MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf. 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: 13


Intelligence 13 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf
SHA3-384 hash: fa0c760743568a55f35e176bc2462fdfd03d94724214d6c2390fdb577bd78a701f99c9e8fd1aca73cbda1a8bc3f262fe
SHA1 hash: 035f2a05721b99c4e57dbfff72c0d62b3f9b8044
MD5 hash: 1bf4401d8781547259ced7137f33de65
humanhash: oscar-georgia-massachusetts-south
File name:Quotation.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:823'004 bytes
First seen:2025-10-21 05:12:45 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12288:atKiHLbauJGMBl5vi63lsY8NKR+m6ydKtdrw7KvrqsaRcJBfwjqGJE1u3FxxFxhO:atKir2qRBlNflJs6IwqGmJlmJEeJ7R+
Threatray 53 similar samples on MalwareBazaar
TLSH T144059C3D9DF5B88EE2AC619124F52A1700ECCE839A3215DC9086D876BCDCDE5579A30F
Magika vba
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
SE SE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/33559/
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68f71681ad6ce0f5ad40379f
Tags:
obfuscate xtreme shell
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf
Verdict:
Malicious
File Type:
vbs
First seen:
2025-10-20T23:17:00Z UTC
Last seen:
2025-10-23T02:08:00Z UTC
Hits:
~1000
Detections:
Trojan.JS.SAgent.sb HEUR:Trojan-Downloader.Script.Generic HEUR:Trojan.Script.Generic HEUR:Trojan.PowerShell.Tesre.sb Trojan-Downloader.JS.Cryptoload.sb
Link:
https://opentip.kaspersky.com/cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1798840
Signature
.NET source code contains a sample name check
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates processes via WMI
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell decode and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1798840 Sample: Quotation.vbs Startdate: 21/10/2025 Architecture: WINDOWS Score: 100 32 oobinnnasdfgghjkll.ydns.eu 2->32 36 Suricata IDS alerts for network traffic 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 13 other signatures 2->42 10 wscript.exe 1 2->10         started        signatures3 process4 file5 30 C:\Users\Public\FarmGround.bat, ASCII 10->30 dropped 52 Wscript starts Powershell (via cmd or directly) 10->52 54 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->54 56 Suspicious execution chain found 10->56 58 Creates processes via WMI 10->58 14 cmd.exe 1 10->14         started        signatures6 process7 signatures8 60 Suspicious powershell command line found 14->60 62 Wscript starts Powershell (via cmd or directly) 14->62 17 cmd.exe 1 14->17         started        19 conhost.exe 14->19         started        process9 process10 21 cmd.exe 2 17->21         started        signatures11 44 Suspicious powershell command line found 21->44 46 Wscript starts Powershell (via cmd or directly) 21->46 24 powershell.exe 5 28 21->24         started        28 conhost.exe 21->28         started        process12 dnsIp13 34 oobinnnasdfgghjkll.ydns.eu 103.125.189.101, 2558, 49722 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 24->34 48 Found suspicious powershell code related to unpacking or dynamic code loading 24->48 50 Loading BitLocker PowerShell Module 24->50 signatures14
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf
Verdict:
Malware
YARA:
2 match(es)
Tags:
Base64 Block Contains Base64 Block DeObfuscated PowerShell Scripting.FileSystemObject VBScript
Link:
https://app.malva.re/file/1bf4401d8781547259ced7137f33de65
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf/
Verdict:
Malicious
Threat:
Trojan-Downloader.JS.Cryptoload
Link:
https://tip.neiki.dev/file/cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf
Threat name:
Script-WScript.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-10-21 04:31:41 UTC
File Type:
Text
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zomj4t67trfsfyj7huyi53msoeneihudepii6ok7igtw4a5jpxhq._file
Verdict:
malicious
Label(s):
donut_injector
Create hunting rule
remcos
Create hunting rule
Similar samples:
01cb5a170ccb486184841f7adf57026bf18fdd25d71824ebe40161256a3f1f9b
RemcosRAT
1b4a27465a2fc0ec65d36590d7a4c7b94dabb9152e2a8fa9e6aa83a9d7e340b0
RemcosRAT
41efb861dbd52669d69c3fd0ae3cabbf7c993601ff3e88649810487b3e5b997b
RemcosRAT
55f4b41cf0f7303afb52d47652f2f8cf170756c40357407bada780ed7c3e7062
RemcosRAT
65d68fb0ca9330c553de3d977dfbc1203c8ff14cc1f59fc6a2ab02010e41f796
RemcosRAT
80b8b696061e9f3f94c9889b0c51189ea3941a72432627e799fa2d65f4bf8f6d
RemcosRAT
b42256a0e9632bda5338a23bbbb8a750f204b343d6f561d3412baef66077739f
RemcosRAT
d4eaeb5ac63c282b8c187aee3147d27976ccb08205c1adfb6b441a15d6a0ba34
RemcosRAT
error
RemcosRAT
f75bc578269b2286c78a711a0cc932ba6b57e1e2642b883847400c44c8bb57f5
RemcosRAT
+ 43 additional samples on MalwareBazaar
Result
Malware family:
donutloader
Create hunting rule
Score:
  10/10
Tags:
family:donutloader discovery execution loader
Link:
https://tria.ge/reports/251021-fwnyfsfs2h/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Command and Scripting Interpreter: PowerShell
Badlisted process makes network request
Detects DonutLoader
DonutLoader
Donutloader family
Process spawned unexpected child process
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/cb989e4fdf9c4b22e13f3d308eed92711a441e8323d08f395f41a76e03a97dcf

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: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: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_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:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings
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.

Cape
Cape
https://www.capesandbox.com/analysis/33559/

Comments