MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 09793e9ccc95003ef64fe7d0a3417c04962ef3221b01fec9a1d8bf801a53251a. 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


MassLogger


Vendor detections: 7


Intelligence 7 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 09793e9ccc95003ef64fe7d0a3417c04962ef3221b01fec9a1d8bf801a53251a
SHA3-384 hash: e1ba17b4ada6a979bdb34f4bc71b28f5701d7b4af16a06d9d424fcde84b118ff73d72b021176e058246cc9457a848adc
SHA1 hash: 26f69fb8c94fad6f74bb1b00dfe73efd8269cada
MD5 hash: 6480545b390d83ec9643bc79433a62b9
humanhash: quebec-berlin-fillet-december
File name:6480545b390d83ec9643bc79433a62b9.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:3'280'384 bytes
First seen:2020-10-28 15:26:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:FG2avQvAOZM0QgtBIJuRAprkRUd16/rm6uvvlnh7cQd+uTa0eLIJZlxJUTD43zY1:
TLSH BDE54A3D6E8826E31177E676A4F60587FDE8658673790C4B02C32B486D4AF063E9B34D
Reporter abuse_ch
Tags:exe MassLogger


Avatar
abuse_ch
MassLogger SMTP exfil server:
mail.privateemail.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
88
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Masslogger
Create hunting rule
Link:
https://www.capesandbox.com/analysis/80536/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
DNS request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Creating a window
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/515268
Signature
.NET source code contains very large strings
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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 video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 306740 Sample: Yo1u6UuxPD.exe Startdate: 28/10/2020 Architecture: WINDOWS Score: 100 44 Multi AV Scanner detection for dropped file 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected MassLogger RAT 2->48 50 7 other signatures 2->50 6 Yo1u6UuxPD.exe 1 4 2->6         started        10 vlc.exe 1 2->10         started        12 vlc.exe 2->12         started        process3 file4 28 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 6->28 dropped 52 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 6->52 54 Injects a PE file into a foreign processes 6->54 14 Yo1u6UuxPD.exe 15 2 6->14         started        18 Yo1u6UuxPD.exe 6->18         started        20 vlc.exe 14 2 10->20         started        22 vlc.exe 10->22         started        24 vlc.exe 2 12->24         started        26 vlc.exe 12->26         started        signatures5 process6 dnsIp7 30 elb097307-934924932.us-east-1.elb.amazonaws.com 23.21.109.69, 49711, 80 AMAZON-AESUS United States 14->30 38 2 other IPs or domains 14->38 56 Tries to steal Mail credentials (via file access) 14->56 32 23.21.252.4, 49718, 80 AMAZON-AESUS United States 20->32 34 192.168.2.1 unknown unknown 20->34 40 2 other IPs or domains 20->40 58 Tries to harvest and steal browser information (history, passwords, etc) 20->58 36 50.19.252.36, 49719, 80 AMAZON-AESUS United States 24->36 42 2 other IPs or domains 24->42 signatures8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/09793e9ccc95003ef64fe7d0a3417c04962ef3221b01fec9a1d8bf801a53251a/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2020-10-28 15:28:06 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=bf4t5hgmsuad55sp47ikgql4aslc54zcdma75snb3c7yagsteuna._file
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger persistence spyware stealer
Link:
https://tria.ge/reports/201028-8ncxgn5jds/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Reads user/profile data of web browsers
MassLogger
MassLogger Main Payload
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:win_masslogger_w0
Create hunting rule
Author:govcert_ch

File information

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

Web download

MassLogger

Executable exe 09793e9ccc95003ef64fe7d0a3417c04962ef3221b01fec9a1d8bf801a53251a

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/80536/
  
URLhaus
https://urlhaus.abuse.ch/url/752072/
  
Delivery method
Distributed via web download

Comments