MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b. 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: 15

Intelligence 15 IOCs YARA 17 File information Comments

SHA256 hash:	ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b
SHA3-384 hash:	a6404311cd804ee5ec3e7d9aaa12ba639cb50658491d8a6e0baded802f8e0eebc802b40055086e07b585baf8c93082cf
SHA1 hash:	ad7cb8289b5aba22218c1b64c6b3d7de2773a2a4
MD5 hash:	91daee5b3324d9b5ae959a397b37cdfb
humanhash:	fourteen-sierra-eighteen-maryland
File name:	exec.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	2'280'960 bytes
First seen:	2025-08-05 13:09:32 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep	49152:R+7fRbirmGNn4+KK8U7Lbwa+bXaC8rid:RmQhNnWK8U7LbwbrB6
Threatray	74 similar samples on MalwareBazaar
TLSH	T1A2B5BF243DEA501AF1B7AF75DBD074CB8B6EF623760A964D149503860E23A41EDC723E
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
Reporter	abuse_ch
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

exec.exe

Verdict:

Malicious activity

Analysis date:

2025-08-05 02:21:28 UTC

Tags:

uac

Link:

https://app.any.run/tasks/6ae17a27-f08a-4154-a3e8-3077e2b00116

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/19006/

Detection(s):

Win.Malware.Generic-9883083-0

Win.Malware.Bulz-9933026-0

Win.Malware.Generic-6623004-0

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68916aa70b4775fb21366232

Tags:

autorun emotet 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 base64 hacktool obfuscated packed privilege reconnaissance

Link:

https://www.filescan.io/uploads/689202d7397fd3ce6f9d9b63/reports/6cca8cc3-643e-4c37-b244-c5912b817d2c/overview

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/77c8ffb1-f308-4468-af5e-dfeac67bb64f

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1750521

Signature

.NET source code contains potential unpacker

Drops PE files with benign system names

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

Sample uses string decryption to hide its real strings

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 Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b

Verdict:

inconclusive

YARA:

11 match(es)

Tags:

.Net Executable Fody/Costura Packer PDB Path PE (Portable Executable) SOS: 0.14 SOS: 0.15 SOS: 0.18 SOS: 0.19 SOS: 0.20 SOS: 0.22 SOS: 0.23 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.27 SOS: 0.29 SOS: 0.32 SOS: 0.34 SOS: 0.35 SOS: 0.61 Win 32 Exe x86

Link:

https://app.malva.re/file/91daee5b3324d9b5ae959a397b37cdfb

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b/

Verdict:

Malicious

Threat:

HEUR:Trojan.MSIL.Quasar

Link:

https://tip.neiki.dev/file/ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b

Threat name:

Win32.Trojan.Egairtigado

Status:

Malicious

First seen:

2025-08-05 02:21:28 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=zilbxn7mdi77ihwxsm2twwzz6pm7umbcwy2matzowqobzir2bsfq._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

6ce2462286dc687b1ccab7592a3a68c0504b2639e28cfb8a849e0cd12763fea0

QuasarRAT

7607946bbdeb75cfa95d20ad272299405c86df13f17426fca36e4dfa6264d252

QuasarRAT

9019276cf50b5e8397a04c81e75faf35308f2dd7b480db9a060e1c50e66678f2

QuasarRAT

bf8af2f1ae9d243e207e34fffd7aefc629645d729fa4a4e76f93535fa036d92e

QuasarRAT

ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b

QuasarRAT

error

QuasarRAT

+ 64 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

7/10

Tags:

execution persistence

Link:

https://tria.ge/reports/250805-qerccscm61/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Executes dropped EXE

Verdict:

Malicious

Tags:

Win.Malware.Generic-9883083-0

YARA:

n/a

Link:

https://app.threat.zone/submission/2eb1c7e5-a55f-4a93-9ece-1149e848af0e

Unpacked files

SH256 hash:

ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b

MD5 hash:

91daee5b3324d9b5ae959a397b37cdfb

SHA1 hash:

ad7cb8289b5aba22218c1b64c6b3d7de2773a2a4

Link:

https://www.unpac.me/results/aa76825b-1c1c-4931-8e40-efc1886823a2/

SH256 hash:

e54b3f90f18efaba3b4e714533d5e1f0aaf2f656b9166d6498e15b659cc41b8c

MD5 hash:

4a3c2b2b73407e79a9ebc6caece6c144

SHA1 hash:

70f64ab70fdc0c484da6f914d2742115c7a97141

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

HKTL_NET_GUID_Quasar

Link:

https://www.unpac.me/results/aa76825b-1c1c-4931-8e40-efc1886823a2/

Parent samples :
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SH256 hash:

b102a6d3128375d6c3c8efaa2583e4d12e0d6af1d5a3ae812c127acee241081a

MD5 hash:

c39d64b1896cde8f55afd0c4622275af

SHA1 hash:

07374f8cbed3278dae67495452f2b00c92d0234b

Link:

https://www.unpac.me/results/aa76825b-1c1c-4931-8e40-efc1886823a2/

SH256 hash:

d5235265564f0bfd23b7279d7bdccc9ea6383ed07c5d0bfdf6c99029af9a2c0c

MD5 hash:

1d3dd9fcc077e6b4f88c05b9aef53ee6

SHA1 hash:

12b33858bc84f54b8aa8dbcb5a0ec2da043a6f66

Link:

https://www.unpac.me/results/aa76825b-1c1c-4931-8e40-efc1886823a2/

SH256 hash:

a46dba71cf1aad44da9e1f15f46c4eadaecf26428f4c6673d032d472dced7b46

MD5 hash:

0492a35c94c6b0d7690a78d8840417eb

SHA1 hash:

1b09e340a4e3723bfeff8fd144ddca9b284c7545

Link:

https://www.unpac.me/results/aa76825b-1c1c-4931-8e40-efc1886823a2/

SH256 hash:

afad046bd095f1b981d2642dc138c53836f66fc1a3b8aa068bd79d115b49213c

MD5 hash:

bc92cdb5c8aac26fb73cd34e7b79cb93

SHA1 hash:

6cf7b8b51085fb61950e7e75d743adf13303aa81

Link:

https://www.unpac.me/results/aa76825b-1c1c-4931-8e40-efc1886823a2/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/ca161bb7ec1a/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/ca161bb7ec1a3ff41ed793353b5b39f3d9fa3022b634c04f2eb41c1ca23a0c8b

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:	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:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

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:	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.

Cape

https://www.capesandbox.com/analysis/19006/

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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