MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f1b439e23f0bd7ab251987a7e48b93c54fc71b69ba7cd744c51682daaddf29da. 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: 17
| SHA256 hash: | f1b439e23f0bd7ab251987a7e48b93c54fc71b69ba7cd744c51682daaddf29da |
|---|---|
| SHA3-384 hash: | f0a14f13b4c70a2b1d29a32dc8b4e716469805a3ec9f9d2557826761da023839fac788143ab578ac4aeb99296f14f51d |
| SHA1 hash: | 8c3b9deb3c368d550cfab46776809180b0d4e373 |
| MD5 hash: | 5d2bb3cd60e97577806fa96fa34fb4ce |
| humanhash: | summer-charlie-pip-artist |
| File name: | REM 2526 B101.xlam |
| Download: | download sample |
| File size: | 3'059'016 bytes |
| First seen: | 2025-12-09 13:00:43 UTC |
| Last seen: | Never |
| File type: |  xlsx |
| MIME type: | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| ssdeep | 49152:qOc2yD4lTPRU63uakjq4cPfVs+xIRt7LKPsNdQzIsGWokM5C7EpZ+jd:qoyEFP2Ljp4fVn+dLKsNuksGhkM5CMZG |
| TLSH | T163E512BB94B2A9536A904563FA0F2C1A335B19E53B64E341E94150AC7F770D38F92B33 |
| 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 |  abuse_ch |
| Tags: | CVE-2017-11882 xlam 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 ID | Section size | Section name |
|---|---|---|
| A1 | 2970627 bytes | OlE10natIve |
| A2 | 0 bytes | JylYMIZw1Bc0MheO7zMjtYIFawt |
Intelligence
File Origin
# of uploads :
1
# of downloads :
107
Origin country :
SEVendor Threat Intelligence
Malware configuration found for:
MSO
Details
MSO
extracted OLE packages, if they are present within the input OOXML document
Malware family:
n/a
ID:
1
File name:
Fwd_ REM # B101 - 1x40'HC - SCANNED DOCUMENTS __ REMMY.eml
Verdict:
No threats detected
Analysis date:
2025-12-09 06:26:54 UTC
Tags:
susp-attachments attachments attc-unc
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
Verdict:
Malicious
Score:
99.9%
Tags:
vmdetect 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
Sending a custom TCP request
Сreating synchronization primitives
Connection attempt by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
embedequation exploit masquerade
Verdict:
Malicious
Labled as:
Msoffice/malicious_confidence_70%
Label:
Benign
Suspicious Score:
4.3/10
Score Malicious:
44%
Score Benign:
56%
Result
Verdict:
MALICIOUS
Link:
Verdict:
Malicious
File Type:
xlam
First seen:
2025-12-08T21:23:00Z UTC
Last seen:
2025-12-11T07:42:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.Shelma.sb HEUR:Exploit.MSOffice.CVE-2018-0802.gen Exploit.MSOffice.CVE-2018-0802.b Exploit.MSOffice.CVE-2017-11882.sb
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
64 / 100
Signature
Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Verdict:
inconclusive
YARA:
3 match(es)
Tags:
Office Document
Verdict:
Malicious
Threat:
Exploit.MSOffice.CVE-2018-0802
Threat name:
Document-Office.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2025-12-09 01:21:34 UTC
AV detection:
15 of 24 (62.50%)
Threat level:
5/5
Detection(s):
Suspicious file
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 FindShellTrayWindow
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
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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