MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c
SHA3-384 hash: 562958b452183a34d5a5d002f7d6de440f2110719b6b6c615ff4cea07914b19c3a1b63078a2d9ab72eb3bc0a33d64f54
SHA1 hash: f5d944f771b890e7c0f88f743eb79654fe402228
MD5 hash: 81bfe3b3204ede1fca418e44aa19b310
humanhash: table-lemon-virginia-fish
File name:rStructuralDrawingsforOutdoorRestaurantKidsPool.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:5'078'408 bytes
First seen:2025-05-20 09:30:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 49152:apm5RPR1VVpR72SaMkpux0ztBG4mmvlg9tj:H5Rp1V7R729Dxgb
TLSH T1A0369516FBDA8F92C545337FC4B749153776EB86A323D727365A23A90C0237A4B84683
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
535
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rStructuralDrawingsforOutdoorRestaurantKidsPool.exe
Verdict:
Malicious activity
Analysis date:
2025-05-20 12:02:03 UTC
Tags:
netreactor purecrypter auto-startup
Link:
https://app.any.run/tasks/0eea04e4-58b9-4c0f-9f16-ee7417344b71

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.20083.18082.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=682c4c1f2f280a98fb4231d9
Tags:
injection autorun virus msil
Result
Verdict:
Clean
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 invalid-signature obfuscated signed
Link:
https://www.filescan.io/uploads/682c4bee0de036ed65acad5c/reports/4ca9104f-0e7d-4550-be16-64a4a501a7e8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/bc90020b-fb8c-4f2a-ae63-a35b163fedbb
Result
Threat name:
FormBook, ResolverRAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1694766
Signature
.NET source code contains potential unpacker
Detected potential unwanted application
Drops PE files with benign system names
Drops VBS files to the startup folder
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: System File Execution Location Anomaly
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected ResolverRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1694766 Sample: rStructuralDrawingsforOutdo... Startdate: 20/05/2025 Architecture: WINDOWS Score: 100 42 www.u90hm.top 2->42 54 Suricata IDS alerts for network traffic 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 Yara detected ResolverRAT 2->58 60 10 other signatures 2->60 11 wscript.exe 1 2->11         started        14 rStructuralDrawingsforOutdoorRestaurantKidsPool.exe 15 5 2->14         started        signatures3 process4 dnsIp5 64 Injects code into the Windows Explorer (explorer.exe) 11->64 66 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->66 18 explorer.exe 14 2 11->18         started        44 158.247.250.251, 49693, 49696, 80 FEWPBUS United States 14->44 36 C:\Users\user\AppData\Roaming\explorer.exe, PE32 14->36 dropped 38 C:\Users\...\explorer.exe:Zone.Identifier, ASCII 14->38 dropped 40 C:\Users\user\AppData\...\explorer.vbs, ASCII 14->40 dropped 68 Drops VBS files to the startup folder 14->68 70 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 14->70 72 Drops PE files with benign system names 14->72 74 Injects a PE file into a foreign processes 14->74 21 rStructuralDrawingsforOutdoorRestaurantKidsPool.exe 14->21         started        file6 signatures7 process8 signatures9 46 System process connects to network (likely due to code injection or exploit) 18->46 48 Multi AV Scanner detection for dropped file 18->48 50 Injects code into the Windows Explorer (explorer.exe) 18->50 52 Injects a PE file into a foreign processes 18->52 23 explorer.exe 18->23         started        26 WerFault.exe 19 16 21->26         started        process10 signatures11 62 Maps a DLL or memory area into another process 23->62 28 hpzVNAYQ.exe 23->28 injected process12 signatures13 76 Maps a DLL or memory area into another process 28->76 31 runonce.exe 28->31         started        process14 signatures15 78 Maps a DLL or memory area into another process 31->78 80 Queues an APC in another process (thread injection) 31->80 34 5szI3JgZIVA94n.exe 31->34 injected process16
Score:
81%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c/
Threat name:
Win32.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-05-20 08:40:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2sskz6opfsrlyogdtebvdmmgoauqqxyoyl6lyaxviax2f7f6cawa._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/250520-lg7pxafk8y/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Unpacked files
SH256 hash:
d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c
MD5 hash:
81bfe3b3204ede1fca418e44aa19b310
SHA1 hash:
f5d944f771b890e7c0f88f743eb79654fe402228
Link:
https://www.unpac.me/results/65bd2f6a-5a2a-4e6c-98ce-01418b3c9e47/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d4a4acf9cf2c/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/d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c

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:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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:win32_dotnet_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET obfuscated malware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe d4a4acf9cf2ca2bc38c3990351b1867029085f0ec2fcbc02f5402fa2fcbe102c

(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 (GUARD_CF)high

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