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Windows Analysis Report
3lvdjItxde.exe

Overview

General Information

Sample name:	3lvdjItxde.exe renamed because original name is a hash value
Original sample name:	win_remcos_3ec2af4b5c9bb02513b905dfa7217efdcec08dce2c3d9621bd4792d50e548cf1.exe
Analysis ID:	1431549
MD5:	d3ccea4baebe97ae4b7adf2c95ce4e20
SHA1:	2c2436357a6d2fa47fb895a6ff0a64ed2c6a1af3
SHA256:	3ec2af4b5c9bb02513b905dfa7217efdcec08dce2c3d9621bd4792d50e548cf1
Tags:	exeremcos
Infos:

Errors No process behavior to analyse as no analysis process or sample was found Corrupt sample or wrongly selected analyzer. Details: %1 is not a valid Win32 application.

Detection

Remcos

Score:	84
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Antivirus detection for URL or domain

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Machine Learning detection for sample

Yara signature match

Classification

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Remcos, RemcosRAT	Remcos (acronym of Remote Control & Surveillance Software) is a commercial Remote Access Tool to remotely control computers.Remcos is advertised as legitimate software which can be used for surveillance and penetration testing purposes, but has been used in numerous hacking campaigns.Remcos, once installed, opens a backdoor on the computer, granting full access to the remote user.Remcos is developed by the cybersecurity company BreakingSecurity.	APT33 The Gorgon Group UAC-0050	http://malware-traffic-analysis.net/2017/12/22/index.html https://asec.ahnlab.com/en/32376/ https://asec.ahnlab.com/ko/25837/ https://asec.ahnlab.com/ko/32101/ https://blog.360totalsecurity.com/en/vendetta-new-threat-actor-from-europe/	https://malpedia.caad.fkie.fraunhofer.de/details/win.remcos

Malware Configuration

⊘No configs have been found

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
3lvdjItxde.exe	JoeSecurity_Remcos	Yara detected Remcos RAT	Joe Security
3lvdjItxde.exe	JoeSecurity_UACBypassusingCMSTP	Yara detected UAC Bypass using CMSTP	Joe Security
3lvdjItxde.exe	Windows_Trojan_Remcos_b296e965	unknown	unknown	0x6c4a8:$a1: Remcos restarted by watchdog! 0x6ca20:$a3: %02i:%02i:%02i:%03i
3lvdjItxde.exe	REMCOS_RAT_variants	unknown	unknown	0x664fc:$str_a1: C:\Windows\System32\cmd.exe 0x66478:$str_a3: /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWOR 0x66478:$str_a4: /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWOR 0x66978:$str_a5: \AppData\Local\Google\Chrome\User Data\Default\Login Data 0x671a8:$str_b1: CreateObject("Scripting.FileSystemObject").DeleteFile(Wscript.ScriptFullName) 0x6656c:$str_b2: Executing file: 0x675ec:$str_b3: GetDirectListeningPort 0x66f98:$str_b4: Set fso = CreateObject("Scripting.FileSystemObject") 0x67118:$str_b7: \update.vbs 0x66594:$str_b9: Downloaded file: 0x66580:$str_b10: Downloading file: 0x66624:$str_b12: Failed to upload file: 0x675b4:$str_b13: StartForward 0x675d4:$str_b14: StopForward 0x67070:$str_b15: fso.DeleteFile " 0x67004:$str_b16: On Error Resume Next 0x670a0:$str_b17: fso.DeleteFolder " 0x66614:$str_b18: Uploaded file: 0x665d4:$str_b19: Unable to delete: 0x67038:$str_b20: while fso.FileExists(" 0x66ab1:$str_c0: [Firefox StoredLogins not found]
3lvdjItxde.exe	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM	Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)	ditekSHen	0x663e8:$guid1: {3E5FC7F9-9A51-4367-9063-A120244FBEC7} 0x6637c:$s1: CoGetObject 0x66390:$s1: CoGetObject 0x663ac:$s1: CoGetObject 0x70338:$s1: CoGetObject 0x6633c:$s2: Elevation:Administrator!new:

Sigma Signatures

⊘No Sigma rule has matched

Snort Signatures

⊘No Snort rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus detection for URL or domain

Source: http://geoplugin.net/json.gp/C

URL Reputation: Label: phishing

Multi AV Scanner detection for submitted file

Source: 3lvdjItxde.exe	ReversingLabs: Detection: 63%
Source: 3lvdjItxde.exe	Virustotal: Detection: 64%			Perma Link

Yara detected Remcos RAT

Source: Yara match

File source: 3lvdjItxde.exe, type: SAMPLE

Machine Learning detection for sample

Source: 3lvdjItxde.exe

Joe Sandbox ML: detected

Source: 3lvdjItxde.exe

Binary or memory string: -----BEGIN PUBLIC KEY-----

memstr_45c9232e-0

Exploits

Yara detected UAC Bypass using CMSTP

Source: Yara match

File source: 3lvdjItxde.exe, type: SAMPLE

Source: 3lvdjItxde.exe

String found in binary or memory: http://geoplugin.net/json.gp/C

E-Banking Fraud

Yara detected Remcos RAT

Source: Yara match

File source: 3lvdjItxde.exe, type: SAMPLE

System Summary

Malicious sample detected (through community Yara rule)

Source: 3lvdjItxde.exe, type: SAMPLE	Matched rule: Windows_Trojan_Remcos_b296e965 Author: unknown
Source: 3lvdjItxde.exe, type: SAMPLE	Matched rule: REMCOS_RAT_variants Author: unknown
Source: 3lvdjItxde.exe, type: SAMPLE	Matched rule: Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) Author: ditekSHen

Source: 3lvdjItxde.exe, type: SAMPLE	Matched rule: Windows_Trojan_Remcos_b296e965 reference_sample = 0ebeffa44bd1c3603e30688ace84ea638fbcf485ca55ddcfd6fbe90609d4f3ed, os = windows, severity = x86, creation_date = 2021-06-10, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Remcos, fingerprint = a5267bc2dee28a3ef58beeb7e4a151699e3e561c16ce0ab9eb27de33c122664d, id = b296e965-a99e-4446-b969-ba233a2a8af4, last_modified = 2021-08-23
Source: 3lvdjItxde.exe, type: SAMPLE	Matched rule: REMCOS_RAT_variants Description = Detects multiple variants of REMCOS seen in the wild. Created by modifying and combining several of Florian\'s recent REMCOS ruleset. This rule aims for broader detection than the original ruleset, which used separate rules for each variant. If you do decide to break it into individual rules, the YARA strings variable names are grouped by the REMCOS variant type., Website = https://www.deadbits.org, Date = 2019-07-18, Repo = https://github.com/deadbits/yara-rules, Author = Adam M. Swanda
Source: 3lvdjItxde.exe, type: SAMPLE	Matched rule: INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM author = ditekSHen, description = Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Source: classification engine

Classification label: mal84.troj.expl.winEXE@0/0@0/0

Source: 3lvdjItxde.exe	ReversingLabs: Detection: 63%
Source: 3lvdjItxde.exe	Virustotal: Detection: 64%

Stealing of Sensitive Information

Yara detected Remcos RAT

Source: Yara match

File source: 3lvdjItxde.exe, type: SAMPLE

Remote Access Functionality

Yara detected Remcos RAT

Source: Yara match

File source: 3lvdjItxde.exe, type: SAMPLE

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	OS Credential Dumping	System Service Discovery	Remote Services	1 Archive Collected Data	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features

Behavior Graph

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Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
3lvdjItxde.exe	63%	ReversingLabs	Win32.Trojan.Remcos
3lvdjItxde.exe	65%	Virustotal		Browse
3lvdjItxde.exe	100%	Joe Sandbox ML

Dropped Files

⊘No Antivirus matches

Unpacked PE Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://geoplugin.net/json.gp/C	100%	URL Reputation	phishing

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://geoplugin.net/json.gp/C	3lvdjItxde.exe	true	URL Reputation: phishing	unknown

World Map of Contacted IPs

⊘No contacted IP infos

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1431549
Start date and time:	2024-04-25 12:23:08 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 1m 52s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	default.jbs
Analysis system description:	Windows 10 x64 22H2 with Office Professional Plus 2019, Chrome 117, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01
Number of analysed new started processes analysed:	1
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	EGA enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Sample name:	3lvdjItxde.exe renamed because original name is a hash value
Original Sample Name:	win_remcos_3ec2af4b5c9bb02513b905dfa7217efdcec08dce2c3d9621bd4792d50e548cf1.exe
Detection:	MAL
Classification:	mal84.troj.expl.winEXE@0/0@0/0
Cookbook Comments:	Found application associated with file extension: .exe Unable to launch sample, stop analysis

Errors

No process behavior to analyse as no analysis process or sample was found
Corrupt sample or wrongly selected analyzer. Details: %1 is not a valid Win32 application.

Warnings

Exclude process from analysis (whitelisted): dllhost.exe

Simulations

Behavior and APIs

⊘No simulations

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	PE32 executable (GUI) Intel 80386, for MS Windows
Entropy (8bit):	6.110253129634026
TrID:	Win32 Executable (generic) a (10002005/4) 99.96% Generic Win/DOS Executable (2004/3) 0.02% DOS Executable Generic (2002/1) 0.02% Autodesk FLIC Image File (extensions: flc, fli, cel) (7/3) 0.00%
File name:	3lvdjItxde.exe
File size:	532'480 bytes
MD5:	d3ccea4baebe97ae4b7adf2c95ce4e20
SHA1:	2c2436357a6d2fa47fb895a6ff0a64ed2c6a1af3
SHA256:	3ec2af4b5c9bb02513b905dfa7217efdcec08dce2c3d9621bd4792d50e548cf1
SHA512:	756c509c7b3bc9690a7172e8929ee46c26ae346c0777b47497d042c32263ddd13babb7cb4ea605fbb19861dcc2324c8246936e803cc06bdc3909c9fd706b4f4a
SSDEEP:	6144:AXIktXfM8Lv86r9uVWAa2je4Z5zl4hgDHQQs4NTQjoHFsAOZZsAX4cN:AX7tPMK8ctGe4Dzl4h2QnuPs/Zs
TLSH:	96B4AF01BAD1C072D57514300D36E776EAB8BD2128364A7FB3D61D5BFE30190B63AAB6
File Content Preview:	MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......d..- ..~ ..~ ..~.f$~3..~.f&~...~.f'~>..~).Q~!..~.Z.~"..~....:..~.......~.......~).F~9..~ ..~...~....D..~..*~!..~....!..~Rich ..

File Icon


Icon Hash:	00928e8e8686b000

Network Behavior

⊘No network behavior found

Statistics

⊘No statistics

System Behavior

⊘No system behavior

Disassembly

⊘No disassembly

Description:	An adversary may compress and/or encrypt data that is collected prior to exfiltration. Compressing the data can help to obfuscate the collected data and minimize the amount of data sent over the network. Encryption can be used to hide information that is being exfiltrated from detection or make exfiltration less conspicuous upon inspection by a defender.
Tactics:	Collection
Data Sources:	Command: Command Execution, File: File Creation, Process: Process Creation, Script: Script Execution
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Windows Analysis Report 3lvdjItxde.exe

Overview

General Information

Detection

Signatures

Classification

Malware Threat Intel

Malware Configuration

Yara Signatures

Initial Sample

Sigma Signatures

Snort Signatures

Joe Sandbox Signatures

AV Detection

Cryptography

Exploits

Networking

E-Banking Fraud

System Summary

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

World Map of Contacted IPs

General Information

Errors

Warnings

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

File Icon

Network Behavior

Statistics

System Behavior

Disassembly

Windows Analysis Report
3lvdjItxde.exe