MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8. 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: 15

Intelligence 15 IOCs YARA 31 File information Comments

SHA256 hash:	4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8
SHA3-384 hash:	8cf5528857ce347944b97fc7069e48cec1816c78f434b863117a73c344706ee2332619d480d31b2e758f44ec9fef6abe
SHA1 hash:	32aa6710e55e113c578904884ce9dafc47d907d8
MD5 hash:	d5a3c4222b087ecabf47ffa4b4b05ec1
humanhash:	lima-fish-hot-india
File name:	z000023947538734 FAC-ELECTRONICAPDF.exe
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	7'886'736 bytes
First seen:	2024-09-21 23:03:43 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f4fa38c719fdd9219d9ad9a0cea10635 (1 x RemcosRAT)
ssdeep	98304:z5djeXAhCy1HDJQv8kVH0WUjqqTnYRoeEgmn1NX+6fnUXSvPLOqq21R2ajvLjgdR:z5djUAhCy1dUVx3vinLVdXMakf
TLSH	T18C867C22B393C0A5E5661234D637D7F412A6FF74992345C77DAC3E6E3B30292582CE92
TrID	45.9% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 33.1% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9) 8.4% (.EXE) Win64 Executable (generic) (10523/12/4) 4.0% (.EXE) Win16 NE executable (generic) (5038/12/1) 3.5% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
File icon (PE):
dhash icon	e88e336969338ee8 (1 x RaccoonStealer, 1 x RemcosRAT)
Reporter	nickkuechel
Tags:	exe RAT remcos RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

531

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

z000023947538734FACELECTRONICAPDF.exe

Verdict:

Malicious activity

Analysis date:

2024-09-20 21:00:26 UTC

Tags:

rat remcos remote

Link:

https://app.any.run/tasks/23e9a98f-88e9-4395-9c09-3770413d5df3

Note:

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

Detection(s):

Win.Packed.Icloader-6859951-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66ef50e51db25d66857c9142

Tags:

Encryption Infostealer Static Stealth Heur

Result

Verdict:

Suspicious

Maliciousness:

Behaviour

Unauthorized injection to a recently created process

Restart of the analyzed sample

Сreating synchronization primitives

Setting a keyboard event handler

DNS request

Creating a file

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

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug anti-vm crypto cscript dllhost evasive explorer fingerprint keylogger lolbin microsoft_visual_cc msiexec overlay packed packed regedit rundll32 shell32 stealer surtr

Link:

https://www.filescan.io/uploads/66ef50e43c9389b729bab40d/reports/f72e4020-57f9-4a8c-ac1d-f2dfc05052d1/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8

Gathering data

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1515244

Signature

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

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

Sigma detected: Remcos

Suricata IDS alerts for network traffic

Yara detected Remcos RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

28%

Verdict:

Benign

File Type:

Link:

https://malprob.io/report/4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2024-09-20 19:03:09 UTC

File Type:

PE (Exe)

Extracted files:

381

AV detection:

13 of 24 (54.17%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=jnbo22762g6wj66ma7so6eek44kyalku6ll3cjuk5kzz3crjm3ua._file

Verdict:

malicious

Label(s):

remcos

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:20???septiem��2024 discovery persistence rat

Link:

https://tria.ge/reports/240921-218z3syhjn/

Behaviour

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Adds Run key to start application

Remcos

Malware Config

C2 Extraction:

ufye28738bd3yv23d783.con-ip.com:5023

Verdict:

Malicious

Tags:

remcos

YARA:

n/a

Link:

https://app.threat.zone/submission/03bc889d-3480-445d-a392-60e3fd16a5a2

Unpacked files

SH256 hash:

26d6cd545f57071e3a01e5e39e68fde63af8e086bd39eff2b746633006d71511

MD5 hash:

207a42522f394cd5cd38d650d020ba07

SHA1 hash:

6ae57818a3ada5a4c44ced08fb976244d0f5e977

Link:

https://www.unpac.me/results/4287a3d3-309c-4c20-a852-5aab2b26bb88/

SH256 hash:

82a7cce835e7fb76de5f801804fe7739f25bd116719b73c5aabbd08e9f4ab33b

MD5 hash:

86030970fbc87a264f23ab8665c3d683

SHA1 hash:

7df04b68252ad7ed8614d89d312652c656795d6f

Link:

https://www.unpac.me/results/4287a3d3-309c-4c20-a852-5aab2b26bb88/

SH256 hash:

12924b881bb8fac67dd3e9946717127df527ac25bb95dc774b0206535568d0fc

MD5 hash:

947b28873e3e72e6c294834779436d4c

SHA1 hash:

5b1c7074e76529df6618a818caccdedd04d83b90

Detections:

Remcos

win_remcos_auto

win_remcos_w0

malware_windows_remcos_rat

Link:

https://www.unpac.me/results/4287a3d3-309c-4c20-a852-5aab2b26bb88/

SH256 hash:

4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8

MD5 hash:

d5a3c4222b087ecabf47ffa4b4b05ec1

SHA1 hash:

32aa6710e55e113c578904884ce9dafc47d907d8

Link:

https://www.unpac.me/results/4287a3d3-309c-4c20-a852-5aab2b26bb88/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4b42ed6bfed1/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/4b42ed6bfed1bd64fbcc07e4ef108ae715802d54f2d7b1268aeab39d8a2966e8

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

Rule name:	Check_Dlls Create hunting rule

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

Rule name:	Detect_APT29_WINELOADER_Backdoor Create hunting rule
Author:	daniyyell
Description:	Detects APT29's WINELOADER backdoor variant used in phishing campaigns, this rule also detect bad pdf,shtml,htm and vbs or maybe more depends
Reference:	https://cloud.google.com/blog/topics/threat-intelligence/apt29-wineloader-german-political-parties

Rule name:	Detect_Malicious_VBScript_Base64 Create hunting rule
Author:	daniyyell
Description:	Detects malicious VBScript patterns, including Base64 decoding, file operations, and PowerShell.

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

Rule name:	grakate_stealer_nov_2021 Create hunting rule

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing SQL queries to confidential data stores. Observed in infostealers

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

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

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	PE_Potentially_Signed_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Sectigo_Code_Signed Create hunting rule
Description:	Detects code signed by the Sectigo RSA Code Signing CA
Reference:	https://bazaar.abuse.ch/export/csv/cscb/

Rule name:	SHA512_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA384/SHA512 constants

Rule name:	Surtr Create hunting rule
Author:	Katie Kleemola
Description:	Rule for Surtr Stage One

Rule name:	SurtrStrings Create hunting rule
Author:	Katie Kleemola
Description:	Strings for Surtr

Rule name:	Sysmain Create hunting rule

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
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::ConvertSidToStringSidW ADVAPI32.dll::CopySid ADVAPI32.dll::EqualSid ADVAPI32.dll::FreeSid ADVAPI32.dll::GetLengthSid
COM_BASE_API	Can Download & Execute components	ole32.dll::CLSIDFromProgID ole32.dll::CoCreateInstance ole32.dll::CoInitializeSecurity ole32.dll::CreateStreamOnHGlobal
GDI_PLUS_API	Interfaces with Graphics	gdiplus.dll::GdiplusStartup gdiplus.dll::GdiplusShutdown gdiplus.dll::GdipDeleteGraphics gdiplus.dll::GdipFillRectangleI gdiplus.dll::GdipDeleteBrush gdiplus.dll::GdipAlloc
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AccessCheck ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::DuplicateToken ADVAPI32.dll::GetFileSecurityW ADVAPI32.dll::GetSidIdentifierAuthority ADVAPI32.dll::GetTokenInformation
SHELL_API	Manipulates System Shell	SHELL32.dll::ShellExecuteExW SHELL32.dll::ShellExecuteW SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessW KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDriveTypeW KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileMappingA KERNEL32.dll::CreateFileA KERNEL32.dll::CreateFileW KERNEL32.dll::CreateFileMappingW
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameW ADVAPI32.dll::GetUserNameW ADVAPI32.dll::LookupAccountNameW ADVAPI32.dll::LookupAccountSidW ADVAPI32.dll::LookupPrivilegeNameW ADVAPI32.dll::LookupPrivilegeValueW
WIN_CRYPT_API	Uses Windows Crypt API	ADVAPI32.dll::CryptAcquireContextA ADVAPI32.dll::CryptAcquireContextW ADVAPI32.dll::CryptCreateHash ADVAPI32.dll::CryptGenRandom ADVAPI32.dll::CryptGetHashParam ADVAPI32.dll::CryptHashData
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegLoadKeyW ADVAPI32.dll::RegNotifyChangeKeyValue ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryInfoKeyW
WIN_USER_API	Performs GUI Actions	USER32.dll::AppendMenuW USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::FindWindowW USER32.dll::OpenClipboard USER32.dll::PeekMessageW

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample