MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f
SHA3-384 hash: dde03965ed015fc488d215fbc5d280889a1547b0fc07b4b3410ddd323b2615433160b463cf715e21fa1773eee09cf741
SHA1 hash: e2e1b29faccab7de70264aba75cc120a08cd7506
MD5 hash: cb68ee08ea2a237f95c0e73db9bb923a
humanhash: early-queen-bulldog-blue
File name:Employee Survey Report_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'201'664 bytes
First seen:2025-03-31 00:10:16 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 24576:3u6J33O0c+JY5UZ+XC0kGso6Fa+TZCgddoivmCwAjWY:Ru0c++OCvkGs9Fa+4gXoivmCwY
TLSH T1A945CF2273DDC361CB669173BF69B7016EBF3C614630B85B2F880D7DA950162262D7A3
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 threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
586
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Employee Survey Report_pdf.exe
Verdict:
No threats detected
Analysis date:
2025-03-31 00:13:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/25ba8e3b-06d1-4943-8c9a-325a2b7c18b3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e9e04dcfd0a37f830a7b44
Tags:
underscore 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 cscript evasive fingerprint keylogger lolbin masquerade microsoft_visual_cc packed packed packer_detected wscript
Link:
https://www.filescan.io/uploads/67e9dda4f274bf2d8e297e83/reports/b0c19bff-0ec5-4bf6-85ec-c60477ddd436/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2cba0fa1-0141-40e4-aa60-25bd04cc4a3a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1652428
Signature
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
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)
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: 1652428 Sample: Employee Survey Report_pdf.exe Startdate: 31/03/2025 Architecture: WINDOWS Score: 100 28 www.tropicus.xyz 2->28 30 www.smarak.website 2->30 32 3 other IPs or domains 2->32 42 Multi AV Scanner detection for submitted file 2->42 44 Yara detected FormBook 2->44 46 Binary is likely a compiled AutoIt script file 2->46 50 2 other signatures 2->50 10 Employee Survey Report_pdf.exe 2 2->10         started        signatures3 48 Performs DNS queries to domains with low reputation 28->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 13 svchost.exe 10->13         started        process6 signatures7 68 Maps a DLL or memory area into another process 13->68 16 eSbS3tRYKe.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 chkdsk.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 eSbS3tRYKe.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 aiherobots.org 84.32.84.32, 49734, 49735, 49736 NTT-LT-ASLT Lithuania 22->34 36 www.21098photoit.pics 172.67.159.93, 49742, 49743, 49744 CLOUDFLARENETUS United States 22->36 38 2 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/4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-03-30 23:41:13 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ijkaa7uwhdcdjc64tuu2cbpccnaup3umqxfcees2egq7rjpckixq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unc_loader_036
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250331-agnfgs1qv7/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
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/63d08899-b577-4d74-9f6d-0f5ce57189ab
Unpacked files
SH256 hash:
4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f
MD5 hash:
cb68ee08ea2a237f95c0e73db9bb923a
SHA1 hash:
e2e1b29faccab7de70264aba75cc120a08cd7506
Link:
https://www.unpac.me/results/cf62cab0-4a05-4d1d-87e5-9ea7d6af6865/
SH256 hash:
efcfa286a172f89e2703ac7bb80037d687989f1be768c9a3f9221814793cdf59
MD5 hash:
7e8df4a8b9d5d5a0ef62a23bf961d268
SHA1 hash:
767ce658a14bc7d5609e2bdfbe9dc809cdf7394c
Link:
https://www.unpac.me/results/cf62cab0-4a05-4d1d-87e5-9ea7d6af6865/
SH256 hash:
706ab08dd147b18cb89eef509404e9f48598a07ad1614ded0ddee7dd6db59928
MD5 hash:
cf01c2b01e20f1f58dcaaf4d59254047
SHA1 hash:
496a0c38fce2ecb939a73c2f5071025efa1c3403
Link:
https://www.unpac.me/results/cf62cab0-4a05-4d1d-87e5-9ea7d6af6865/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4254007e9638/report/overview.html
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/4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f

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: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.

Malspam

Formbook

Executable exe 4254007e9638c4348bdc9d29a105e2134147ee8c85ca22125a21a1f8a5e2522f

(this sample)

  
Delivery method
Distributed via e-mail attachment

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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