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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535
SHA3-384 hash: 078dbcbbfd80d7e6e22668408bc5d7f176defac8810cfbff7feae685d07035f8116f8a648c17a3c19c81be95eb6170be
SHA1 hash: 1fc53a8292f075fd0ec3bc77d21dfb216e9039cb
MD5 hash: 2c6fce9728f174f1400c460ad0bea15a
humanhash: fanta-pluto-whiskey-lima
File name:0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:876'032 bytes
First seen:2026-10-12 08:05:17 UTC
Last seen:2026-10-14 15:59:21 UTC
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'272 x AgentTesla, 20'614 x Formbook, 12'394 x SnakeKeylogger)
ssdeep 24576:sUTNW2KVOs0RkZEFZEOF9aQv6ffbziNqQxUC8:sP2KVOzRkAx9/v8ziNzxU
TLSH T150151219313DDB23C9621BF11552E13013F91CFEA471E2066FE9BDEB7962F012A12A67
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon f0e4e2d1c4b8ccf0 (7 x Formbook, 2 x DarkCloud, 1 x AgentTesla)
Reporter whack_sh
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
211
Origin country :
IT IT
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/5c8cfafe-25a8-4886-809c-d433a3a9f84b/
Malware family:
n/a
ID:
1
File name:
s2.rar
Verdict:
Malicious activity
Analysis date:
2026-10-12 08:13:23 UTC
Tags:
auto metasploit framework arch-exec arch-scr stealer stealc github python rustystealer lumma opendir santastealer telegram cyberstrikeai backdoor pastebin loader brat pyinstaller
Link:
https://app.any.run/tasks/3d3bdf6b-168e-40c0-a4d9-26b960a956ba

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/91521/
Detection(s):
SecuriteInfo.com.Trojan.KillProc2.41447.12347.28772.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad0f4c76f551121ba161612
Tags:
stration shell cupi
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed vbnet
Link:
https://www.filescan.io/uploads/6acc94c05e8652f865e0d330/reports/0d93ce0a-23c8-4ce4-bd17-794bbeb3fb1f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-10-12T02:43:00Z UTC
Last seen:
2026-10-13T18:29:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/ee60ed47-282d-440a-aae0-468a1003b047
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1985792
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Joe Sandbox ML detected suspicious sample
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
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Suricata IDS alerts for network traffic
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)
Unusual module load detection (module proxying)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1985792 Sample: AZIz72XopD.exe Startdate: 12/10/2026 Architecture: WINDOWS Score: 100 32 xearazin.shop 2->32 34 www.syntroxer.com 2->34 36 17 other IPs or domains 2->36 58 Suricata IDS alerts for network traffic 2->58 60 Antivirus detection for URL or domain 2->60 62 Multi AV Scanner detection for submitted file 2->62 64 6 other signatures 2->64 8 AZIz72XopD.exe 4 2->8         started        12 YNzHh45vx.exe 2->12 injected 14 EoHpZthKQsX.exe 2->14 injected signatures3 process4 dnsIp5 30 C:\Users\user\AppData\...\AZIz72XopD.exe.log, ASCII 8->30 dropped 66 Adds a directory exclusion to Windows Defender 8->66 68 Unusual module load detection (module proxying) 8->68 70 Switches to a custom stack to bypass stack traces 8->70 17 AZIz72XopD.exe 8->17         started        20 powershell.exe 23 8->20         started        22 SndVol.exe 13 12->22         started        38 www.shodaisupport.com 162.43.121.199, 49761, 49762, 49763 XSERVERXserverIncJP Japan 14->38 40 www.jf-bitpie.cn 154.206.139.66, 49712, 80 OWGELS-AS-APOWGELSINTERNATIONALCOLIMITEDHK Hong Kong SAR China 14->40 42 13 other IPs or domains 14->42 file6 signatures7 process8 signatures9 44 Maps a DLL or memory area into another process 17->44 46 Queues an APC in another process (thread injection) 17->46 48 Found direct / indirect Syscall (likely to bypass EDR) 17->48 24 WmiPrvSE.exe 20->24         started        26 conhost.exe 20->26         started        50 Tries to steal Mail credentials (via file / registry access) 22->50 52 Tries to harvest and steal browser information (history, passwords, etc) 22->52 54 Modifies the context of a thread in another process (thread injection) 22->54 56 2 other signatures 22->56 28 firefox.exe 22->28         started        process10
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.33 Win 32 Exe x86
Link:
https://app.malva.re/file/2c6fce9728f174f1400c460ad0bea15a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2026-10-12 05:36:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
27 of 38 (71.05%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=b5mr5iy4lmvmjr2aaxmzyo2rds73ghfhsnbloiqexbffwthiiu2q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/261012-jyz1aax19n/
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:
0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535
MD5 hash:
2c6fce9728f174f1400c460ad0bea15a
SHA1 hash:
1fc53a8292f075fd0ec3bc77d21dfb216e9039cb
Link:
https://www.unpac.me/results/8aae735a-b68f-4e6f-af22-e2ef79ba37d7/
SH256 hash:
4ba87ce04fd36151d7ecab5253302a4122e8b68efb566d7fda0b8a87d19afac1
MD5 hash:
8afb24fd3849d7c4a693cf10141a2642
SHA1 hash:
882586ff99dae975e6aeb50a2f84c3310f31c17e
Link:
https://www.unpac.me/results/8aae735a-b68f-4e6f-af22-e2ef79ba37d7/
SH256 hash:
031f5387e15cb20e2b022482531e9b863da1c0825c3e057a5197cf1fc75ff5c3
MD5 hash:
e962af4749fabdcda10df6da328f28ad
SHA1 hash:
f335dbd80b7dd1798cde7b4a433167c454d4c7dc
Link:
https://www.unpac.me/results/8aae735a-b68f-4e6f-af22-e2ef79ba37d7/
SH256 hash:
11c04cecd4a052cdd3d6e513bdef624368ca8958f23f2af9d4b735c3329221e3
MD5 hash:
89d913c3396d52642c863bd9ac1702ed
SHA1 hash:
7bf87725c554009200473e770d3ca3d007fdaea9
Link:
https://www.unpac.me/results/8aae735a-b68f-4e6f-af22-e2ef79ba37d7/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/0f591ea31c5b/report/overview.html
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:DotNet_RGB_Embedded_AssemblyLoader_Hunt
Create hunting rule
Author:ShadowOpCode
Description:Hunt .NET bitmap RGB extraction combined with embedded resources and assembly loading
Rule name:HUNT_NET_Loader_ImagePixel_To_AssemblyLoad
Create hunting rule
Author:Anish Bogati
Description:Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders.
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Runtime_Broker_Variant_1
Create hunting rule
Author:Sn0wFr0$t
Description:Detecting malicious Runtime Broker
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:WIN_Malware_Derialock_ForgeAuto_3127f957_Extrait
Create hunting rule
Author:Marjoriefort
Description:Detects Derialock (pe, etat extrait)

File information

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

Web download

Formbook

Executable exe 0f591ea31c5b2ac4c74005d99c3b511cbfb31ca79342b72204b84a5b4ce84535

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/91521/
  
URLhaus
https://urlhaus.abuse.ch/url/3948950/

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