MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 703aadea111eae71a7dfb3f2c63c4522b4edd138033fef221295f74d3509e10a. 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: 6


Intelligence 6 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 703aadea111eae71a7dfb3f2c63c4522b4edd138033fef221295f74d3509e10a
SHA3-384 hash: 7c1ad90fbd3252999c098c4a5a2dcfeae00513d1e35022ab0aa8d5f1b870966be111f3e472bbec5662607f2633d0a965
SHA1 hash: 5d8825e7344a3c925f22d0fe2a2955f9c2632d78
MD5 hash: c70bd03807471d22071110f5179bddc9
humanhash: texas-one-failed-vegan
File name:INV-009484_PDF.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'090'872 bytes
First seen:2020-10-26 08:53:41 UTC
Last seen:2020-10-26 11:23:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:x6zSk3YfMFMm++Q7+U0fXlUzRoVGdjuKgt+sBi9JrZcSM:x6zwMCm+3cXlUuVG/gt+qiTry
TLSH A0352301355D3F01E7DA62704E0BC87033A26FF25335CE5AACAD416EC6854BB98E99DE
Reporter abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
Malspam distributing QuasarRAT:

HELO: tonyhai
Sending IP: 103.225.25.6
From: Finance Team <krajcik@materian.ml>
Subject: RE: HCCI OUTSTANDING PAYMENT $59,459 USD
Attachment: INV-009484_PDF.zip (contains "INV-009484_PDF.exe")

QuasarRAT C2:
23.105.131.241:9000

Intelligence

File Origin
# of uploads :
2
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Detection:
RDPWrap
Create hunting rule
Link:
https://www.capesandbox.com/analysis/78864/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader35.7593.21918.3967.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Sending a custom TCP request
Launching cmd.exe command interpreter
Creating a process with a hidden window
Launching the process to change the firewall settings
Launching a process
Creating a file in the mass storage device
Enabling autorun with the shell\open\command registry branches
Result
Threat name:
AgentTesla Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/511434
Signature
.NET source code references suspicious native API functions
Connects to a pastebin service (likely for C&C)
Contains functionality to hide a thread from the debugger
Contains functionality to hide user accounts
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
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
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses netsh to modify the Windows network and firewall settings
Yara detected AgentTesla
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 304863 Sample: INV-009484_PDF.exe Startdate: 26/10/2020 Architecture: WINDOWS Score: 100 54 Malicious sample detected (through community Yara rule) 2->54 56 Multi AV Scanner detection for dropped file 2->56 58 Multi AV Scanner detection for submitted file 2->58 60 12 other signatures 2->60 8 INV-009484_PDF.exe 2->8         started        process3 signatures4 62 Hides threads from debuggers 8->62 64 Injects a PE file into a foreign processes 8->64 66 Contains functionality to hide a thread from the debugger 8->66 11 INV-009484_PDF.exe 16 7 8->11         started        16 WerFault.exe 23 9 8->16         started        process5 dnsIp6 46 ip-api.com 208.95.112.1, 49728, 80 TUT-ASUS United States 11->46 48 pastebin.com 104.23.99.190, 443, 49729 CLOUDFLARENETUS United States 11->48 50 www.minpic.net 104.31.78.228, 443, 49730 CLOUDFLARENETUS United States 11->50 44 C:\Users\user\AppData\Roaming\Venom.exe, PE32 11->44 dropped 68 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->68 18 cmd.exe 1 11->18         started        20 cmd.exe 1 11->20         started        22 cmd.exe 1 11->22         started        24 8 other processes 11->24 52 192.168.2.1 unknown unknown 16->52 file7 signatures8 process9 process10 26 netsh.exe 3 18->26         started        28 conhost.exe 18->28         started        40 2 other processes 20->40 30 netsh.exe 3 22->30         started        32 conhost.exe 22->32         started        34 netsh.exe 3 24->34         started        36 netsh.exe 3 24->36         started        38 netsh.exe 3 24->38         started        42 12 other processes 24->42
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/703aadea111eae71a7dfb3f2c63c4522b4edd138033fef221295f74d3509e10a/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-10-26 00:55:37 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oa5k32qrd2xhdj67wpzmmpcfek2o3ujyam766iqssx3u2nij4efa._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/201026-awkzyzcwls/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Modifies service
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Modifies Windows Firewall
ServiceHost packer
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

QuasarRAT

zip 9a1445f029d28343de5ba7bfac35b74bde499f37387398563eda36b4ec85f414

QuasarRAT

Executable exe 703aadea111eae71a7dfb3f2c63c4522b4edd138033fef221295f74d3509e10a

(this sample)

  
Dropped by
MD5 28780500a930862815f253fefede84f6
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 9a1445f029d28343de5ba7bfac35b74bde499f37387398563eda36b4ec85f414
Cape
Cape
https://www.capesandbox.com/analysis/78864/

Comments