MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f49fc0151c871c2e0544b32f7c238c810988e9bd63cd2d691adb8f3a34ec02fb. 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: 19


Intelligence 19 IOCs YARA 1 File information Comments

SHA256 hash: f49fc0151c871c2e0544b32f7c238c810988e9bd63cd2d691adb8f3a34ec02fb
SHA3-384 hash: f5e058b4f63c7c814166a9589a8299dfb515c1de5427acbcc5cd9eae5330ce0bd7d0a7d88671f49d5e11ad7dc80a6dc6
SHA1 hash: b06e6e6d7177fcd71426a236e9ca5421a93c9999
MD5 hash: fcd241a7f1912bd24c4e112697668d2d
humanhash: blossom-mobile-enemy-golf
File name:Requirement reference for quotation.exe
Download: download sample
Signature RemcosRAT
File size:3'407'401 bytes
First seen:2024-07-03 05:59:32 UTC
Last seen:2024-07-03 06:35:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:xlQIZKvNy4dAxzfIp9C/3aYth/fBnygcJtbcqd3122WGtcjLJK/L:xlQqUkKEQpg/qYth3BygcnVF1LWu40
Threatray 4'243 similar samples on MalwareBazaar
TLSH T1C1F512457AA34E23FDA24975D0E87AF042FCAEBBB2F5428FDF440C92545353CAA45172
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
365
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
f49fc0151c871c2e0544b32f7c238c810988e9bd63cd2d691adb8f3a34ec02fb.exe
Verdict:
Malicious activity
Analysis date:
2024-07-03 06:02:55 UTC
Tags:
rat remcos remote evasion stealer mpress

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Tags:
Encryption Execution Infostealer Network Static Stealth Remcos
Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Connection attempt
Sending a custom TCP request
Launching the default Windows debugger (dwwin.exe)
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Searching for the window
Blocking the User Account Control
Forced shutdown of a system process
Stealing user critical data
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay remcos
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Detected Remcos RAT
Disables UAC (registry)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Mail credentials (via file registry)
Uses regedit.exe to modify the Windows registry
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1466610 Sample: Requirement reference for q... Startdate: 03/07/2024 Architecture: WINDOWS Score: 100 31 geoplugin.net 2->31 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 21 other signatures 2->43 8 Requirement reference for quotation.exe 1 4 2->8         started        signatures3 process4 signatures5 45 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->45 47 Writes to foreign memory regions 8->47 49 Adds a directory exclusion to Windows Defender 8->49 51 2 other signatures 8->51 11 iexplore.exe 3 13 8->11         started        15 powershell.exe 23 8->15         started        17 WerFault.exe 19 16 8->17         started        19 2 other processes 8->19 process6 dnsIp7 33 157.254.236.96, 2404, 49704, 49705 BEANFIELDCA United States 11->33 35 geoplugin.net 178.237.33.50, 49706, 49707, 80 ATOM86-ASATOM86NL Netherlands 11->35 53 Detected Remcos RAT 11->53 55 Maps a DLL or memory area into another process 11->55 21 iexplore.exe 14 11->21         started        23 iexplore.exe 1 11->23         started        25 iexplore.exe 1 11->25         started        29 2 other processes 11->29 57 Loading BitLocker PowerShell Module 15->57 27 conhost.exe 15->27         started        signatures8 process9
Threat name:
ByteCode-MSIL.Trojan.Remcos
Status:
Malicious
First seen:
2024-07-02 22:51:37 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:mydesktop collection evasion execution rat trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks whether UAC is enabled
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Uses the VBS compiler for execution
Windows security modification
Command and Scripting Interpreter: PowerShell
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
UAC bypass
Windows security bypass
Malware Config
C2 Extraction:
157.254.236.96:2404
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
f49fc0151c871c2e0544b32f7c238c810988e9bd63cd2d691adb8f3a34ec02fb
MD5 hash:
fcd241a7f1912bd24c4e112697668d2d
SHA1 hash:
b06e6e6d7177fcd71426a236e9ca5421a93c9999
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:pe_no_import_table
Description:Detect pe file that no import table

File information


The table below shows additional information about this malware sample such as delivery method and external references.

BLint


The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments