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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580
SHA3-384 hash: 5d538e12d4ccccca077e5594eeaacbc39e7873659018fb9f7f7244a29ebdb56b86a28409db7b3d27b66f9a0a7559782d
SHA1 hash: 3cc3313d4abf9286c5af610bdd3271f3bb289c63
MD5 hash: 29cd91ab28550d626ab98510526bfdab
humanhash: ten-monkey-kitten-harry
File name:PurchaseXorderXPdf.rar
Download: download sample
Signature Formbook
Create hunting rule
File size:968'841 bytes
First seen:2026-10-14 15:06:38 UTC
Last seen:2026-10-14 15:06:45 UTC
File type: rar
MIME type:application/vnd.rar
ssdeep 24576:QOEVZY9y7qmnPjUJ8nnZ6qpJAImpcNIwqOlmvBBbU7f:QOEVd3nwJSnZ6qTALp+IlOEZh0
TLSH T17E252316B286C7E13A849C9C8A1D628C668F2DCD00C39DD5BEA125DFB187E0D4FD645F
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter TomU
Tags:FormBook rar

Intelligence

File Origin
# of uploads :
2
# of downloads :
44
Origin country :
CH CH
File Archive Information

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

File name:Purchase order Pdf.exe
File size:1'021'952 bytes
SHA256 hash: 51fec247480d39d3fa354fa4a4d81a08155a9de87330d01cc8299e4cbeab6ca5
MD5 hash: b865d511713d8f0bbb7cd7c209e1e660
MIME type:application/x-dosexec
Signature Formbook
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/13386372-e52a-4c86-9871-3ca1e8505872/
Detection(s):
Legacy.Trojan.Agent-1388773
Create hunting rule

Legacy.Trojan.Agent-1388784
Create hunting rule

Sanesecurity.Foxhole.Rar_badexts90.UNOFFICIAL
Create hunting rule

Sanesecurity.Foxhole.Rar_fs3515.UNOFFICIAL
Create hunting rule

Sanesecurity.Foxhole.Rar_fs963.UNOFFICIAL
Create hunting rule

Sanesecurity.Foxhole.Rar_pdf.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.BankBot.3531.49755568.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ac66594db181a66dc073743
Tags:
virus micro
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 masquerade obfuscated packed
Link:
https://www.filescan.io/uploads/6acf9ab53467caad9948abd9/reports/7ed432f0-b594-400c-a926-c322efd64419/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580
Verdict:
Malicious
File Type:
rar
First seen:
2026-08-20T03:58:00Z UTC
Last seen:
2026-09-29T06:56:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580/results?tab=lookup
Verdict:
inconclusive
YARA:
1 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout Rar Archive SOS: 0.40
Link:
https://app.malva.re/file/29cd91ab28550d626ab98510526bfdab
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580/
Threat name:
Win32.Trojan.XWorm
Create hunting rule
Status:
Malicious
First seen:
2026-08-20 07:17:09 UTC
File Type:
Binary (Archive)
Extracted files:
9
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zazttdqfak6sztdo7tpixe3vpq2mrk43qv6qcrq7yrvl4huoiwaa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/261014-s3xkdse141/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Family: Formbook
Formbook payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580

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: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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

rar c833398e0502bd2ccc6efcde8b93757c34c8ab9b857d01461fc46abe1e8e4580

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments