MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
SHA3-384 hash: f87fa760d0cd02e917270529e19b5ea9303d8c1251431cc42f25c6a84bdc5eaa3605902599995de3b1d43b97cc078a71
SHA1 hash: a3a4e0559431b79c6831fb6940790bd56771e9f4
MD5 hash: 3b971b8ecd24210b4aeab680e1c3aa4e
humanhash: victor-nevada-kitten-salami
File name:a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
Download: download sample
Signature Formbook
Create hunting rule
File size:1'195'520 bytes
First seen:2025-05-09 14:46:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep 24576:ctb20pkaCqT5TBWgNQ7aMPIpdJpL0iODGFqk6A:FVg5tQ7aMs90Al5
Threatray 2'152 similar samples on MalwareBazaar
TLSH T11345D01373DD8361C7B25273BA25B701AEBF782506A5F96B2FD4093DE820122525EB73
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 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 :
346
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
Verdict:
No threats detected
Analysis date:
2025-05-10 02:39:21 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8c9bb5c3-aeb9-40ed-80b8-fb28683fd8d6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.VBS.Obfus-140.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=681e16f94a59e5a2ce036151
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
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 fingerprint keylogger microsoft_visual_cc obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/681e153d0b64e174c41fced6/reports/79ba99d1-164c-4eec-baea-9e685f88e0b7/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5103f1cb-102e-4da2-a02d-48cf114e0c5e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1685823
Signature
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
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
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1685823 Sample: nkOycrHxkk.exe Startdate: 09/05/2025 Architecture: WINDOWS Score: 100 28 www.worrr13.quest 2->28 30 www.hoskel.tokyo 2->30 32 2 other IPs or domains 2->32 42 Suricata IDS alerts for network traffic 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 Yara detected FormBook 2->46 48 Binary is likely a compiled AutoIt script file 2->48 10 nkOycrHxkk.exe 2 2->10         started        signatures3 process4 signatures5 60 Binary is likely a compiled AutoIt script file 10->60 62 Writes to foreign memory regions 10->62 64 Maps a DLL or memory area into another process 10->64 66 Switches to a custom stack to bypass stack traces 10->66 13 svchost.exe 10->13         started        process6 signatures7 68 Maps a DLL or memory area into another process 13->68 16 42z1jeJNpUt8fx.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 ROUTE.EXE 13 16->19         started        process10 signatures11 50 Tries to steal Mail credentials (via file / registry access) 19->50 52 Tries to harvest and steal browser information (history, passwords, etc) 19->52 54 Modifies the context of a thread in another process (thread injection) 19->54 56 3 other signatures 19->56 22 42z1jeJNpUt8fx.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 www.hoskel.tokyo 46.37.111.82, 49695, 49696, 49697 Y-INTERNETGB Spain 22->34 36 www.critai.tokyo 46.37.111.91, 49699, 49700, 49701 Y-INTERNETGB Spain 22->36 38 2 other IPs or domains 22->38 58 Found direct / indirect Syscall (likely to bypass EDR) 22->58 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-04-28 08:26:52 UTC
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=utzebuny3quwoanioanzixpumw2onxntx4l4oiho5yyl6tyhcfuq._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
unc_loader_036
Create hunting rule
Similar samples:
1e13884817a81cddd6049d7e06bcb4756aa49836daab26a8315b6ce47320af8a
Formbook
2744da94da0a5d848f9fa9dc01f13b7040d2eb9305954fdfacf97f4aa9016495
Formbook
4b418e5eb7834e7fee32b5acf0b26100b038524c09f1608c8f6e3db582b95e50
Formbook
5d2614ebe7680070e612547a85691905a88def5e660d1a2ec3a3defc8299c1ec
Formbook
8393b72386d26ce3ba3d0b0abc1f28589c099634bad87647808baee320a8269a
Formbook
844ec96c0d492d38f827fbc71148c7289a743c43b8369a26d1b1f1ca5c392168
Formbook
8ddcd9773b5c9cec6e3d0e4d996038faa74cbe9a971665cf596d8786de25ac01
Formbook
bd4efb4cb6eeaede8eb32674a4a3a6df80266af591861ae95ac29042dff6ac84
Formbook
ea5ad478df7db224610821def4d39b12ba7ef2f7a95fe88c9bc30a135bca5739
Formbook
+ 2'142 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250509-r5elxsgj4x/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/080e1ccf-26c5-4f8d-b92e-f589d6e301fb
Unpacked files
SH256 hash:
a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
MD5 hash:
3b971b8ecd24210b4aeab680e1c3aa4e
SHA1 hash:
a3a4e0559431b79c6831fb6940790bd56771e9f4
Link:
https://www.unpac.me/results/70b346f1-afe2-4e89-a88d-a83cbb205a9a/
SH256 hash:
4cda30ab473f6f236b695b18d46197c9170aef47f2ef725d801d5115e36c18a8
MD5 hash:
cee818218c1c10dffe025ad83c3fe3e9
SHA1 hash:
26f89dce8ce8c03cc749b21c30f548284fb18e91
Link:
https://www.unpac.me/results/70b346f1-afe2-4e89-a88d-a83cbb205a9a/
SH256 hash:
f53e817e816dee49eeb3e8e47dded38d593a5fd1ce88d1fa549d6b6fa7053ac0
MD5 hash:
e54ab60df9b8031450c50874f2230127
SHA1 hash:
7f2589320f562542c83f7b576a0a2320227b2ff4
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/70b346f1-afe2-4e89-a88d-a83cbb205a9a/
Parent samples :
99fe52c557d03c4d43e4eca9ca04b93bff94b776b5e1d18fcafcefb990060504
d35ce0831e91accb0ed6c8ec12123a810420b42008d474c362b7859e3721bcd7
b11fac878adfdcb574cb6e6d8289e3a3f5999be3d109090a186af2c87520f1ce
844ec96c0d492d38f827fbc71148c7289a743c43b8369a26d1b1f1ca5c392168
21ba19c34d2bacf151d6e96e17a0b57e4fa1936332cd336e59b0e4940064f2e2
4a426fd3e122fcc74093e75724e7b0318541cce1d13cc6118e615bd46bab8189
a4f240d1b8dc296701a8701b945df465b4e6ddb3bf17c720eeee30bf4f071169
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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.

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::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
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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