MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb
SHA3-384 hash: a222c573ac3fa838b66c6764c2758e88ddd783a6edc2c4c0d0ee8d1b3f72d7f32b3855212812711809e1baaa120c4231
SHA1 hash: e1dd823096a8ac931af0b0adc084bc251ec7cf87
MD5 hash: fb7768e45ca83c71e95e3c09dea0f75f
humanhash: kansas-texas-indigo-vermont
File name:Discord.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'286'592 bytes
First seen:2025-06-10 05:44:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:lXSWeWBRYRR1qJvHIPbcNE0KKSb7yviUSQaBaOwIRxl2S62/9+TN/iK7t+7RHg:L7YReEwKKSb7L3wip6fh/
Threatray 22 similar samples on MalwareBazaar
TLSH T10BB59E2039E67309F1B7DE7DD6F0B48A5E7EBE2326069649244133460E32643ED97D3A
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
dhash icon e8aa69d4d4cc8ee8 (7 x QuasarRAT, 4 x DCRat, 2 x OrcusRAT)
Reporter abuse_ch
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
474
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Discord.exe
Verdict:
Malicious activity
Analysis date:
2025-06-10 06:14:56 UTC
Tags:
uac auto-sch
Link:
https://app.any.run/tasks/f8bb208f-fa62-4bdc-9f94-a183a8d4bbc9

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/8198/
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:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6847c6828bd5d68a12e74afc
Tags:
autorun emotet quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the system32 subdirectories
Launching a process
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b759aab4-a1db-496c-8d87-730b0bf7ef93
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1710467
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops executables to the windows directory (C:\Windows) and starts them
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sample uses string decryption to hide its real strings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-06-04 01:51:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
30 of 36 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ufmygfhknaayhztdayyoa3lhqqltxpzsxwev5lzyqlkylyrgbhfq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
2a6add589b534632a04d3c6eaec0c4a7d6b072bffbb84c0b800bb24ef2ad1ab0
QuasarRAT
2adbf68e583680bf9804404c43990adf4f011783f4f1cdddcc9afb67039a16a8
QuasarRAT
a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb
QuasarRAT
a77fed3715f635883d0e54c30ab4d3ccad5afe0f845d27e5bff0f9410df4aaee
QuasarRAT
bf2ef5b129882d9a508c72a6afefede8ca7de3db89e5b3754ca8c470e27122ba
QuasarRAT
error
QuasarRAT
f879f50e21830b34b77fd94a33b6c395b9837bb701a7f5e4dad2e9d287af9e72
QuasarRAT
+ 12 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/250610-gfyy6azvfz/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Drops file in System32 directory
Executes dropped EXE
Verdict:
Malicious
Tags:
Win.Malware.Generic-9883083-0
YARA:
n/a
Link:
https://app.threat.zone/submission/2f143078-795a-48e9-8a23-e7916c60a23f
Unpacked files
SH256 hash:
a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb
MD5 hash:
fb7768e45ca83c71e95e3c09dea0f75f
SHA1 hash:
e1dd823096a8ac931af0b0adc084bc251ec7cf87
Link:
https://www.unpac.me/results/4792a170-bf47-4270-9710-a6eb92c0b89d/
SH256 hash:
8305237f6e27115eda1523e66b2fcde2ac4bb24ea832bd53d60b46f6284465c6
MD5 hash:
97257814c8a06fe386c23a5b9e7a12b3
SHA1 hash:
608d3c9fff54236f282259fd5d2af42f564a86b2
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/4792a170-bf47-4270-9710-a6eb92c0b89d/
Parent samples :
2a6add589b534632a04d3c6eaec0c4a7d6b072bffbb84c0b800bb24ef2ad1ab0
2adbf68e583680bf9804404c43990adf4f011783f4f1cdddcc9afb67039a16a8
f879f50e21830b34b77fd94a33b6c395b9837bb701a7f5e4dad2e9d287af9e72
bf2ef5b129882d9a508c72a6afefede8ca7de3db89e5b3754ca8c470e27122ba
a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb
Please 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/a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb

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: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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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:NETexecutableMicrosoft
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)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

QuasarRAT

Executable exe a1598314ea680183e6630630e06d6784173bbf32bd895eaf3882d585e22609cb

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/8198/
  
URLhaus
https://urlhaus.abuse.ch/url/3559994/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3559995/
  
URLhaus
https://urlhaus.abuse.ch/url/3560014/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments