MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 498d58f134baad0c991626318b487d4c75c3134f7bd0702d49b98a996e8aaefc. 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 21 File information Comments
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SHA256 hash: 498d58f134baad0c991626318b487d4c75c3134f7bd0702d49b98a996e8aaefc
SHA3-384 hash: 0c16979e6c52eef923e24af5ea94805bc5834c1af2cefa740b698b494724f4428c7166315bb2a0daf320c00a66bda7ce
SHA1 hash: e7c636bc332045559b74e64442669866cb05992a
MD5 hash: ec256c26130a04c9373508f4739e6873
humanhash: fanta-jig-burger-golf
File name:Clientrat.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2023-05-13 22:48:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'915 x AgentTesla, 19'820 x Formbook, 12'309 x SnakeKeylogger)
ssdeep 6144:ymrqQ4i1FFiEK5hsyJJRaviTj9Tb3RbR6pN1kbEj71TaXLr3Ny:dpliv3iiTRfRbRO8bEv1Tghy
TLSH T184748D1377A8D93BE1BF173AE43206154BB4D90BB716E3CB6A5855B92C1338A8D413B3
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 JaffaCakes118
Tags:QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
66
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
Clientrat.exe
Verdict:
Malicious activity
Analysis date:
2023-05-14 00:53:40 UTC
Tags:
rat quasar evasion
Link:
https://app.any.run/tasks/f9e44357-04d6-4d06-a9ae-864fe0aae63a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/389013/
Detection(s):
Win.Packed.Generic-9829635-0
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Win.Packed.Generic-9830106-0
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Win.Trojan.Generic-6295765-0
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Win.Malware.Generic-6623004-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Creating a file in the Program Files subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Sending a custom TCP request
Setting a keyboard event handler
Creating a file in the %AppData% subdirectories
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Query of malicious DNS domain
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint infostealer keylogger packed quasar quasarrat rat shell32.dll stealer stealer vermin xrat
Link:
https://www.filescan.io/uploads/646013e644b9dcfc19ec3729/reports/16a9d0c0-b7fe-4804-9134-c470db88b3b4/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/498d58f134baad0c991626318b487d4c75c3134f7bd0702d49b98a996e8aaefc
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/63801129-83c9-451b-bdef-0610cbb841d2
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1232597
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Quasar
Snort IDS alert for network traffic
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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 865578 Sample: Clientrat.exe Startdate: 14/05/2023 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 13 other signatures 2->49 8 Clientrat.exe 15 5 2->8         started        13 Clientrat.exe 2 2->13         started        process3 dnsIp4 31 ip-api.com 208.95.112.1, 49695, 49696, 80 TUT-ASUS United States 8->31 27 C:\Program Files (x86)\...\server rat.exe, PE32 8->27 dropped 29 C:\Users\user\AppData\...\Clientrat.exe.log, ASCII 8->29 dropped 51 May check the online IP address of the machine 8->51 53 Uses schtasks.exe or at.exe to add and modify task schedules 8->53 55 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->55 15 server rat.exe 14 4 8->15         started        19 schtasks.exe 1 8->19         started        file5 signatures6 process7 dnsIp8 33 revolutionhacker-58546.portmap.io 193.161.193.99, 49697, 49698, 49699 BITREE-ASRU Russian Federation 15->33 35 192.168.2.1 unknown unknown 15->35 37 ip-api.com 15->37 39 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->39 41 Installs a global keyboard hook 15->41 21 schtasks.exe 1 15->21         started        23 conhost.exe 19->23         started        signatures9 process10 process11 25 conhost.exe 21->25         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/498d58f134baad0c991626318b487d4c75c3134f7bd0702d49b98a996e8aaefc/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2023-04-26 11:28:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
29 of 37 (78.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jggvr4juxkwqzgiweyyywsd5jr24ge2pppihalkjxgfjs3ukv36a._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Link:
https://tria.ge/reports/230513-2rp6lshf43/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
revolutionhacker-58546.portmap.io:58546
Unpacked files
SH256 hash:
498d58f134baad0c991626318b487d4c75c3134f7bd0702d49b98a996e8aaefc
MD5 hash:
ec256c26130a04c9373508f4739e6873
SHA1 hash:
e7c636bc332045559b74e64442669866cb05992a
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/9c8f8fe7-91ba-48a5-8a9c-b863ed6fe378/
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/498d58f134baad0c991626318b487d4c75c3134f7bd0702d49b98a996e8aaefc

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.

Cape
Cape
https://www.capesandbox.com/analysis/389013/

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