MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed. 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: 18

Intelligence 18 IOCs YARA 16 File information Comments

SHA256 hash:	fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed
SHA3-384 hash:	d4dd56643b6f9816ccf475a4809aead52f77d811a6a24f95f3959cc3bf3c01256cdb443e399d34e0f7abf39b9e1c777b
SHA1 hash:	81e7eb3302cbce0233cb38230583d223b0535bd4
MD5 hash:	633f8fb322c4d30811187d4896c4f8d1
humanhash:	ohio-skylark-avocado-december
File name:	PO# 22209942 _ RFQ Amendments _Shipping Doc_FEDEX.....Pdf.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'067'520 bytes
First seen:	2025-02-12 02:16:25 UTC
Last seen:	2025-02-12 10:01:11 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep	24576:ou6J33O0c+JY5UZ+XC0kGso6FaGjX3ktQWY:Cu0c++OCvkGs9FaGDmY
Threatray	8 similar samples on MalwareBazaar
TLSH	T14435AD22B3DD93A0CB669173BF6973057EBF78610630BC5B2F840D79A950161263C7AB
TrID	63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 11.6% (.EXE) Win64 Executable (generic) (10522/11/4) 7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 5.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
File icon (PE):
dhash icon	e4ecccccd4c4cccc (2 x Formbook)
Reporter	threatcat_ch
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

648

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

PO# 22209942 _ RFQ Amendments _Shipping Doc_FEDEX.....Pdf.exe

Verdict:

Suspicious activity

Analysis date:

2025-02-12 02:19:40 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/f33ad82d-92ed-430b-b802-04fb231e5da7

Note:

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

Detection(s):

SecuriteInfo.com.BehavesLike.Win32.Generic.vh.UNOFFICIAL

Verdict:

Malicious

Score:

94.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67ac04c46ddd91410accdec0

Tags:

autorun autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Creating a file

Creating a process from a recently created file

Launching a process

Сreating synchronization primitives

Launching cmd.exe command interpreter

Setting browser functions hooks

Enabling autorun by creating a file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context autoit compiled-script fingerprint keylogger lolbin masquerade microsoft_visual_cc obfuscated packed packed packer_detected phishing remote

Link:

https://www.filescan.io/uploads/67ac04a5c0f303a5682dda56/reports/93c8eb89-0767-404a-8011-c576780a6ca4/overview

Verdict:

Malicious

Labled as:

Doina.Generic

Link:

https://www.hybrid-analysis.com/sample/fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/db99e5ec-f7a0-4dcd-8869-f9bbab7cf354

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1612712

Signature

Antivirus detection for URL or domain

Binary is likely a compiled AutoIt script file

C2 URLs / IPs found in malware configuration

Drops VBS files to the startup folder

Found malware configuration

Initial sample is a PE file and has a suspicious name

Joe Sandbox ML detected suspicious sample

Machine Learning detection for dropped file

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 dropped file

Multi AV Scanner detection for submitted file

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Sigma detected: Drops script at startup location

Sigma detected: Suspicious Double Extension File Execution

Sigma detected: WScript or CScript Dropper

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed/

Threat name:

Win32.Trojan.Autoitinject

Status:

Malicious

First seen:

2025-02-12 01:01:10 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

21 of 36 (58.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7rfznqehahgqq2uydzvdz6hhn5w2gn35bdzpbao4i3ccfaeww7wq._file

Verdict:

malicious

Label(s):

unknown_loader_036

formbook

Formbook

c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73

Formbook

dd82f88cdd4a62e9e9b5a081cbd3f98b542614ee6b0e33c2385817af92c704a1

Formbook

error

Formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:bs84 discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250212-cqq9vaxlav/

Behaviour

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

System Network Configuration Discovery: Internet Connection Discovery

Drops file in Program Files directory

AutoIT Executable

Suspicious use of SetThreadContext

Checks installed software on the system

Drops startup file

Executes dropped EXE

Downloads MZ/PE file

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

trojan

YARA:

SUSP_Imphash_Mar23_3

Link:

https://app.threat.zone/submission/1b21c58b-344a-43f6-a288-e0fa92945d37

Unpacked files

SH256 hash:

fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed

MD5 hash:

633f8fb322c4d30811187d4896c4f8d1

SHA1 hash:

81e7eb3302cbce0233cb38230583d223b0535bd4

Link:

https://www.unpac.me/results/af945269-ede3-4386-9b5c-dc5b614264bc/

SH256 hash:

de67581d4377157bf3c5c7dc95fa21981764c17658529358b765260fff7a126f

MD5 hash:

32fa5cb4a375adfae69cf63df40d773f

SHA1 hash:

484281a3eb97941ebd921600e5706e13cee465db

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/af945269-ede3-4386-9b5c-dc5b614264bc/

Parent samples :

9d29cb978c64e5ad17d72e5cabac60c2e4871924c41a7dc0ccaadba7a428703a
c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73
b265f0b8bf110b2d0a0e5e7c244b0a2287b4f222c1c7f6890a8eef9af4da4ffd
dd82f88cdd4a62e9e9b5a081cbd3f98b542614ee6b0e33c2385817af92c704a1
fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fc4b96c08701/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/fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed

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:	Check_OutputDebugStringA_iat Create hunting rule

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:	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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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:	SUSP_Imphash_Mar23_3 Create hunting rule
Author:	Arnim Rupp (https://github.com/ruppde)
Description:	Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:	Internal Research

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)

File information

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

Malspam

Formbook

rar e933d8d21e6286e2db9a9fef96bf2ba949fa15c809f58a9070de49d4b50bf83a

Formbook

exe fc4b96c08701cd086a981e6a3cf8e76f6da3377d08f2f081dc46c4228096b7ed

(this sample)

Delivery method

Distributed via e-mail attachment

Dropped by

SHA256 e933d8d21e6286e2db9a9fef96bf2ba949fa15c809f58a9070de49d4b50bf83a

Dropped by

MD5 c9929e83098f86dff9e65d143a28e6db

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::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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