MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271. 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 30 File information Comments

SHA256 hash:	ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271
SHA3-384 hash:	c2d78d3b3dd7ed311f7dfa05ebbace7c23cdc4d260c2f57ec310e87458d3a056556304fc2dcf3cc9be61f960a9aa16a3
SHA1 hash:	f699f0c9bc8c0c80156ecaa646c914ae21b6c3df
MD5 hash:	e5286e2060d3ec013c80407ba1086f46
humanhash:	solar-xray-vegan-harry
File name:	17217831671683454f6df61f6caa23ed5f4cc5b8f04491a526221f21a1ce37a4fd58746cbb470.dat-decoded
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	938'496 bytes
First seen:	2024-07-24 01:06:08 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	24576:tzkdueXjq0OQKc2YSEegpQRDLusJLK1lkBoLP:VkdueXjq0OQKc2YSEegpshk1lk
TLSH	T1A4151914F7F855A5F06EBF30747099054A39BE43697DD74A2BA690890F6B3808CB1FA3
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	abuse_ch
Tags:	base64-decoded exe QuasarRAT

abuse_ch

Malware dropped as base64 encoded payload

Intelligence

File Origin

# of uploads :

# of downloads :

359

Origin country :

Vendor Threat Intelligence

Detection(s):

Win.Malware.Ursu-9802322-0

Win.Packed.Adwarex-9851111-0

Win.Packed.Bulz-9891112-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=66a053b86f74caeb2f89a927

Tags:

Discovery Generic Network Stealth Msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Creating a window

Sending a custom TCP request

Creating a file in the mass storage device

Verdict:

Malicious

Threat level:

10/10

Confidence:

91%

Tags:

anti-vm anti-vm certutil cmd cmstp evasive evasive eventvwr explorer fingerprint fingerprint hook keylogger lolbin lolbin macros-on-open net netsh packed powershell quasarrat reg regasm regedit remote schtasks stealer update vbnet

Link:

https://www.filescan.io/uploads/66a053b9556840231714f4da/reports/c112e080-14ac-409e-a789-b06b26c6ed97/overview

Verdict:

Malicious

Labled as:

Ransom.Imps.Generic

Link:

https://www.hybrid-analysis.com/sample/ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271

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/20634886-19da-4d15-b095-1a72983e2245

Result

Threat name:

Clipboard Hijacker, Quasar

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1479781

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Contains functionality to disable the Task Manager (.Net Source)

Contains functionality to hide user accounts

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

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Sigma detected: Potentially Suspicious Malware Callback Communication

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Yara detected AntiVM3

Yara detected Clipboard Hijacker

Yara detected Generic Downloader

Yara detected Powershell download and execute

Yara detected Quasar RAT

Yara detected UAC Bypass using CMSTP

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271/

Threat name:

ByteCode-MSIL.Ransomware.Imps

Status:

Malicious

First seen:

2024-07-02 07:48:18 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

31 of 38 (81.58%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=vtsvarqi2q6xag7mxmsgvpr4pmcih7jzatatuvtxbbhg7ghpajyq._file

Verdict:

malicious

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:recomeco discovery spyware trojan

Link:

https://tria.ge/reports/240724-bgna6asdqe/

Behaviour

Suspicious use of AdjustPrivilegeToken

System Location Discovery: System Language Discovery

Looks up external IP address via web service

Quasar RAT

Quasar payload

Malware Config

C2 Extraction:

15.235.61.212:5552

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/6f5b1289-47e7-4d7e-8df2-f8bdbf9e3da4

Unpacked files

SH256 hash:

542be6a092437c47aec4c046bf4636f9a3153954b0384141b8cc2922d68a38b5

MD5 hash:

bfb7da75069724d5ec80b44bc2e46d9f

SHA1 hash:

fe757e6a079f7be6efa5d15df7260792560f6576

Link:

https://www.unpac.me/results/145a0cd6-6b34-4ddf-b2ca-f1df36560c0c/

SH256 hash:

866c468f227e0ee2c3614cf97e74ebacf79fecb24845210488d13a42824cf50d

MD5 hash:

b064ffbd0835d50b00ebe34660832ecf

SHA1 hash:

bf5b5bba369127ccc6d740f27e40b2c67b5cf8bd

Link:

https://www.unpac.me/results/145a0cd6-6b34-4ddf-b2ca-f1df36560c0c/

SH256 hash:

3db2b0c012e3e770548b36eb84ea2278f34dfda82a269fc30f38e743b33855e3

MD5 hash:

ef33c4c8efc8c1b355ad64e12b010070

SHA1 hash:

ac30158d8bd81ec0b728a299c9e72789b4f33f31

Link:

https://www.unpac.me/results/145a0cd6-6b34-4ddf-b2ca-f1df36560c0c/

SH256 hash:

3a96d9a797a3b6b3ea0d8264ed1078508df9557e2f453217d52a75907f9b9465

MD5 hash:

547ebc92cac936d8c3459d2765948f4a

SHA1 hash:

09c143d609b65b19a97289ca7645df2a0bc39c83

Link:

https://www.unpac.me/results/145a0cd6-6b34-4ddf-b2ca-f1df36560c0c/

SH256 hash:

c1428ec7129ad3e36dad35d8992602cefcd6a593952834897424314fe029dd4b

MD5 hash:

67ca4c5eed9cab4b08064d4314dc0a86

SHA1 hash:

61dfa1d80d9e6b506d29e3897dd3ca08ade30988

Detections:

INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer

INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM

Link:

https://www.unpac.me/results/145a0cd6-6b34-4ddf-b2ca-f1df36560c0c/

Parent samples :
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SH256 hash:

ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271

MD5 hash:

e5286e2060d3ec013c80407ba1086f46

SHA1 hash:

f699f0c9bc8c0c80156ecaa646c914ae21b6c3df

Detections:

RDPWrap

QuasarRAT

win_masslogger_w0

win_agent_tesla_g1

malware_windows_xrat_quasarrat

RDPWrap

SUSP_NET_Msil_Suspicious_Use_StrReverse

cn_utf8_windows_terminal

Typical_Malware_String_Transforms

Quasar

win_quasarrat_j1

Link:

https://www.unpac.me/results/145a0cd6-6b34-4ddf-b2ca-f1df36560c0c/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/ace5504608d4/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:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

Rule name:	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse Create hunting rule
Author:	ditekSHen
Description:	Detects file containing reversed ASEP Autorun registry keys

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_RegKeyComb_DisableWinDefender Create hunting rule
Author:	ditekSHen
Description:	Detects executables embedding registry key / value combination indicative of disabling Windows Defender features

Rule name:	INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM Create hunting rule
Author:	ditekSHen
Description:	Detects executables embedding command execution via IExecuteCommand COM object

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCMD Create hunting rule
Author:	ditekSHen
Description:	Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF

Rule name:	INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer Create hunting rule
Author:	ditekSHen
Description:	detects Windows exceutables potentially bypassing UAC using eventvwr.exe

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

Rule name:	MALWARE_Win_ArrowRAT Create hunting rule
Author:	ditekSHen
Description:	Detects ArrowRAT

Rule name:	MALWARE_Win_DLAgent09 Create hunting rule
Author:	ditekSHen
Description:	Detects known downloader agent

Rule name:	MALWARE_Win_DLAgent10 Create hunting rule
Author:	ditekSHen
Description:	Detects known downloader agent

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

Rule name:	masslogger_gcch Create hunting rule
Author:	govcert_ch

Rule name:	msil_suspicious_use_of_strreverse Create hunting rule
Author:	dr4k0nia
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse

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:	pe_imphash Create hunting rule

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

Rule name:	RDPWrap Create hunting rule
Author:	@bartblaze
Description:	Identifies RDP Wrapper, sometimes used by attackers to maintain persistence.
Reference:	https://github.com/stascorp/rdpwrap

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

Rule name:	SUSP_NET_Msil_Suspicious_Use_StrReverse Create hunting rule
Author:	dr4k0nia, modified by Florian Roth
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Reference:	https://github.com/dr4k0nia/yara-rules

Rule name:	SUSP_OneNote Create hunting rule
Author:	spatronn
Description:	Hard-Detect One

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	Typical_Malware_String_Transforms Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects typical strings in a reversed or otherwise modified form
Reference:	Internal Research

Rule name:	Typical_Malware_String_Transforms_RID3473 Create hunting rule
Author:	Florian Roth
Description:	Detects typical strings in a reversed or otherwise modified form
Reference:	Internal Research

Rule name:	Windows_Trojan_MassLogger_511b001e Create hunting rule
Author:	Elastic Security

Rule name:	win_masslogger_w0 Create hunting rule
Author:	govcert_ch

File information

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

1683454f6df61f6caa23ed5f4cc5b8f04491a526221f21a1ce37a4fd58746cbb

QuasarRAT

exe ace5504608d43d701becbb246abe3c7b0483fd3904c13a5677084e6f98ef0271

(this sample)

Dropped by

SHA256 1683454f6df61f6caa23ed5f4cc5b8f04491a526221f21a1ce37a4fd58746cbb

Dropped by

MD5 3e2fef4f5f40929398da3ea1e87c1211

URLhaus

https://urlhaus.abuse.ch/url/3064102/

Delivery method

Distributed via web download

URLhaus

https://urlhaus.abuse.ch/url/3064103/

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 (GUARD_CF)	high

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