MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b. 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: 12


Intelligence 12 IOCs YARA 20 File information Comments
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SHA256 hash: 8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b
SHA3-384 hash: 2b93b5f047e573b812e68cfb2f0a3305fdaa1e4f9e4b2afb53f80319dac3b5ca3a7fb56367776697e33a2ac7bde0999c
SHA1 hash: aa693b4279f3f7937d7cef02ee69e6edffbbe3d1
MD5 hash: 2ca8e5c25d45a71c31c64d49e8971a5c
humanhash: six-bulldog-cardinal-orange
File name:request and questionier with collaboration.zip
Download: download sample
Signature Formbook
Create hunting rule
File size:972'820 bytes
First seen:2026-04-15 00:52:22 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 24576:D339kDHq5pEIyj6qcyJ/Q4hOkBv24zcLP9:b6TypEI26ryB1OkV24zcV
TLSH T15F25334488BD239FB62C7C9542E8002F5129FB4F8F66FD34355AAA465A37094EC6C33B
Magika zip
Reporter Anonymous
Tags:FormBook zip

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
DK DK
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:request and questionier with collaboration.exe
File size:1'026'560 bytes
SHA256 hash: 06319316c7d3da0881bcf83a4509a9dd15fa4765228240b0d4c7684df40aa99d
MD5 hash: 2ee789ffe61ccde0f16f018459d905f3
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/e88bb7c9-8bf4-42c8-8832-826cf8b6527f/
Detection(s):
Sanesecurity.Foxhole.Zip_Wordexe.1.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69dc9d81f68adfe100394b76
Tags:
virus
Result
Verdict:
Malicious
File Type:
PE File
Link:
https://app.docguard.net/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 crypt explorer formbook lolbin obfuscated packed tracker unsafe vbnet
Link:
https://www.filescan.io/uploads/69dee1579124ebc0875256e0/reports/cba51f83-fc31-4c39-8bc8-4b20c3dd8472/overview
Verdict:
Malicious
Labled as:
Trojan.Win64.Kryptik
Link:
https://www.hybrid-analysis.com/sample/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
File Type:
zip
First seen:
2026-04-14T22:05:00Z UTC
Last seen:
2026-04-14T22:11:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
ARCHIVE
Link:
https://malprob.io/report/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b/
Threat name:
Win32.Trojan.Ravartar
Create hunting rule
Status:
Malicious
First seen:
2026-04-13 08:54:28 UTC
File Type:
Binary (Archive)
Extracted files:
12
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rwat2xjeu5fwztnm77wjd6xc4ab6s26p72vmf6avnq52ru2pjcnq._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/260415-f9ab8aft6j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
Link:
https://yomi.yoroi.company/submissions/8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b

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: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:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:win32_dotnet_form_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET form obfuscate malware

File information

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

Malspam

Formbook

zip 8d813d5d24a74b6ccdacffec91fae2e003e96bcffeaac2f8156c3ba8d34f489b

(this sample)

anyrun
any.run
https://app.any.run/tasks/d7c80a60-0585-4a5b-891f-cd6489b42310
  
Delivery method
Distributed via e-mail attachment

Comments