MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77. 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: 16

Intelligence 16 IOCs YARA 16 File information Comments

SHA256 hash:	9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77
SHA3-384 hash:	4b71c47b1f91d369a8b704a7e54f24b60c5b113b9d214e08d746a76ae873ebf8b1da8ef5931c0778068e468facf1cb51
SHA1 hash:	558b970f27a53518182f4a09bbad6402343db224
MD5 hash:	67ff99f3540ef234bd329e40be192b32
humanhash:	may-video-gee-social
File name:	YKBGunlukEkstre.exe
Download:	download sample
Signature	MassLogger Create hunting rule
File size:	225'792 bytes
First seen:	2025-03-07 07:23:25 UTC
Last seen:	2025-03-07 08:17:54 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	3072:HJCrYl//YDoHrVatMy8fVHqPirIc9599H4ym2UORkofs2+2uS4HQd:HJtF/Y0HruMffNfu2UOtm
TLSH	T15124E4E722AD2C21F2F97B77D2AF3B1206E2E5D5C693FF8B418514F16A0871117243A9
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
Reporter	threatcat_ch
Tags:	exe MassLogger

Intelligence

File Origin

# of uploads :

# of downloads :

457

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

YKBGunlukEkstre.exe

Verdict:

Malicious activity

Analysis date:

2025-03-07 07:23:35 UTC

Tags:

snake keylogger evasion stealer

Link:

https://app.any.run/tasks/4023189b-00c8-4614-95eb-e53c66068821

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.3196.6411.7853.UNOFFICIAL

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67caa0f7c668b65489bfa5ad

Tags:

backdoor virus msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Sending a custom TCP request

Reading critical registry keys

Creating a file

Unauthorized injection to a system process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

obfuscated packed packed packer_detected

Link:

https://www.filescan.io/uploads/67ca9f224a3011c802ca1bc3/reports/f2de3d63-783e-4a68-9e8f-33001d3cfd96/overview

Verdict:

Malicious

Labled as:

IL:Trojan.MSILZilla

Link:

https://www.hybrid-analysis.com/sample/9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77

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.

Malware family:

Snake Keylogger

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/9352a0f1-cd9d-4afd-bb50-3aad2023769b

Result

Threat name:

MSIL Logger, MassLogger RAT

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1631487

Signature

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Tries to detect the country of the analysis system (by using the IP)

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Yara detected AntiVM3

Yara detected MassLogger RAT

Yara detected MSIL Logger

Yara detected Telegram RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77/

Threat name:

ByteCode-MSIL.Trojan.Zilla

Status:

Malicious

First seen:

2025-03-07 07:24:19 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

15 of 24 (62.50%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=tx5ztcohcrreawkomovh2qgt33iqt3o2speloukkr5gewm5w7r3q._file

Verdict:

malicious

Label(s):

novastealer

Similar samples:

error

MassLogger

Result

Malware family:

n/a

Score:

7/10

Tags:

collection discovery spyware stealer

Link:

https://tria.ge/reports/250307-h8hnbawtfw/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Suspicious behavior: EnumeratesProcesses

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Verdict:

Malicious

Tags:

404keylogger

YARA:

n/a

Link:

https://app.threat.zone/submission/f3c10599-1a82-42ec-8346-7b7dadc0e8e7

Unpacked files

SH256 hash:

9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77

MD5 hash:

67ff99f3540ef234bd329e40be192b32

SHA1 hash:

558b970f27a53518182f4a09bbad6402343db224

Link:

https://www.unpac.me/results/3d6b6f3b-58ff-4f48-bf31-d5ad8119a126/

SH256 hash:

9509d94e56c00ae724f7de4639be750358911ff1f411af58a996163e941842b1

MD5 hash:

33fe2856322d4291eb48ab49b3ba16da

SHA1 hash:

2eb13d9e61ae51bbe3cd3bd81f63325f3327987b

Link:

https://www.unpac.me/results/3d6b6f3b-58ff-4f48-bf31-d5ad8119a126/

SH256 hash:

e8ebfda634e10c24642537582e256449074acdf2ac5ea827b81818c111111993

MD5 hash:

5b29dbce9331e1456dcac2b8f087dfd2

SHA1 hash:

702f2aef816d7ed31559640a56919a19c0c9cc51

Link:

https://www.unpac.me/results/3d6b6f3b-58ff-4f48-bf31-d5ad8119a126/

SH256 hash:

95a7e893c5d4fdf1e911bb4012f70198730ec6c69f6920a34cd0e14c4de26def

MD5 hash:

090397d898580d61182a1c98df074646

SHA1 hash:

b745affd9a1dc79cb8c370df02a36ac87f0a8464

Detections:

win_404keylogger_g1

win_masslogger_w0

MAL_Envrial_Jan18_1

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_TelegramChatBot

Link:

https://www.unpac.me/results/3d6b6f3b-58ff-4f48-bf31-d5ad8119a126/

Parent samples :
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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/9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77

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:	crime_snake_keylogger Create hunting rule
Author:	Rony (r0ny_123)
Description:	Detects Snake keylogger payload

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot Create hunting rule
Author:	ditekSHen
Description:	Detects executables using Telegram Chat Bot

Rule name:	MAL_Envrial_Jan18_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Encrial credential stealer malware
Reference:	https://twitter.com/malwrhunterteam/status/953313514629853184

Rule name:	MAL_Envrial_Jan18_1_RID2D8C Create hunting rule
Author:	Florian Roth
Description:	Detects Encrial credential stealer malware
Reference:	https://twitter.com/malwrhunterteam/status/953313514629853184

Rule name:	masslogger_gcch Create hunting rule
Author:	govcert_ch

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_imphash Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

Rule name:	telegram_bot_api Create hunting rule
Author:	rectifyq
Description:	Detects file containing Telegram Bot API

Rule name:	Windows_Trojan_SnakeKeylogger_af3faa65 Create hunting rule
Author:	Elastic Security

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

exe 9dfb9989c7146240594e63aa7d40d3ded109edda93c8b7514a8f4c4b33b6fc77

(this sample)

Delivery method

Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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