MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9. 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 33 File information Comments
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SHA256 hash: 21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
SHA3-384 hash: 365acc69baca75c5c7224e97f17d46cc6ae844baed1b760feaa620b3bcd4f9ab6299ae4d07dff8473ea07012734a3dd4
SHA1 hash: ca3e925e87dc3bc5bd1878bc9d74cd709d7a9622
MD5 hash: e48ca032affdeea3ee88874ed39c4dcd
humanhash: aspen-blossom-timing-social
File name:RemcosRAT-21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'076'224 bytes
First seen:2025-02-12 15:55:52 UTC
Last seen:2025-02-12 16:42:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:D+wIZTFg2BK8sgD08CwrjYFMIzsBk6tkAfiRN+BU:D+wIZTOBRgDhnY2M6tV6RND
Threatray 4'287 similar samples on MalwareBazaar
TLSH T15D35F1D43B25AB06DDA56B309935DDB443A81CACB400F9E65EDA3F87B8BD3115A0CF06
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon dc9c98d991285458 (17 x GuLoader, 6 x Formbook, 6 x SnakeKeylogger)
Reporter BastianHein
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
464
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
02a113310c4b7d8b1b47afeff0f4df059d212400b29edba2b0e5754dd4748289
Verdict:
Malicious activity
Analysis date:
2025-02-12 13:04:52 UTC
Tags:
arch-exec remcos rat remote
Link:
https://app.any.run/tasks/27bb9c52-2eb8-4a65-95a3-a213db7a54e9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.37.7597.18534.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67acc4a24f5583c4c4d86c62
Tags:
virus lien remo msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a process from a recently created file
Reading critical registry keys
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67acc4a708a59fc7184ac974/reports/1d606484-7996-4046-93c5-9b9142665bfd/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
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/7545796e-34d8-4daf-9319-9140c3e784cc
Result
Threat name:
Remcos, AgentTesla
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1613295
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for dropped file
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
Detected Remcos RAT
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: New RUN Key Pointing to Suspicious Folder
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, 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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1613295 Sample: rjwiMugnkB.exe Startdate: 12/02/2025 Architecture: WINDOWS Score: 100 75 oktoviyanto.ddns.net 2->75 77 smtp.gmail.com 2->77 79 geoplugin.net 2->79 95 Suricata IDS alerts for network traffic 2->95 97 Found malware configuration 2->97 99 Malicious sample detected (through community Yara rule) 2->99 103 16 other signatures 2->103 9 rjwiMugnkB.exe 7 2->9         started        13 cxLZERvGna.exe 5 2->13         started        15 Windows Update.exe 2->15         started        signatures3 101 Uses dynamic DNS services 75->101 process4 file5 59 C:\Users\user\AppData\...\cxLZERvGna.exe, PE32 9->59 dropped 61 C:\Users\...\cxLZERvGna.exe:Zone.Identifier, ASCII 9->61 dropped 63 C:\Users\user\AppData\Local\Temp\tmp161.tmp, XML 9->63 dropped 65 C:\Users\user\AppData\...\rjwiMugnkB.exe.log, ASCII 9->65 dropped 115 Tries to steal Mail credentials (via file registry) 9->115 117 Uses schtasks.exe or at.exe to add and modify task schedules 9->117 119 Adds a directory exclusion to Windows Defender 9->119 17 rjwiMugnkB.exe 2 18 9->17         started        22 powershell.exe 23 9->22         started        24 schtasks.exe 1 9->24         started        121 Multi AV Scanner detection for dropped file 13->121 123 Contains functionalty to change the wallpaper 13->123 125 Contains functionality to steal Chrome passwords or cookies 13->125 133 3 other signatures 13->133 26 cxLZERvGna.exe 13->26         started        28 schtasks.exe 1 13->28         started        30 WMIADAP.exe 13->30         started        127 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->127 129 Tries to steal Mail credentials (via file / registry access) 15->129 131 Tries to harvest and steal ftp login credentials 15->131 135 2 other signatures 15->135 signatures6 process7 dnsIp8 71 103.186.117.61, 49734, 49737, 49738 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 17->71 73 geoplugin.net 178.237.33.50, 49741, 80 ATOM86-ASATOM86NL Netherlands 17->73 55 C:\Users\user\AppData\Local\Temp\dwn.exe, PE32 17->55 dropped 57 C:\ProgramData\remcos\logs.dat, data 17->57 dropped 105 Detected Remcos RAT 17->105 107 Tries to harvest and steal browser information (history, passwords, etc) 17->107 109 Maps a DLL or memory area into another process 17->109 111 Installs a global keyboard hook 17->111 32 dwn.exe 1 9 17->32         started        37 rjwiMugnkB.exe 17->37         started        39 rjwiMugnkB.exe 17->39         started        49 8 other processes 17->49 113 Loading BitLocker PowerShell Module 22->113 41 WmiPrvSE.exe 22->41         started        43 conhost.exe 22->43         started        45 conhost.exe 24->45         started        47 conhost.exe 28->47         started        file9 signatures10 process11 dnsIp12 67 66.102.1.109, 50025, 50026, 50027 GOOGLEUS United States 32->67 69 smtp.gmail.com 74.125.133.108, 49742, 49745, 49753 GOOGLEUS United States 32->69 53 C:\Users\user\AppData\...\Windows Update.exe, PE32 32->53 dropped 81 Antivirus detection for dropped file 32->81 83 Multi AV Scanner detection for dropped file 32->83 85 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 32->85 93 3 other signatures 32->93 87 Tries to steal Instant Messenger accounts or passwords 37->87 89 Tries to steal Mail credentials (via file / registry access) 37->89 91 Tries to harvest and steal browser information (history, passwords, etc) 49->91 51 WerFault.exe 49->51         started        file13 signatures14 process15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-02-11 04:48:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
25 of 37 (67.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eerezqrw2y6f2pl5h6al4n25hqsar55jdmeow2qw24gh3mqra3mq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
remcos
Create hunting rule
Similar samples:
06d30761437ffb30ac9ac077bb3761b5e4c077f3b74f8ed3b7372e104dccf83f
RemcosRAT
3f2491926888db2c9d6c7b1a426ff41e1cd4a13bc922156a814b9fe3032ff809
RemcosRAT
5e95fb52da2144a06a66a593a6f12877108ebcdeb69f8f60ad010831d4fce1eb
RemcosRAT
a1333650518e3e435421e28233c84f8a5a1ca03607c5289a01da3f86e4046565
RemcosRAT
d1b50fc6ce79320a88defef33baf6a51e30845bd13ab2b52f7925ba0b8f527cd
RemcosRAT
error
RemcosRAT
+ 4'277 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:remcos botnet:feb 09 collection discovery execution keylogger persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/250212-tdfe9aykgv/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
AgentTesla
Agenttesla family
Remcos
Remcos family
Malware Config
C2 Extraction:
oktoviyanto.ddns.net:9373
103.186.117.61:9373
https://api.telegram.org/bot5612460560:AAHyXkizBwpknHBFsEt3GDIwhLylabAVwjM/
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5943b2b3-30bf-4a79-a5c6-1093aa1f2fca
Unpacked files
SH256 hash:
21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
MD5 hash:
e48ca032affdeea3ee88874ed39c4dcd
SHA1 hash:
ca3e925e87dc3bc5bd1878bc9d74cd709d7a9622
Link:
https://www.unpac.me/results/2ef0f752-35c0-4c54-a22f-0e24c8434474/
SH256 hash:
1cd9d0d9112033a5b4d906a4b0abe6c4a4bb0aaf21ab0c78f12f2c0c37c042ac
MD5 hash:
2043646e9ce63554826115b04a569f05
SHA1 hash:
27f3eba397a4f2f9ddf94b6d679d2932b49128be
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/2ef0f752-35c0-4c54-a22f-0e24c8434474/
Parent samples :
21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9
b254541038b979c1c21f489e21bc15f594492aff656bc908aa54033bafb05775
SH256 hash:
4218d3f9a633f2167a9902aae4c8291d3e42ddefec4858cb2224a2f740562301
MD5 hash:
f1abcfb7ed3ebd3e0ad68929329356b8
SHA1 hash:
b616868e87ec98c885aa1c6bfbf0194ed0cff1d6
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2ef0f752-35c0-4c54-a22f-0e24c8434474/
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Link:
https://www.unpac.me/results/2ef0f752-35c0-4c54-a22f-0e24c8434474/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/21224cc236d6/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/21224cc236d63c5d3d7d3f80be375d3c2408f7a91b08eb6a16d70c7db21106d9

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: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_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
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:nirsoft_v1
Create hunting rule
Author:RandomMalware
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_imphash
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:TeslaCryptPackedMalware
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.

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

Comments