MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4fb8b2fa2c8f4c234c2c82997a37bc48b65ba346efbbdb3f48c9d8e0f846ae07. 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
RemcosRAT
Vendor detections: 15
| SHA256 hash: | 4fb8b2fa2c8f4c234c2c82997a37bc48b65ba346efbbdb3f48c9d8e0f846ae07 |
|---|---|
| SHA3-384 hash: | 04efdcdc2348c3e494bab9cff5fc152dc00234f0693afb3f5f13037675944b7b82ca687a7a01b98f3c4ca6fff47165ca |
| SHA1 hash: | 4f42d37072667e44205da86911172a0b77387548 |
| MD5 hash: | 240d00488cfad7811a412aee7d2d2b8d |
| humanhash: | kitten-seven-red-pennsylvania |
| File name: | COTIZACI�N DE LA M�QUINA.xls |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'272'832 bytes |
| First seen: | 2026-03-12 10:41:17 UTC |
| Last seen: | 2026-03-12 11:24:06 UTC |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 24576:Er83M2liuVZw6oyw2mQr83M2liuVZw6oyw2mwk1t7+w40lAy8cFlb0:g8coPwDyx8coPwDys15+wDymlY |
| TLSH | T15D451229D851FAAECE2524388366D0C98230BC07E799D3475FED3B4C6476AF8638953D |
| TrID | 34.9% (.XLS) Microsoft Excel sheet (32500/1/3) 30.1% (.XLS) Microsoft Excel sheet (alternate) (28000/1/3) 26.3% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2) 8.6% (.) Generic OLE2 / Multistream Compound (8000/1) |
| Magika | xls |
| Reporter |  lowmal3 |
| Tags: | CVE-2017-11882 RemcosRAT 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 ID | Section size | Section name |
|---|---|---|
| 1 | 114 bytes | CompObj |
| 2 | 244 bytes | DocumentSummaryInformation |
| 3 | 200 bytes | SummaryInformation |
| 4 | 99 bytes | MBD0016BA67/CompObj |
| 5 | 481644 bytes | MBD0016BA67/Package |
| 6 | 99 bytes | MBD0016BA68/CompObj |
| 7 | 481644 bytes | MBD0016BA68/Package |
| 8 | 20 bytes | MBD0016BA69/Ole |
| 9 | 1919 bytes | MBD0016BA69/oLE10nATiVe |
| 10 | 283051 bytes | Workbook |
| 11 | 527 bytes | _VBA_PROJECT_CUR/PROJECT |
| 12 | 104 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 13 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 14 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 15 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet3 |
| 16 | 985 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 17 | 2644 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 18 | 553 bytes | _VBA_PROJECT_CUR/VBA/dir |
Intelligence
File Origin
# of uploads :
2
# of downloads :
201
Origin country :
DEVendor 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:
COTIZACI�N DE LA M�QUINA.xls
Verdict:
No threats detected
Analysis date:
2026-03-12 10:43:45 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
96.5%
Tags:
office micro virus
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
CVE-2017-11882 embedequation exploit macros shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Verdict:
Malicious
File Type:
xls
Detections:
Trojan-Downloader.MSOffice.SLoad.sb Trojan.Win32.Shelma.sb HEUR:Exploit.MSOffice.Generic Exploit.MSOffice.CVE-2017-11882.sb
Result
Threat name:
n/a
Detection:
malicious
Classification:
phis.expl
Score:
72 / 100
Signature
AI detected malicious page (phishing or scam)
Antivirus / Scanner detection for submitted sample
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Gathering data
Detection:
remcos
Verdict:
Malicious
Threat:
Trojan.MSOffice.CVE-2017-11882
Threat name:
Win32.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2026-03-12 10:42:24 UTC
File Type:
Document
Extracted files:
176
AV detection:
18 of 38 (47.37%)
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 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.
Threat name:
Malicious File
Score:
0.76
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: | 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
Delivery method
Distributed via e-mail attachment
Comments
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