MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba. 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: 18

Intelligence 18 IOCs YARA 21 File information Comments

SHA256 hash:	90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba
SHA3-384 hash:	34a88002ccb2de1c96021c27c2b775781a4c32efb2dd4a10d274b1c0f80add1104000f14b341ab1d2890892bf6c397ae
SHA1 hash:	c7a8291fa7b7fd6ed7c633e95b6c48d646acfc6d
MD5 hash:	a84e026ecca48ed97df640bb5b68e980
humanhash:	triple-comet-indigo-lake
File name:	bMO0.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	356'864 bytes
First seen:	2023-05-26 16:09:05 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep	6144:P7qQ4i1FFiEKrmVxmg1TnE0DaGbdRly/9LxcGBFGbVzS:jpli8xx1Q9tLxdBERzS
Threatray	423 similar samples on MalwareBazaar
TLSH	T1A0749D1337E4EA3BD1FD173AE43206194BB0D513B606E38B9A5A95F82D133868D947B3
TrID	53.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 12.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 9.5% (.SCR) Windows screen saver (13097/50/3) 7.6% (.EXE) Win64 Executable (generic) (10523/12/4) 4.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter	pmelson
Tags:	exe QuasarRAT VoidRAT

Intelligence

File Origin

# of uploads :

# of downloads :

303

Origin country :

Vendor Threat Intelligence

Malware family:

quasar

ID:

File name:

bMO0.exe

Verdict:

Malicious activity

Analysis date:

2023-05-26 16:10:02 UTC

Tags:

rat quasar evasion

Link:

https://app.any.run/tasks/cf072ae1-4672-4973-9e01-c2c6822b1a73

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

QuasarRAT

Link:

https://www.capesandbox.com/analysis/392193/

Detection(s):

Win.Packed.Generic-9829635-0

Win.Packed.Generic-9830106-0

Win.Trojan.Generic-6295765-0

Win.Malware.Generic-6623004-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Sending an HTTP GET request

Creating a window

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm fingerprint infostealer keylogger lolbin lolbin packed quasar quasarrat rat shell32.dll stealer stealer vermin xrat

Link:

https://www.filescan.io/uploads/6470d9dc6abf73674178b88a/reports/bcdd14b1-41a3-489e-8c71-24d311b0a264/overview

Verdict:

Malicious

Labled as:

Trojan.MSIL.Agent

Link:

https://www.hybrid-analysis.com/sample/90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba

Result

Verdict:

MALICIOUS

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Quasar RAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/3f17e4f9-2393-4b78-8054-290c5f66aa23

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1243358

Signature

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

C2 URLs / IPs found in malware configuration

Found malware configuration

Hides that the sample has been downloaded from the Internet (zone.identifier)

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

May check the online IP address of the machine

Multi AV Scanner detection for submitted file

Snort IDS alert for network traffic

Yara detected Generic Downloader

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba/

Threat name:

ByteCode-MSIL.Trojan.Quasar

Status:

Malicious

First seen:

2023-05-26 16:10:06 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=sdc3viidb24rxnpyodvxlzep4mmh2qojhbjhnfnolg64n63l2o5a._file

Verdict:

malicious

QuasarRAT

54346a7a040be3f21373bf39fd0ed63b9cf06ebd666d6b182de45eeec8a8c08f

QuasarRAT

593d5422f60594c17ba8e5759f7317b95733315a152c309b14ae8a5c681c867f

QuasarRAT

8bae1101c170b80b204b36e64940682492c28d5226d833087e28c4a5a41115e7

QuasarRAT

c0ee70653bbb235781bb0be39ff78e255213082d582418ce21f384e21da1a44e

QuasarRAT

cc40742a81f95bd9554c79dc243a2949258c11d7a0967ded831448addb0cbc49

QuasarRAT

+ 413 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office04 spyware trojan

Link:

https://tria.ge/reports/230526-tmc2gsgg5t/

Behaviour

Suspicious use of AdjustPrivilegeToken

Looks up external IP address via web service

Quasar RAT

Quasar payload

Malware Config

C2 Extraction:

cryptersandtools.ddns.com.br:5552

Unpacked files

SH256 hash:

90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba

MD5 hash:

a84e026ecca48ed97df640bb5b68e980

SHA1 hash:

c7a8291fa7b7fd6ed7c633e95b6c48d646acfc6d

Detections:

QuasarRAT

Link:

https://www.unpac.me/results/61402de9-3370-4f79-b567-04b1a2f9956f/

Malware family:

xRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/90c5baa1030e/report/overview.html

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/90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba

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:	CN_disclosed_20180208_KeyLogger_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects malware from disclosed CN malware set
Reference:	https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details

Rule name:	CN_disclosed_20180208_KeyLogger_1_RID3227 Create hunting rule
Author:	Florian Roth
Description:	Detects malware from disclosed CN malware set
Reference:	https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details

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

Rule name:	INDICATOR_SUSPICIOUS_GENInfoStealer Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing common artifcats observed in infostealers

Rule name:	malware_Quasar_strings Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect QuasarRAT in memory

Rule name:	MALWARE_Win_QuasarRAT Create hunting rule
Author:	ditekSHen
Description:	QuasarRAT payload

Rule name:	MAL_QuasarRAT_May19_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	MAL_QuasarRAT_May19_1 Create hunting rule
Description:	Detects QuasarRAT malware

Rule name:	MAL_QuasarRAT_May19_1_RID2E1E Create hunting rule
Author:	Florian Roth
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	pe_imphash Create hunting rule

Rule name:	Quasar_RAT_1 Create hunting rule
Author:	@SOCRadar
Description:	Detects Quasar RAT

Rule name:	Quasar_RAT_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_1_RID2B54 Create hunting rule
Author:	Florian Roth
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_2 Create hunting rule
Description:	Detects Quasar RAT

Rule name:	Quasar_RAT_2 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Quasar_RAT_2_RID2B55 Create hunting rule
Author:	Florian Roth
Description:	Detects Quasar RAT
Reference:	https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Vermin_Keylogger_Jan18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Vermin Keylogger
Reference:	https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/

Rule name:	Windows_Trojan_Quasarrat_e52df647 Create hunting rule
Author:	Elastic Security

Rule name:	xRAT_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Patchwork malware
Reference:	https://goo.gl/Pg3P4W

Rule name:	xRAT_1_RID2900 Create hunting rule
Author:	Florian Roth
Description:	Detects Patchwork malware
Reference:	https://goo.gl/Pg3P4W

File information

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

Web download

QuasarRAT

exe 90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba

(this sample)

Link

https://www.virustotal.com/gui/file/90c5baa1030eb91bb5f870eb75e48fe3187d41c938527695ae59bdc6fb6bd3ba/detection

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/392193/

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