MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80. 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: 9


Intelligence 9 IOCs YARA 20 File information Comments
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SHA256 hash: 525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80
SHA3-384 hash: 3283ce87c9ad9192a6645b180f65c4f04034c8a3fbaf6cb9bbf06fe2566fb48df0c78e1bbad0fc00d84552910e1704df
SHA1 hash: bb367cb49f527446ec0a2990addaf526fbcd117b
MD5 hash: 613032d4a0d89eb3a2311d89293a551d
humanhash: solar-table-burger-maine
File name:ZECH_GROUP_SP_PROJECT_ RFQ_SPECIFICATIONS_65438.JS
Download: download sample
Signature RemcosRAT
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File size:5'165'433 bytes
First seen:2025-12-16 15:40:05 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 98304:rAnoeI7sOBKOwTqL+xTBEllSipVwIiDC7hkAIxsMeJib:rAot75BKOwTWwFSlSipVwtDC7hnRMeJM
Threatray 1'923 similar samples on MalwareBazaar
TLSH T18436E754A7F5219CC6BAC826F52E35C0AE053E6FA0E50C6BB53CB5AF306369D6630C35
Magika javascript
Reporter JAMESWT_WT
Tags:js laboratery-ydns-eu RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
IT IT
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.31320.UNOFFICIAL
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SecuriteInfo.com.PUA.JS.Obfus-2525.UNOFFICIAL
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Verdict:
Clean
Score:
82.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6941326fc97f4a807a3b4652
Tags:
n/a
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80
Verdict:
Malicious
File Type:
js
First seen:
2025-12-11T21:30:00Z UTC
Last seen:
2025-12-17T00:08:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan-Dropper.Script.Generic HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80/results?tab=lookup
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80
Gathering data
Detection:
remcos
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Link:
https://mwdb.cert.pl/sample/525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kjojmdbbtoggy4iiygzq3hzpnys2in2bsmuvea3ic22n7vp5hsaa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80
RemcosRAT
69db3f623fe1895461959fa4396e096c0892ff0fada1783a96274dc9bd0a8305
RemcosRAT
7bd2afc08d989f953c9ba966eba803bf24f413a8e60fdc8ca4d6b6d3706a1d8f
RemcosRAT
b3bb0f051096210a71a558cd6d24f577e5e8b2066a99ffebb8ed5f71d1e9e888
RemcosRAT
e0a69eff836709cbefee1079d647d50d55f558e5f8c7bf18a8056361cd5116f3
RemcosRAT
e8551dd43a0e961e75bfe1ee46bab0c822f181d901da89744e745dc1e66b507c
RemcosRAT
+ 1'913 additional samples on MalwareBazaar
Result
Malware family:
donutloader
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Score:
  10/10
Tags:
family:donutloader collection discovery execution loader
Link:
https://tria.ge/reports/251216-s4c75shr2v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks computer location settings
Executes dropped EXE
Detected Nirsoft tools
NirSoft MailPassView
Detects DonutLoader
DonutLoader
Donutloader family
Malware family:
Remcos
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/525c960c219b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/525c960c219b8c6c7108c1b30d9f2f6e25a43741932952036816b4dfd5fd3c80

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
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Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:CP_Script_Inject_Detector
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
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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
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Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
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Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
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Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:pe_detect_tls_callbacks
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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
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Author:PulseIntel
Description:Remcos Payload
Rule name:Sus_CMD_Powershell_Usage
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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
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
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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
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Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:win_remcos_w0
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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.

Comments