fff-4223-ae2c-f69a72e7ea30/

SH256 hash:

d5f45e8d1ebc6e27963fa4cc1bb9ac420801389de2f068a6d470b7c3d20ab51b

MD5 hash:

391726776e5e542e7173a5e15f154a79

SHA1 hash:

5fe9bc77752d45b556fc1b005c528860b5bc2a25

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Formbook

Windows_Trojan_Formbook

Link:

https://www.unpac.me/results/b7de1dd4-6fff-4223-ae2c-f69a72e7ea30/

Parent samples :
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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/a15dfab6c02371c2dbda3470c35b959beddfb4299d89bafced12fe684fd008d7

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:	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:	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/12934/

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_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::CopySid ADVAPI32.dll::FreeSid ADVAPI32.dll::GetLengthSid ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::GetAce
COM_BASE_API	Can Download & Execute components	ole32.dll::CLSIDFromProgID ole32.dll::CoCreateInstance ole32.dll::CoCreateInstanceEx ole32.dll::CoInitializeSecurity ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::mciSendStringW WINMM.dll::timeGetTime WINMM.dll::waveOutSetVolume
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AddAce ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::CheckTokenMembership ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetAclInformation ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_API	Manipulates System Shell	SHELL32.dll::ShellExecuteExW SHELL32.dll::ShellExecuteW SHELL32.dll::SHFileOperationW
WIN32_PROCESS_API	Can Create Process and Threads	ADVAPI32.dll::CreateProcessAsUserW KERNEL32.dll::CreateProcessW ADVAPI32.dll::CreateProcessWithLogonW KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::SetSystemPowerState KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryW KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateHardLinkW IPHLPAPI.DLL::IcmpCreateFile KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameW ADVAPI32.dll::GetUserNameW ADVAPI32.dll::LogonUserW ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_API	Supports Windows Networking	MPR.dll::WNetAddConnection2W MPR.dll::WNetUseConnectionW
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegConnectRegistryW ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW
WIN_USER_API	Performs GUI Actions	USER32.dll::BlockInput USER32.dll::CloseDesktop USER32.dll::CreateMenu USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::FindWindowW

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