MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707
SHA3-384 hash: 7cd871db7c9ac7ccc004b0335786b4edd5a04969e12e65fcdbd95ebe2d8854c83391c111245bd23ab525ccfb16e6666a
SHA1 hash: 9af2d685acc4fd719390c8564f89df203af3b335
MD5 hash: e5767608d3a2d83625b16c4666f14485
humanhash: cold-kansas-lithium-iowa
File name:e5767608d3a2d83625b16c4666f14485
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'317'888 bytes
First seen:2024-04-23 09:13:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:aAHnh+eWsN3skA4RV1Hom2KXMmHavXxo60v7yMB2+LML5:th+ZkldoPK8YavXxwVBHLU
Threatray 209 similar samples on MalwareBazaar
TLSH T16155CE0273D1D036FFABA2739B6AF6415ABD79250123852F13982D79BD701B1223E763
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10523/12/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
383
Origin country :
FR FR
Vendor Threat Intelligence
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
autoit fingerprint keylogger lolbin packed shell32
Link:
https://www.filescan.io/uploads/66277bdbc5dabc22b2063b83/reports/d1782bc2-9d56-4c5f-8fed-9a1383ae543a/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1e207ed7-443f-4499-8de3-d122ce84f8d3
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1430231
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
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
Drops VBS files to the startup folder
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1430231 Sample: TcnD64eVFK.exe Startdate: 23/04/2024 Architecture: WINDOWS Score: 100 36 geoplugin.net 2->36 38 bossnacarpet.com 2->38 56 Multi AV Scanner detection for domain / URL 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 9 other signatures 2->62 9 TcnD64eVFK.exe 6 2->9         started        13 wscript.exe 1 2->13         started        signatures3 process4 file5 32 C:\Users\user\AppData\Local\...\cc.exe, PE32 9->32 dropped 78 Binary is likely a compiled AutoIt script file 9->78 15 cc.exe 3 9->15         started        80 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->80 19 cc.exe 2 13->19         started        signatures6 process7 file8 34 C:\Users\user\AppData\Roaming\...\cc.vbs, data 15->34 dropped 44 Antivirus detection for dropped file 15->44 46 Binary is likely a compiled AutoIt script file 15->46 48 Machine Learning detection for dropped file 15->48 50 Drops VBS files to the startup folder 15->50 21 svchost.exe 15->21         started        24 cc.exe 2 15->24         started        52 Writes to foreign memory regions 19->52 54 Maps a DLL or memory area into another process 19->54 26 svchost.exe 19->26         started        signatures9 process10 signatures11 64 Contains functionality to bypass UAC (CMSTPLUA) 21->64 66 Contains functionalty to change the wallpaper 21->66 68 Contains functionality to steal Chrome passwords or cookies 21->68 76 3 other signatures 21->76 70 Binary is likely a compiled AutoIt script file 24->70 72 Writes to foreign memory regions 24->72 74 Maps a DLL or memory area into another process 24->74 28 svchost.exe 3 13 24->28         started        process12 dnsIp13 40 geoplugin.net 178.237.33.50, 49738, 80 ATOM86-ASATOM86NL Netherlands 28->40 42 bossnacarpet.com 107.175.229.143, 30902, 49737 AS-COLOCROSSINGUS United States 28->42 82 System process connects to network (likely due to code injection or exploit) 28->82 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-04-22 11:10:08 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kda7i77qj6jb4nn6uqkjzrdtp7adfceyrr4nlody4ockgqkl24dq._file
Verdict:
malicious
Similar samples:
06021c0112bb26e31ebafa8b20b584058634ebe536d4b2aff216174f6c7550bf
RemcosRAT
1915126c27ba8566c624491bd2613215021cc2b28e5e6f3af69e9e994327f3ac
RemcosRAT
1c27a36f09916fc04a5b43b2a7a0869d62e31d5c28a315257caf661b428fe221
RemcosRAT
23906739f99511519d539a4fa691df58369028cb908ba5a442270a0551d1be3f
RemcosRAT
6d1cfff093998c807b9c5dc3fd122adbea40c5bad0cad4cbe10b43932c28bdd9
RemcosRAT
9e445bda203f7d03e3b375d25b2f9e50f1d7b8f8136c13f3c6b387bc54c54da1
RemcosRAT
a89f1b8bf251aa358c639ec8a4348359239ce6b00541ba41d6911feec404ebd7
RemcosRAT
f60f32ec899bcb92fd50491a8c32f0548afbd4dc02462dfa373d484b4b161a86
RemcosRAT
+ 199 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240423-k7a8ysfa41/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Unpacked files
SH256 hash:
9cb470a2c31cfc425b72f7d6be0d1fd9f8bdff4c95ada57db449ea954f5c1e31
MD5 hash:
1dd33c65fdf09f0f6d9814c6b4d928b2
SHA1 hash:
13148ff2518e4999dc35c20ba05f1650ad7ce5eb
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/021a4681-067f-46ca-bd51-bf7675dfaa56/
Parent samples :
8e92afa2cb2358fd64c3e23016c726536072fb3c4d0fcd76f55b5970cf3be704
50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707
SH256 hash:
50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707
MD5 hash:
e5767608d3a2d83625b16c4666f14485
SHA1 hash:
9af2d685acc4fd719390c8564f89df203af3b335
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/021a4681-067f-46ca-bd51-bf7675dfaa56/
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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research

File information

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

Web download

RemcosRAT

Executable exe 50c1f47ff04f921e35bea4149cc4737fc03288988c78d5b878e384a3414bd707

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2823963/

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 (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

Comments


Avatar
zbet commented on 2024-04-23 09:13:14 UTC

url : hxxp://192.3.176.131/S2104M/wininit.exe