MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92. 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: 16

Intelligence 16 IOCs YARA 26 File information Comments

SHA256 hash:	8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92
SHA3-384 hash:	ead17d2dd5064cefe77cfc7c3fa3e60d8b80b69a1adf58c42c0fac6c62d08f025a2bfb47d991c89778fa70728c763496
SHA1 hash:	e97293b8c90b4ac24ea7cc5754cb31c9a3362eb6
MD5 hash:	2ee13ad3e30c578ad50003bcb7010695
humanhash:	nuts-three-twelve-triple
File name:	file
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	986'112 bytes
First seen:	2026-02-25 02:57:50 UTC
Last seen:	2026-02-25 03:25:46 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'818 x AgentTesla, 19'741 x Formbook, 12'286 x SnakeKeylogger)
ssdeep	24576:S4svdSpSgoa8ayclOoWLuyWfLDnbP7xXvDv0:NsvdSpSgJ8DGO8yWDDnbNXv
Threatray	213 similar samples on MalwareBazaar
TLSH	T18725C09173F4860BE1FF2BB5E4B245594BBBB5529D36DB4F098490AD1EB37808E007A3
TrID	63.0% (.RLL) Microsoft Resource Library (x86) (177572/6/26) 25.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 2.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 2.3% (.EXE) Win64 Executable (generic) (6522/11/2) 1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	Bitsight
Tags:	dropped-by-amadey exe fbf543 QuasarRAT

Bitsight

url: http://130.12.180.43/files/1773787694/RMnsgES.exe

Intelligence

File Origin

# of uploads :

# of downloads :

193

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

QuasarRAT

Details

Link:

https://research.acce.ciphertechsolutions.com/results/3046e5fd-31f0-429d-8143-f27afdb017b1/

Malware family:

n/a

ID:

File name:

file

Verdict:

Malicious activity

Analysis date:

2026-02-25 02:58:02 UTC

Tags:

auto-reg evasion rat pulsar crypto-regex auto-sch

Link:

https://app.any.run/tasks/60c69799-8b73-4a60-93aa-e61da4e2591a

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/54514/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Bulz-9933026-0

Win.Packed.Msilzilla-9952790-0

Win.Packed.Msilzilla-9955952-0

Win.Malware.Generic-6623004-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=699e65488fffa866e3b1d7c7

Tags:

vmdetect emotet quasar

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug anti-vm anti-vm base64 cmd cscript evasive explorer fingerprint hacktool keylogger lolbin msbuild mshta obfuscated packed privilege quasar reconnaissance redline regasm regsvcs rundll32 runonce schtasks stack_pickle unsafe update

Link:

https://www.filescan.io/uploads/699e654497feb4afd6587828/reports/acef92ed-09dd-49a0-9102-fb23b4ac71fd/overview

Verdict:

Malicious

Labled as:

Application.MSILheracles.Generic

Link:

https://www.hybrid-analysis.com/sample/8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92

Verdict:

Malicious

File Type:

exe x32

Detections:

HEUR:Trojan-Banker.MSIL.ClipBanker.gen HEUR:Trojan.Win32.Generic Backdoor.MSIL.PulsarRAT.sb PDM:Trojan.Win32.Tasker.cust Trojan-PSW.MSIL.Agent.sb Trojan.MSIL.Quasar.gmd Trojan.MSIL.Agent.sb

Link:

https://opentip.kaspersky.com/8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/2f6de53d-14dd-46aa-bf89-ee452b15f9fe

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92

Verdict:

inconclusive

YARA:

16 match(es)

Tags:

.Net Executable Fody/Costura Packer Html Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.14 SOS: 0.15 SOS: 0.17 SOS: 0.18 SOS: 0.23 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.61 Win 32 Exe x86

Link:

https://app.malva.re/file/2ee13ad3e30c578ad50003bcb7010695

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92/

Verdict:

Malicious

Threat:

Family.PULSARRAT

Link:

https://tip.neiki.dev/file/8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92

Threat name:

ByteCode-MSIL.Trojan.Msilheracles

Status:

Malicious

First seen:

2026-02-25 02:58:15 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=r4y4a3eop2u6wri36jtgnlckswf3jbnsvc3r72wodgawgoyrnsja._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

6eeb5788ce02a71cee8cad314c4f1c467ac0dc77b23cbbef4f3a38bdfbd75f46

QuasarRAT

8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92

QuasarRAT

de4a52117da22ace7c927b2355a20af7091fb0461828daff9fd1eae90df7adde

QuasarRAT

error

QuasarRAT

+ 203 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar defense_evasion execution persistence spyware trojan

Link:

https://tria.ge/reports/260225-df9h4sdz3g/

Behaviour

Delays execution with timeout.exe

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Enumerates physical storage devices

Checks computer location settings

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Unpacked files

SH256 hash:

8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92

MD5 hash:

2ee13ad3e30c578ad50003bcb7010695

SHA1 hash:

e97293b8c90b4ac24ea7cc5754cb31c9a3362eb6

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/df727a69-5945-40ac-ad71-477a61acb990/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/8f31c06c8e7e/report/overview.html

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/8f31c06c8e7ea9eb451bf26666ac4a958bb485b2a8b71feace1981633b116c92

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:	Check_Dlls Create hunting rule

Rule name:	Check_VBox_Guest_Additions Create hunting rule

Rule name:	Check_VmTools Create hunting rule

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:	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:	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA Create hunting rule
Author:	ditekSHen
Description:	Detects Windows executables referencing non-Windows User-Agents

Rule name:	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Rule name:	MAL_BackNet_Nov18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects BackNet samples
Reference:	https://github.com/valsov/BackNet

Rule name:	MAL_BackNet_Nov18_1_RID2D6D Create hunting rule
Author:	Florian Roth
Description:	Detects BackNet samples
Reference:	https://github.com/valsov/BackNet

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

Rule name:	pe_imphash Create hunting rule

Rule name:	Pulsar_RAT Create hunting rule
Author:	@bartblaze
Description:	Identifies Pulsar RAT, based on Quasar RAT.
Reference:	https://malpedia.caad.fkie.fraunhofer.de/details/win.pulsar_rat

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)