MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2. 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: 18

Intelligence 18 IOCs YARA 8 File information Comments

SHA256 hash:	b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2
SHA3-384 hash:	a8414b6b53f131ac7c5bbafbe9c5d69607ff1c1e9b5a7c3343734e82c642059cc0bff4ada4e4fc0fe97cc9dd9c31bdd6
SHA1 hash:	d05de864d273343c4204e9608330a1867a24fa95
MD5 hash:	493a5c9a1469cef994d69f1dd102e0da
humanhash:	green-london-echo-yellow
File name:	493a5c9a1469cef994d69f1dd102e0da.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	8'034'304 bytes
First seen:	2024-12-06 08:24:35 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	6f606f06ec09214ff316970dd345d826 (1 x RemcosRAT)
ssdeep	98304:w3x3FJ58yNYqDP06ZKkcCOQhrgMSVV+uKIqKpFfAlGhrQ:w31H5nqIKCD9uKIqK73B
TLSH	T11F866B973582B26FC84E01368D48F26651FE6E712E2200F7BBF1771919325834E6AD6F
TrID	68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 12.5% (.EXE) Win64 Executable (generic) (10522/11/4) 6.0% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
File icon (PE):
dhash icon	3c1f5bac33339dfc (1 x RemcosRAT)
Reporter	abuse_ch
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

412

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

2024-12-05_493a5c9a1469cef994d69f1dd102e0da_avoslocker_luca-stealer_rhadamanthys

Verdict:

Malicious activity

Analysis date:

2024-12-05 14:54:31 UTC

Tags:

rat remcos remote

Link:

https://app.any.run/tasks/6e653fb2-7073-49ca-8794-8ad2e8874f20

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

SecuriteInfo.com.BackDoor.Remcos.438.12553.8478.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6751bea512e85e185e762bef

Tags:

shellcode remcos extens keylog

Result

Verdict:

Malware

Maliciousness:

Behaviour

Unauthorized injection to a recently created process

Restart of the analyzed sample

Сreating synchronization primitives

Setting a keyboard event handler

Connecting to a non-recommended domain

Connection attempt

Sending a custom TCP request

DNS request

Sending an HTTP GET request

Creating a file

Enabling the 'hidden' option for recently created files

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

adaptive-context explorer fingerprint keylogger lolbin microsoft_visual_cc

Link:

https://www.filescan.io/uploads/6752b4dfc14b32cf1c94b3b8/reports/abd8c255-58c3-4fa6-80bc-77fd5b2655a4/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/5a5a1608-1311-464b-8ae2-23362a9b8ff5

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1569755

Signature

AI detected suspicious 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 unpacking (creates a PE file in dynamic memory)

Drops large PE files

Found malware configuration

Injects a PE file into a foreign processes

Installs a global keyboard hook

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

52%

Verdict:

Susipicious

File Type:

Link:

https://malprob.io/report/b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2024-12-05 09:47:27 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

18 of 38 (47.37%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=w26nxvmce4qnokuutmayiq6hlbzfhcoznt73c2qunaymkz6dalja._file

Verdict:

malicious

Label(s):

remcos

Similar samples:

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:dic discovery persistence rat

Link:

https://tria.ge/reports/241206-kbamjsykgs/

Behaviour

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Adds Run key to start application

Remcos

Remcos family

Malware Config

C2 Extraction:

5.34.178.128:8090

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/980d81b2-5b8a-4a1b-a278-3b3c5744611e

Unpacked files

SH256 hash:

8368c3e8c17fb365b438818808dee4c7a74769a3287944e80ad8a4e9afd4216f

MD5 hash:

cec523dbb312c6f3fcd41ec864b4f51c

SHA1 hash:

e42e993fc86552e5cada0640e5abbffc08d2f037

Detections:

Remcos

win_remcos_auto

win_remcos_w0

malware_windows_remcos_rat

INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

win_remcos_rat_unpacked

Link:

https://www.unpac.me/results/f90063d2-ffed-439a-9c9a-70e9255333a4/

SH256 hash:

b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2

MD5 hash:

493a5c9a1469cef994d69f1dd102e0da

SHA1 hash:

d05de864d273343c4204e9608330a1867a24fa95

Link:

https://www.unpac.me/results/f90063d2-ffed-439a-9c9a-70e9255333a4/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b6bcdbd58227/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/b6bcdbd5822720d72a949b018443c758725389d96cffb16a146830c567c302d2

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:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	RansomPyShield_Antiransomware Create hunting rule
Author:	XiAnzheng
Description:	Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)

File information

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

No further information available

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Reviews

ID	Capabilities	Evidence
COM_BASE_API	Can Download & Execute components	ole32.dll::CLSIDFromProgID ole32.dll::CoCreateInstance ole32.dll::CoFreeUnusedLibraries ole32.dll::CreateStreamOnHGlobal
GDI_PLUS_API	Interfaces with Graphics	gdiplus.dll::GdiplusStartup gdiplus.dll::GdiplusShutdown gdiplus.dll::GdipDeleteGraphics gdiplus.dll::GdipAlloc gdiplus.dll::GdipCreateFromHDC
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::PlaySoundW
SHELL_API	Manipulates System Shell	SHELL32.dll::ShellExecuteW SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryW KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileW KERNEL32.dll::CreateFileA KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW SHLWAPI.dll::PathRemoveFileSpecW KERNEL32.dll::GetWindowsDirectoryW
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW
WIN_USER_API	Performs GUI Actions	USER32.dll::AppendMenuW USER32.dll::CreateMenu ole32.dll::OleCreateMenuDescriptor USER32.dll::EmptyClipboard USER32.dll::OpenClipboard USER32.dll::PeekMessageW

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