MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929. 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 16 File information Comments

SHA256 hash:	ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929
SHA3-384 hash:	0fc92f56ac18266d2ec30e2282fd8dbf4ab7cd28c617846f4c25c46262032c11cf81c2a4ba920e30a393ed12f3931a60
SHA1 hash:	408598c810335dee677f740226fa6e0510e02cf4
MD5 hash:	153774d5f34f4867d72008443a901f2b
humanhash:	arkansas-burger-sad-one
File name:	Yeni Teklifpdf.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'191'424 bytes
First seen:	2025-05-26 15:06:55 UTC
Last seen:	2025-05-26 15:06:55 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep	24576:7tb20pkaCqT5TBWgNQ7anpiVwWUegBjWeudAC6A:4Vg5tQ7anpAwWzg5uN5
Threatray	2'279 similar samples on MalwareBazaar
TLSH	T17945CE2363DE8360CBB25273BA557701AEBB7C2506B1F86F2F94393DA931121521E673
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	04214d4d96064106 (1 x Formbook)
Reporter	abuse_ch
Tags:	exe FormBook geo TUR

Intelligence

File Origin

# of uploads :

# of downloads :

469

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

Yeni Teklifpdf.exe

Verdict:

No threats detected

Analysis date:

2025-05-26 15:43:08 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/d153c2b7-e074-4e8d-a85a-09cef4a15b21

Note:

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

Detection(s):

SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL

Verdict:

Malicious

Score:

91.7%

Link:

https://cyber-fortress.com/docs/result/index.php?id=683485a7acf88f5815e72deb

Tags:

autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

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 autoit compiled-script evasive explorer fingerprint fingerprint keylogger lolbin microsoft_visual_cc msconfig netsh packed packed packer_detected wuauclt

Link:

https://www.filescan.io/uploads/683483afe336a33801de5eed/reports/f3ea02f2-b267-4b82-af02-df8195445128/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_60%

Link:

https://www.hybrid-analysis.com/sample/ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/21e3d074-e96b-40cd-b68d-781d4c28528c

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1699320

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

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)

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-05-26 14:32:11 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=54zqb5ma7t42ktaxy4jrtefvv5hxw5chlsumjcphtj2fl2kbpeuq._file

Verdict:

malicious

Label(s):

unc_loader_036

formbook

autoit

Result

Malware family:

n/a

Score:

5/10

Tags:

discovery

Link:

https://tria.ge/reports/250526-spxcga1rs6/

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

AutoIT Executable

Suspicious use of SetThreadContext

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/f11b5661-be86-4e01-ab8e-1bc1c0299bf2

Unpacked files

SH256 hash:

ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929

MD5 hash:

153774d5f34f4867d72008443a901f2b

SHA1 hash:

408598c810335dee677f740226fa6e0510e02cf4

Link:

https://www.unpac.me/results/fdc85e0f-6416-4e8f-adff-a829d04c7083/

SH256 hash:

c84247eddcb394b8e2fc1d00a349400ec79246ed577332d74168168ec4a2fc8e

MD5 hash:

233de04855e1437d4d4bbe1b16c47db9

SHA1 hash:

37c832f5a15e9aa3fe802d8feb1dfddc04312f2d

Link:

https://www.unpac.me/results/fdc85e0f-6416-4e8f-adff-a829d04c7083/

SH256 hash:

e0eedf33d0bddae20376e867a092777c69be9d89d1e950be9f70f56cec7e828b

MD5 hash:

493636ab3c25af5677740a67f2704efe

SHA1 hash:

51d365bb06813ea1c742a5e780a75d69c9889a52

Detections:

win_formbook_g0

Link:

https://www.unpac.me/results/fdc85e0f-6416-4e8f-adff-a829d04c7083/

Parent samples :

ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929
d2e4942924fa6f218f70772eefd5ef57ae369799ba23cd70913f4d0b8fd6da94
9a52ad8f0cc07fb74049ca1e54813734f457e17b10cb6123442ffa20c3f8513e

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/ef3300f580fc/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/ef3300f580fcf9a54c17c7131990b5af4f7b74475ca8c489e79a7455e9417929

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:	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:	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:	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.

No further information available

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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