MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b. 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


OrcusRAT


Vendor detections: 11


Intelligence 11 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b
SHA3-384 hash: 909b01e2e1e80b65d63a60aa5d00e940abdab8f62aa54afaf8023db4db0f29a8c5951715e78812dafe9d98a22a86d3f3
SHA1 hash: 08be8af3cc21bcbce993e8a79cb97edac14eb15c
MD5 hash: 95357cf738a5d40e9388c8a2166816b1
humanhash: cat-fruit-spaghetti-burger
File name:task.dll
Download: download sample
Signature OrcusRAT
Create hunting rule
File size:1'129'592 bytes
First seen:2026-02-12 09:19:52 UTC
Last seen:2026-02-12 10:25:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c65ed3a99850b1c3dea70f50ea322588 (6 x OrcusRAT)
ssdeep 24576:8ySDT7g4FwxPPATyiq7hd7xNOTMRyqUn9Ci1:wT1+aTS/7TIqUn9X1
Threatray 12 similar samples on MalwareBazaar
TLSH T164359E2DADA900BAD077D039CA930547FBB278222720AEDF1391035D5E67BF57A39319
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter abuse_ch
Tags:dll exe OrcusRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
97
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
orcus
Create hunting rule
ID:
1
File name:
task.dll
Verdict:
Malicious activity
Analysis date:
2026-02-12 09:35:27 UTC
Tags:
etherhiding rat orcus evasion loader arch-doc donutloader
Link:
https://app.any.run/tasks/16ee3190-9324-4fff-9efb-aada5254bd40

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/53104/
Detection(s):
SecuriteInfo.com.Win64.MalwareX-gen.44625276.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=698d9b71edd93271034635e5
Tags:
ransomware injection obfusc
Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending a custom TCP request
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b
Result
Gathering data
Verdict:
Malicious
File Type:
dll x64
First seen:
2026-02-11T23:47:00Z UTC
Last seen:
2026-02-12T00:16:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/9af6428f-f361-4fa2-9c74-1bb9dd2985e3
Result
Threat name:
Orcus
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1868271
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Benign windows process drops PE files
Changes memory attributes in foreign processes to executable or writable
Creates a thread in another existing process (thread injection)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sets debug register (to hijack the execution of another thread)
Sigma detected: RunDLL32 Spawning Explorer
Sigma detected: Suspect Svchost Activity
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Unusual module load detection (module proxying)
Writes to foreign memory regions
Yara detected Orcus RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1868271 Sample: task.dll.exe Startdate: 12/02/2026 Architecture: WINDOWS Score: 100 78 polygon-rpc.com 2->78 80 ip-api.com 2->80 82 2 other IPs or domains 2->82 106 Suricata IDS alerts for network traffic 2->106 108 Malicious sample detected (through community Yara rule) 2->108 110 Antivirus detection for URL or domain 2->110 112 7 other signatures 2->112 13 loaddll64.exe 1 2->13         started        signatures3 process4 process5 15 cmd.exe 1 13->15         started        17 rundll32.exe 1 13->17         started        20 rundll32.exe 13->20         started        22 conhost.exe 13->22         started        signatures6 24 rundll32.exe 15->24         started        90 Changes memory attributes in foreign processes to executable or writable 17->90 92 Injects code into the Windows Explorer (explorer.exe) 17->92 94 Writes to foreign memory regions 17->94 96 3 other signatures 17->96 process7 signatures8 114 Changes memory attributes in foreign processes to executable or writable 24->114 116 Injects code into the Windows Explorer (explorer.exe) 24->116 118 Writes to foreign memory regions 24->118 120 3 other signatures 24->120 27 explorer.exe 45 10 24->27 injected process9 dnsIp10 84 31.172.80.212, 443, 49699, 49701 DE-FIRSTCOLOwwwfirst-colonetDE Germany 27->84 86 polygon-rpc.com 208.65.176.248, 443, 49698, 49700 SHOREHAMTELUS United States 27->86 88 204.79.197.203, 443 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 27->88 70 4f47022b-0db3-4c58-acb2-9c5454107a91.dll, PE32+ 27->70 dropped 130 System process connects to network (likely due to code injection or exploit) 27->130 132 Benign windows process drops PE files 27->132 134 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 27->134 136 3 other signatures 27->136 32 svchost.exe 1 12 27->32         started        37 svchost.exe 11 27->37         started        39 svchost.exe 4 27->39         started        41 3 other processes 27->41 file11 signatures12 process13 dnsIp14 72 91.92.240.114, 20000, 49748 THEZONEBG Bulgaria 32->72 74 ip-api.com 208.95.112.1, 49711, 49714, 80 TUT-ASUS United States 32->74 66 C:\ProgramData\eqdijoc0.ro5\app.dll, PE32+ 32->66 dropped 98 Sets debug register (to hijack the execution of another thread) 32->98 100 Modifies the context of a thread in another process (thread injection) 32->100 102 Unusual module load detection (module proxying) 32->102 43 rundll32.exe 3 32->43         started        68 C:\ProgramData\twnew2y1.dh3\app.dll, PE32+ 37->68 dropped 46 rundll32.exe 3 37->46         started        48 WerFault.exe 37->48         started        76 91.92.240.204, 10000, 49717 THEZONEBG Bulgaria 39->76 104 Installs a global keyboard hook 39->104 file15 signatures16 process17 signatures18 122 Writes to foreign memory regions 43->122 124 Allocates memory in foreign processes 43->124 126 Creates a thread in another existing process (thread injection) 43->126 50 chrome.exe 7 43->50         started        52 msedge.exe 43->52         started        128 Injects a PE file into a foreign processes 46->128 54 chrome.exe 7 46->54         started        56 msedge.exe 46->56         started        process19 process20 58 WerFault.exe 21 50->58         started        60 WerFault.exe 52->60         started        62 WerFault.exe 54->62         started        64 WerFault.exe 56->64         started       
Score:
29%
Verdict:
Benign
File Type:
PE
Link:
https://malprob.io/report/4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b/
Verdict:
Malicious
Threat:
Family.ORCUS
Link:
https://tip.neiki.dev/file/4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jlm37hr4hhrxoy3keoivcd2b6vrbel5nqkxl7mmk46jdz64tfsnq._file
Verdict:
malicious
Label(s):
donutloader
Create hunting rule
Similar samples:
2dc1310a2a0eb9b773d07ff527972aea4b150c3beae2a9cfa3e938cf122b1343
OrcusRAT
2ed1e219132beb9f057dfa6c27c83d094a886331d224215ce597bbb3e3b6f84a
OrcusRAT
46ac2ac73b0d42cacb46b0bdc9f2c359973d3dc2e20afe37576f611ce54550e8
OrcusRAT
4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b
OrcusRAT
c0c5bf845f1f796ca8d8f414206d501c36145d023e99c655567d44bcf96407ab
OrcusRAT
c5c37b03c253c7900b1c810ea10c03f89951d2558743f885ab2d0a8113d7a29f
OrcusRAT
error
OrcusRAT
+ 2 additional samples on MalwareBazaar
Result
Malware family:
orcus
Create hunting rule
Score:
  10/10
Tags:
family:donutloader family:orcus discovery loader persistence rat spyware stealer
Link:
https://tria.ge/reports/260212-la3glse14b/
Behaviour
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
cURL User-Agent
Browser Information Discovery
Looks up external IP address via web service
Loads dropped DLL
Downloads MZ/PE file
Orcurs Rat Executable
Detects DonutLoader
DonutLoader
Donutloader family
Orcus
Orcus family
Malware Config
C2 Extraction:
91.92.240.204:10000
Unpacked files
SH256 hash:
4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b
MD5 hash:
95357cf738a5d40e9388c8a2166816b1
SHA1 hash:
08be8af3cc21bcbce993e8a79cb97edac14eb15c
Link:
https://www.unpac.me/results/0fb3fd49-9c91-4912-be59-fdad776547dd/
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:ReflectiveLoader
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended
Reference:Internal Research
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:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants

File information

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

Web download

OrcusRAT

Executable exe 4ad9bf9e3c39e377636a2391510f41f562122fad82aebfb18ae7923cfb932c9b

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/53104/
  
URLhaus
https://urlhaus.abuse.ch/url/3691003/
  
Delivery method
Distributed via web download

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