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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2. 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: 16


Intelligence 16 IOCs YARA 35 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2
SHA3-384 hash: 8bf14085a13b602f02b95363d79b6db8755fbbbe69dea6901eb5636f890b85ce8fab9cce2ae925450ff692b8bb4c25e7
SHA1 hash: 44e68c470a32ae1f8b33d4e0e019eb536115e79c
MD5 hash: 9a1f9587cae99dc65d6a712c9de24b79
humanhash: purple-fix-violet-gee
File name:caixa-justi_pago1321098876123564-pdf__seEC2Nc9h74iejI.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:756'736 bytes
First seen:2026-10-28 10:49:52 UTC
Last seen:2026-10-28 11:36:46 UTC
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'297 x AgentTesla, 20'716 x Formbook, 12'402 x SnakeKeylogger)
ssdeep 12288:KLEgicUtMdqPCHe+n7OudgsXANBeVg0qv3zDm3XJPI/7qumsueCSATM:iEgicUhPL+qFAANBiZqvfmnJI7qjeCSV
TLSH T160F4F02815378A02E4B16FF05EB0E5B45BB96CA96230E0185FD25CEBF977B007D4276B
TrID 72.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.4% (.EXE) Win64 Executable (generic) (6522/11/2)
4.4% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter TomU
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
189
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/b400fb83-baa8-4215-a8dc-e828cd69074f/
Malware family:
formbook
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ID:
1
File name:
QuarantineMessage (9).zip
Verdict:
Malicious activity
Analysis date:
2026-10-26 13:37:22 UTC
Tags:
attachments attc-arch arch-exec formbook xloader stealer
Link:
https://app.any.run/tasks/f852b75e-05d3-4ee3-9004-132cb10becd7

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/95731/
Detection(s):
SecuriteInfo.com.Trojan.Siggen29.30022.15460.25917.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae1d3813a56bbccb37c0cd9
Tags:
virus shell micro
Gathering data
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-10-26T03:37:00Z UTC
Last seen:
2026-10-29T07:34:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2/results?tab=lookup
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/46b32937-6669-401e-bc39-dc0243cbda6b
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1993883
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Adds a directory exclusion to Windows Defender
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1993883 Sample: caixa-justi_pago13210988761... Startdate: 28/10/2026 Architecture: WINDOWS Score: 88 23 Multi AV Scanner detection for submitted file 2->23 25 Yara detected FormBook 2->25 27 Yara detected AntiVM3 2->27 29 4 other signatures 2->29 7 caixa-justi_pago1321098876123564-pdf__seEC2Nc9h74iejI.exe 4 2->7         started        process3 file4 21 caixa-justi_pago13...2Nc9h74iejI.exe.log, ASCII 7->21 dropped 31 Adds a directory exclusion to Windows Defender 7->31 33 Injects a PE file into a foreign processes 7->33 11 powershell.exe 23 7->11         started        13 caixa-justi_pago1321098876123564-pdf__seEC2Nc9h74iejI.exe 7->13         started        signatures5 process6 process7 15 WmiPrvSE.exe 11->15         started        17 conhost.exe 11->17         started        19 WerFault.exe 22 16 13->19         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.37 Win 32 Exe x86
Link:
https://app.malva.re/file/9a1f9587cae99dc65d6a712c9de24b79
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2026-10-26 15:13:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gv7slgny23ppec7cx2lleiq3alyjn2h3fx5sc3l3dbdfdltzioza._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/261028-mxl9ksbx3v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2
MD5 hash:
9a1f9587cae99dc65d6a712c9de24b79
SHA1 hash:
44e68c470a32ae1f8b33d4e0e019eb536115e79c
Link:
https://www.unpac.me/results/0e03325d-7d95-4fda-ad20-1e11d7b3bd7c/
SH256 hash:
ef6c11d9892a8ed46ec92ac3c4e94d3af87122a7d5895ea8f03c70732dd8b971
MD5 hash:
6e2b8c57e6daa1a9ae9952e2c971a8cb
SHA1 hash:
38efa982d596fe424eb1e9a57a1cbe33eabfdd3c
Link:
https://www.unpac.me/results/0e03325d-7d95-4fda-ad20-1e11d7b3bd7c/
SH256 hash:
9537ca750d2e1b7eed4c0e6b5046cc393c41d46831351dc5bd5593c07d7ba1c7
MD5 hash:
272d57167059659c0c1ee508857e86ed
SHA1 hash:
9573a04368bd4179d4fb3b45b7f8ea1e91bb36cb
Link:
https://www.unpac.me/results/0e03325d-7d95-4fda-ad20-1e11d7b3bd7c/
SH256 hash:
243a98ec43b8590f9592b8893c28351afad488a532a16464ceb055a9c5b95410
MD5 hash:
e162ecd0f7abf3aa0cbd175ca5860458
SHA1 hash:
92755f2818c9e15a0efa09ab3480929b9c385cf1
Link:
https://www.unpac.me/results/0e03325d-7d95-4fda-ad20-1e11d7b3bd7c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/357f2599b8d6/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/357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2

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:CP_Script_Inject_Detector
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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
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Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
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Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:golang_bin_JCorn_CSC846
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Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
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Rule name:pe_no_import_table
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Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
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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
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
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Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:WIN_Malware_Derialock_ForgeAuto_3127f957_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects Derialock (pe, etat extrait)
Rule name:WIN_Malware_SalatStealer_ForgeAuto_542e717b
Create hunting rule
Author:Marjoriefort
Description:Detects SalatStealer (pe, etat binaire)
Rule name:WIN_Malware_Sliver_ForgeAuto_2ddb463c
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Author:Marjoriefort
Description:Detects Sliver (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_2ffc3572
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_5001c94c
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_Unknown_ForgeAuto_ce8c5b46
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Author:Marjoriefort
Description:Detects Unknown (pe, etat binaire)
Rule name:WIN_Malware_ValleyRAT_ForgeAuto_401c5e16
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Author:Marjoriefort
Description:Detects ValleyRAT (pe, etat binaire)
Rule name:WIN_Malware_XWorm_ForgeAuto_6b06c990_Extrait
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Author:Marjoriefort
Description:Detects XWorm (pe, etat extrait)
Rule name:WIN_Sample_Unique_69354b41
Create hunting rule
Author:Marjoriefort
Description:Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

File information

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

Malspam

Formbook

Executable exe 357f2599b8d6def20be2be96b2221b02f096e8fb2dfb216d7b184651ae7943b2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/95731/

Comments