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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca91ab260a249b07684bc59c8ad1c189b436da3e3901ac952cbb2a20d0ed4942. 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



Threat unknown


Vendor detections: 14


Intelligence 14 IOCs YARA 4 File information Comments

SHA256 hash: ca91ab260a249b07684bc59c8ad1c189b436da3e3901ac952cbb2a20d0ed4942
SHA3-384 hash: bbfe590f1243db840d5236956a97d1a060874161d9fe6c36c3ff4f46db1ff2e37f5f9a8c6f078220fbc4dd821874ee61
SHA1 hash: bb29715c48171e74f511afb16306b2e0b17a6bfa
MD5 hash: ef33da31745ec470af1d1bd9429a44d4
humanhash: indigo-jersey-island-papa
File name:5342789.xls
Download: download sample
File size:290'816 bytes
First seen:2026-05-20 16:34:45 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:YFBkSlS8E6akBw9OVbWnrNdvB5LjLdDJQhzIFNUwgBt:YkSlLXzSnrTzLHvPc
TLSH T17554BE27A55ACA07EFB342754F978559031EFE286AC1124B382E7F2E63B1D65CD8F009
TrID 34.0% (.XLS) Microsoft Excel sheet (32500/1/3)
29.3% (.XLS) Microsoft Excel sheet (alternate) (28000/1/3)
25.6% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
8.3% (.) Generic OLE2 / Multistream Compound (8000/1)
2.6% (.ASSETS) Unity binary serialized Assets (generic) (2509/3/1)
Magika xls
Reporter TomU
Tags:exe xls

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 18 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
476 bytesMBD00AFF1E0/CompObj
5109311 bytesMBD00AFF1E0/Ole10Native
694 bytesMBD00AFF1E1/CompObj
720 bytesMBD00AFF1E1/Ole
853021 bytesMBD00AFF1E1/CONTENTS
9870 bytesMBD00AFF1E2/Ole
10110218 bytesWorkbook
11527 bytes_VBA_PROJECT_CUR/PROJECT
12104 bytes_VBA_PROJECT_CUR/PROJECTwm
13977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
14977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
15977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
16985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
172644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
18553 bytes_VBA_PROJECT_CUR/VBA/dir

Intelligence


File Origin
# of uploads :
1
# of downloads :
93
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
MSO
Details
MSO
extracted VBA Macros and, if observed, MS-OFORM variables/data are added to the knowledge base for usage in later parsing of the Macros
Malware family:
n/a
ID:
1
File name:
5342789.xls
Verdict:
No threats detected
Analysis date:
2026-05-11 08:02:38 UTC
Tags:
ole-embedded phish-ml-xls

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Verdict:
Malicious
Score:
96.5%
Tags:
office virus macro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://www.iec.ch
WorkBook
Behaviour
SuspiciousRTF detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Verdict:
Malicious
File Type:
xls
First seen:
2026-05-08T03:12:00Z UTC
Last seen:
2026-05-22T14:05:00Z UTC
Hits:
~10000
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
n/a
Gathering data
Threat name:
Win32.Trojan.Ravartar
Status:
Malicious
First seen:
2026-05-08 08:46:26 UTC
File Type:
Document
Extracted files:
55
AV detection:
19 of 36 (52.78%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  1/10
Tags:
persistence ransomware
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
Please note that we are no longer able to provide a coverage score for Virus Total.

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:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:informational_win_ole_exist
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Packages embedded in Office 97-2K3 Doc Files.
Rule name:informational_win_ole_protected
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:XLS_STRINGS
Author:somedieyoungZZ
Description:Detect Strings targeting Bangladesh

File information


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

Malspam

Excel file xls ca91ab260a249b07684bc59c8ad1c189b436da3e3901ac952cbb2a20d0ed4942

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments