MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c. 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


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c
SHA3-384 hash: 4162b0c78e806101bd94c19c114ed6ca46f2da8ce7042b2153d5acccf6010105c4231ff3df6050ccbcd29d011037a187
SHA1 hash: c59a69a2a19fab12903b38a73fea20edc7013abb
MD5 hash: b7419c5f4cb484befbb098627475a806
humanhash: lima-thirteen-lake-football
File name:rQ000112241R02_October-24.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'903'505 bytes
First seen:2024-11-11 16:00:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:G6NBJgWDzcRxQi9yiLiS02733o8MpIVPc:hBJgWAQi9y+502Cm0
TLSH T19A0612A136A72EAFFD254472C4E470F012FE9D0339F5C99FDF410CAA29066BD81869B5
TrID 44.4% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
Reporter FXOLabs
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
430
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
rQ000112241R02_October-24.exe
Verdict:
Malicious activity
Analysis date:
2024-11-11 16:03:17 UTC
Tags:
rat remcos remote evasion
Link:
https://app.any.run/tasks/256d5cf6-2bd2-48d5-8651-bd37cb626ad8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.PWSX-gen.24535.26299.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67322a760d3694d4fc4e8321
Tags:
shell virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Creating a file
Creating a window
Creating a file in the %AppData% subdirectories
Launching the default Windows debugger (dwwin.exe)
Launching a service
DNS request
Connection attempt
Sending an HTTP GET request
Blocking the User Account Control
Connection attempt to an infection source
Sending a TCP request to an infection source
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aa2bb6b8-33fb-40e2-b773-69dc7f3cb7e6
Result
Threat name:
Remcos
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Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1553741
Signature
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
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
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1553741 Sample: rQ000112241R02_October-24.exe Startdate: 11/11/2024 Architecture: WINDOWS Score: 100 30 geoplugin.net 2->30 36 Suricata IDS alerts for network traffic 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 11 other signatures 2->42 8 rQ000112241R02_October-24.exe 1 4 2->8         started        signatures3 process4 signatures5 44 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->44 46 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->46 48 Writes to foreign memory regions 8->48 50 3 other signatures 8->50 11 ngen.exe 3 1015 8->11         started        16 powershell.exe 23 8->16         started        18 WerFault.exe 19 16 8->18         started        20 3 other processes 8->20 process6 dnsIp7 32 198.46.178.148, 2024, 49730 AS-COLOCROSSINGUS United States 11->32 34 geoplugin.net 178.237.33.50, 49731, 80 ATOM86-ASATOM86NL Netherlands 11->34 28 C:\ProgramData\remcos\logs.dat, data 11->28 dropped 52 Contains functionality to bypass UAC (CMSTPLUA) 11->52 54 Detected Remcos RAT 11->54 56 Contains functionalty to change the wallpaper 11->56 60 5 other signatures 11->60 22 conhost.exe 11->22         started        58 Loading BitLocker PowerShell Module 16->58 24 conhost.exe 16->24         started        26 WmiPrvSE.exe 16->26         started        file8 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c/
Threat name:
ByteCode-MSIL.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2024-11-11 14:28:21 UTC
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w7gycskl4t6zs7ini7g6m2e7gv5vf5fmrrikw4yfnhw66unclkga._file
Verdict:
malicious
Label(s):
dotrunpex
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection discovery evasion execution rat trojan
Link:
https://tria.ge/reports/241111-tf7bratrfr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
System Location Discovery: System Language Discovery
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
Windows security modification
Command and Scripting Interpreter: PowerShell
Looks for VMWare Tools registry key
Detected Nirsoft tools
Looks for VirtualBox Guest Additions in registry
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
UAC bypass
Windows security bypass
Malware Config
C2 Extraction:
198.46.178.148:2024
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ca2b3236-72c7-4c52-b81e-ef9ac0abc9e6
Unpacked files
SH256 hash:
b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c
MD5 hash:
b7419c5f4cb484befbb098627475a806
SHA1 hash:
c59a69a2a19fab12903b38a73fea20edc7013abb
Link:
https://www.unpac.me/results/cbd3514d-afa8-448e-9e22-bb8e9df19f32/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
Link:
https://yomi.yoroi.company/submissions/b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_no_import_table
Create hunting rule
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.

Malspam

RemcosRAT

Executable exe b7cd81494be4fd997d0d47cde6689f357b52f4ac8c50ab730569edef51a25a8c

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Delivery method
Distributed via e-mail attachment

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