MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4d56971577536b2742d89e0ead542a8cd8818a798371d1cd04ec22b3931ec56. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4d56971577536b2742d89e0ead542a8cd8818a798371d1cd04ec22b3931ec56
SHA3-384 hash: 62146977d665d9d1075d0c58412b469b9cbfaf93e8622cb709ab6a921e5e936133d73f9be5395666bbee934de64b1772
SHA1 hash: fd8fd8641a7d9522bead63d7e88445eba6a321fd
MD5 hash: 519080d90aa74ec4ce8fcf4dbf9040b4
humanhash: south-uncle-glucose-sierra
File name:InquirySW23020KT.com.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:5'583'376 bytes
First seen:2020-11-07 10:23:10 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:TDiPxqBHLk3fH1bnw1gYG0bWL6miXdl/CrXjgnDula0Lxa0P2O0Rt1PfMGnsaEYo:
Threatray 920 similar samples on MalwareBazaar
TLSH D3460C3B1A905832E377D17981FA6D97BF1D6626B407BFCC8182675019C3BE2ED8902D
Reporter abuse_ch
Tags:exe MassLogger


Avatar
abuse_ch
Malspam distributing MassLogger:

HELO: mail.bestwesternindonesia.com
Sending IP: 45.126.133.137
From: Zheng Mei Yan <meiyan@kimann.com>
Subject: Inquiry: SW/230/20/KT - Aluminium Alloy, A2024, Rod
Attachment: InquirySW23020KT.com.gz (contains "InquirySW23020KT.com.exe")

MassLogger SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
88
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.35111451.24358.25042.UNOFFICIAL
Create hunting rule

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
Creating a file in the %temp% directory
Moving a file to the %temp% directory
Deleting a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
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.
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/523792
Signature
Found malware configuration
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: 310992 Sample: InquirySW23020KT.com.exe Startdate: 07/11/2020 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Multi AV Scanner detection for dropped file 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 7 other signatures 2->52 6 InquirySW23020KT.com.exe 1 4 2->6         started        10 vlc.exe 1 2->10         started        12 vlc.exe 2->12         started        process3 file4 26 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 6->26 dropped 28 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 6->28 dropped 30 C:\Users\...\InquirySW23020KT.com.exe.log, ASCII 6->30 dropped 54 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 6->54 14 InquirySW23020KT.com.exe 15 5 6->14         started        18 InquirySW23020KT.com.exe 6->18         started        20 InquirySW23020KT.com.exe 6->20         started        56 Injects a PE file into a foreign processes 10->56 22 vlc.exe 14 5 10->22         started        24 vlc.exe 5 12->24         started        signatures5 process6 dnsIp7 32 elb097307-934924932.us-east-1.elb.amazonaws.com 50.19.252.36, 49746, 80 AMAZON-AESUS United States 14->32 40 2 other IPs or domains 14->40 58 Tries to steal Mail credentials (via file access) 14->58 34 23.21.252.4, 49757, 80 AMAZON-AESUS United States 22->34 42 2 other IPs or domains 22->42 36 54.225.169.28, 49758, 80 AMAZON-AESUS United States 24->36 38 192.168.2.1 unknown unknown 24->38 44 2 other IPs or domains 24->44 60 Tries to harvest and steal browser information (history, passwords, etc) 24->60 signatures8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4d56971577536b2742d89e0ead542a8cd8818a798371d1cd04ec22b3931ec56/
Threat name:
ByteCode-MSIL.Trojan.BMassKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2020-11-06 21:43:44 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=utkws4kxou3le5bnrhqovvkcvdgyqgfhta3r2hgqj3bcwojr5rla._file
Verdict:
malicious
Label(s):
masslogger
Create hunting rule
Similar samples:
0e8c4ea04759257bb250d60f1a3b1988888044fd06ce2f9fccef81b047eee4bc
MassLogger
3e3acb1023d772ba35383feaf4fb7f2bde81e7565b88b3d7d5729812663af561
MassLogger
49406d04e4b7268279ea17e07bdb6e89c1d09b599b5afc2f9e95983db09125ef
MassLogger
4c8728146976e30a09321d1e158aeeb46908c54fa8614ccef7fbc9761956eca4
MassLogger
62d9b3d45df47e2bb1c64913382a31a7a15989123b363593ca144a9113082408
MassLogger
a8a2e34c6f491ba5d0f16899835630257c0124249fd1d0852b27e736b2a98b3d
MassLogger
c5216e025f487ad72623e702871432afa40739fc1d2b24fca4bcbd7f009d0064
MassLogger
dc05645067f3f3ccf6a4e647dcf935c928fd981ef904672603a7ab409488166e
MassLogger
e387e96aeb069a6060b78456f7cac7be958a23a617ef2b6adc6caf3db23ce8b4
MassLogger
fa1dd731e06f5a7470f45a3f09f0b39d2e236d022c9a9d6e52828e8214c5893e
MassLogger
+ 910 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger persistence ransomware spyware stealer
Link:
https://tria.ge/reports/201107-m3khwjz8q2/
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 log file
Unpacked files
SH256 hash:
1e1da5a6c02a014de8d5d9ab88627eae852ec567a58ee96d357925688a272b5d
MD5 hash:
cb7e5acc1fd5015c272ca08a826c8ba1
SHA1 hash:
5a8842317778020ac09235477d0422e7cad2b8a0
Detections:
win_masslogger_w0
Create hunting rule
Link:
https://www.unpac.me/results/7c0c0455-4be6-4f92-abc0-8280a19d9335/
Parent samples :
8ab8448549ffa379c39811667a25d2e922c6ed440de7ceae541e76b06d315f47
c5216e025f487ad72623e702871432afa40739fc1d2b24fca4bcbd7f009d0064
a4d56971577536b2742d89e0ead542a8cd8818a798371d1cd04ec22b3931ec56
e93cf93e8ff851cd540fa165166665bbb0f5bfd1103166686230e9cb810caa05
f4c976f3587362c6138a4dd309aabf2ec5c31f0ebe98b4618a2f52f145ce4a77
SH256 hash:
929caf6de3522c893c61e26cdaa5ea9258dcfda1ca4594506dfc7ad4028397cb
MD5 hash:
e7f3a2ab27ee3f003a107cf06f8c8039
SHA1 hash:
618282a4d662c963b1a8ef4ff8fe14d2f75c013c
Link:
https://www.unpac.me/results/7c0c0455-4be6-4f92-abc0-8280a19d9335/
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Link:
https://www.unpac.me/results/7c0c0455-4be6-4f92-abc0-8280a19d9335/
SH256 hash:
13aabba289b67e05a5447bfe5918b5fdedbb09e5f3d744535ca6e66e30202b39
MD5 hash:
7991855031134dc0016e8ddbe151d4b3
SHA1 hash:
fc71e9c04bac4e614788d1d080cfa1947dba9f81
Link:
https://www.unpac.me/results/7c0c0455-4be6-4f92-abc0-8280a19d9335/
SH256 hash:
a4d56971577536b2742d89e0ead542a8cd8818a798371d1cd04ec22b3931ec56
MD5 hash:
519080d90aa74ec4ce8fcf4dbf9040b4
SHA1 hash:
fd8fd8641a7d9522bead63d7e88445eba6a321fd
Link:
https://www.unpac.me/results/7c0c0455-4be6-4f92-abc0-8280a19d9335/
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:Embedded_PE
Create hunting rule
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.

Malspam

MassLogger

gz 4d250d01dedd78afb01b3402b31d8b2400fa57f4e52092efa8d9083d5b1d6090

MassLogger

Executable exe a4d56971577536b2742d89e0ead542a8cd8818a798371d1cd04ec22b3931ec56

(this sample)

  
Dropped by
MD5 703063c7ebfb0c797f4efaa1fed761e7
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 4d250d01dedd78afb01b3402b31d8b2400fa57f4e52092efa8d9083d5b1d6090

Comments