MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5d55d80ed9f7a6562945060514c4144c4c1cf36002e97f97f43245c1f16d3891. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5d55d80ed9f7a6562945060514c4144c4c1cf36002e97f97f43245c1f16d3891
SHA3-384 hash: 43a6b105aa541c4b78f0c7c9cd60b03f46ea357901da53df1e499fe1c1f9fffe7d83e458ac5f65b55f1069c0b8aaf063
SHA1 hash: 5d2806892c881512b7e303d0b7babe5f9653f031
MD5 hash: b55a856cebe36a5de9e66300ced6f048
humanhash: ack-uniform-saturn-lemon
File name:b55a856cebe36a5de9e66300ced6f048
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:48'640 bytes
First seen:2022-01-27 02:34:33 UTC
Last seen:2022-01-27 06:54:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 768:44V0hnUcoIOyTbUH7Ea/11HvJdaOz4UJOf9K0K13OTwCzyls:44VOUciyTb07Ea9FvJ/IFK1jIyS
TLSH T1D42349416769CAC1E1084A3D96E3DA700BF1DE56B92AC72B50C43B1FFD733B0DA1A658
File icon (PE):PE icon
dhash icon 0cdeb9afab3b8fc3 (2 x QuasarRAT)
Reporter zbetcheckin
Tags:32 exe QuasarRAT

Intelligence

File Origin
# of uploads :
3
# of downloads :
205
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b55a856cebe36a5de9e66300ced6f048
Verdict:
Malicious activity
Analysis date:
2022-01-27 02:39:57 UTC
Tags:
evasion trojan
Link:
https://app.any.run/tasks/37a1db93-4e6f-48b3-9f2c-0e58a8ac156e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/223946/
Detection(s):
SecuriteInfo.com.MSIL.Downloadergen7.24016.9769.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Connecting to a non-recommended domain
Sending an HTTP GET request
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe obfuscated packed replace.exe strictor
Link:
https://www.filescan.io/uploads/61f204da59d130b02a55ff7f/reports/03c9ff3e-56a5-4248-8212-d4779ab146ec/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7ad6fc56-d7f5-479c-ad32-80ea132db767
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/928550
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
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)
Injects a PE file into a foreign processes
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
Yara detected Costura Assembly Loader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 561027 Sample: ri5C7X21BV Startdate: 27/01/2022 Architecture: WINDOWS Score: 100 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 Antivirus detection for URL or domain 2->62 64 8 other signatures 2->64 7 ri5C7X21BV.exe 16 7 2->7         started        12 xpsrchvw.exe 14 3 2->12         started        14 xpsrchvw.exe 3 2->14         started        process3 dnsIp4 48 studentesting.duckdns.org 136.144.41.66, 49741, 49780, 49810 WORLDSTREAMNL Netherlands 7->48 50 oplktoupinarina.sytes.net 7->50 38 C:\Users\user\AppData\...\xpsrchvw.exe, PE32 7->38 dropped 40 C:\Users\...\xpsrchvw.exe:Zone.Identifier, ASCII 7->40 dropped 42 C:\Users\user\AppData\...\ri5C7X21BV.exe.log, ASCII 7->42 dropped 66 May check the online IP address of the machine 7->66 68 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->68 70 Injects a PE file into a foreign processes 7->70 16 ri5C7X21BV.exe 2 7->16         started        20 cmd.exe 1 7->20         started        52 oplktoupinarina.sytes.net 12->52 72 Multi AV Scanner detection for dropped file 12->72 74 Machine Learning detection for dropped file 12->74 22 cmd.exe 1 12->22         started        54 oplktoupinarina.sytes.net 14->54 24 cmd.exe 1 14->24         started        file5 signatures6 process7 dnsIp8 44 studentesting.duckdns.org 16->44 46 ip-api.com 208.95.112.1, 49779, 80 TUT-ASUS United States 16->46 56 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->56 26 conhost.exe 20->26         started        28 timeout.exe 1 20->28         started        30 conhost.exe 22->30         started        32 timeout.exe 1 22->32         started        34 conhost.exe 24->34         started        36 timeout.exe 1 24->36         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5d55d80ed9f7a6562945060514c4144c4c1cf36002e97f97f43245c1f16d3891/
Threat name:
Win32.Trojan.Strictor
Create hunting rule
Status:
Malicious
First seen:
2022-01-26 22:56:03 UTC
AV detection:
10 of 43 (23.26%)
Threat level:
  5/5
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:remote persistence spyware trojan
Link:
https://tria.ge/reports/220127-c22jysecdq/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
studentesting.duckdns.org:61639
silktoupinarina.sytes.net:61639
Unpacked files
SH256 hash:
5d55d80ed9f7a6562945060514c4144c4c1cf36002e97f97f43245c1f16d3891
MD5 hash:
b55a856cebe36a5de9e66300ced6f048
SHA1 hash:
5d2806892c881512b7e303d0b7babe5f9653f031
Link:
https://www.unpac.me/results/3952b062-e094-413b-850e-b74784dbae0e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5d55d80ed9f7a6562945060514c4144c4c1cf36002e97f97f43245c1f16d3891

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: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 5d55d80ed9f7a6562945060514c4144c4c1cf36002e97f97f43245c1f16d3891

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/223946/
  
URLhaus
https://urlhaus.abuse.ch/url/2008044/

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