MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c. 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 18 File information Comments

SHA256 hash:	7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c
SHA3-384 hash:	fa9195b8367aebab495a9f5d6de459a4dd5805d940a11b30b2226d68af13724a7d06025ef0c463ad40a744e3568a14a2
SHA1 hash:	9fd2aca60e95212de7ccc546dd82729b5d050f02
MD5 hash:	d457d91b513ac2e3a4b539c28537da71
humanhash:	october-south-east-skylark
File name:	7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c
Download:	download sample
Signature	RemcosRAT Create hunting rule
File size:	493'056 bytes
First seen:	2024-11-05 11:26:16 UTC
Last seen:	2024-11-11 10:46:08 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	829c4cf6a1c5c2df3a1bc836f906ee28 (1 x RemcosRAT)
ssdeep	12288:WuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDM:109AfNIEYsunZvZ19Z
Threatray	3 similar samples on MalwareBazaar
TLSH	T1A9A4BF01B6D2C072D57625300D26E775DEB9BD212835897BB3DA1D6BFE30180E63ABB1
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	adrian__luca
Tags:	exe RemcosRAT

Intelligence

File Origin

# of uploads :

# of downloads :

400

Origin country :

Vendor Threat Intelligence

Malware family:

remcos

ID:

File name:

7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c

Verdict:

Malicious activity

Analysis date:

2024-11-05 11:41:13 UTC

Tags:

remcos rat

Link:

https://app.any.run/tasks/24b297a0-0cfb-4f59-befc-9ed5d8a1bb9b

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

SecuriteInfo.com.BackDoor.Generic16.BZTQ.UNOFFICIAL

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=672a010f8d23d9049133b067

Tags:

ransomware downloader dropper

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Creating a process from a recently created file

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

Connection attempt to an infection source

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd crypto evasive exploit explorer fingerprint fingerprint keylogger lolbin microsoft_visual_cc packed rat remcos rijndael windows

Link:

https://www.filescan.io/uploads/672a01109a1d13ab99cc7ba5/reports/75a4f71c-d589-49ab-a0ef-ac1d96bdd59d/overview

Verdict:

Malicious

Labled as:

Remcos.Generic

Link:

https://www.hybrid-analysis.com/sample/7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c

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/b50a67ab-6bef-4de0-9191-88d270fd0db1

Result

Threat name:

Remcos

Detection:

malicious

Classification:

rans.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1549219

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped 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

Creates autostart registry keys with suspicious names

Delayed program exit found

Detected Remcos RAT

Found malware configuration

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

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:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c

Detection:

remcos

Link:

https://mwdb.cert.pl/sample/7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c/

Threat name:

Win32.Backdoor.Remcos

Status:

Malicious

First seen:

2024-11-05 11:27:06 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

25 of 38 (65.79%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=pkopdmt7dewe4znscw2kcjx2ysvi2nbzpubak2f2iwikcvicz6oa._file

Verdict:

malicious

Label(s):

remcos

RemcosRAT

82f69d218791526f3724c1e6fcf7e73272182067c80f4d037557289863a241aa

RemcosRAT

error

RemcosRAT

Result

Malware family:

remcos

Score:

10/10

Tags:

family:remcos botnet:yavakosa discovery persistence rat

Link:

https://tria.ge/reports/241105-nkejms1cqp/

Behaviour

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Adds Run key to start application

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Remcos

Remcos family

Malware Config

C2 Extraction:

198.23.227.212:32583

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/df2b6d64-efc5-4a4e-85e2-e79a18370d9c

Unpacked files

SH256 hash:

7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c

MD5 hash:

d457d91b513ac2e3a4b539c28537da71

SHA1 hash:

9fd2aca60e95212de7ccc546dd82729b5d050f02

Detections:

Remcos

win_remcos_auto

win_remcos_w0

Link:

https://www.unpac.me/results/9f6e4d26-4264-4685-bdd2-c1cb359a334a/

Parent samples :

7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c
034b31656266ad9f80490a4fc983ac53bb3224ac88084069080ee2ba0a91fc20
8038ff6a41673eb151cdb7f03872c741dc762834c856d70030cd54af744e36a4
0e184edac45ddeaf7ca4681b65e7b4accafb6705032faf6d2f6a61d2ef6d1ded
ed1416c90a49177106cbea5b7551756e06fee46d77fde4879b8735ec56dd54b4
48773abdad4ef3e8339d4ed2aa02f9d41611e02aefd9e93b0833a2ab99a1619f
4d8f242a1d64b3b41748d2bd56ee6f7119434dedcdf793a83cea95fb31d13347

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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

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_CMSTPCOM Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

Rule name:	pe_detect_tls_callbacks Create hunting rule

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

Rule name:	REMCOS_RAT_variants Create hunting rule

Rule name:	Remcos_unpacked_PulseIntel Create hunting rule
Author:	PulseIntel
Description:	Remcos Payload

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.

Malspam

RemcosRAT

exe 7a9cf1b27f192c4e65b215b4a126fac4aa8d34397d020568ba4590a15502cf9c

(this sample)

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

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::FindFirstVolumeW KERNEL32.DLL::FindNextVolumeW KERNEL32.DLL::LoadLibraryA KERNEL32.DLL::LoadLibraryExW KERNEL32.DLL::GetDriveTypeA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.DLL::AllocConsole KERNEL32.DLL::WriteConsoleW KERNEL32.DLL::ReadConsoleW KERNEL32.DLL::SetConsoleOutputCP KERNEL32.DLL::SetConsoleTextAttribute KERNEL32.DLL::SetStdHandle
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 KERNEL32.DLL::QueryDosDeviceW
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

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