MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce. 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 20 File information Comments 1

SHA256 hash:	6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce
SHA3-384 hash:	cb8553d7451c83bba1f9dd67c68f4008316a153b386aa75442793f739df2e1b809d044a8b893408d8694a3c22a15fedb
SHA1 hash:	0bf01f37003f8474f7e038a5846a8f3d1231ab4f
MD5 hash:	e0bd71734fc197f5d445a0220c946718
humanhash:	finch-stairway-alpha-sixteen
File name:	e0bd71734fc197f5d445a0220c946718
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	3'265'024 bytes
First seen:	2024-07-22 07:07:40 UTC
Last seen:	2024-07-22 11:04:01 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	49152:P3ye82ipaSmopPZlGPBbLbrJSrMayVgjokdtNTHHB72eh2NT:P3982ipaSmopPZlGPBnbrJSrMayVK
Threatray	728 similar samples on MalwareBazaar
TLSH	T192E55B143BF85F23E1ABE273A5B0041267F0FC5AF3A3EB5B2191677A1C53B5049426A7
TrID	37.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 29.5% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 8.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 6.7% (.SCR) Windows screen saver (13097/50/3) 5.3% (.EXE) Win64 Executable (generic) (10523/12/4)
Reporter	zbetcheckin
Tags:	32 exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

320

Origin country :

Vendor Threat Intelligence

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Msilheracles-9900242-0

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL

Win.Packed.Downeks-6898097-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=669e05552f6eaff4b90f25f5

Tags:

Execution Generic Network Stealth Quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% subdirectories

Launching a process

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm certreq crypto expand explorer hook infostealer keylogger lolbin quasar quasarrat rat remote schtasks stealer stealer

Link:

https://www.filescan.io/uploads/669e055655fc3a4ae2ed6024/reports/bc845914-e126-4750-a321-7a1a4840a25e/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce

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.

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/ab416264-ca8f-4b14-9a03-cc8ec84de04e

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1478107

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

C2 URLs / IPs found in malware configuration

Drops PE files with benign system names

Found malware configuration

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

Installs a global keyboard hook

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: Files With System Process Name In Unsuspected Locations

Sigma detected: Schedule system process

Sigma detected: Suspect Svchost Activity

Sigma detected: System File Execution Location Anomaly

System process connects to network (likely due to code injection or exploit)

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected Generic Downloader

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce

Detection:

quasar

Link:

https://mwdb.cert.pl/sample/6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce/

Threat name:

ByteCode-MSIL.Backdoor.Quasarrat

Status:

Malicious

First seen:

2024-07-21 20:09:40 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=m4ao42iw3yvum273vdx5tufku4optess2p4vyvymgzubtjc2wlha._file

Verdict:

malicious

QuasarRAT

3ad07a1878c8b77f9fc0143d8f88c240d8d0b986d015d4c0cd881ad9c0d572e1

QuasarRAT

9eefa45ebc884b3b6fa4349d140963700c9f2c2543840d965b11c7f815346ab9

QuasarRAT

a451e748bc1e4c05bdaa722b35a5f6dd1a78765ac8967187a61b846f819c8bf6

QuasarRAT

ced760664a7c5580e324d99d695b119c1f3ec94d1d9c56d1d3882347f0c6eb10

QuasarRAT

+ 718 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:office04 spyware trojan

Link:

https://tria.ge/reports/240722-hx8qcsvapq/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Executes dropped EXE

Quasar RAT

Quasar payload

Malware Config

C2 Extraction:

45.66.231.154:4782

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/844bfc4b-445c-474a-b2ee-4baf31f24f4e

Unpacked files

SH256 hash:

6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce

MD5 hash:

e0bd71734fc197f5d445a0220c946718

SHA1 hash:

0bf01f37003f8474f7e038a5846a8f3d1231ab4f

Detections:

QuasarRAT

malware_windows_xrat_quasarrat

cn_utf8_windows_terminal

MAL_QuasarRAT_May19_1

Link:

https://www.unpac.me/results/7688ab15-cd0b-4c3d-80ee-f1e2df7ae192/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/6700ee6916de/report/overview.html

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

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 artifacts observed in infostealers

Rule name:	MALWARE_Win_QuasarStealer Create hunting rule
Author:	ditekshen
Description:	Detects Quasar infostealer

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

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_RID2E1E Create hunting rule
Author:	Florian Roth
Description:	Detects QuasarRAT malware
Reference:	https://blog.ensilo.com/uncovering-new-activity-by-apt10

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

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:	pe_imphash Create hunting rule

Rule name:	RC6_Constants Create hunting rule
Author:	chort (@chort0)
Description:	Look for RC6 magic constants in binary
Reference:	https://twitter.com/mikko/status/417620511397400576

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

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

Rule name:	Windows_Generic_Threat_803feff4 Create hunting rule
Author:	Elastic Security

File information

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

Web download

QuasarRAT

exe 6700ee6916de2b466bfba8efd9d0aaa71cf99252d3f95c570c366819a45ab2ce

(this sample)

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3060219/

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Comments

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zbet commented on 2024-07-22 07:07:41 UTC

url : hxxp://185.196.10.57/selectex-file-host/Client-built.exe