MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959. 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 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959
SHA3-384 hash: 2592a8dac6fa6f55f67712501d85c0471556a2f6d0b483e556470f475abcc70ed18f69c6188b57ee48f76b1906ce6164
SHA1 hash: befcbbf0da80403e0bc501ee1bfd720dfb259978
MD5 hash: 4190d855ee62de144bb482e4adec39bb
humanhash: grey-aspen-lactose-fix
File name:9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959
Download: download sample
Signature Formbook
Create hunting rule
File size:1'199'104 bytes
First seen:2025-04-07 14:01:20 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:Mu6J33O0c+JY5UZ+XC0kGso6FaB9LJOE4irjSWY:Wu0c++OCvkGs9FaB5r4cY
TLSH T12345BE2273DDC360CB769173BF2AB7016EBF7C614630B95B2F880D79A950162162D7A3
TrID 32.2% (.EXE) Win64 Executable (generic) (10522/11/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
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 :
1
# of downloads :
1'072
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
S49602_download (1).eml
Verdict:
Malicious activity
Analysis date:
2025-03-21 20:13:02 UTC
Tags:
attachments attc-unc arch-exec
Link:
https://app.any.run/tasks/e407e84d-cb51-423b-aaba-1b7e194448d9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/1075/
Verdict:
Malicious
Score:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f3dae3a695a0cd1fabac0d
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 fingerprint keylogger microsoft_visual_cc packed packed packer_detected
Link:
https://www.filescan.io/uploads/67f3dae02d430c849e0ab888/reports/49a3a7a7-b347-4de6-a416-f696330b5b02/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4fb92f94-0d97-4e8c-afc4-2005f7c1c966
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1658387
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1658387 Sample: RtpKzWv1ui.exe Startdate: 07/04/2025 Architecture: WINDOWS Score: 100 28 www.jicode.xyz 2->28 30 www.jethashrate.xyz 2->30 32 15 other IPs or domains 2->32 42 Suricata IDS alerts for network traffic 2->42 44 Antivirus detection for URL or domain 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 50 4 other signatures 2->50 10 RtpKzWv1ui.exe 2 2->10         started        signatures3 48 Performs DNS queries to domains with low reputation 30->48 process4 signatures5 62 Binary is likely a compiled AutoIt script file 10->62 64 Writes to foreign memory regions 10->64 66 Maps a DLL or memory area into another process 10->66 68 2 other signatures 10->68 13 svchost.exe 10->13         started        process6 signatures7 70 Maps a DLL or memory area into another process 13->70 16 Bvw21KxW3CBdG4.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 mcbuilder.exe 13 16->19         started        process10 signatures11 52 Tries to steal Mail credentials (via file / registry access) 19->52 54 Tries to harvest and steal browser information (history, passwords, etc) 19->54 56 Modifies the context of a thread in another process (thread injection) 19->56 58 3 other signatures 19->58 22 Bvw21KxW3CBdG4.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 mayaheonline.shop 68.66.216.52, 49765, 49766, 49767 A2HOSTINGUS United States 22->34 36 www.futuw.website 67.223.117.189, 49745, 49746, 49747 VIMRO-AS15189US United States 22->36 38 7 other IPs or domains 22->38 60 Found direct / indirect Syscall (likely to bypass EDR) 22->60 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959/
Threat name:
Win32.Trojan.Vigorf
Create hunting rule
Status:
Malicious
First seen:
2025-03-21 21:10:40 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tngscu3fs7f4vyfaltlgajst2oqd2t5x7kllft25y6hxtsuohfmq._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250407-rb643s1xhs/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
trojan
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/26a96333-5bb4-48c2-abcc-e386ed2adc77
Unpacked files
SH256 hash:
9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959
MD5 hash:
4190d855ee62de144bb482e4adec39bb
SHA1 hash:
befcbbf0da80403e0bc501ee1bfd720dfb259978
Link:
https://www.unpac.me/results/f980a660-6c31-4d12-bb0d-e7b02a89fd54/
SH256 hash:
1eda886bfb6921b8a2014e795cd365cc969f2672ab54bd27c63868a2a4533b2c
MD5 hash:
744fa978f15ce787bead8de33809b7be
SHA1 hash:
7eb1469d33628b5563bf82447ff76d7d278c3c6a
Link:
https://www.unpac.me/results/f980a660-6c31-4d12-bb0d-e7b02a89fd54/
SH256 hash:
674740f8457132132ce4d08179883d2845f812573e48365108033004b8a31fa0
MD5 hash:
2bfa9b194779ef1859a2a8e9cc4b6569
SHA1 hash:
8f525a20263d072891910b792a927e0d7829b1bc
Link:
https://www.unpac.me/results/f980a660-6c31-4d12-bb0d-e7b02a89fd54/
SH256 hash:
f34dda64b0b021a4481b109c92327c4f674e74567026f233b00eb848626f2249
MD5 hash:
eef001d570526050775a5be9f3213882
SHA1 hash:
005a028e1bd83793d957745647a89a2c398edef8
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/f980a660-6c31-4d12-bb0d-e7b02a89fd54/
Parent samples :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 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/9b4d21536597cbcae0a05cd6602653d3a03d4fb7fa96b2cf5dc78f79ca8e3959

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: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: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.

Cape
Cape
https://www.capesandbox.com/analysis/1075/

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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