MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21. 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: 12


Intelligence 12 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21
SHA3-384 hash: 94b320a60db19dd1cac12444647c43e05d19be2a69e747d59c11193cbb2bab92d607f52b0b772089a51558a7ac15f7fd
SHA1 hash: 031eafa5dd67d5c832a05adb64348cc03e8e5132
MD5 hash: b6ab9db1c2c1e606268a6f613cfcdf3d
humanhash: nitrogen-nebraska-tennessee-sierra
File name:b6ab9db1c2c1e606268a6f613cfcdf3d
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'864 bytes
First seen:2021-06-23 04:26:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:fvqQ4i1FFiEKKWDTzfkNqbCXlhN14KfrBF9dlldKePawhX:HplinTzMNLXlhL1F9/ltawhX
Threatray 196 similar samples on MalwareBazaar
TLSH 45747B1373E4E63BD1FD5B3AE4320A190BB49807B657E39B5A5856F83C223868D543B3
Reporter zbetcheckin
Tags:32 exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
122
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b6ab9db1c2c1e606268a6f613cfcdf3d
Verdict:
Malicious activity
Analysis date:
2021-06-23 04:27:46 UTC
Tags:
rat quasar evasion trojan
Link:
https://app.any.run/tasks/1f05a3a6-ded3-4334-a5c5-35e2730a39ba

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/167714/
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

Win.Packed.Generic-9829635-0
Create hunting rule

Win.Packed.Generic-9830106-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.Phoenix-Keylogger.UNOFFICIAL
Create hunting rule

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/0bc08a91-4c28-43cf-910b-eb4e9c72b8a6
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/806360
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Uses dynamic DNS services
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: 438771 Sample: pARx7ZA1Pd Startdate: 23/06/2021 Architecture: WINDOWS Score: 100 85 Found malware configuration 2->85 87 Malicious sample detected (through community Yara rule) 2->87 89 Antivirus / Scanner detection for submitted sample 2->89 91 6 other signatures 2->91 12 pARx7ZA1Pd.exe 15 5 2->12         started        17 pARx7ZA1Pd.exe 2 2->17         started        process3 dnsIp4 81 ip-api.com 208.95.112.1, 49738, 49743, 49751 TUT-ASUS United States 12->81 65 C:\Users\user\AppData\Roaming\...\Audio.exe, PE32 12->65 dropped 67 C:\Users\user\AppData\...\pARx7ZA1Pd.exe.log, ASCII 12->67 dropped 109 May check the online IP address of the machine 12->109 111 Uses schtasks.exe or at.exe to add and modify task schedules 12->111 113 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->113 19 Audio.exe 14 5 12->19         started        23 schtasks.exe 1 12->23         started        file5 signatures6 process7 dnsIp8 77 microsoftupdate001.duckdns.org 19->77 79 ip-api.com 19->79 95 Antivirus detection for dropped file 19->95 97 Multi AV Scanner detection for dropped file 19->97 99 May check the online IP address of the machine 19->99 101 3 other signatures 19->101 25 cmd.exe 1 19->25         started        28 schtasks.exe 1 19->28         started        30 conhost.exe 23->30         started        signatures9 process10 signatures11 103 Uses ping.exe to sleep 25->103 105 Uses ping.exe to check the status of other devices and networks 25->105 32 Audio.exe 4 25->32         started        36 conhost.exe 25->36         started        38 PING.EXE 1 25->38         started        40 chcp.com 1 25->40         started        42 conhost.exe 28->42         started        process12 dnsIp13 69 microsoftupdate001.duckdns.org 32->69 71 ip-api.com 32->71 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->83 44 cmd.exe 32->44         started        47 schtasks.exe 32->47         started        signatures14 process15 signatures16 107 Uses ping.exe to sleep 44->107 49 Audio.exe 44->49         started        53 conhost.exe 44->53         started        55 chcp.com 44->55         started        57 PING.EXE 44->57         started        59 conhost.exe 47->59         started        process17 dnsIp18 73 microsoftupdate001.duckdns.org 54.233.121.202, 49768, 8181 AMAZON-02US United States 49->73 75 ip-api.com 49->75 93 Hides that the sample has been downloaded from the Internet (zone.identifier) 49->93 61 schtasks.exe 49->61         started        signatures19 process20 process21 63 conhost.exe 61->63         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2021-06-19 00:51:38 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
41 of 46 (89.13%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6qdq36cbijq7tuqymjqytr6tymbuk76g5jcc5jatuqqtd5l4ziqq._file
Verdict:
malicious
Similar samples:
025432a99764f95f01790ed77271c9f52c44bd6f08763d4ea77b81afbcad6485
QuasarRAT
0294e192621b21d5c8f2288496930fe5e947fd66cdff1a119ca2f8bbdd8a537e
QuasarRAT
0eaa5bbea25ef06214bc21deab41eb7f5bdcdd4c24b0297a28607d30edf65ae1
QuasarRAT
2f99e627f3cf5b119435e4e247366ccd20a0379c6fa47673cbd66976693ecee1
QuasarRAT
72059ace4818aab4e44f27c08b16914c773f9b91a5db14c889f6a8a893e016be
QuasarRAT
759650986713eaf7fe5021ead7a0994f33767c14b6a7caf1079379b087df21fe
QuasarRAT
99a6c8e156dba4fda6e2b6ca0802cc08d49556b489e97618e565768329521413
QuasarRAT
b31fb3832c2f366796fcc9165c60c58da5c866973377ab0d43f71586c461b8fb
QuasarRAT
d478602bac8b8f334f06644dd92fbe60cbba6815ced96503c7aab4df6f305e77
QuasarRAT
e73cf978acde72a0ec094a6fe4302cd7e369624fe183057d01a1c47fd878324f
QuasarRAT
+ 186 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Link:
https://tria.ge/reports/210623-2e5tpkwzka/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Loads dropped DLL
Executes dropped EXE
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
microsoftupdate001.duckdns.org:8181
Unpacked files
SH256 hash:
f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21
MD5 hash:
b6ab9db1c2c1e606268a6f613cfcdf3d
SHA1 hash:
031eafa5dd67d5c832a05adb64348cc03e8e5132
Link:
https://www.unpac.me/results/0cb25e7c-7821-411b-9c5d-1ba489ac3c10/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21

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:INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifcats observed in infostealers
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
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
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:pe_imphash
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Web download

QuasarRAT

Executable exe f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1390333/
Cape
Cape
https://www.capesandbox.com/analysis/167714/

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