MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da. 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 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da
SHA3-384 hash: 25f68b3a4764f62d82f98708cb1cdaed368d1d16c4f8bef221d39dcea1beaf3a1a5040c79702e74a43f2b23578e252d7
SHA1 hash: 6e585a63cd93520fca6e4e716655034c1db44cc5
MD5 hash: e92080916624e1cffeada5c386aa3b23
humanhash: avocado-maryland-hydrogen-single
File name:1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da
Download: download sample
Signature Formbook
Create hunting rule
File size:1'310'720 bytes
First seen:2025-07-07 14:59:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0b768923437678ce375719e30b21693e (143 x Formbook, 25 x MassLogger, 22 x SnakeKeylogger)
ssdeep 24576:q5EmXFtKaL4/oFe5T9yyXYfP1ijXdamnpqFgogq6iJSE:qPVt/LZeJbInQRampagg
TLSH T1E055CF0233D1D062FFAB92334B56F6115ABC79260127A62F13981D7AFE701B1563E7A3
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 :
24
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/13152/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=686be11b900df8e7f8684f4c
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:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f54c92f6-9c07-4e7c-b078-03b433e6db11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PE (Portable Executable) Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/e92080916624e1cffeada5c386aa3b23
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-06-25 15:51:22 UTC
File Type:
PE (Exe)
Extracted files:
23
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dkemv6z4tzderdmltro4id2aze4kp5vxz6f3sq27n5mt5oqa6hna._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250707-sdn7qawvhv/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/eb89c9fe-328a-4293-8017-3b91761af2c6
Unpacked files
SH256 hash:
1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da
MD5 hash:
e92080916624e1cffeada5c386aa3b23
SHA1 hash:
6e585a63cd93520fca6e4e716655034c1db44cc5
Link:
https://www.unpac.me/results/3f3cc47c-faa7-40c3-a22c-4d9868983dfb/
SH256 hash:
a823cb0373448a8ad389e8986baa9c1422dad6311d035dbdb703987e60ff4a8a
MD5 hash:
f36c1af72dd5f85ad371ee313cefeb24
SHA1 hash:
d4e27f58d1825f9563eabc4f574d5ad7aa0a7026
Link:
https://www.unpac.me/results/3f3cc47c-faa7-40c3-a22c-4d9868983dfb/
SH256 hash:
a81ff553b0cd03ad1dda8a83182e1d23039b9840674793eab982a191a198a9e5
MD5 hash:
3700ea80b259a3d64ae322d934fe9071
SHA1 hash:
853fb8053a110ae44d62ae28b9c9ce47f810759b
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/3f3cc47c-faa7-40c3-a22c-4d9868983dfb/
Parent samples :
d7f1632796adeacbc71c9939b52a451f3a73bb6ee66029f6b3a02f221f3c7cfa
22dbe128971859d5b82e39d31a4683850ed4352d691e311d93786a9013eb6105
9f8c8e1dc340529067e0f938d5179abc22cc9a59079979550cecce6e303fd4de
7aaa109674913e8f80e7c78daa7222e52e167c5be8299f4969111ff604111ab3
6d58e01150564d8c897641a486aa204ff601e1d0f74f00c0cafda21a7a9df618
678955d6ec519c7236ec4bf5ffce789aaa6dafb39b61dee990ae00d14ace4273
924dd5cf9f2dbcaab98b152c906fec913a25334afde2e6e2d511c6960411cee0
4b6d225cdfb1f36691a6e14b3cb1624b93184288132eac7aac1d70dabfa87da2
1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da
e54f04b9a9f575f09b44321344572f94615ec9f0a6ccf7b13fcf4d3d7857c906
79eba7e1d57c11620950da975e790d60cb6e5a02011296e3dfe51d79cb38a281
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/1a88cafb3c9e46488d8b9c5dc40f40c938a7f6b7cf8bb9435f6f593eba00f1da

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: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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
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: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)

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/13152/

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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