MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1. 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: 13

Maldoc score: 4

Intelligence 13 IOCs YARA 3 File information Comments

SHA256 hash:	f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1
SHA3-384 hash:	51441823c221fa72a2dd0c454eebc7d063c59f0454c3d7df7f955588962e84d8d8d4da9afb51cb1b5b5add3a0274c182
SHA1 hash:	794c06f69c0f4781237cf31b66f3df2046e5cebf
MD5 hash:	c56620ac05be8484c74566ce20f255cc
humanhash:	carpet-video-virginia-artist
File name:	TT COPY.xls
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	1'094'656 bytes
First seen:	2025-02-11 17:27:11 UTC
Last seen:	2025-02-11 18:44:42 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	24576:95D5iSCssEWQAeexNR/ThRc2xn6FnYFs/0XLQOnRhiRqLc:n8SCssETONRrhRvxSnes/05hiIL
TLSH	T1E1352305FAC2D703EE8202394ECBF04A2D1CAE843B49C65737947B6E2679576B5ED14C
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 RAT 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 15 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	MBD0014E9F7/CompObj
5	591760 bytes	MBD0014E9F7/Package
6	660 bytes	MBD0014E9F8/Ole
7	479787 bytes	Workbook
8	521 bytes	_VBA_PROJECT_CUR/PROJECT
9	104 bytes	_VBA_PROJECT_CUR/PROJECTwm
10	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet1
11	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet2
12	977 bytes	_VBA_PROJECT_CUR/VBA/Sheet3
13	985 bytes	_VBA_PROJECT_CUR/VBA/ThisWorkbook
14	2644 bytes	_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
15	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 :

# of downloads :

499

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

TT COPY.xls

Verdict:

No threats detected

Analysis date:

2025-02-11 17:32:28 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/3a3146b4-0059-4150-9705-fdd4bea38ada

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

Detection(s):

SecuriteInfo.com.Other.Malware-gen.32592.9733.UNOFFICIAL

TwinWave.EvilDoc.93TilInfinity.20240412.UNOFFICIAL

Verdict:

Malicious

Score:

90.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67ab88bd3f78927cc2ccdb57

Tags:

macro micro w97m

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

DNS request

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

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

Link:

https://app.docguard.net/f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1/results/dashboard

Payload URLs

URL

File name

https://linkrjb.me/YXiwF7

Embedded Ole

Behaviour

SuspiciousRTF detected

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

macros

Link:

https://www.filescan.io/uploads/67ab88b5a116e377e79bc9d1/reports/d79ac60d-f710-4dcb-a39e-2d8a9b321f81/overview

Verdict:

Malicious

Labled as:

CVE-2017-0199

Link:

https://www.hybrid-analysis.com/sample/f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1

Label:

Benign

Suspicious Score:

2.1/10

Score Malicious:

22%

Score Benign:

78%

Link:

https://www.malware.ai/gui/files/?id=b3adff70-23a3-44b4-91ea-b297468e098c

Result

Threat name:

n/a

Detection:

malicious

Classification:

n/a

Score:

56 / 100

Link:

https://www.joesandbox.com/analysis/1612343

Signature

Excel sheet contains many unusual embedded objects

Machine Learning detection for sample

Multi AV Scanner detection for submitted file

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

OFFICE

Link:

https://malprob.io/report/f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1/

Threat name:

Win32.Exploit.CVE-2017-0199

Status:

Malicious

First seen:

2025-02-11 07:53:49 UTC

File Type:

Document

Extracted files:

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=64r3ghhkpheqgb63tlgsllik44cpixiyz65wkvbesivzn2fow3yq._file

Result

Malware family:

n/a

Score:

8/10

Tags:

discovery

Link:

https://tria.ge/reports/250211-v1mnhsvjgy/

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

System Network Configuration Discovery: Internet Connection Discovery

Downloads MZ/PE file

Malware Family:

n/a

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/8b054874-75b6-4961-bb90-b3ccc7a6f8d6

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

0.76

Link:

https://yomi.yoroi.company/submissions/f723b31cea79c90307db9acd25ad0ae704f45d18cfbb655424922b96e8aeb6f1

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 Create hunting rule
Author:	Jeff White (karttoon@gmail.com) @noottrak
Description:	Identify OLE Project protection within documents.

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	XLS_STRINGS Create hunting rule
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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