MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 542b483ca926aa71f97e7db19cc42fdb537d103aa7756be623ed922c39c9f112. 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 5 File information Comments

SHA256 hash: 542b483ca926aa71f97e7db19cc42fdb537d103aa7756be623ed922c39c9f112
SHA3-384 hash: b2e7acc8b1919e90ce8a2fab35a3da057333239a9877ef2c29025c11da3b0cb58f622717669b1a68318afe792504be2d
SHA1 hash: 1b601aab3b80dc53addaa4eb2617596fbf4d395f
MD5 hash: 7571e33b3d242c2a95fc53a58cfdd9f4
humanhash: hotel-uniform-hawaii-india
File name:Purchase order - BV.PO-018124-25.exe
Download: download sample
Signature Formbook
File size:1'070'080 bytes
First seen:2025-03-05 07:24:48 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:du6J33O0c+JY5UZ+XC0kGso6FaXMjBtfrVWY:vu0c++OCvkGs9FaXMBt8Y
TLSH T10235BE2273DDC360CB669173BF2AB7016EBF7C614630B85B2F980D7DA950162162D7A3
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 aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
435
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase order - BV.PO-018124-25.exe
Verdict:
Malicious activity
Analysis date:
2025-03-05 07:45:58 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
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
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script fingerprint keylogger masquerade microsoft_visual_cc obfuscated packed packed packer_detected
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found malware configuration
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1629836 Sample: Purchase order - BV.PO-0181... Startdate: 05/03/2025 Architecture: WINDOWS Score: 100 70 Found malware configuration 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 Antivirus / Scanner detection for submitted sample 2->74 76 8 other signatures 2->76 14 Purchase order - BV.PO-018124-25.exe 6 2->14         started        18 wscript.exe 1 2->18         started        process3 file4 66 C:\Users\user\AppData\Local\Temp\molecast, Microsoft 14->66 dropped 68 C:\Users\user\AppData\Local\...\avenses.exe, PE32 14->68 dropped 100 Binary is likely a compiled AutoIt script file 14->100 20 avenses.exe 3 14->20         started        102 Windows Scripting host queries suspicious COM object (likely to drop second stage) 18->102 24 avenses.exe 2 18->24         started        signatures5 process6 file7 64 C:\Users\user\AppData\Roaming\...\avenses.vbs, data 20->64 dropped 82 Antivirus detection for dropped file 20->82 84 Multi AV Scanner detection for dropped file 20->84 86 Binary is likely a compiled AutoIt script file 20->86 88 Drops VBS files to the startup folder 20->88 26 avenses.exe 2 20->26         started        29 avenses.exe 24->29         started        signatures8 process9 signatures10 94 Binary is likely a compiled AutoIt script file 26->94 31 avenses.exe 2 26->31         started        34 avenses.exe 29->34         started        process11 signatures12 104 Binary is likely a compiled AutoIt script file 31->104 36 avenses.exe 2 31->36         started        39 avenses.exe 34->39         started        process13 signatures14 80 Binary is likely a compiled AutoIt script file 36->80 41 avenses.exe 2 36->41         started        44 avenses.exe 39->44         started        process15 signatures16 92 Binary is likely a compiled AutoIt script file 41->92 46 avenses.exe 2 41->46         started        49 avenses.exe 44->49         started        process17 signatures18 98 Binary is likely a compiled AutoIt script file 46->98 51 avenses.exe 2 46->51         started        54 avenses.exe 49->54         started        process19 signatures20 78 Binary is likely a compiled AutoIt script file 51->78 56 avenses.exe 2 51->56         started        59 avenses.exe 54->59         started        process21 signatures22 90 Binary is likely a compiled AutoIt script file 56->90 61 avenses.exe 2 56->61         started        process23 signatures24 96 Binary is likely a compiled AutoIt script file 61->96
Threat name:
Win32.Trojan.AutoitInject
Status:
Malicious
First seen:
2025-03-04 09:45:22 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook unc_loader_036
Similar samples:
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
AutoIT Executable
Drops startup file
Executes dropped EXE
Loads dropped DLL
Verdict:
Malicious
Tags:
trojan
YARA:
SUSP_Imphash_Mar23_3
Unpacked files
SH256 hash:
542b483ca926aa71f97e7db19cc42fdb537d103aa7756be623ed922c39c9f112
MD5 hash:
7571e33b3d242c2a95fc53a58cfdd9f4
SHA1 hash:
1b601aab3b80dc53addaa4eb2617596fbf4d395f
SH256 hash:
f3483a2e6be413e58b06fb59ae11733b2dc48b4ba3b62cb94f5594cb8ffff4b2
MD5 hash:
c2fb127c9db2f27901d4b9644035b3dd
SHA1 hash:
1c01d310b2d3a14b1b3b7c23951eb18fbeb7931e
Detections:
win_formbook_w0 win_formbook_g0 win_formbook_auto FormBook Formbook Windows_Trojan_Formbook
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
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
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:SUSP_Imphash_Mar23_3
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
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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