MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7ee8fe295d599091322ede91d069448210d858a52485835e327d14eaad1474d3. 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


Intelligence 16 IOCs YARA 3 File information Comments

SHA256 hash: 7ee8fe295d599091322ede91d069448210d858a52485835e327d14eaad1474d3
SHA3-384 hash: f4c9f68301f173715733567024abd326e02dbd66420796cbad9779f3de9149e7423c77792aecde4a900bd8b644f80479
SHA1 hash: 5843b894ea563ce3747da34a223b27f853c1aff3
MD5 hash: 587a6e61b0d953b689b3e19b252f7db6
humanhash: fillet-connecticut-floor-pip
File name:Confirmation Receipt02001859.pdf.exe
Download: download sample
Signature RemcosRAT
File size:1'685'504 bytes
First seen:2024-07-16 19:24:17 UTC
Last seen:2024-07-24 16:48:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c89d3202415aaf9c8f0452bb97146f27 (5 x RemcosRAT, 1 x AveMariaRAT)
ssdeep 24576:tHb5Bli50xv2T4EM9X0cjRjFmhco/ZyFvaZjeCi8DI/fdKFZAl6GSbxpSA07YN3t:Fb5W+uWRhKV4FceCxyKFZ
Threatray 26 similar samples on MalwareBazaar
TLSH T193759C30F1F00436D2122AFD8C22EAADD716BB3E5918D681BAECF949297B5803457DD7
TrID 36.1% (.SCR) Windows screen saver (13097/50/3)
29.0% (.EXE) Win64 Executable (generic) (10523/12/4)
12.4% (.EXE) Win32 Executable (generic) (4504/4/1)
5.7% (.EXE) Win16/32 Executable Delphi generic (2072/23)
5.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d8dcded6c6a2a2c8 (5 x RemcosRAT, 1 x AveMariaRAT)
Reporter abuse_ch
Tags:exe RemcosRAT

Intelligence


File Origin
# of uploads :
3
# of downloads :
409
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
ConfirmationReceipt02001859.pdf.exe
Verdict:
Malicious activity
Analysis date:
2024-07-16 19:36:38 UTC
Tags:
remcos rat keylogger remote

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Creating a process from a recently created file
Creating a file in the %temp% subdirectories
Running batch commands
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Stealing user critical data
Launching a tool to kill processes
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
borland_delphi explorer fingerprint keylogger lolbin masquerade
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:
Remcos, DBatLoader
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to detect sleep reduction / modifications
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
Creates a thread in another existing process (thread injection)
Delayed program exit found
Detected Remcos RAT
Detected unpacking (changes PE section rights)
Drops executables to the windows directory (C:\Windows) and starts them
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Powershell is started from unusual location (likely to bypass HIPS)
Reads the Security eventlog
Reads the System eventlog
Sample uses process hollowing technique
Sigma detected: Execution from Suspicious Folder
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Parent in Public Folder Suspicious Process
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Suspicious Creation with Colorcpl
Sigma detected: Suspicious Double Extension File Execution
Sigma detected: TrustedPath UAC Bypass Pattern
UAC bypass detected (Fodhelper)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes to foreign memory regions
Yara detected DBatLoader
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: 1474440 Sample: Confirmation Receipt0200185... Startdate: 16/07/2024 Architecture: WINDOWS Score: 100 89 zuesremmy.duckdns.org 2->89 91 2010.filemail.com 2->91 93 2 other IPs or domains 2->93 103 Found malware configuration 2->103 105 Malicious sample detected (through community Yara rule) 2->105 107 Antivirus / Scanner detection for submitted sample 2->107 111 21 other signatures 2->111 12 Confirmation Receipt02001859.pdf.exe 1 4 2->12         started        17 SystemSettingsAdminFlows.exe 2->17         started        signatures3 109 Uses dynamic DNS services 89->109 process4 dnsIp5 101 ip.2010.filemail.com 50.7.82.90, 443, 49730, 49731 COGENT-174US United States 12->101 85 C:\Users\Public\Libraries\okaffbbX.pif, PE32 12->85 dropped 87 C:\Users\Public\Xbbffako.url, MS 12->87 dropped 149 Writes to foreign memory regions 12->149 151 Allocates memory in foreign processes 12->151 153 Sample uses process hollowing technique 12->153 155 2 other signatures 12->155 19 okaffbbX.pif 8 12->19         started        23 colorcpl.exe 5 16 12->23         started        26 extrac32.exe 12->26         started        file6 signatures7 process8 dnsIp9 73 C:\Users\user\AppData\Local\Temp\...\8949.bat, ASCII 19->73 dropped 115 Detected unpacking (changes PE section rights) 19->115 28 cmd.exe 1 19->28         started        95 zuesremmy.duckdns.org 103.198.26.39, 49733, 49734, 54888 NXGNET-AS-APNextgenNetworksAU unknown 23->95 97 127.0.0.1 unknown unknown 23->97 99 geoplugin.net 178.237.33.50, 49735, 80 ATOM86-ASATOM86NL Netherlands 23->99 75 C:\ProgramData\remcos\logs.dat, data 23->75 dropped 117 Contains functionality to bypass UAC (CMSTPLUA) 23->117 119 Detected Remcos RAT 23->119 121 Uses ping.exe to sleep 23->121 123 8 other signatures 23->123 31 colorcpl.exe 23->31         started        33 colorcpl.exe 23->33         started        35 colorcpl.exe 23->35         started        37 colorcpl.exe 23->37         started        file10 signatures11 process12 signatures13 145 Drops executables to the windows directory (C:\Windows) and starts them 28->145 147 Adds a directory exclusion to Windows Defender 28->147 39 alpha.exe 28->39         started        42 alpha.exe 2 28->42         started        44 extrac32.exe 1 28->44         started        53 10 other processes 28->53 47 WerFault.exe 31->47         started        49 WerFault.exe 33->49         started        51 WerFault.exe 35->51         started        process14 file15 127 Adds a directory exclusion to Windows Defender 39->127 55 xkn.exe 39->55         started        129 Uses ping.exe to sleep 42->129 131 Uses ping.exe to check the status of other devices and networks 42->131 83 C:\Users\Public\alpha.exe, PE32+ 44->83 dropped 133 Drops PE files to the user root directory 44->133 135 Drops or copies cmd.exe with a different name (likely to bypass HIPS) 44->135 58 extrac32.exe 1 53->58         started        61 extrac32.exe 53->61         started        63 extrac32.exe 53->63         started        65 2 other processes 53->65 signatures16 process17 file18 137 Powershell is started from unusual location (likely to bypass HIPS) 55->137 139 Adds a directory exclusion to Windows Defender 55->139 141 Reads the Security eventlog 55->141 143 Reads the System eventlog 55->143 67 alpha.exe 55->67         started        77 C:\Users\Public\ger.exe, PE32+ 58->77 dropped 79 C:\Users\Public\xkn.exe, PE32+ 61->79 dropped 81 C:\Windows \System32\per.exe, PE32+ 63->81 dropped signatures19 process20 signatures21 113 Adds a directory exclusion to Windows Defender 67->113 70 ger.exe 67->70         started        process22 signatures23 125 UAC bypass detected (Fodhelper) 70->125
Threat name:
Win32.Backdoor.Remcos
Status:
Suspicious
First seen:
2024-07-16 08:34:17 UTC
File Type:
PE (Exe)
Extracted files:
44
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection persistence rat
Behaviour
Kills process with taskkill
Modifies registry class
Modifies system certificate store
Runs ping.exe
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Malware Config
C2 Extraction:
127.0.0.1:54888
zuesremmy.duckdns.org:54888
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
7ee8fe295d599091322ede91d069448210d858a52485835e327d14eaad1474d3
MD5 hash:
587a6e61b0d953b689b3e19b252f7db6
SHA1 hash:
5843b894ea563ce3747da34a223b27f853c1aff3
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:BitcoinAddress
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Borland
Author:malware-lu
Rule name:shellcode
Author:nex
Description:Matched shellcode byte patterns

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_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryExA
kernel32.dll::LoadLibraryA
kernel32.dll::GetStartupInfoA
kernel32.dll::GetDiskFreeSpaceA
kernel32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WinExec
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileA
kernel32.dll::FindFirstFileA
version.dll::GetFileVersionInfoSizeA
version.dll::GetFileVersionInfoA
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyExA
advapi32.dll::RegQueryValueExA
WIN_USER_APIPerforms GUI Actionsuser32.dll::ActivateKeyboardLayout
user32.dll::CreateMenu
user32.dll::FindWindowA
user32.dll::PeekMessageA
user32.dll::PeekMessageW
user32.dll::CreateWindowExA

Comments