MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5f2cfcc40a989e07af819d2fc1fb56deb23ec1141f07d3f52b4b358102e6452d. 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: 7


Intelligence 7 IOCs YARA 11 File information Comments
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SHA256 hash: 5f2cfcc40a989e07af819d2fc1fb56deb23ec1141f07d3f52b4b358102e6452d
SHA3-384 hash: 030f43974f1dc18cddb0c3a3796899e710125f584fcc37928b33df524d05cf7821997430dff19f024e9fd3d762e69fb5
SHA1 hash: 748771f0c86660f472261d0a9b1c0ceb15d7f185
MD5 hash: 5f6dda0b0c6b91c25a138ed4917a60cd
humanhash: equal-cup-island-hamper
File name:5f2cfcc40a989e07af819d2fc1fb56deb23ec1141f07d3f52b4b358102e6452d
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2020-11-08 14:22:36 UTC
Last seen:2020-11-10 11:22:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'097 x AgentTesla, 20'115 x Formbook, 12'356 x SnakeKeylogger)
ssdeep 6144:STNHXf500Mlg6Vs/VD0+WbfFAFP9NVfiwNEgpV:Ed50vGr5FP9NVflNE2V
TLSH F8747C1377A8EA3BD1BE2B3AF43607154BB5D407B716E38F5A5855B92C123868D803B3
Reporter seifreed
Tags:QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Generic-6295765-0
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Win.Malware.Generic-6623004-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Setting a keyboard event handler
Creating a file in the %temp% directory
Creating a window
Running batch commands
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Result
Threat name:
Quasar
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/524742
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 311478 Sample: AsYP97BO8j Startdate: 08/11/2020 Architecture: WINDOWS Score: 100 56 Malicious sample detected (through community Yara rule) 2->56 58 Antivirus / Scanner detection for submitted sample 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 7 other signatures 2->62 8 AsYP97BO8j.exe 15 5 2->8         started        13 AsYP97BO8j.exe 2 2->13         started        process3 dnsIp4 44 ip-api.com 208.95.112.1, 49730, 49731, 80 TUT-ASUS United States 8->44 40 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 8->40 dropped 42 C:\Users\user\AppData\...\AsYP97BO8j.exe.log, ASCII 8->42 dropped 66 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->66 15 Client.exe 14 6 8->15         started        19 schtasks.exe 1 8->19         started        file5 signatures6 process7 dnsIp8 46 ip-api.com 15->46 48 Antivirus detection for dropped file 15->48 50 Multi AV Scanner detection for dropped file 15->50 52 Machine Learning detection for dropped file 15->52 54 2 other signatures 15->54 21 cmd.exe 1 15->21         started        24 schtasks.exe 1 15->24         started        26 WerFault.exe 23 9 15->26         started        28 conhost.exe 19->28         started        signatures9 process10 signatures11 64 Uses ping.exe to sleep 21->64 30 conhost.exe 21->30         started        32 PING.EXE 1 21->32         started        34 chcp.com 1 21->34         started        36 Client.exe 21->36         started        38 conhost.exe 24->38         started        process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5f2cfcc40a989e07af819d2fc1fb56deb23ec1141f07d3f52b4b358102e6452d/
Threat name:
ByteCode-MSIL.Backdoor.QuasarRAT
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Status:
Malicious
First seen:
2020-11-08 14:24:32 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=l4wpzraktcpapl4btux4d62w32zd5qiud4d5h5jljm2ycaxgiuwq._file
Result
Malware family:
quasar
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Score:
  10/10
Tags:
family:quasar spyware trojan
Link:
https://tria.ge/reports/201108-9yqjkfgnpe/
Behaviour
Creates scheduled task(s)
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Looks up external IP address via web service
Loads dropped DLL
Executes dropped EXE
ServiceHost packer
Quasar RAT
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5f2cfcc40a989e07af819d2fc1fb56deb23ec1141f07d3f52b4b358102e6452d

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:Chrome_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:CN_disclosed_20180208_KeyLogger_1
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Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:MAL_QuasarRAT_May19_1
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Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MSILStealer
Create hunting rule
Author:https://github.com/hwvs
Description:Detects strings from C#/VB Stealers and QuasarRat
Reference:https://github.com/quasar/QuasarRAT
Rule name:Quasar
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:Quasar_RAT_1
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
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Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Select_from_enumeration
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Author:James_inthe_box
Description:IP and port combo
Rule name:Vermin_Keylogger_Jan18_1
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Author:Florian Roth
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:xRAT_1
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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.

  
Delivery method
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