MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9. 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


QuasarRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9
SHA3-384 hash: 208d7690762892855cb0c7dc1b44d93a09ac5f639735f474caa95d0f9b88a0c9e76763426fb13a4532aabfd529cc3667
SHA1 hash: e63c4399cb9fd4afad6ffee7728ba40d04cb1d17
MD5 hash: c3799bd66bafc9374592fcdf78e53fbd
humanhash: colorado-cola-golf-alanine
File name:Client.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'281'472 bytes
First seen:2025-11-22 23:56:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 49152:6k7fRbirmGNn4+KK8U7Lbwa+bXaCDAAIk:6sQhNnWK8U7LbwbrBD
TLSH T1DAB5CF203DEA400AF1B7AF75DBE075DA9B6EF2236706965D159103860E23B41EDC723E
TrID 58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
8.4% (.EXE) Win64 Executable (generic) (10522/11/4)
5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter Hexastrike
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
18
Origin country :
IE IE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Client.exe
Verdict:
Malicious activity
Analysis date:
2025-11-23 05:17:34 UTC
Tags:
pulsar rat
Link:
https://app.any.run/tasks/b22ea5c7-5ad8-4d78-a337-296d2f44f847

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/39430/
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Bulz-9933026-0
Create hunting rule

Win.Malware.Generic-6623004-0
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6922562e4917b5d23db0b0eb
Tags:
emotet quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the Program Files subdirectories
Launching a process
BSOD occurred
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 hacktool obfuscated packed privilege reconnaissance
Link:
https://www.filescan.io/uploads/692253dc6c89728b9825cb2e/reports/d78530f8-e1d0-4a38-b9cc-2c728ee4f177/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-01T23:21:00Z UTC
Last seen:
2025-11-03T08:11:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/74da91d1-52d0-4fa0-8c13-fa6043e91ef5
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9
Verdict:
inconclusive
YARA:
11 match(es)
Tags:
.Net Executable Fody/Costura Packer Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.14 SOS: 0.15 SOS: 0.18 SOS: 0.19 SOS: 0.20 SOS: 0.22 SOS: 0.23 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.27 SOS: 0.29 SOS: 0.32 SOS: 0.34 SOS: 0.35 SOS: 0.61 Win 32 Exe x86
Link:
https://app.malva.re/file/c3799bd66bafc9374592fcdf78e53fbd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9/
Threat name:
Win32.Backdoor.Quasar
Create hunting rule
Status:
Suspicious
First seen:
2025-11-02 03:59:18 UTC
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lrgbvs7wrwrthhkjxbk274y3kzh2vx5ksp5zep6avsemz4vp32uq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
execution persistence
Link:
https://tria.ge/reports/251123-alvqcs1pfj/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Verdict:
Malicious
Tags:
Win.Malware.Generic-9883083-0
YARA:
n/a
Link:
https://app.threat.zone/submission/522697fa-bc1e-43b2-9aa9-83f0178e478c
Unpacked files
SH256 hash:
5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9
MD5 hash:
c3799bd66bafc9374592fcdf78e53fbd
SHA1 hash:
e63c4399cb9fd4afad6ffee7728ba40d04cb1d17
Link:
https://www.unpac.me/results/c60b1b66-1c7a-4798-a4e7-6212ad872636/
SH256 hash:
6185d78b8a0cade9e6a7eeb728d4194d8d60b30275827fef2f3842e9e4508676
MD5 hash:
f2e9a3062b992c95e02bdfcd77f1f8a6
SHA1 hash:
12cee4da129fe7056ddf1e58e026e2a2de754f45
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
HKTL_NET_GUID_Quasar
Create hunting rule
Link:
https://www.unpac.me/results/c60b1b66-1c7a-4798-a4e7-6212ad872636/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5c4c1acbf68da3339d49b855aff31b564faadfaa93fb923fc0ac88ccf2afdea9

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:Costura_Protobuf
Create hunting rule
Author:@bartblaze
Description:Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.
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:DebuggerHiding__Thread
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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:Indicator_MiniDumpWriteDump
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Cape
Cape
https://www.capesandbox.com/analysis/39430/

Comments