MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 373ff5729bbb58bba6a9426b0a35c58a921be8b76a3ccf1dd9f99f410af8dddd. 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

SHA256 hash:	373ff5729bbb58bba6a9426b0a35c58a921be8b76a3ccf1dd9f99f410af8dddd
SHA3-384 hash:	b8a9ce910aa9f2b257e4a800717af0bd2fd60d90e453a717e1e8283b3a683cd3c97256c39cd0619aeb8f1418109c007d
SHA1 hash:	02d50dfe38ff1bc27d76ba3866d326f0a8777208
MD5 hash:	0cc939dccba0be64d2c6dc13e7b55729
humanhash:	four-green-gee-aspen
File name:	vessel details.exe
Download:	download sample
Signature	MassLogger Create hunting rule
File size:	1'092'608 bytes
First seen:	2020-12-01 14:19:52 UTC
Last seen:	2020-12-10 08:09:51 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	24576:FzXzH7p+6/Jpbe6z156UHAKPpSEgOzF4/q2Rt4DwNBQsS7gSDQ4:hVr/zz156Ug2gGF4/Lt4DwrQsGg
Threatray	580 similar samples on MalwareBazaar
TLSH	BE352333920339F4FBBA0E7C709139492DB4A4936376D48DBD46014E26F7154EEEA9E4
Reporter	GovCERT_CH
Tags:	MassLogger

Intelligence

File Origin

# of uploads :

# of downloads :

201

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/106252/

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.405.1492.20377.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a UDP request

Creating a window

Unauthorized injection to a recently created process

Creating a file

DNS request

Sending an HTTP GET request

Using the Windows Management Instrumentation requests

Launching a process

Reading critical registry keys

Sending an HTTP POST request

Sending a custom TCP request

Setting a global event handler for the keyboard

Result

Gathering data

Result

Threat name:

MassLogger RAT

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/552437

Signature

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

Binary contains a suspicious time stamp

Machine Learning detection for sample

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)

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

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 AntiVM_3

Yara detected Costura Assembly Loader

Yara detected MassLogger RAT

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/373ff5729bbb58bba6a9426b0a35c58a921be8b76a3ccf1dd9f99f410af8dddd/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-12-01 08:53:26 UTC

AV detection:

25 of 29 (86.21%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=g477k4u3xnmlxjvjijvqunofrkjbx2fxni6m6hoz7gpuccxy3xoq._file

Verdict:

malicious

Label(s):

masslogger

MassLogger

1a9a0333c8c544cdf43f51eaa895169513c27bdb818f42bb301d476ac1330672

MassLogger

354d8f2552b03d6c566580d1cddd01abe71a8932952465947e4d50969f7a1cb5

MassLogger

53d90b9015e5e9a79fbf291249046b2a0376bf10d2e68861df1f60d057a306ff

MassLogger

5696bccd4642191a1923cf4a10d8c1544bbb2f3f1993034b0acdf85840974e93

MassLogger

69cbd1cde514fa34db916c79d034366b291e3ea63917b52ec76bef88060bfce0

MassLogger

ae1bb9370bff1b5634fcc9aebf4f0fd874f66e75ceba1153449fbf8459272db8

MassLogger

be978699739f217bd2d71f769d8f16ba1a90c519fd10f19475d4e040f9e7c05c

MassLogger

d588c7766dfc23258901040f1ab532e52d1d0a431d3f8d9e308dc92679d8a2c1

MassLogger

e1f6596be115f9fa6aea3ac07636a505c92fadbfb97de7e8f12c67a934c4d38b

MassLogger

+ 570 additional samples on MalwareBazaar

Result

Malware family:

masslogger

Score:

10/10

Tags:

family:masslogger spyware stealer

Link:

https://tria.ge/reports/201201-8p3psar8jj/

Behaviour

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Looks up external IP address via web service

Checks computer location settings

Reads user/profile data of web browsers

MassLogger

MassLogger Main Payload

Unpacked files

SH256 hash:

373ff5729bbb58bba6a9426b0a35c58a921be8b76a3ccf1dd9f99f410af8dddd

MD5 hash:

0cc939dccba0be64d2c6dc13e7b55729

SHA1 hash:

02d50dfe38ff1bc27d76ba3866d326f0a8777208

Link:

https://www.unpac.me/results/56a608de-8741-41c1-9b3e-d2fe0ff0b522/

SH256 hash:

c435ea9c707e27a3ab167a8f53b068cb14e9f6354405589d3913b29d00ea4c2f

MD5 hash:

53a9976fa24b1f7fdf5371e2a1dca907

SHA1 hash:

05517f396b0d548db5658c60825ca0dc9abdc1a1

Detections:

win_masslogger_w0

Link:

https://www.unpac.me/results/56a608de-8741-41c1-9b3e-d2fe0ff0b522/

Parent samples :
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SH256 hash:

c88a66cbf00b12c88e2b970b8bc220e970e8465e56098ced24e97d42be901b94

MD5 hash:

a60401dc02ff4f3250a749965097e13f

SHA1 hash:

3f22d28fd765f831084cb972a8bd071e421c26a1

Link:

https://www.unpac.me/results/56a608de-8741-41c1-9b3e-d2fe0ff0b522/

SH256 hash:

374bad6f3adb1957f9712b996f922fbcec6262141c4189969e7c5196e0489143

MD5 hash:

85676fc557fa1e4b5a369a0df105bee3

SHA1 hash:

98d9fbcbb37ed49260cf9d0101940e884a1921e0

Link:

https://www.unpac.me/results/56a608de-8741-41c1-9b3e-d2fe0ff0b522/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

MassLogger

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/373ff5729bbb58bba6a9426b0a35c58a921be8b76a3ccf1dd9f99f410af8dddd

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