MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5. 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


CastleRAT


Vendor detections: 10


Intelligence 10 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5
SHA3-384 hash: d0c8e116c6f2c9f1920e0438a42c336e1186ab25649a34828f51d1bec0da31c6233b73e386f57e9d99617c38a9673133
SHA1 hash: b399a73bab5021314ae237081e06728fa954d506
MD5 hash: c9f6436b2f20d4061a98fae16f2f2821
humanhash: whiskey-beer-mobile-aspen
File name:cryptbase.dll
Download: download sample
Signature CastleRAT
Create hunting rule
File size:2'312'704 bytes
First seen:2026-01-29 08:58:22 UTC
Last seen:2026-01-29 08:59:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f909a3ddd429fb8fa19b448b75274924 (1 x CastleRAT)
ssdeep 49152:lv7Jl7eRxPEYLrgF4KhUqF4ibh8MCMJU5zwzxArHi0iF6q4:ZH7+ECtO8MfEzYsCnT4
Threatray 7 similar samples on MalwareBazaar
TLSH T1A2B53B0A6B3B4A9AD510C4BE92771263C599BD0CD028F9798DC08B457F96F60D27E3EC
TrID 44.4% (.EXE) Win64 Executable (generic) (10522/11/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter abuse_ch
Tags:castlerat de-pumped exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
123
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
cryptbase.dll
Verdict:
No threats detected
Analysis date:
2026-01-29 08:59:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8cacb71d-f2ee-4e86-9ce0-d2f997395c33

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=697b213c6fa3eed165301e00
Tags:
n/a
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/697b2134c943f4f7221767d7/reports/68eaf764-055a-48da-b8ec-6db2d3ae2a87/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5
Verdict:
Malicious
File Type:
dll x64
First seen:
2026-01-29T11:45:00Z UTC
Last seen:
2026-01-29T21:11:00Z UTC
Hits:
~10
Detections:
Trojan.Win64.Agent.smfksl
Link:
https://opentip.kaspersky.com/29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5/results?tab=lookup
Malware family:
Egairtigado
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/34685605-3449-4c89-a27f-d2107f54bd02
Result
Threat name:
CastleRAT
Create hunting rule
Detection:
malicious
Classification:
spre.troj.expl.evad.spyw
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1859619
Signature
Hides threads from debuggers
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Spreads via windows shares (copies files to share folders)
Suricata IDS alerts for network traffic
Unusual module load detection (module proxying)
Yara detected CastleRAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1859619 Sample: cryptbase.dll.exe Startdate: 29/01/2026 Architecture: WINDOWS Score: 96 48 kakapupuneww.com 2->48 50 www.ip-api.com 2->50 52 5 other IPs or domains 2->52 62 Suricata IDS alerts for network traffic 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Multi AV Scanner detection for submitted file 2->66 68 3 other signatures 2->68 9 loaddll64.exe 64 2->9         started        signatures3 process4 signatures5 74 Spreads via windows shares (copies files to share folders) 9->74 76 Hides threads from debuggers 9->76 78 Unusual module load detection (module proxying) 9->78 12 loaddll64.exe 9->12         started        16 cmd.exe 1 9->16         started        18 rundll32.exe 63 9->18         started        20 14 other processes 9->20 process6 dnsIp7 54 kakapupuneww.com 91.215.85.119, 49706, 49708, 49709 PINDC-ASRU Russian Federation 12->54 56 steamcommunity.com 23.58.233.209, 443, 49702, 49705 AKAMAI-ASUS United States 12->56 60 2 other IPs or domains 12->60 84 Spreads via windows shares (copies files to share folders) 12->84 86 Hides threads from debuggers 12->86 22 cmd.exe 12->22         started        24 rundll32.exe 12->24         started        27 rundll32.exe 12->27         started        29 rundll32.exe 12->29         started        31 rundll32.exe 63 16->31         started        33 WerFault.exe 20 16 18->33         started        35 WerFault.exe 2 18->35         started        58 www.ip-api.com 208.95.112.1, 49693, 49696, 49697 TUT-ASUS United States 20->58 37 WerFault.exe 16 20->37         started        39 4 other processes 20->39 signatures8 process9 signatures10 41 rundll32.exe 22->41         started        70 Spreads via windows shares (copies files to share folders) 31->70 72 Hides threads from debuggers 31->72 44 WerFault.exe 16 31->44         started        46 WerFault.exe 2 31->46         started        process11 signatures12 80 Spreads via windows shares (copies files to share folders) 41->80 82 Hides threads from debuggers 41->82
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5/
Verdict:
Clean
Link:
https://tip.neiki.dev/file/29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fgig7yjdtqufg2ycqgwpmfiewanm2ebkepdzefcv6tbuxc34m62q._file
Verdict:
suspicious
Label(s):
shanyapacker
Create hunting rule
Similar samples:
29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5
CastleRAT
678475ff1d9efd14bed83fd069a3366ec29e7a42e45f43ff718b422435d9ddb6
CastleRAT
error
CastleRAT
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/260129-kxetdsb17g/
Behaviour
Suspicious use of NtSetInformationThreadHideFromDebugger
Unpacked files
SH256 hash:
29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5
MD5 hash:
c9f6436b2f20d4061a98fae16f2f2821
SHA1 hash:
b399a73bab5021314ae237081e06728fa954d506
Link:
https://www.unpac.me/results/859b7ea0-cd19-4509-bd86-88a10eb43f0d/
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/29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5

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: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:DebuggerCheck__QueryInfo
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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
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:Macos_Infostealer_Wallets_8e469ea0
Create hunting rule
Author:Elastic Security
Rule name:NightshadeC2
Create hunting rule
Author:YungBinary
Description:NightshadeC2 AKA CastleRAT - https://x.com/YungBinary/status/1963751038340534482
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

CastleRAT

zip cd98020335542711e7520a2ed134aaa9ca38cc4d729f743a67190cdaabe49ecc

CastleRAT

Executable exe 29906fe1239c28536b0281acf61504b01acd102a23c7921455f4c34b8b7c67b5

(this sample)

  
Dropped by
MD5 e8786eb5422d0ae3694b7e0b85575631
  
Dropped by
SHA256 cd98020335542711e7520a2ed134aaa9ca38cc4d729f743a67190cdaabe49ecc
Cape
Cape
https://www.capesandbox.com/analysis/50630/
  
URLhaus
https://urlhaus.abuse.ch/url/3765491/
  
Delivery method
Distributed via web download

Comments