MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6. 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: 14


Intelligence 14 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
SHA3-384 hash: 041ccf9c97f866378335369e91dc4682229664300a4ab6546157290db02a64a1b212925f6ea6fa4c50588193b0c6c5bc
SHA1 hash: fff4aab7cdaa3797c4bba36945b375bd7eee70ae
MD5 hash: e5b271165b4d1154ba8e7e0a1c34fd73
humanhash: vegan-sierra-grey-low
File name:a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
Download: download sample
Signature Formbook
Create hunting rule
File size:1'213'952 bytes
First seen:2025-08-12 14:25:37 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:Ytb20pkaCqT5TBWgNQ7apHtwcyBVguoVZcw1m7yy6A:hVg5tQ7apNwBauoAw1iF5
TLSH T1A145C01373DEC361C7725273BA25B701BEBF782506A1F96B2FD4093DA920162521EA73
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 :
32
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
Verdict:
No threats detected
Analysis date:
2025-08-12 18:55:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d11845e3-d5fa-4035-af8e-b4484e7bc825

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/20654/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689b515afca70bd90e8f11be
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Sending a custom TCP request
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/689b6458397fd3ce6fa65327/reports/b1bcd657-d636-46e8-ac90-c09e2c305b6a/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dd7a3101-d9da-43cc-80a1-cdac5870e0a3
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6/
Verdict:
Malicious
Threat:
Trojan.Win32.Strab
Link:
https://tip.neiki.dev/file/a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-07-24 06:47:11 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u4opc6dg7hljd7ormo2peyepenjmdlpsbzwrb2h4gvk72n6niota._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
unc_loader_036
Create hunting rule
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250812-tcxm5sen4z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/efc28d4b-a7b7-4618-8a7d-74ffed79c027
Unpacked files
SH256 hash:
a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
MD5 hash:
e5b271165b4d1154ba8e7e0a1c34fd73
SHA1 hash:
fff4aab7cdaa3797c4bba36945b375bd7eee70ae
Link:
https://www.unpac.me/results/a699a0e9-2174-4e42-89f1-463260cbdea1/
SH256 hash:
397d955c1756681a9878d8791669ab20f7c0c13379e67e67f5a6c5ab236c7713
MD5 hash:
42e576e893259fedec463bd7fe5a4c5b
SHA1 hash:
334606316c531f274bd5a14baa0e7a2d367b8cf0
Link:
https://www.unpac.me/results/a699a0e9-2174-4e42-89f1-463260cbdea1/
SH256 hash:
9d1f17f2ffddaca32e760b9777af84d4159149773c5022738951eeb0a8bfb7e1
MD5 hash:
0d226c5d291db2e71268ac259b61e881
SHA1 hash:
a51021ccfd9f647751d05d9277c725a61516b1df
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/a699a0e9-2174-4e42-89f1-463260cbdea1/
Parent samples :
da52e72c5a1bd9a54958c4f14e9b51074bae5749ad5e5223bfea581e325f2e94
ef378ff70bc5bfa50c982ffa90b4d2a814f9e0714aa570279b8728a33c966b83
1ac3ac35e5e9edf0989bafdd06f43906591c4e29f0a8d6950fece28110bfaa7e
d66989cba3e79d4803a48476a9d627e88cbc7f66353402388db5f7597e0caf2c
a71cf17866f9d691fdd163b4f2608f2352c1adf20e6d10e8fc3555fd37cd43a6
6e39831edf0c22ef2b7dade2d04ccbeaf0070fbffed1c271a79c1f861044f309
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.

Cape
Cape
https://www.capesandbox.com/analysis/20654/

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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