MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56aa88c30296a6ce5054dc947d2a63d35ac152ba17e8732e60591f4cf900c475. 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: 6


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

SHA256 hash: 56aa88c30296a6ce5054dc947d2a63d35ac152ba17e8732e60591f4cf900c475
SHA3-384 hash: 26fb7f0437b4dc7665fa235f8250599f5318067f7393c78748c26ba4ced02a53143ad33956015f03d59ded1da0ab8fdf
SHA1 hash: 23a65ad1f830b7c06b4049c5dcccda0c8d4c8aa9
MD5 hash: fbb69fa861c45d483a8eee4d0b925bd3
humanhash: football-papa-speaker-carpet
File name:Document_BT24PDF.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:899'584 bytes
First seen:2020-10-27 10:02:20 UTC
Last seen:2020-10-27 22:58:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'477 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:oV/4rjvGiO9C6gn+0h4kn/n2zeblhPnlxt0Frttq+XzWHp771uzn6T1:VO9C6Aqk/nflj0o+XzWJ771uzn6h
Threatray 373 similar samples on MalwareBazaar
TLSH 27159EB27C92587ECA6F077551A985C0FABA16C73FA48B0D71AF430C0E11A5BEB53247
Reporter abuse_ch
Tags:exe geo MassLogger ROU


Avatar
abuse_ch
Malspam distributing MassLogger:

HELO: proleasing.ro
Sending IP: 193.238.58.230
From: Isabela Rusu <isabela.rusu@thermonet-sv.ro>
Subject: FW: Document - Banca Transilvania
Attachment: Document_BT24PDF.iso (contains "Document_BT24PDF.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
84
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/79767/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Sending a UDP request
Creating a window
Creating a file
Creating a process from a recently created file
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/513217
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
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 detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 305721 Sample: Document_BT24PDF.exe Startdate: 27/10/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected MassLogger RAT 2->38 40 6 other signatures 2->40 8 Document_BT24PDF.exe 7 2->8         started        process3 file4 22 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 8->22 dropped 24 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 8->24 dropped 26 C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32 8->26 dropped 42 Writes to foreign memory regions 8->42 44 Allocates memory in foreign processes 8->44 46 Tries to detect virtualization through RDTSC time measurements 8->46 48 Injects a PE file into a foreign processes 8->48 12 RegAsm.exe 15 2 8->12         started        16 WerFault.exe 23 9 8->16         started        signatures5 process6 dnsIp7 28 elb097307-934924932.us-east-1.elb.amazonaws.com 54.235.83.248, 49765, 80 AMAZON-AESUS United States 12->28 30 nagano-19599.herokussl.com 12->30 32 api.ipify.org 12->32 50 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 12->50 52 Tries to steal Mail credentials (via file access) 12->52 54 Tries to harvest and steal browser information (history, passwords, etc) 12->54 56 Adds a directory exclusion to Windows Defender 12->56 18 powershell.exe 24 12->18         started        signatures8 process9 process10 20 conhost.exe 18->20         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/56aa88c30296a6ce5054dc947d2a63d35ac152ba17e8732e60591f4cf900c475/
Threat name:
ByteCode-MSIL.Infostealer.Maslog
Create hunting rule
Status:
Malicious
First seen:
2020-10-27 07:27:08 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k2virqycs2tm4ucu3skh2ktd2nnmcuv2c7uhgltalepuz6iayr2q._file
Verdict:
unknown
Similar samples:
30e5d725ef8367f4d2d044ab45908659b7eda107d02452f6b30a87e4a6a49885
MassLogger
538796eab271c26afcd8fbd9da301c3b0122b1f44ae02b976857ece6faf9a15c
MassLogger
5bd7c2f7e12df0ef8aca5ee5b491c5fb5041a2ae05e60022ecbb4c4f41765657
MassLogger
5fb23e7a8d39bc15fc97d7f216e8806bff57c1281ec73b44d74272e17dc0105b
MassLogger
8dd5127608894ff5bc5a0c653c97fe7c252449669e254662a0bcd7c32c6b15fb
MassLogger
a56c4971d725640fe582ff4f884612d1a59b18d60206099a9c8099168a3c446e
MassLogger
aa92ca49b0f84494890222ae164a725e2ff94d9a5e996cc124fbdcbe2f0882d5
MassLogger
bc07e7101d3f176c9b7fca71bd68dbd146bfe4e9ff2c18ea5cee0147f1c9ddad
MassLogger
ef4c04da2b5fe6ce33597d1dbe44a8b84b156cb1bd03b3a3f8d8c9dabede075b
MassLogger
f4ca039244746f1bd66d245c7e8d3f29abe101179636d2f09594fe51e2d37f83
MassLogger
+ 363 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
stealer spyware family:masslogger
Link:
https://tria.ge/reports/201027-t3drcn94mj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:MassLogger
Create hunting rule
Author:kevoreilly
Description:MassLogger
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:Quasar_RAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
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

iso abb20b525046009cb38c994e7c25516ff8ed072add4c90d437353cf8e0243550

MassLogger

Executable exe 56aa88c30296a6ce5054dc947d2a63d35ac152ba17e8732e60591f4cf900c475

(this sample)

  
Dropped by
MD5 db136a3a848a3dfa8bb999a2583c8d0c
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/79767/
  
Dropped by
SHA256 abb20b525046009cb38c994e7c25516ff8ed072add4c90d437353cf8e0243550

Comments