MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 55178b4c5caa2903c7f09382479660dc7fcc77ff918b8ffb42a3048d322e1bcd. 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: 12
Maldoc score: 4
| SHA256 hash: | 55178b4c5caa2903c7f09382479660dc7fcc77ff918b8ffb42a3048d322e1bcd |
|---|---|
| SHA3-384 hash: | 18712f0abeda0ae4b66788bbeb873fa29685da9e99023d33ea9747429ff0e34b92ee41589bee18d7f2e7ed1bc0b67cba |
| SHA1 hash: | af0470db50269f1e28da4b5a43f75bb9e0c2304f |
| MD5 hash: | cb3192ed7cce14bbaf38106e473524e5 |
| humanhash: | happy-football-golf-ohio |
| File name: | untitled 03-02-2025.xls |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 1'207'296 bytes |
| First seen: | 2025-02-05 07:09:18 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 24576:VUqXFcjyuQtuHDZUhjyOzm6vadxCsjqxLbh:FXFmylcH6yWaasGNF |
| TLSH | T17F45E1916B05CAC5C658C73C8CA18B612B31EE10DF32076B3374B72D6EB2E616F5758A |
| 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: 4 |
OLE dump
MalwareBazaar was able to identify 29 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 | MBD014CB68A/CompObj |
| 5 | 9557 bytes | MBD014CB68A/Package |
| 6 | 114 bytes | MBD014CB68B/CompObj |
| 7 | 340 bytes | MBD014CB68B/DocumentSummaryInformation |
| 8 | 200 bytes | MBD014CB68B/SummaryInformation |
| 9 | 114 bytes | MBD014CB68B/MBD003C2DC0/CompObj |
| 10 | 13157 bytes | MBD014CB68B/MBD003C2DC0/Package |
| 11 | 114 bytes | MBD014CB68B/MBD003C65A4/CompObj |
| 12 | 499004 bytes | MBD014CB68B/MBD003C65A4/Package |
| 13 | 114 bytes | MBD014CB68B/MBD003C73BA/CompObj |
| 14 | 80003 bytes | MBD014CB68B/MBD003C73BA/Package |
| 15 | 114 bytes | MBD014CB68B/MBD003C7F3A/CompObj |
| 16 | 268 bytes | MBD014CB68B/MBD003C7F3A/DocumentSummaryInformation |
| 17 | 236 bytes | MBD014CB68B/MBD003C7F3A/SummaryInformation |
| 18 | 22655 bytes | MBD014CB68B/MBD003C7F3A/Workbook |
| 19 | 282791 bytes | MBD014CB68B/Workbook |
| 20 | 536 bytes | MBD014CB68C/Ole |
| 21 | 270478 bytes | Workbook |
| 22 | 535 bytes | _VBA_PROJECT_CUR/PROJECT |
| 23 | 104 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 24 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet1 |
| 25 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet2 |
| 26 | 977 bytes | _VBA_PROJECT_CUR/VBA/Sheet3 |
| 27 | 985 bytes | _VBA_PROJECT_CUR/VBA/ThisWorkbook |
| 28 | 2644 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 29 | 553 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:
| Type | Keyword | Description |
|---|---|---|
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
485
Origin country :
NLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Email information (16).txt
Verdict:
No threats detected
Analysis date:
2025-02-04 11:44:55 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Tags:
macro micro w97m
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
DNS request
Sending an HTTP GET request
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Connection attempt by exploiting the app vulnerability
Sending a custom TCP request by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
https://loooooooooooooooooooog.com/G94vm
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Image:
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
macros
Verdict:
Malicious
Labled as:
CVE-2017-0199
Label:
Benign
Suspicious Score:
3.7/10
Score Malicious:
37%
Score Benign:
63%
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
68 / 100
Signature
Antivirus detection for URL or domain
Excel sheet contains many unusual embedded objects
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Threat name:
Document-Excel.Trojan.Remcos
Status:
Malicious
First seen:
2025-02-05 02:41:11 UTC
File Type:
Document
Extracted files:
166
AV detection:
15 of 38 (39.47%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
3/10
Tags:
discovery
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
System Location Discovery: System Language Discovery
Malware Family:
n/a
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
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: | Excel_Hidden_Macro_Sheet |
|---|
| Rule name: | informational_win_ole_protected |
|---|---|
| Author: | Jeff White (karttoon@gmail.com) @noottrak |
| Description: | Identify OLE Project protection within documents. |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
| 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.
No further information available
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