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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 878cc5236185a715acf0f76fb12b5bb3a6aa60a374fd81514ca83f2fa7a30efb. 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: 16


Maldoc score: 9


Intelligence 16 IOCs YARA 2 File information Comments

SHA256 hash: 878cc5236185a715acf0f76fb12b5bb3a6aa60a374fd81514ca83f2fa7a30efb
SHA3-384 hash: 3fb07e8ecfcb4271f277a314e20f3cc1a7c9e917316d31d5f8a313ccf905cb242d45fe7d335fadcc81492a6ec8ed87c0
SHA1 hash: 0ee410c21e5646c9f7ed325225a46bc1b1efa700
MD5 hash: 6f2a878e9ae626636774a6b2287862f1
humanhash: robin-queen-music-angel
File name:ΑΙΤΗΣΗ 4379.xls
Download: download sample
Signature RemcosRAT
File size:1'235'968 bytes
First seen:2025-10-06 11:01:29 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:CQrMTrGYqsVdId52xKph4IOTW41ES2R2o+gQRRK2HGMJefRy8okYsWdszZ:F6rGYqsVdId52xK41Bi2oUVrskwYsWd
TLSH T127456B42FF90FA02C124473AD8F793716376FC815B6B4B076784B3162EA26E41E476DA
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika xls
Reporter abuse_ch
Tags:cve-2017-0199 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 id
Maldoc score: 9
Application name is Microsoft Excel
File Format is MS Excel 97-2003
Container Format is OLE
Office document is in encrypted
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 26 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
4114 bytesMBD0009D7F6/CompObj
5348 bytesMBD0009D7F6/DocumentSummaryInformation
6236 bytesMBD0009D7F6/SummaryInformation
7114 bytesMBD0009D7F6/MBD0005A4EA/CompObj
834476 bytesMBD0009D7F6/MBD0005A4EA/Package
994 bytesMBD0009D7F6/MBD0005A72C/CompObj
1020 bytesMBD0009D7F6/MBD0005A72C/Ole
1175629 bytesMBD0009D7F6/MBD0005A72C/CONTENTS
12114 bytesMBD0009D7F6/MBD00061A33/CompObj
13348 bytesMBD0009D7F6/MBD00061A33/DocumentSummaryInformation
14236 bytesMBD0009D7F6/MBD00061A33/SummaryInformation
15324513 bytesMBD0009D7F6/MBD00061A33/Workbook
16573441 bytesMBD0009D7F6/Workbook
17722 bytesMBD0009D7F7/Ole
18198898 bytesWorkbook
19525 bytes_VBA_PROJECT_CUR/PROJECT
20104 bytes_VBA_PROJECT_CUR/PROJECTwm
21977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
22977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
23977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
24985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
252644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
26553 bytes_VBA_PROJECT_CUR/VBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may beused to obfuscate strings (option --decode tosee all)

Intelligence


File Origin
# of uploads :
1
# of downloads :
157
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ΑΙΤΗΣΗ 4379.xls
Verdict:
No threats detected
Analysis date:
2025-10-06 11:14:05 UTC
Tags:
n/a

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:
92.5%
Tags:
trojan macro lien sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Creating a window
Connection attempt to an infection source by exploiting the app vulnerability
Sending a TCP request to an infection source by exploiting the app vulnerability
Sending an HTTP GET request
Сreating synchronization primitives
Query of malicious DNS domain
Connection attempt by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
https://techuntangler.tools/NtoG0a
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 evasive macros powershell
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Verdict:
Malicious
File Type:
xls
First seen:
2025-10-06T01:49:00Z UTC
Last seen:
2025-10-07T23:29:00Z UTC
Hits:
~1000
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl
Score:
60 / 100
Signature
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Microsoft Office Child Process
Behaviour
Behavior Graph:
Verdict:
Malware
YARA:
7 match(es)
Tags:
Corrupted Office Document
Threat name:
Win32.Exploit.CVE-2017-0199
Status:
Malicious
First seen:
2025-10-06 04:43:05 UTC
File Type:
Document
Extracted files:
58
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence ransomware
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Process spawned unexpected child process
Malware Family:
n/a
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
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: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.

Comments