MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58
SHA3-384 hash: cae87468a2139ab25d9f8573f4d4551f674c9a446a26ad1e50e00af193c38608832e2f58b9e16b3bd8ca91450881eb57
SHA1 hash: 45687a3fdc8c0f6e8996c42fb16cd433e2b14809
MD5 hash: f5172fa23d5a5a953c2b0fc72515725d
humanhash: september-mike-mango-leopard
File name:invoice.xlsx
Download: download sample
Signature Formbook
Create hunting rule
File size:1'494'007 bytes
First seen:2025-08-27 10:29:59 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 24576:dOBGHHGiZuCukVz1ao3XyJMJj1eDH+bmWWX/rLxiXdOmsE02Oz28etfYTg9yQf4l:dO8HGiHukvL1e+mWWX/rQxS28etIN
TLSH T1DE65333E4B31865AFBC4DB7C6B045F65223F22D8E0637D51FA46503B5DB80A2CFA9099
TrID 61.2% (.XLSX) Excel Microsoft Office Open XML Format document (34000/1/7)
31.5% (.ZIP) Open Packaging Conventions container (17500/1/4)
7.2% (.ZIP) ZIP compressed archive (4000/1)
Magika xlsx
Reporter lowmal3
Tags:CVE-2017-11882 FormBook xlsx

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
A11748945 bytesoLE10NatiVe
A20 byteslGIZmV1Og3sXIFQhggSkHxlg7h1

Intelligence

File Origin
# of uploads :
1
# of downloads :
93
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoice.xlsx
Verdict:
No threats detected
Analysis date:
2025-08-27 10:30:52 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7134a545-1786-4ff2-985a-2c0b1aad081f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
text/xml
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/23836/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68aede72eb163e0ec182d878
Tags:
phishing autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for synchronization primitives
Launching a process
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Connection attempt by exploiting the app vulnerability
Launching a file downloaded from the Internet
Creating a process from a recently created file
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Link:
https://app.docguard.net/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug autoit embedequation exploit fingerprint keylogger packed shellcode
Link:
https://www.filescan.io/uploads/68aede6d39a6221faa70b813/reports/f8d360bc-8c68-4f27-af2e-3d5e4b0d24ca/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58
Label:
Malicious
Suspicious Score:
9.8/10
Score Malicious:
99%
Score Benign:
1%
Link:
https://www.malware.ai/gui/files/?id=6e54d61a-51d3-49a6-a7a7-2d4078bf1b2e
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58
Details
Document With No Content
Document contains little or no semantic information.
Verdict:
Malicious
File Type:
xlsx
First seen:
2025-08-27T05:27:00Z UTC
Last seen:
2025-08-27T05:27:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1766125
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Link:
https://malprob.io/report/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58/
Threat name:
Document-OLE.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2025-08-27 07:39:12 UTC
File Type:
Document
Extracted files:
16
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dnzhcnqrkhkxu62w6synyqna337dytctf47bgxjwsr4vgx3mtnma._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  1/10
Tags:
persistence ransomware
Link:
https://tria.ge/reports/250827-mkbmbabn8z/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Verdict:
Suspicious
Tags:
exploit
YARA:
INDICATOR_OLE_EXPLOIT_CVE_2017_11882_1
Link:
https://app.threat.zone/submission/bce77970-b2ce-4cd6-a00c-2473fe246a06
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1b7271361151/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/1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings

File information

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

Malspam

Formbook

Excel file xlsx 1b7271361151d57a7b56f4b0dc41a0defe3c4c532f3e135d369479535f6c9b58

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/23836/

Comments