MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 89b4121aae370dd8b644fc0e426e24d17087b25e1646aaf02e56b147627efd16. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 89b4121aae370dd8b644fc0e426e24d17087b25e1646aaf02e56b147627efd16
SHA3-384 hash: 1101e3055840456ce885122fdd78fca078b44d970ee49019a41c0d8bd617f8145e494dce512a9934855a3d22179308fa
SHA1 hash: 6e4a7154bdb687c4ca60489de07c1f11725ff89e
MD5 hash: 11ce51ff71aee19f244e2b3bb21abc7e
humanhash: lima-tango-bakerloo-lima
File name:Ekstre.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:1'244'672 bytes
First seen:2020-08-04 11:07:43 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 12288:FHX8kTii5+w0i2niYpfW4DS20atR2ru4R7+S8IfTD1mY8:FHLT5gnZpfW0tOJjrD18
Threatray 2'083 similar samples on MalwareBazaar
TLSH 6145172A36928540D56A0676C0A9DCC1BB65764B3B92E72F30D703485F03BDFBF0B56A
Reporter abuse_ch
Tags:exe geo MassLogger TUR ZiraatBank


Avatar
abuse_ch
Malspam distributing MassLogger:

HELO: ileti.ziraatbank.com.tr
Sending IP: 45.11.19.43
From: ZIRAAT BANKASI <ziraatbank@ileti.ziraatbank.com.tr>
Reply-To: ZIRAAT BANKASI <ziraatbank@ileti.ziraatbank.com.tr>
Subject: T.C. Ziraat Bankası Hesap Ekstresi
Attachment: Ekstre.r00 (contains "Ekstre.exe")

MassLogger SMTP exfil server:
mail.aydan.com.tr:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Detection(s):
SecuriteInfo.com.Fareit-FVT11CE51FF71AE.13914.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file
Creating a process from a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/409183
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Creates executable files without a name
Injects a PE file into a foreign processes
May check the online IP address of the machine
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)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 256849 Sample: Ekstre.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 92 37 cdn.onenote.net 2->37 39 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->39 53 Yara detected MassLogger RAT 2->53 55 Yara detected AntiVM_3 2->55 57 .NET source code contains very large array initializations 2->57 59 2 other signatures 2->59 8 Ekstre.exe 7 2->8         started        12 pcalua.exe 1 2->12         started        14 pcalua.exe 1 1 2->14         started        signatures3 process4 file5 31 C:\Users\user\Desktop\.exe, PE32 8->31 dropped 33 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 8->33 dropped 35 C:\Users\user\Desktop\.exe:Zone.Identifier, ASCII 8->35 dropped 65 Creates executable files without a name 8->65 16 .exe 2 8->16         started        19 cmd.exe 1 8->19         started        21 .exe 3 12->21         started        signatures6 process7 signatures8 47 Writes to foreign memory regions 16->47 49 Allocates memory in foreign processes 16->49 51 Injects a PE file into a foreign processes 16->51 23 RegAsm.exe 15 3 16->23         started        27 reg.exe 1 1 19->27         started        29 conhost.exe 19->29         started        process9 dnsIp10 41 elb097307-934924932.us-east-1.elb.amazonaws.com 23.21.203.116, 49755, 80 AMAZON-AESUS United States 23->41 43 nagano-19599.herokussl.com 23->43 45 api.ipify.org 23->45 61 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 23->61 63 Creates an autostart registry key pointing to binary in C:\Windows 27->63 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/89b4121aae370dd8b644fc0e426e24d17087b25e1646aaf02e56b147627efd16/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 11:09:08 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rg2begvog4g5rnse7qhee3re2fyipms6czdkv4bok2yuoyt67ula._file
Verdict:
unknown
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+ 2'073 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
ransomware persistence spyware stealer family:masslogger
Link:
https://tria.ge/reports/200804-mfc9hqqkxa/
Behaviour
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Looks up external IP address via web service
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
MassLogger
MassLogger log file
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/89b4121aae370dd8b644fc0e426e24d17087b25e1646aaf02e56b147627efd16

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: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.

Malspam

MassLogger

r00 73309126ec66ea503cb725508d58a02dfeee3c5644dcf4afc0e77593c7cc23b8

MassLogger

Executable exe 89b4121aae370dd8b644fc0e426e24d17087b25e1646aaf02e56b147627efd16

(this sample)

  
Dropped by
MD5 ef91c10f06552eec282ad118184660fb
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/38542/
  
Dropped by
SHA256 73309126ec66ea503cb725508d58a02dfeee3c5644dcf4afc0e77593c7cc23b8

Comments