MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545. 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: 16

Intelligence 16 IOCs YARA 30 File information Comments

SHA256 hash:	4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545
SHA3-384 hash:	fdbf4c98b0b19941798b5e6b0a6aae3bbeaeecb1ced81c65c9a25cb69e627534a4e12d1e33e66a0c81c8baee8493103f
SHA1 hash:	c563ff933dd402ed4734c5f2030bf0bc8afd46c6
MD5 hash:	47b4b12ff498d2620dd824b86ba20e98
humanhash:	oscar-crazy-seven-king
File name:	RFQ PC25-1301 Product Specifications_PDF.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'452'544 bytes
First seen:	2025-01-15 12:19:44 UTC
Last seen:	2025-02-07 14:06:11 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	948cc502fe9226992dce9417f952fce3 (1'182 x CredentialFlusher, 446 x Formbook, 231 x AgentTesla)
ssdeep	24576:eqDEvCTbMWu7rQYlBQcBiT6rprG8a74mPIiJZ+6/x7me8bQVe:eTvC/MTQYxsWR7a72mM6J7mp8
TLSH	T16165D0027391C022FFAB95334B5AF6514ABC79260123EA1F13981DB9FE705B1563E7A3
TrID	68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 12.5% (.EXE) Win64 Executable (generic) (10522/11/4) 6.0% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
File icon (PE):
dhash icon	aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter	TeamDreier
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

RFQPC25-1301ProductSpecifications_PDF.exe

Verdict:

No threats detected

Analysis date:

2025-01-15 12:23:28 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/e0921cad-e2c7-469f-a07e-d7a1803b1ee3

Note:

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

Detection(s):

SecuriteInfo.com.Trojan.Generic.33203615.28472.17882.UNOFFICIAL

Verdict:

Malicious

Score:

90.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6787a8024487910100df4023

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

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-vm autoit compiled-script cscript evasive fingerprint keylogger lolbin masquerade microsoft_visual_cc mmc monero packed packed packer_detected

Link:

https://www.filescan.io/uploads/6787a810e7a06875ff2137de/reports/577a925b-c023-4801-8d8e-0909507ebc01/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_60%

Link:

https://www.hybrid-analysis.com/sample/4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/29f4a5d9-d3c7-4623-9b2a-4a1f6fb90113

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1591787

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Binary is likely a compiled AutoIt script file

C2 URLs / IPs found in malware configuration

Found API chain indicative of sandbox detection

Found malware configuration

Initial sample is a PE file and has a suspicious name

Machine Learning detection for 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

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/4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545/

Threat name:

Win32.Backdoor.FormBook

Status:

Malicious

First seen:

2025-01-15 05:43:11 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 38 (55.26%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=jl4htjn2kxi7qvkvx3zeeozhh6d56xntdvkasncxfk2ehhqgevcq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:hwu6 discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250115-phra4asmaw/

Behaviour

Suspicious behavior: EnumeratesProcesses

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

Blocklisted process makes network request

Formbook payload

Formbook

Formbook family

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/9c5087fa-8dab-4ac8-8e12-804266517c91

Unpacked files

SH256 hash:

87e6f47fa6d852b506933c5381c45053b2a61e28b2bd2a7ad8873a597625470b

MD5 hash:

8eaca80cd6f0fe4b35870b6077f34f0d

SHA1 hash:

85037e2e200cfef96ea16aebaf8e4f52e9f22cc3

Detections:

FormBook

win_formbook_auto

win_formbook_g0

win_formbook_w0

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/70887399-71ff-4584-b7b7-f6bed28726ad/

Parent samples :
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SH256 hash:

4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545

MD5 hash:

47b4b12ff498d2620dd824b86ba20e98

SHA1 hash:

c563ff933dd402ed4734c5f2030bf0bc8afd46c6

Link:

https://www.unpac.me/results/70887399-71ff-4584-b7b7-f6bed28726ad/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4af879a5ba55/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/4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545

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:	DebuggerException__SetConsoleCtrl 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:	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_detect_tls_callbacks Create hunting rule

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

File information

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

Malspam

Formbook

exe 4af879a5ba55d1f85555bef2423b273f87df5db31d540934572ab4439e062545

(this sample)

Delivery method

Distributed via e-mail attachment

URLhaus

https://urlhaus.abuse.ch/url/3401879/

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::LoadLibraryW KERNEL32.dll::LoadLibraryExW 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::CopyFileExW KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateHardLinkW IPHLPAPI.DLL::IcmpCreateFile KERNEL32.dll::CreateFileW
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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