MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003. 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: 31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003
SHA3-384 hash: ba3ebf7ce66540c59e3d749ae55cb2f868ace6f838263e74088a3128548946bf2ae9b8cd0d471f9084842374a60032fe
SHA1 hash: 53a53f95afeaaaa1af65b74a7caf394e246308b3
MD5 hash: 41b90e096ee11fd8a4afc9dde7f95311
humanhash: nine-november-west-london
File name:41b90e096ee11fd8a4afc9dde7f95311.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:538'112 bytes
First seen:2020-11-25 12:21:11 UTC
Last seen:2020-11-25 13:39:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'473 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:UZqFLZUhkvZiQ5NLZQ4OhDxzvSNgulLAKlto/2PMk:U8FyhmZ53Q4OjuN
Threatray 536 similar samples on MalwareBazaar
TLSH 34B42389BE0C597BFC3852FB91212C1D93F2650B2543E3991CAA35D80CE87E54947AFB
Reporter abuse_ch
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Launching the default Windows debugger (dwwin.exe)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/546904
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
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)
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)
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 322547 Sample: McevDcSoLX.exe Startdate: 25/11/2020 Architecture: WINDOWS Score: 100 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for dropped file 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 7 other signatures 2->49 7 McevDcSoLX.exe 1 6 2->7         started        11 vlc.exe 2 2->11         started        13 vlc.exe 3 2->13         started        process3 file4 33 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 7->33 dropped 35 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 7->35 dropped 37 C:\Users\user\AppData\...\McevDcSoLX.exe.log, ASCII 7->37 dropped 51 Injects a PE file into a foreign processes 7->51 15 McevDcSoLX.exe 2 7->15         started        17 McevDcSoLX.exe 7->17         started        19 McevDcSoLX.exe 7->19         started        21 vlc.exe 11->21         started        23 vlc.exe 2 13->23         started        signatures5 process6 process7 25 WerFault.exe 23 9 15->25         started        29 WerFault.exe 21->29         started        31 WerFault.exe 23->31         started        dnsIp8 41 192.168.2.1 unknown unknown 25->41 39 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 25->39 dropped file9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003/
Threat name:
ByteCode-MSIL.Trojan.BMassKeyLogger
Create hunting rule
Status:
Malicious
First seen:
2020-11-25 11:22:49 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
masslogger
Create hunting rule
Similar samples:
0bb9226c32e2505fc4f25a368e909afd29152096ac001aa604eda6ca16b34a3f
MassLogger
360dc5cb858d5a2215c6fd80ec3108fd2c7322baf1a315bbc2a878d3d776a7e3
MassLogger
4bf8074df54f40439111a17b0f440b02949845eda10af9b6478b33819535f9c3
MassLogger
5057b3e15343b23d956143c48a195f14e8fb991f5eaaec694ea3edd04419455b
MassLogger
5dd8cf7e789bc36a9a069cf42247f758e8900f8913c88e5ac84328d30e6d7c99
MassLogger
63a87036c2b530539530402c44995267ad50d4b76db185099407c83923d2ecb3
MassLogger
bde085b89e6e50618b1f38f6d889bf9554b11d0a08a82a315e0a66fec7718daf
MassLogger
ce073fce9de335c288fe205d5bf7fbdd9fd3ecc718821116dbad098f176a69de
MassLogger
d0f1b190868c2b25c602e6eee551a39fe677678d6e7dc45eb304fa82a5760799
MassLogger
e8fedfa7d06811f116ce712ea9e2c96918bc4e168105e092354ebd5f708319b7
MassLogger
+ 526 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger persistence spyware stealer
Link:
https://tria.ge/reports/201125-de65k41vzs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
ServiceHost packer
MassLogger
MassLogger Main Payload
Unpacked files
SH256 hash:
31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003
MD5 hash:
41b90e096ee11fd8a4afc9dde7f95311
SHA1 hash:
53a53f95afeaaaa1af65b74a7caf394e246308b3
Link:
https://www.unpac.me/results/bac38ca9-7582-4aa7-ab58-9b3dc98ad05c/
SH256 hash:
6edafa26d80732d199e639311ee6d24eb4f227556b71e7f3a7996cb0b5e12da0
MD5 hash:
1c1b3594edb6c1076532357502bce838
SHA1 hash:
0643a61266cc0811e1b551b9c52bc6dc9a4b5747
Link:
https://www.unpac.me/results/bac38ca9-7582-4aa7-ab58-9b3dc98ad05c/
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Link:
https://www.unpac.me/results/bac38ca9-7582-4aa7-ab58-9b3dc98ad05c/
SH256 hash:
39fccbb56745793c0d47a91da65879c51a5da95f3c752c893c32e0a5a430a1e9
MD5 hash:
7ec0d258dcf36298a084e4d857be963a
SHA1 hash:
b9981a467c271994a7ade85a4599e7c6f1c78df1
Detections:
win_masslogger_w0
Create hunting rule
Link:
https://www.unpac.me/results/bac38ca9-7582-4aa7-ab58-9b3dc98ad05c/
Parent samples :
b25aeadf9b7a24092bf9cc73be9f45ccfa08ac94c5a883aff2d8d8a5df68ffd9
e95d8b2d7c80f9b47d7c3fb368256962c357404e85f45701a473b6354ca18133
31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003

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: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.

Web download

MassLogger

Executable exe 31b06ca8f90f735bd3b209e576db1da2a5ab7f661b58f85eaabcde2181978003

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/852923/
  
Delivery method
Distributed via web download

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