MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d446a98b783427a524db452e5adb33b8f5e025f3c7720f022667f856762b2e4. 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: 9


Intelligence 9 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d446a98b783427a524db452e5adb33b8f5e025f3c7720f022667f856762b2e4
SHA3-384 hash: 174bbbc407e50fc71ae3f0e2b4894388aed27687bedf29962e89f3c0d276cb995b953cd0867f5ca82bcb2fbf0b027b5a
SHA1 hash: e9943b05f4edf3a0069ff7b603520525670253ac
MD5 hash: 87119bb117609dac591a29d3ff151dac
humanhash: earth-echo-blossom-victor
File name:8d446a98b783427a524db452e5adb33b8f5e025f3c7720f022667f856762b2e4
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2020-11-14 18:22:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:cx6bPXhLApfpFMFd9z7tubsJIbGbDBELfKCuJwYYRG+:EmhApAFzXt+GbDyKbJwYY8+
Threatray 124 similar samples on MalwareBazaar
TLSH CB748C1373E8EA3BD1FD573AE032461947B0D487B616E39B5A5865F92C133868E843B3
Reporter seifreed
Tags:QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
84
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Generic-6295765-0
Create hunting rule

Win.Malware.Generic-6623004-0
Create hunting rule

Win.Packed.Passwordstealera-9792228-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
DNS request
Sending an HTTP GET request
Creating a file in the Windows 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 file in the %AppData% subdirectories
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
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.
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/535324
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops executables to the windows directory (C:\Windows) and starts them
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: 316761 Sample: YqLI38vGdF Startdate: 15/11/2020 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 YqLI38vGdF.exe 15 5 2->8         started        13 YqLI38vGdF.exe 2 2->13         started        process3 dnsIp4 44 ip-api.com 208.95.112.1, 49716, 49717, 80 TUT-ASUS United States 8->44 40 C:\Windows\SysWOW64\svchost\svchosts.exe, PE32 8->40 dropped 42 C:\Users\user\AppData\...\YqLI38vGdF.exe.log, ASCII 8->42 dropped 68 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->68 15 svchosts.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 66 Drops executables to the windows directory (C:\Windows) and starts them 21->66 30 conhost.exe 21->30         started        32 chcp.com 1 21->32         started        34 PING.EXE 21->34         started        36 svchosts.exe 21->36         started        38 conhost.exe 24->38         started        process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8d446a98b783427a524db452e5adb33b8f5e025f3c7720f022667f856762b2e4/
Threat name:
ByteCode-MSIL.Backdoor.QuasarRAT
Create hunting rule
Status:
Malicious
First seen:
2020-11-14 18:25:40 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rvcgvgfxqnbhuusnwrjollnthohv4as7hr3sb4bcmz7ykz3cwlsa._file
Verdict:
malicious
Similar samples:
2fd0f9d77de102d8b53f3d38eb559d2cd0d0e9f4ba3cfbc042f952367b5ca65e
QuasarRAT
4a4378de27cd95ef7ab712064303f817e01f4630bce5f290ce3af15d55a43321
QuasarRAT
588eb55b57e118fbee66a6d0586de453ea4e0ae1a781c73e1bbe10e8e24641fc
QuasarRAT
5c711e224f09cfe6b651f58e3a075c54e7ad2d3a677cc71835bc37d8f21ad4b2
QuasarRAT
749cf44e03a021f01f3604fd54781103ab897a69db71229f9319888be7a8bcd2
QuasarRAT
8fcf4d1528f2945b751c3d9035e17f7143fdbc94ef687f5c9e4e35d892c5922b
QuasarRAT
a0f43d8dbeafd898f5711b63275b81c5169e640f90a87977c2ab391418d68f63
QuasarRAT
a4e79d826cc13a421a5b3b785413d92254992bceb6d392c72de16b61653b346f
QuasarRAT
b23274e47a003476681da8925f2c15ff1c7ef988cabf76dbf1e5799a914a3ab1
QuasarRAT
ba9fd12aa57da28572f82eb2010a44b89a9cc1c9738f801fec02f44857163b8f
QuasarRAT
+ 114 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar spyware trojan
Link:
https://tria.ge/reports/201114-fhnhp5vrds/
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
Drops file in System32 directory
Looks up external IP address via web service
Loads dropped DLL
Executes dropped EXE
ServiceHost packer
Quasar RAT
Unpacked files
SH256 hash:
8d446a98b783427a524db452e5adb33b8f5e025f3c7720f022667f856762b2e4
MD5 hash:
87119bb117609dac591a29d3ff151dac
SHA1 hash:
e9943b05f4edf3a0069ff7b603520525670253ac
Link:
https://www.unpac.me/results/22473903-5109-4b19-8791-4b40beb3af0b/
SH256 hash:
0fd89ae57ad9dfcde73bd7451bf57b9ff96e8a68a85e68316b46df4015fe9df4
MD5 hash:
8b11eca6785852294ba0b6935f2c5e7d
SHA1 hash:
6f2c770f6828226d2e5c4ab8b473cf24e0bf7ae1
Link:
https://www.unpac.me/results/22473903-5109-4b19-8791-4b40beb3af0b/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Quasar
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8d446a98b783427a524db452e5adb33b8f5e025f3c7720f022667f856762b2e4

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
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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
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
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:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Vermin_Keylogger_Jan18_1
Create hunting rule
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
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.

  
Delivery method
Other

Comments