MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf. 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: 20

Intelligence 20 IOCs YARA 14 File information Comments 1

SHA256 hash:	f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf
SHA3-384 hash:	c5b5f03df1cb05deb59dcf4474d67985d7ad98119479cb145186862c06b186733bf54be124f5cb3ed51573d2cecb1611
SHA1 hash:	ee32f10df48b2989da006c198cb1593ff503ea30
MD5 hash:	87f462061a7d16962f60ce5e3fc2ac05
humanhash:	cardinal-rugby-floor-bravo
File name:	17389194640a75498800959210a5e2dc4e4a54ef8f97997861d794a065114c5234e6d4ed86682.dat-decoded
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	480'768 bytes
First seen:	2025-02-07 09:11:06 UTC
Last seen:	2025-02-22 23:25:19 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	5d354883fe6f15fcf48045037a99fb7a (118 x RemcosRAT)
ssdeep	12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSen9:uiLJbpI7I2WhQqZ7e9
TLSH	T185A4AE02BAD2C072D57161344D2AE735DABDBD202835997BB3E61D5BFD30180A73A7B2
TrID	32.2% (.EXE) Win64 Executable (generic) (10522/11/4) 20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 15.4% (.EXE) Win16 NE executable (generic) (5038/12/1) 13.7% (.EXE) Win32 Executable (generic) (4504/4/1) 6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
File icon (PE):
dhash icon	c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter	abuse_ch
Tags:	base64-decoded exe RemcosRAT

abuse_ch

Malware dropped as base64 encoded payload

Intelligence

File Origin

# of uploads :

# of downloads :

502

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

17389194640a75498800959210a5e2dc4e4a54ef8f97997861d794a065114c5234e6d4ed86682.dat-decoded

Verdict:

Malicious activity

Analysis date:

2025-02-07 09:11:44 UTC

Tags:

rat remcos remote

Link:

https://app.any.run/tasks/a8e9fb01-fd05-4593-821c-9312edf5e0cd

Note:

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

Detection(s):

Win.Trojan.Remcos-9841897-0

Win.Trojan.Remcos-10002580-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67a5cf0eab8a2d1c6bcd6f07

Tags:

dropper remcos keylog word

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Setting a keyboard event handler

DNS request

Connection attempt

Sending a custom TCP request

Sending an HTTP GET request

Creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd config-extracted crypto evasive eventvwr fingerprint fingerprint keylogger lolbin microsoft_visual_cc obfuscated packed rat remcos remcos windows

Link:

https://www.filescan.io/uploads/67a5ce35c039745a58bec537/reports/4f3bd4e2-9789-4b48-9bce-151c1ec8c2c8/overview

Verdict:

Malicious

Labled as:

Dacic.A9349469.A.Generic

Link:

https://www.hybrid-analysis.com/sample/f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf

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.

Malware family:

REMCOS

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/263108e2-410f-4ef8-9dc0-239c091caf80

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1609088

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

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

Found malware configuration

Installs a global keyboard hook

Joe Sandbox ML detected suspicious sample

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Yara detected Remcos RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf/

Threat name:

Win32.Trojan.Remcos

Status:

Malicious

First seen:

2025-02-07 09:12:15 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

24 of 24 (100.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7aufmh3v5zteiuhbvlbjevvkbl7wxu2jemxzruzqjdo6pdajmk7q._file

Verdict:

malicious

Label(s):

remcos

Similar samples:

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:svc discovery

Link:

https://tria.ge/reports/250207-k5nq9sxndr/

Behaviour

Suspicious use of SetWindowsHookEx

System Location Discovery: System Language Discovery

Malware Config

C2 Extraction:

meme7.work.gd:3124

Verdict:

Malicious

Tags:

rat remcos Win.Trojan.Remcos-9841897-0

YARA:

malware_windows_remcos_rat REMCOS_RAT_variants Remcos_Payload win_remcos_rat_unpacked Windows_Trojan_Remcos_b296e965 MAL_EXE_Remcos_RAT_Jul_22 Remcos

Link:

https://app.threat.zone/submission/1c15ab69-47e4-46c9-841d-74f63f7fdba4

Unpacked files

SH256 hash:

f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf

MD5 hash:

87f462061a7d16962f60ce5e3fc2ac05

SHA1 hash:

ee32f10df48b2989da006c198cb1593ff503ea30

Detections:

win_remcos_w0

win_remcos_auto

Remcos

Link:

https://www.unpac.me/results/7fbe0603-3121-4d91-b698-11554c2b234d/

Malware family:

Remcos

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/f828561f75ee/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/f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf

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

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	iexplorer_remcos Create hunting rule
Author:	iam-py-test
Description:	Detect iexplorer being taken over by Remcos

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer Create hunting rule
Author:	ditekSHen
Description:	detects Windows exceutables potentially bypassing UAC using eventvwr.exe

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Remcos Create hunting rule
Author:	kevoreilly
Description:	Remcos Payload

Rule name:	REMCOS_RAT_variants Create hunting rule

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

Rule name:	Windows_Trojan_Remcos_b296e965 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set

Rule name:	win_remcos_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.remcos.

Rule name:	win_remcos_rat_unpacked Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	win_remcos_w0 Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in remcos rat Samples.

Rule name:	yarahub_win_remcos_rat_unpacked_aug_2023 Create hunting rule
Author:	Matthew @ Embee_Research

File information

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

0a75498800959210a5e2dc4e4a54ef8f97997861d794a065114c5234e6d4ed86

RemcosRAT

exe f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf

(this sample)

Dropped by

SHA256 0a75498800959210a5e2dc4e4a54ef8f97997861d794a065114c5234e6d4ed86

Dropped by

MD5 a9f1628592d2e826b1e4788c231d72fd

URLhaus

https://urlhaus.abuse.ch/url/3430811/

Delivery method

Distributed via web download

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
CHECK_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
GDI_PLUS_API	Interfaces with Graphics	gdiplus.dll::GdiplusStartup gdiplus.dll::GdipGetImageEncoders gdiplus.dll::GdipGetImageEncodersSize gdiplus.dll::GdipAlloc
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::mciSendStringA WINMM.dll::mciSendStringW WINMM.dll::PlaySoundW WINMM.dll::waveInAddBuffer WINMM.dll::waveInClose WINMM.dll::waveInOpen
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AdjustTokenPrivileges
SHELL_API	Manipulates System Shell	SHELL32.dll::ShellExecuteExA SHELL32.dll::ShellExecuteW
URL_MONIKERS_API	Can Download & Execute components	urlmon.dll::URLDownloadToFileW urlmon.dll::URLOpenBlockingStreamW
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessW KERNEL32.dll::CreateProcessA KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken KERNEL32.dll::WriteProcessMemory KERNEL32.dll::CloseHandle WININET.dll::InternetCloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetDriveTypeA KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineW KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AllocConsole KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::DeleteFileA KERNEL32.dll::MoveFileExW KERNEL32.dll::MoveFileW
WIN_BASE_USER_API	Retrieves Account Information	ADVAPI32.dll::GetUserNameW ADVAPI32.dll::LookupPrivilegeValueA
WIN_CRYPT_API	Uses Windows Crypt API	ADVAPI32.dll::CryptAcquireContextA ADVAPI32.dll::CryptGenRandom
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyA ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegCreateKeyW ADVAPI32.dll::RegDeleteKeyA ADVAPI32.dll::RegOpenKeyExA ADVAPI32.dll::RegOpenKeyExW
WIN_SVC_API	Can Manipulate Windows Services	ADVAPI32.dll::ChangeServiceConfigW ADVAPI32.dll::ControlService ADVAPI32.dll::OpenSCManagerW ADVAPI32.dll::OpenSCManagerA ADVAPI32.dll::OpenServiceW ADVAPI32.dll::QueryServiceConfigW
WIN_USER_API	Performs GUI Actions	USER32.dll::AppendMenuA USER32.dll::EmptyClipboard USER32.dll::OpenClipboard USER32.dll::CreateWindowExA

Comments

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commented on 2025-02-22 23:46:36 UTC

85f079d42497f232431cf179530b6614d0409b2e7424b9442a9d2f41218bd150 _DOCUMENT_MAIL_MK77123.PDF.gz
419dcf04a8eb8455ea63458338d802c98522f70d2d04cf218d6fcbd2e5d87ba8 _DOCUMENT_MAIL_MK77123.PDF.js

hXXps://paste[.]ee/d/85AJMNma

690b31fd790e1c47724b42c4440c8b729f0ddaa80150bd7cf631f913638c77f9 paste.ee_d_85AJMNma.js
5ceb49490880a023c8b3866153741a9036d7907c49b4aecb331cb9c0f251bdfe paste.ee_d_85AJMNma_decoded_PS.cmd

hXXps://3005.filemail[.]com/api/file/get?filekey=nIx_5T0LxHOBjilNb9CRviabPjrW2dlC-LxeOdJPF_Z_1MP6CuQBS5KcptA&pk_vid=342803d1cc4e3b801739359203b5fe9d
https://www.virustotal.com/gui/url/1fe27980841066c272c061a618dcfdbf7f083ee8216c08e98ec2c40d78ea27ba
https://www.virustotal.com/gui/file/ef4472cf2616798f6d8726e148d68974a7edb830f622d130f58fcdf0837147b1

hXXps://stakloram[.]rs/css/ym.txt
0a75498800959210a5e2dc4e4a54ef8f97997861d794a065114c5234e6d4ed86 stakloram.rs_css_ym.txt

https://www.virustotal.com/gui/file/0a75498800959210a5e2dc4e4a54ef8f97997861d794a065114c5234e6d4ed86
https://www.virustotal.com/gui/file/f828561f75ee664450e1aac29256aa0aff6bd349232f98d33048dde78c0962bf

Remcos RAT C2: meme7.work[.]gd:3124 / 176.65.141[.]238 (Mutex: meme-ZPFPWZ)