MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 da6d10f762f019e36f8a2f8547bb4fa33ec67d508db580b6c5b156a1e1dc576a. 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 1 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: da6d10f762f019e36f8a2f8547bb4fa33ec67d508db580b6c5b156a1e1dc576a
SHA3-384 hash: 75a53430079884474d335d436d45e09bd69aaffddc14120c8a8f40404895ce6553ce86bd2a22924cde1384eb28830ee0
SHA1 hash: b002c16460e77be617fffbb48036f9ac2e41e9c2
MD5 hash: 626c4356573ed5f69bc6303664dec68b
humanhash: east-hotel-tennessee-march
File name:cnmainobf.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:417'280 bytes
First seen:2022-03-09 11:07:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:MTEgdc0Y8XAGbgiIN2RSBeII7HbOkQgaezUUXxnsbCuxTcTR3N:MTEgdfYGbg8OwjzJnUxTcdN
Threatray 675 similar samples on MalwareBazaar
TLSH T14194389413EF41A9E2AF67B4FCB13624AAF1F826B1A7E75D4580B1F56C52B20C940733
Reporter r3dbU7z
Tags:exe QuasarRAT

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
85.202.169.69:5352 https://threatfox.abuse.ch/ioc/393154/

Intelligence

File Origin
# of uploads :
1
# of downloads :
222
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/248593/
Detection(s):
Win.Packed.Passwordstealera-9792228-0
Create hunting rule

Win.Malware.Bulz-9823462-0
Create hunting rule

Win.Malware.Generic-9883082-0
Create hunting rule

Win.Packed.Downeks-6898097-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for analyzed file
Creating a process from a recently created file
Creating a file
Setting a keyboard event handler
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm control.exe explorer.exe greyware keylogger obfuscated packed quasarrat rat remote.exe replace.exe schtasks.exe shell32.dll stealer update.exe
Link:
https://www.filescan.io/uploads/62288a960cd58dbd926e1690/reports/b2773336-6778-4a00-941a-4be0ae0923fc/overview
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/3fc3a00b-cefc-4482-b970-12a979ae6186
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/953222
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Exploit detected, runtime environment starts unknown processes
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 domain / URL
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)
Sigma detected: Suspicious Shells Spawn by Java
Sigma detected: Suspicius Schtasks From Env Var Folder
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 585703 Sample: cnmainobf.exe Startdate: 09/03/2022 Architecture: WINDOWS Score: 100 41 bigrussianfloppa.duckdns.org 2->41 63 Multi AV Scanner detection for domain / URL 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Antivirus / Scanner detection for submitted sample 2->67 69 6 other signatures 2->69 9 cnmainobf.exe 5 2->9         started        13 cnmainobf.exe 2 2->13         started        signatures3 process4 file5 37 C:\Users\user\AppData\Roaming\...\java.exe, PE32 9->37 dropped 39 C:\Users\user\AppData\...\cnmainobf.exe.log, ASCII 9->39 dropped 71 Uses schtasks.exe or at.exe to add and modify task schedules 9->71 73 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->73 15 java.exe 2 9->15         started        19 schtasks.exe 1 9->19         started        21 java.exe 14 2 13->21         started        23 schtasks.exe 1 13->23         started        signatures6 process7 dnsIp8 43 bigrussianfloppa.duckdns.org 85.202.169.69, 49758, 49764, 49774 GUDAEV-ASRU Netherlands 15->43 51 Antivirus detection for dropped file 15->51 53 Multi AV Scanner detection for dropped file 15->53 55 May check the online IP address of the machine 15->55 61 3 other signatures 15->61 25 schtasks.exe 1 15->25         started        27 conhost.exe 19->27         started        45 tools.keycdn.com 185.172.148.96, 443, 49766 PROINITYPROINITYDE Germany 21->45 47 api.ipify.org.herokudns.com 3.220.57.224, 443, 49767 AMAZON-AESUS United States 21->47 49 2 other IPs or domains 21->49 57 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->57 59 Installs a global keyboard hook 21->59 29 schtasks.exe 1 21->29         started        31 conhost.exe 23->31         started        signatures9 process10 process11 33 conhost.exe 25->33         started        35 conhost.exe 29->35         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/da6d10f762f019e36f8a2f8547bb4fa33ec67d508db580b6c5b156a1e1dc576a/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2022-03-08 22:07:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
35 of 42 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3jwrb53c6am6g34kf6cupo2pum7mm7kqrw2ybnwfwflkdyo4k5va._file
Verdict:
malicious
Similar samples:
2acbe411d9169a8ea08c2f54cec03901956e3a1a5c80a0153ebe09792961b549
QuasarRAT
965a8d621907f2a2c04e8ca84801f448c68e133491b26d5336c851059db5b3ec
QuasarRAT
a33be1069f51683e3ef5290bedad88f032df7b67fde8955bf2ad72b2f8d5e647
QuasarRAT
a9bf4d70ada021f2b8212502cb3e3f7373855675ac4a7fa080cedbd9e13b08fd
QuasarRAT
b352b773440958a40d189376f980b7808568221e61911c7bbbaeb7cb12a89fc5
QuasarRAT
d26ba4768bef5a8e4424b6c90b74b0c22129f9df94022b5f84850c22b289b7e7
QuasarRAT
+ 665 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:cnmain spyware suricata trojan
Link:
https://tria.ge/reports/220309-m8j9csbbdj/
Behaviour
Creates scheduled task(s)
Modifies system certificate store
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Executes dropped EXE
Quasar Payload
Quasar RAT
suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)
Malware Config
C2 Extraction:
bigrussianfloppa.duckdns.org:5352
Unpacked files
SH256 hash:
da6d10f762f019e36f8a2f8547bb4fa33ec67d508db580b6c5b156a1e1dc576a
MD5 hash:
626c4356573ed5f69bc6303664dec68b
SHA1 hash:
b002c16460e77be617fffbb48036f9ac2e41e9c2
Link:
https://www.unpac.me/results/4f3d1d07-66d8-45a9-83dc-50a1f78ec9e4/
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/da6d10f762f019e36f8a2f8547bb4fa33ec67d508db580b6c5b156a1e1dc576a

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: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: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: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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

QuasarRAT

Executable exe da6d10f762f019e36f8a2f8547bb4fa33ec67d508db580b6c5b156a1e1dc576a

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/248593/

Comments