MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9. 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: 17


Intelligence 17 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
SHA3-384 hash: 8e3708fecb43a5442438c580b56e263d3c3d592ac26b908895dd5924ba8ffd90d05d76228806848c25c10e5f7aaa848d
SHA1 hash: 22351ed0a0d96b362add906b4e12d72112d852c1
MD5 hash: 1b10d45d79d9794ba7b73d652b14b1ce
humanhash: princess-mountain-snake-aspen
File name:04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
Download: download sample
Signature Formbook
Create hunting rule
File size:1'062'912 bytes
First seen:2026-06-08 08:45:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'066 x AgentTesla, 20'011 x Formbook, 12'352 x SnakeKeylogger)
ssdeep 24576:aiiAEFT0D1lbLj4/FnfzFVHjoBK1fnUvCSkSH0c7M:g3FQ5BLj8dfXjoBK1fneCSpHT
Threatray 184 similar samples on MalwareBazaar
TLSH T1E7351258261AD817C4960FB00D70E7B965685FD8E911E603DFFBFEAFF86E6542801382
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 0000000000000000 (902 x AgentTesla, 555 x Formbook, 316 x RedLineStealer)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
84
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/59e3d3ea-33e7-4e3e-aefb-07bc7088f670/
Malware family:
n/a
ID:
1
File name:
04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9.exe
Verdict:
Malicious activity
Analysis date:
2026-06-08 08:48:29 UTC
Tags:
auto-reg netreactor
Link:
https://app.any.run/tasks/9c4a71ad-6643-47fb-ac66-e20d0f5a7c2d

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/69638/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3252.13273.8249.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a2681da3e9eff6a6b68b55d
Tags:
micro shell spawn
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
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)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed vbnet
Link:
https://www.filescan.io/uploads/6a26812dbf16337e43bb1163/reports/e4e1def8-89fe-4431-975e-2709e646ef90/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-27T00:37:00Z UTC
Last seen:
2026-06-04T06:05:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/2ec15750-0ddb-470c-b2de-9ec6b0703db0
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2026-05-27 03:43:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ath3eznn6kgx2aiuo2g4qgitxaa4ztnbhyewmo6v3ssbqj73tt4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
Formbook
4c41eeda925a9eb54ee04e92a3c2ca594c866ce2c0c12806fc87354af2177381
Formbook
5488fa3d252865cabacb9c18b16e03c5778cf351d6697540eaa482c6c00091b9
Formbook
6262f535935bbff801642c7b4a3f074c59907ec83752d41bf75d6d15f132037e
Formbook
6c6902cea5aabd389064f34d992917cc003b0cc7f77696378682a10475a469f6
Formbook
76e696ea5a80e53e3f8954256b6ba67382d0f3fe148b4b4cde96555d778f1ce8
Formbook
839827a2b7f35c91f54ada0f8cee7b68bb52fce97d3199f740ad975beb24dd21
Formbook
error
Formbook
f9503e171d157858ff90acaac49848c951c8057c71541aaea8aed648edad6856
Formbook
fc944b5465a41ab46b5ddaddd499c84170e2454ca6e5fce9987914aa8dba1cbc
Formbook
+ 174 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/260608-kn35mabs7v/
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
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9
MD5 hash:
1b10d45d79d9794ba7b73d652b14b1ce
SHA1 hash:
22351ed0a0d96b362add906b4e12d72112d852c1
Link:
https://www.unpac.me/results/fe609b6c-db11-4c2b-8d7c-97c5885f28c7/
SH256 hash:
bc182f2d934b3e8f2d8c93739d8c8383e60223af16c62359a10831f76d9d168a
MD5 hash:
e01f8eac49eefbab201ec555dc9ae891
SHA1 hash:
9539cb2e684aded0ee0d1213b1d2679220bef72d
Link:
https://www.unpac.me/results/fe609b6c-db11-4c2b-8d7c-97c5885f28c7/
SH256 hash:
664e822411403b50f1693cd9e283f028624a49726211b74606fa91e158ccb230
MD5 hash:
cc6b782c58b1c35a67b3e0ea21b45e99
SHA1 hash:
bd81125f660d4599fccecdd8c5798d29f8bd3eda
Link:
https://www.unpac.me/results/fe609b6c-db11-4c2b-8d7c-97c5885f28c7/
SH256 hash:
5aef543f2aaa09031143ed0b9734dd693fa81b56dfe75f546df36ea394210131
MD5 hash:
706cd7eac9f2ec43307b7b4538a39a95
SHA1 hash:
e31f3775922f260fc3ba943eb2f2770f7b3b1112
Link:
https://www.unpac.me/results/fe609b6c-db11-4c2b-8d7c-97c5885f28c7/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/04cfb265adf2/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/04cfb265adf28d7d0114768dc81913b801cccda13e09663bd5dca41827fb9cf9

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
Create hunting rule
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
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
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
Create hunting rule
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
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/69638/

Comments