MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b. 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: 17


Intelligence 17 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b
SHA3-384 hash: 20686b39d09be86f6d35bd202a4817b6cab4ae828acee05ee86c629c69e7c961bc29a6d0b577e71fc019d13d98589eb3
SHA1 hash: 59ee382d53c7d1f9813cba4e0a73eda6e31fb469
MD5 hash: 8737ed2f6f0a5eee2ddd84fcf020f041
humanhash: mars-quiet-zulu-yellow
File name:Eoyrkbpsiqusdzd.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'545'216 bytes
First seen:2025-09-16 09:03:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 63a7884deadb0f34accabcb21cf8585a (2 x RemcosRAT, 1 x Loki)
ssdeep 24576:CqlGVZjzBFArK+QJ8GB00EkhhLWR4YR9ibVdsG0aY8QZcFHv90cpjluh3t5:C7F8GB0BkhhLcziMhaYfZczTpZuhD
TLSH T11C65E03676A04873C0267938CCCBD3945529BDF03E24AD6A3ADC6C8C5F397DA253A15B
TrID 95.7% (.EXE) Win32 Executable Borland Delphi 7 (664796/42/58)
1.5% (.EXE) Win64 Executable (generic) (10522/11/4)
0.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.6% (.EXE) Win32 Executable (generic) (4504/4/1)
0.2% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
115
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Eoyrkbpsiqusdzd.exe
Verdict:
Malicious activity
Analysis date:
2025-09-16 09:04:24 UTC
Tags:
delphi dbatloader loader auto-sch rat remcos remote evasion stealer mpress
Link:
https://app.any.run/tasks/13107383-68f3-42cf-90ed-283487d34a61

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/27706/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68c92826d49ea3f1e4b65a51
Tags:
emotet blic sage remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Connection attempt to an infection source
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %temp% directory
Reading critical registry keys
Launching a service
Sending an HTTP GET request
Moving of the original file
Query of malicious DNS domain
Sending a TCP request to an infection source
Stealing user critical data
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug borland_delphi fingerprint keylogger overlay packed zero
Link:
https://www.filescan.io/uploads/68c9282e0d1238ff0aaccd0a/reports/caf046d6-6703-47f1-b127-8811e77eefb2/overview
Verdict:
Malicious
Labled as:
Zusy.Generic
Link:
https://www.hybrid-analysis.com/sample/8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-16T04:41:00Z UTC
Last seen:
2025-09-16T04:41:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e74717ae-50d7-4f5b-8310-470b56fd43b8
Result
Threat name:
DBatLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1778371
Signature
Allocates many large memory junks
Allocates memory in foreign processes
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to determine the online IP of the system
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
Early bird code injection technique detected
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
Queues an APC in another process (thread injection)
Sigma detected: DLL Search Order Hijackig Via Additional Space in Path
Sigma detected: Execution from Suspicious Folder
Sigma detected: Files With System Process Name In Unsuspected Locations
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 schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected DBatLoader
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: 1778371 Sample: Eoyrkbpsiqusdzd.exe Startdate: 16/09/2025 Architecture: WINDOWS Score: 100 47 chukwunweikefrankokiteamaekeibeku.ydns.eu 2->47 49 api.ipify.org 2->49 51 api.findip.net 2->51 59 Suricata IDS alerts for network traffic 2->59 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 13 other signatures 2->65 8 Eoyrkbpsiqusdzd.exe 6 2->8         started        11 rundll32.exe 3 2->11         started        signatures3 process4 signatures5 67 Early bird code injection technique detected 8->67 69 Uses schtasks.exe or at.exe to add and modify task schedules 8->69 71 Allocates memory in foreign processes 8->71 73 3 other signatures 8->73 13 SndVol.exe 4 16 8->13         started        18 cmd.exe 3 8->18         started        20 cmd.exe 1 8->20         started        22 schtasks.exe 1 8->22         started        24 Eoyrkbpsi.exe 11->24         started        process6 dnsIp7 53 api.ipify.org 104.26.12.205, 443, 49692 CLOUDFLARENETUS United States 13->53 55 api.findip.net 172.67.214.3, 443, 49693 CLOUDFLARENETUS United States 13->55 57 chukwunweikefrankokiteamaekeibeku.ydns.eu 80.76.49.120, 20908, 49690, 49691 CLOUDCOMPUTINGDE Bulgaria 13->57 41 C:\Users\user\AppData\Local\Temp\TH6CBE.tmp, MS-DOS 13->41 dropped 43 C:\Users\user\AppData\Local\Temp\TH6C9E.tmp, MS-DOS 13->43 dropped 45 C:\Users\user\AppData\Local\Temp\TH6C7E.tmp, PE32 13->45 dropped 91 Contains functionality to bypass UAC (CMSTPLUA) 13->91 93 Contains functionality to determine the online IP of the system 13->93 95 Contains functionalty to change the wallpaper 13->95 103 6 other signatures 13->103 26 RmClient.exe 2 13->26         started        29 RmClient.exe 1 13->29         started        31 RmClient.exe 1 13->31         started        33 conhost.exe 18->33         started        35 conhost.exe 20->35         started        37 conhost.exe 22->37         started        97 Early bird code injection technique detected 24->97 99 Allocates memory in foreign processes 24->99 101 Allocates many large memory junks 24->101 39 colorcpl.exe 24->39         started        file8 signatures9 process10 signatures11 75 Tries to steal Mail credentials (via file registry) 26->75 77 Tries to harvest and steal browser information (history, passwords, etc) 26->77 79 Tries to steal Instant Messenger accounts or passwords 29->79 81 Tries to steal Mail credentials (via file / registry access) 29->81 83 Contains functionality to bypass UAC (CMSTPLUA) 39->83 85 Contains functionality to determine the online IP of the system 39->85 87 Contains functionalty to change the wallpaper 39->87 89 2 other signatures 39->89
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/8737ed2f6f0a5eee2ddd84fcf020f041
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b/
Threat name:
Win32.Trojan.DBatLoader
Create hunting rule
Status:
Malicious
First seen:
2025-09-16 08:36:40 UTC
File Type:
PE (Exe)
Extracted files:
42
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rrkiuybfsxu66a7ovobfpudvqgt2nasoicqsd4rnnioxqbrbsnvq._file
Verdict:
malicious
Label(s):
dbatloader
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:modiloader collection discovery execution persistence trojan
Link:
https://tria.ge/reports/250916-k1s57attas/
Behaviour
Runs ping.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Looks up external IP address via web service
Detected Nirsoft tools
ModiLoader Second Stage
NirSoft MailPassView
ModiLoader, DBatLoader
Modiloader family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2870debf-57f6-48c4-8ef1-8980e5a5893b
Unpacked files
SH256 hash:
8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b
MD5 hash:
8737ed2f6f0a5eee2ddd84fcf020f041
SHA1 hash:
59ee382d53c7d1f9813cba4e0a73eda6e31fb469
Link:
https://www.unpac.me/results/cc4a91ca-74ab-41be-9f0d-4d011957a903/
Malware family:
WebBrowserPassView
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8c548a602595/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/8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b

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:Borland
Create hunting rule
Author:malware-lu
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
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:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_
Create hunting rule
Author:Michelle Khalil
Description:This rule detects unpacked remcos malware samples.
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Remcos_unpacked_PulseIntel
Create hunting rule
Author:PulseIntel
Description:Remcos Payload
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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

Executable exe 8c548a602595e9ef03eeab8257d07581a7a6824e40a121f22d6a1d780621936b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/27706/

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