MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4. 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: 19


Intelligence 19 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4
SHA3-384 hash: e00e79ec38921c843b0ea97cf53bcde7d48ac4ec896beb89f71e48358f4b3ed84eaae0b3715985fe36cb8763ec07671b
SHA1 hash: 198c13ae640ad4ad235fa14c689ad4b1962651c7
MD5 hash: 3d8389b6b4b7f459e747220f522031ca
humanhash: south-purple-three-equal
File name:1740558663fba8aff4c7c9187527d0292224380fe565dc48ebdc9038b1a59a986e6eb756e5339.dat-decoded
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:498'688 bytes
First seen:2025-02-26 08:31:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 41e05d591d7d93bdd5bc6d5da04da74b (52 x RemcosRAT, 1 x Expiro)
ssdeep 12288:H200OFp+G0imvHn3Cp6qyBP+YdsvZGjo:W0Zp+ViehBWY0Zk
Threatray 1'598 similar samples on MalwareBazaar
TLSH T139B4BF01B9E2C172D57654300D2AE776DEBCBD2028358D7BB3D60D57FE30190AA39AB6
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 :
484
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
1740558663fba8aff4c7c9187527d0292224380fe565dc48ebdc9038b1a59a986e6eb756e5339.dat-decoded
Verdict:
Malicious activity
Analysis date:
2025-02-26 09:19:22 UTC
Tags:
rat remcos stealer mpress
Link:
https://app.any.run/tasks/9ba6b17b-914e-4640-9d5b-456bca6e73af

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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=67bed1cea0fd713c335ce85c
Tags:
ransomware dropper keylog
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Launching a process
Reading critical registry keys
Creating a file in the %temp% directory
Сreating synchronization primitives
Setting a keyboard event handler
Connection attempt to an infection source
Query of malicious DNS domain
Sending a TCP request to an infection source
Stealing user critical data
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd config-extracted crypto evasive exploit explorer fingerprint fingerprint keylogger lolbin microsoft_visual_cc obfuscated packed rat remcos remcos windows
Link:
https://www.filescan.io/uploads/67bed1573afc3763bec76055/reports/b12b6198-c233-4c78-a10e-403aab3a1281/overview
Verdict:
Malicious
Labled as:
Dacic.A9349469.A.Generic
Link:
https://www.hybrid-analysis.com/sample/4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4
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/95bdceec-482b-4fcb-9e25-65446a3c0620
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/1624426
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
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 malware configuration
Installs a global keyboard hook
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 submitted file
Sample uses process hollowing technique
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
Writes to foreign memory regions
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: 1624426 Sample: 1740558663fba8aff4c7c918752... Startdate: 26/02/2025 Architecture: WINDOWS Score: 100 21 hftook7lmoutsg1.duckdns.org 2->21 23 geoplugin.net 2->23 29 Suricata IDS alerts for network traffic 2->29 31 Found malware configuration 2->31 33 Malicious sample detected (through community Yara rule) 2->33 37 7 other signatures 2->37 7 1740558663fba8aff4c7c9187527d0292224380fe565dc48ebdc9038b1a59a986e6eb756e5339.dat-decoded.exe 4 14 2->7         started        signatures3 35 Uses dynamic DNS services 21->35 process4 dnsIp5 25 hftook7lmoutsg1.duckdns.org 45.74.46.35, 3980, 49699, 49700 M247GB United States 7->25 27 geoplugin.net 178.237.33.50, 49701, 80 ATOM86-ASATOM86NL Netherlands 7->27 19 C:\Users\user\AppData\Roaming\jastisot.dat, data 7->19 dropped 39 Contains functionality to bypass UAC (CMSTPLUA) 7->39 41 Contains functionalty to change the wallpaper 7->41 43 Contains functionality to steal Chrome passwords or cookies 7->43 45 7 other signatures 7->45 12 recover.exe 2 7->12         started        15 recover.exe 1 7->15         started        17 recover.exe 1 7->17         started        file6 signatures7 process8 signatures9 47 Tries to steal Mail credentials (via file registry) 12->47 49 Tries to harvest and steal browser information (history, passwords, etc) 12->49 51 Tries to steal Instant Messenger accounts or passwords 15->51 53 Tries to steal Mail credentials (via file / registry access) 17->53
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-02-26 08:31:18 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
30 of 38 (78.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jt6ijvdaoqkc7izai532ygqmxv7kcvp4v4dtsoen6xijrk7y272a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
nirsoft
Create hunting rule
Similar samples:
1d6a540ec5c26039979eb96d9c53b949694d5e95b7bedd7f941f49336c06534e
RemcosRAT
338f83f2398cb432b9959231ad7df184757314feb99f0116acbda87d583f849b
RemcosRAT
3d00bc1dd8a3a44661a7a4ed462d401b872d06d7111713d795ffc6327c82ad8d
RemcosRAT
4414b2abc34b5f274c0941719052e1ae8b5ce354f8dc6e3bea4351f23139435d
RemcosRAT
ad4e305243eea4eb48308ce4bccd6b999ed93f9810a82236987187fda9e12de1
RemcosRAT
ae7232b1023cd115b8b67ff255be4a9c333f944ce1aaeea7a6dfd6a2e0772366
RemcosRAT
db65ec3e55dbc789c0a2edeefe3ff5fb294394abb884b0ccfac5aabb47808c7f
RemcosRAT
error
RemcosRAT
+ 1'588 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:new collection discovery rat
Link:
https://tria.ge/reports/250226-ket6cs1rw6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Remcos
Remcos family
Malware Config
C2 Extraction:
hftook7lmoutsg1.duckdns.org:3980
hftook7lmoutsg1.duckdns.org:3981
hftook7lmoutsg2.duckdns.org:3980
hftook7lmoutsg3.duckdns.org:3980
hftook7lmoutsg4.duckdns.org:3980
hftook7lmoutsg5.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/f5f0bf80-f6aa-48b2-ba42-1f4cfe722321
Unpacked files
SH256 hash:
4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4
MD5 hash:
3d8389b6b4b7f459e747220f522031ca
SHA1 hash:
198c13ae640ad4ad235fa14c689ad4b1962651c7
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
Link:
https://www.unpac.me/results/cdbb5c38-94ca-49d5-9bb8-28a47016160a/
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/4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4

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.

fba8aff4c7c9187527d0292224380fe565dc48ebdc9038b1a59a986e6eb756e5

RemcosRAT

Executable exe 4cfc84d46074142fa3204777ac1a0cbd7ea155fcaf0739388df5d098abf8d7f4

(this sample)

  
Dropped by
SHA256 fba8aff4c7c9187527d0292224380fe565dc48ebdc9038b1a59a986e6eb756e5
  
Dropped by
MD5 a4d9b668e685620c5027379abd78fcca
  
URLhaus
https://urlhaus.abuse.ch/url/3452852/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3452853/

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::GdipGetImageEncodersSize
gdiplus.dll::GdipGetImageEncoders
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::DeleteFileW
KERNEL32.dll::DeleteFileA
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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