MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b. 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: 21


Intelligence 21 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b
SHA3-384 hash: 48af9144ec4f7def74e7cdfd05e8dcf1b2af17315b319a154553e588f7338d33f0276ff533d9ec945e81bec9b8010c45
SHA1 hash: b6cb27a9d1f77a0653db926947fb0a7b01b903e2
MD5 hash: 6244ae42600c7d52a8200ac92c9f9f34
humanhash: neptune-mirror-hawaii-eight
File name:1748501750f4f751ce7af377e18e3cee19147c61b17c328775bb6e35adb2f73c8418cc1ee8288.dat-decoded
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:499'200 bytes
First seen:2025-05-29 06:55:56 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1dac0fb7dad849409daf9e23353df461 (32 x RemcosRAT)
ssdeep 12288:YvSPwdNnNZGA3/hvESbvqCqYH2v595OuVIsPZ3hxL:YqPONnNZ33/VY42hnOmZxx
TLSH T18DB4BF01B6E2C1B2D57654300C26E776DEBCFD202835997B63D60D57FD30190AB3AAB6
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
dhash icon c4d48eaa8ad4d4f8 (1'000 x RemcosRAT, 1 x Worm.Ramnit, 1 x Vjw0rm)
Reporter abuse_ch
Tags:base64-decoded exe RemcosRAT


Avatar
abuse_ch
Malware dropped as base64 encoded payload

Intelligence

File Origin
# of uploads :
1
# of downloads :
506
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
1748501750f4f751ce7af377e18e3cee19147c61b17c328775bb6e35adb2f73c8418cc1ee8288.dat-decoded.exe
Verdict:
Malicious activity
Analysis date:
2025-05-29 07:01:11 UTC
Tags:
remcos rat evasion
Link:
https://app.any.run/tasks/499dc328-6ae7-4b3f-99ed-dd88095f30a2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/6153/
Detection(s):
Win.Trojan.Remcos-9841897-0
Create hunting rule

Win.Trojan.Remcos-10002580-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=683805d5668438e362e7f76a
Tags:
downloader backdoor dropper
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Connection attempt
Verdict:
Malicious
Labled as:
Dacic.A9349469.A.Generic
Link:
https://www.hybrid-analysis.com/sample/491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/72d6ca44-dd34-4807-a9ac-74f0fd21aad4
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1701314
Signature
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
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1701314 Sample: 1748501750f4f751ce7af377e18... Startdate: 29/05/2025 Architecture: WINDOWS Score: 100 27 wealthismine.duckdns.org 2->27 29 Cashouttrades2025.duckdns.org 2->29 31 5 other IPs or domains 2->31 35 Suricata IDS alerts for network traffic 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 43 9 other signatures 2->43 7 1748501750f4f751ce7af377e18e3cee19147c61b17c328775bb6e35adb2f73c8418cc1ee8288.dat-decoded.exe 4 3 2->7         started        signatures3 41 Uses dynamic DNS services 29->41 process4 dnsIp5 33 wealthismine.duckdns.org 172.94.9.170, 3980, 49692, 49696 VOXILITYGB United States 7->33 21 C:\Users\user\AppData\Local\Temp\THF20D.tmp, MS-DOS 7->21 dropped 23 C:\Users\user\AppData\Local\Temp\TH8A24.tmp, MS-DOS 7->23 dropped 25 C:\Users\user\AppData\Local\Temp\TH11BD.tmp, PE32 7->25 dropped 45 Contains functionality to bypass UAC (CMSTPLUA) 7->45 47 Contains functionalty to change the wallpaper 7->47 49 Contains functionality to steal Chrome passwords or cookies 7->49 51 4 other signatures 7->51 12 svchost.exe 1 7->12         started        15 svchost.exe 1 7->15         started        17 svchost.exe 2 7->17         started        19 svchost.exe 7->19         started        file6 signatures7 process8 signatures9 53 Tries to steal Instant Messenger accounts or passwords 12->53 55 Tries to steal Mail credentials (via file / registry access) 12->55 57 Tries to harvest and steal browser information (history, passwords, etc) 15->57 59 Tries to steal Mail credentials (via file registry) 19->59
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b/
Verdict:
Malicious
Link:
https://tip.neiki.dev/file/491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-05-29 06:56:15 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jemwb67uup2pbbnrummmrdl7heqicufs7ui5cji36ji6setjdifq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:backup collection discovery
Link:
https://tria.ge/reports/250529-hqg9tshk8y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Malware Config
C2 Extraction:
wealthybillionaireman007.duckdns.org:3980
Cashouttrades2025.duckdns.org:3980
billionairegangs2025.freemyip.com:3980
wealthymindset007.freemyip.com:3980
wealthymanbanks007.kozow.com:3980
wealthybankinc2025.ddns.net:3980
wealthismine.duckdns.org:3980
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/c87d697f-ccf3-44ae-ba51-066921699407
Unpacked files
SH256 hash:
491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b
MD5 hash:
6244ae42600c7d52a8200ac92c9f9f34
SHA1 hash:
b6cb27a9d1f77a0653db926947fb0a7b01b903e2
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
Link:
https://www.unpac.me/results/7590b20f-d467-4452-8378-3b465e3f7376/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/491960fbf4a3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b

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:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
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.

f4f751ce7af377e18e3cee19147c61b17c328775bb6e35adb2f73c8418cc1ee8

RemcosRAT

Executable exe 491960fbf4a3f4f085b1a318c88d7f39208150b2fd11d1251bf251e912691a0b

(this sample)

  
Dropped by
SHA256 f4f751ce7af377e18e3cee19147c61b17c328775bb6e35adb2f73c8418cc1ee8
  
Dropped by
MD5 e5caea7de90b04184d864165669c5ec9
  
URLhaus
https://urlhaus.abuse.ch/url/3552966/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/6153/

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
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdipGetImageEncoders
gdiplus.dll::GdipGetImageEncodersSize
gdiplus.dll::GdipAlloc
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringA
WINMM.dll::mciSendStringW
WINMM.dll::PlaySoundW
WINMM.dll::waveInAddBuffer
WINMM.dll::waveInClose
WINMM.dll::waveInOpen
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::GetTokenInformation
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExA
SHELL32.dll::ShellExecuteW
URL_MONIKERS_APICan Download & Execute componentsurlmon.dll::URLDownloadToFileW
urlmon.dll::URLOpenBlockingStreamW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::CreateProcessA
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::WriteProcessMemory
KERNEL32.dll::CloseHandle
WININET.dll::InternetCloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindFirstVolumeW
KERNEL32.dll::FindNextVolumeW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetConsoleOutputCP
KERNEL32.dll::SetConsoleTextAttribute
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileA
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LookupPrivilegeValueA
KERNEL32.dll::QueryDosDeviceW
WIN_CRYPT_APIUses Windows Crypt APIADVAPI32.dll::CryptAcquireContextA
ADVAPI32.dll::CryptGenRandom
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegCreateKeyW
ADVAPI32.dll::RegCreateKeyA
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegOpenKeyExW
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::ChangeServiceConfigW
ADVAPI32.dll::ControlService
ADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::OpenSCManagerA
ADVAPI32.dll::OpenServiceW
ADVAPI32.dll::QueryServiceConfigW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::OpenClipboard
USER32.dll::CreateWindowExA

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