MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791. 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: 13


Intelligence 13 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791
SHA3-384 hash: 14211c625a119bcd9216e92481885bd9ea6049fbf5c001833eef67518d0b14b705b92febef29eb18bb0f41477888f8c8
SHA1 hash: c71594f6a16e3293b6807836f2e3cb7574f88819
MD5 hash: d4503a23ed5dd78948032914d94eaf8d
humanhash: fourteen-cat-angel-six
File name:997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791
Download: download sample
Signature Formbook
Create hunting rule
File size:1'217'536 bytes
First seen:2025-03-10 11:20:50 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:iu6J33O0c+JY5UZ+XC0kGso6FaISs5f00Vlux2l+WY:Eu0c++OCvkGs9FaIHVluxSY
Threatray 329 similar samples on MalwareBazaar
TLSH T1B345AE32B3ED8360C7679133BA6977116EFB3C212530B8772E941D78A960163267D7A3
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
dhash icon 06fc82868682fc06 (2 x AsyncRAT, 1 x Formbook)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
332
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791
Verdict:
Suspicious activity
Analysis date:
2025-03-10 12:24:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/fbbb0fd6-620a-4ee8-93a0-de0a378c3b3f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67cedd681f777fe306089a3c
Tags:
autorun autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script evasive fingerprint fingerprint keylogger lolbin microsoft_visual_cc packed packed packer_detected regedit
Link:
https://www.filescan.io/uploads/67cecb373c5f644bd94b16ab/reports/51fd53d4-8db5-435f-9e6b-396efb072ae3/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791
Result
Verdict:
UNKNOWN
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d58f6326-8311-4909-99f3-f5242d52590b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1634879
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
Drops VBS files to the startup folder
Found direct / indirect Syscall (likely to bypass EDR)
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 dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Sigma detected: Drops script at startup location
Sigma detected: Suspicious Process Parents
Sigma detected: WScript or CScript Dropper
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)
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1634879 Sample: 5Jo27lN4ib.exe Startdate: 11/03/2025 Architecture: WINDOWS Score: 100 41 www.luxurylive.xyz 2->41 43 www.030002837.xyz 2->43 45 22 other IPs or domains 2->45 73 Antivirus detection for URL or domain 2->73 75 Antivirus / Scanner detection for submitted sample 2->75 77 Multi AV Scanner detection for submitted file 2->77 81 6 other signatures 2->81 11 5Jo27lN4ib.exe 6 2->11         started        15 wscript.exe 1 2->15         started        signatures3 79 Performs DNS queries to domains with low reputation 43->79 process4 file5 39 C:\Users\user\AppData\...\brontothere.exe, PE32 11->39 dropped 85 Binary is likely a compiled AutoIt script file 11->85 17 brontothere.exe 3 11->17         started        87 Windows Scripting host queries suspicious COM object (likely to drop second stage) 15->87 21 brontothere.exe 2 15->21         started        signatures6 process7 file8 37 C:\Users\user\AppData\...\brontothere.vbs, data 17->37 dropped 61 Antivirus detection for dropped file 17->61 63 Multi AV Scanner detection for dropped file 17->63 65 Binary is likely a compiled AutoIt script file 17->65 71 2 other signatures 17->71 23 svchost.exe 17->23         started        67 Writes to foreign memory regions 21->67 69 Maps a DLL or memory area into another process 21->69 26 svchost.exe 21->26         started        signatures9 process10 signatures11 83 Maps a DLL or memory area into another process 23->83 28 ngNBZZd3KKkKxY44sMmm.exe 23->28 injected process12 dnsIp13 47 www.luxurylive.xyz.cdn.hstgr.net 92.113.23.143, 49743, 49744, 49745 UKRTELNETUA Ukraine 28->47 49 www.pegji.online 185.151.30.221, 49705, 49706, 49707 TWENTYIGB United Kingdom 28->49 51 9 other IPs or domains 28->51 89 Found direct / indirect Syscall (likely to bypass EDR) 28->89 32 notepad.exe 13 28->32         started        signatures14 process15 signatures16 53 Tries to steal Mail credentials (via file / registry access) 32->53 55 Tries to harvest and steal browser information (history, passwords, etc) 32->55 57 Modifies the context of a thread in another process (thread injection) 32->57 59 2 other signatures 32->59 35 firefox.exe 32->35         started        process17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-02-20 09:03:43 UTC
File Type:
PE (Exe)
Extracted files:
14
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tf5u3qyjl5ismv5amu5u565htdpln7hub6cazytxljhuhr6ym6iq._file
Verdict:
malicious
Label(s):
unc_loader_036
Create hunting rule
Similar samples:
20570ccc8671e4d163bf80afe2a407a188f0bb6416acf095853e0e428fa9eab8
Formbook
297ead591981a4bfe9794ad39930c09c00b5c8ec87a9f65e9979b9067f193804
Formbook
5d614fa1807c2ae2cc2e29a00027213a6294e8258609d06ccf8e8e40512e9a46
Formbook
640b9f47f147b0d38fbcacb6aa057f67a32f8aa3fa4dfc45a83ef439319317a6
Formbook
748debce1ac07b044cd4ce916b04225c2aecaf8a742785b9441f652f368cc473
Formbook
e750cd8aa7d3db023bcdfcf44b7f223d5717dc62c915a228f7e77a431a34aa58
Formbook
e791f6308975dd59d7f0551b48c28052b29a1091435bfcf6f2bad5d1a24193f9
Formbook
error
Formbook
+ 319 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/250310-nf7pmasyc1/
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
Drops startup file
Executes dropped EXE
Loads dropped DLL
Verdict:
Malicious
Tags:
trojan
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/425a3203-04fd-4015-a052-a38086daeb5f
Unpacked files
SH256 hash:
997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791
MD5 hash:
d4503a23ed5dd78948032914d94eaf8d
SHA1 hash:
c71594f6a16e3293b6807836f2e3cb7574f88819
Link:
https://www.unpac.me/results/40b5d91c-1fd1-45d4-a664-914abf2e49b4/
SH256 hash:
d55ddcd782cbf2a12dc53c70efd1089dbc66634ace9144167a2f7e460935a1fe
MD5 hash:
2ff9f42b954972e24ba3b4e36a1407e0
SHA1 hash:
cdbbbecc0986d6a87e82095abc97d559112f4caf
Link:
https://www.unpac.me/results/40b5d91c-1fd1-45d4-a664-914abf2e49b4/
SH256 hash:
f3f85b8d84daa901761b92cf13c7167cc3d41d23e66ac5a125866e62afe3e7f7
MD5 hash:
98ce1c825c7bc37c82f04e906c9cf52e
SHA1 hash:
b5eb7f73675b109e9cdf7a9f3f59ba1f82470fb7
Link:
https://www.unpac.me/results/40b5d91c-1fd1-45d4-a664-914abf2e49b4/
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/997b4dc3095f512657a0653b4efba798deb6fcf40f840ce2775a4f43c7d86791

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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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