MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 1f18886a057b457b5d55e9366dfa1e2cf7de3ae8462811de052ca236b083bcf4. 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: 16
| SHA256 hash: | 1f18886a057b457b5d55e9366dfa1e2cf7de3ae8462811de052ca236b083bcf4 |
|---|---|
| SHA3-384 hash: | 6349571e56adfb8888ad1a748d86ca378629baa833f4fb013e2bdaf677d035c192df29967a45f7365a698416c2c0585c |
| SHA1 hash: | 90ac2d234977a072b220d373cdf62798a851af0d |
| MD5 hash: | 7a245ef2033fcf4049c7c6bcbdf0d4b4 |
| humanhash: | orange-king-harry-single |
| File name: | Zamwienie_na_przetwarzanie.xls |
| Download: | download sample |
| Signature | RemcosRAT |
| File size: | 406'016 bytes |
| First seen: | 2026-06-05 08:33:33 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 6144:Wp957EYf6+yUHdyyM1DhdDU3Ckp957EYf6+yUHdyyM1DhdDU3Ij:qtpkUcyM1DvKtpkUcyM1DvT |
| TLSH | T1478412267A12738BCDAF53F604D9D6DB6318BE47BF69936710403B8D0E327C2509A43A |
| 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 |  abuse_ch |
| 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 id
| Maldoc score: 16 |
| 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 |
Embedded Images
MalwareBazaar found the following images embedded in this file:
| MD5 hash | dc.creator | # of relations |
|---|---|---|
| e13904f4421e094887e18ad21589973d | Redmi 4A | 9 |
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 | MBD0038C4E8/CompObj |
| 5 | 177993 bytes | MBD0038C4E8/Package |
| 6 | 99 bytes | MBD0038C4E9/CompObj |
| 7 | 177993 bytes | MBD0038C4E9/Package |
| 8 | 20 bytes | MBD0038C4EA/Ole |
| 9 | 1860 bytes | MBD0038C4EA/oLE10Native |
| 10 | 29729 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 |
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 beused to obfuscate strings (option --decode tosee all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
136
Origin country :
SEVendor Threat Intelligence
Malware configuration found for:
MSO
Details
Malware family:
n/a
ID:
1
File name:
_1f18886a057b457b5d55e9366dfa1e2cf7de3ae8462811de052ca236b083bcf4.xls
Verdict:
No threats detected
Analysis date:
2026-06-05 08:34:38 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:
text/xml
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Verdict:
Malicious
Score:
92.5%
Tags:
office micro macro
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for synchronization primitives
Launching a process
Creating a file in the %AppData% directory
Сreating synchronization primitives
Searching for the window
Using the Windows Management Instrumentation requests
Creating a process with a hidden window
DNS request
Connection attempt
Sending a custom TCP request
Possible injection to a system process
Query of malicious DNS domain
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Connection attempt to an infection source by exploiting the app vulnerability
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Sending a TCP request to an infection source by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Clean
File Type:
Legacy Excel File with Macro
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
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
First seen:
2026-06-05T05:39:00Z UTC
Last seen:
2026-06-06T16:20:00Z UTC
Hits:
~100
Detections:
Trojan.Win32.Shelma.sb Trojan-Downloader.MSOffice.SLoad.sb HEUR:Exploit.MSOffice.Generic Exploit.MSOffice.CVE-2017-11882.sb Trojan-Downloader.Agent.HTTP.C&C
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl
Score:
64 / 100
Signature
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:
2026-06-05 08:34:20 UTC
File Type:
Document
Extracted files:
96
AV detection:
16 of 37 (43.24%)
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
Malware family:
Remcos
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: | 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
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