MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494. 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 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494
SHA3-384 hash: 1578d4a612839e0cfd1c40c047ed54247b38542b59ea6f81b26b9113693388a29d95ad219c35ee7211f0183ff96f74b8
SHA1 hash: 6c4c3b7614ee3b5a5abc619af764105ec1106c8b
MD5 hash: d72444d43128781aca00861cbff9bcb1
humanhash: early-ceiling-romeo-speaker
File name:SecuriteInfo.com.Trojan.PackedNET.3184.12004.27998
Download: download sample
Signature Formbook
Create hunting rule
File size:864'776 bytes
First seen:2026-04-15 09:35:16 UTC
Last seen:2026-04-15 10:29:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'909 x AgentTesla, 19'818 x Formbook, 12'309 x SnakeKeylogger)
ssdeep 24576:/dzrlPwCeMNtmOjksTlYMMtwkE7HMnnEVwQs:5lPkMdYMMtwxz9js
Threatray 389 similar samples on MalwareBazaar
TLSH T1D305F1E03E36B31ADE610A31E569EDB582F92EA8704179F759EC3B4774AD2109D0CF06
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
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
125
Origin country :
FR FR
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
RoboSki
a decrypted ReZer0 component and possibly a decryption component
RoboSki
a Base64 + XOR/Sub-decrypted component, its associated key, a mutex, a filename, and ReZer0 configuration parameters including: a load type, a download URL and filename (if configured), an interval (if configured), and varying flags
Link:
https://research.acce.ciphertechsolutions.com/results/a7c9bcc3-557e-44f8-977d-4eb4056ff7cc/
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.PackedNET.3184.12004.27998.exe
Verdict:
Malicious activity
Analysis date:
2026-04-15 09:38:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/24fbf63e-f051-43f1-9281-c654966c6461

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/61700/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3184.12004.27998.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69df5c0e45787c53e539e56f
Tags:
injection obfusc crypt
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
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)
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-15T06:29:00Z UTC
Last seen:
2026-04-15T12:45:00Z UTC
Hits:
~100
Detections:
Trojan-Spy.Noon.HTTP.ServerRequest Trojan.MSIL.Taskun.sb HEUR:Trojan.MSIL.Taskun.gen Trojan-PSW.Win32.Stealer.sb PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Agent.gen Backdoor.Agent.HTTP.C&C Trojan.MSIL.Inject.sb Trojan.MSIL.Crypt.sb Trojan-Spy.Win32.Noon.sb HEUR:Trojan-PSW.MSIL.Agensla.gen
Link:
https://opentip.kaspersky.com/20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494/results?tab=lookup
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cf728997-9afe-479d-9cf8-5dab33186e8e
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494
Threat name:
Win32.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2026-04-15 09:36:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eczewq7w75qmlqn3ehby3pauthkqw7hyovljev62tenlo3lcuska._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
36a3c500ed0500d0d2c222504cdd3023a4f3b8dabe2a50f45f31908b3a4ddd74
Formbook
4f7eb929f88b07150a41fc45e4e4924448570d6fc84d6e10ef2119a4c7c3e2b3
Formbook
6712822d0051f3cf96949990caaf64dc9f9b0ed059d80fdfa040170dc2199cd5
Formbook
6f16060b9b2ed31c7f92adc048988ab883e39654643cde96ef767fddd2475915
Formbook
error
Formbook
f73d18e26ab65daf7d47eb8418fc31cf3251de98026fc8bab89fdfe162039412
Formbook
+ 379 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260415-lkrsvsaz3j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Unpacked files
SH256 hash:
20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494
MD5 hash:
d72444d43128781aca00861cbff9bcb1
SHA1 hash:
6c4c3b7614ee3b5a5abc619af764105ec1106c8b
Link:
https://www.unpac.me/results/4212bd54-4670-45db-a747-6551b7dfb6b5/
SH256 hash:
18d3dacdac657b2680623f1a581e9dd0ecbad2cab1861995eb4df748a45583f6
MD5 hash:
dccde3e19a30c5f4fdb913f8bad4d40f
SHA1 hash:
5d201c0d442cc2df7d40b24f99b9e5dd4010cbb4
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/4212bd54-4670-45db-a747-6551b7dfb6b5/
SH256 hash:
efb6a13171efda5436a296f735066a438a281d0c38a63831d59c9bb86ed4e1cb
MD5 hash:
03be1634a292fb3b9dd147fc52404a43
SHA1 hash:
9b814356f9cf32900e28e1a3ba69018b7b31c471
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/4212bd54-4670-45db-a747-6551b7dfb6b5/
Parent samples :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 hash:
8600eeddd9eb48ae82277be65082adf5e176b3773f119a9b9f3aaccf069db840
MD5 hash:
8bf32f0e6e3b6027931026b275505056
SHA1 hash:
e26c5eb862d6a8331b6c058a9adf4ac1b1bb3760
Link:
https://www.unpac.me/results/4212bd54-4670-45db-a747-6551b7dfb6b5/
SH256 hash:
b7547e99dfe83ce1416459ce9c1df881fddb46f28b9b0a81a63a34fd4543286e
MD5 hash:
4fc74ebc6c32643f31f1403da1434bb6
SHA1 hash:
73b467b543a5088c4e43fc9016cc9e18282c68e5
Link:
https://www.unpac.me/results/4212bd54-4670-45db-a747-6551b7dfb6b5/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/20b24b43f6ff/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494

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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Web download

Formbook

Executable exe 20b24b43f6ff60c5c1bb21c38dbc1499d50b7cf875569257da991ab76d62a494

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/61700/
  
URLhaus
https://urlhaus.abuse.ch/url/3822214/
  
Delivery method
Distributed via web download

Comments