MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76. 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 4 File information Comments
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SHA256 hash: 3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
SHA3-384 hash: 256f775a04d998a9a5fac8c43369554d5d5fb6488556db62dbad0f39d017aca4ddc1e169755a3c34634d16f493542fd9
SHA1 hash: c59ced2bd210bd4369ad5039ba38eba5e7052af6
MD5 hash: e3480bb81aa154901b3113af7488cc8c
humanhash: massachusetts-stairway-music-mississippi
File name:3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
Download: download sample
Signature MassLogger
Create hunting rule
File size:920'576 bytes
First seen:2025-06-10 09:45:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:cIGiFA29QfwZsg65T86qMuLMIqOhRjCQoDen2PNwUR9eEIzH1A9BMJhCxseA7ijK:cJl5nHECHlFwUR9ubC9xxp3
Threatray 1 similar samples on MalwareBazaar
TLSH T149152B2530FB1256C472E7E30BDBF9B68BBEF172612DF539299312C647A4F019982136
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 adrian__luca
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
Verdict:
Malicious activity
Analysis date:
2025-06-10 15:03:41 UTC
Tags:
snake keylogger evasion stealer ims-api generic
Link:
https://app.any.run/tasks/74fc8a53-6004-40c4-9b11-a209bb4cfadb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/8586/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3148.7522.10359.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6847feed07b5e8c1cfe610c2
Tags:
virus smtp msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Creating a process with a hidden window
Restart of the analyzed sample
Creating a file
Creating a file in the %temp% directory
Creating a process from a recently created file
DNS request
Connection attempt
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f8382c69-9489-4f33-996c-c7df9bd7052b
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1710679
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
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)
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1710679 Sample: z1au83jlgR.exe Startdate: 10/06/2025 Architecture: WINDOWS Score: 100 39 reallyfreegeoip.org 2->39 41 checkip.dyndns.org 2->41 43 checkip.dyndns.com 2->43 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Multi AV Scanner detection for submitted file 2->57 61 10 other signatures 2->61 8 z1au83jlgR.exe 4 2->8         started        12 svchost.exe 2->12         started        signatures3 59 Tries to detect the country of the analysis system (by using the IP) 39->59 process4 dnsIp5 33 C:\Users\user\AppData\...\z1au83jlgR.exe.log, ASCII 8->33 dropped 71 Adds a directory exclusion to Windows Defender 8->71 73 Injects a PE file into a foreign processes 8->73 75 Uses threadpools to delay analysis 8->75 15 z1au83jlgR.exe 3 8->15         started        18 powershell.exe 23 8->18         started        21 z1au83jlgR.exe 8->21         started        49 127.0.0.1 unknown unknown 12->49 file6 signatures7 process8 file9 35 C:\Users\user\AppData\Local\Temp\newnew.exe, PE32 15->35 dropped 37 C:\Users\user\AppData\Local\Temp\ROLLS.exe, PE32 15->37 dropped 23 ROLLS.exe 14 2 15->23         started        26 newnew.exe 15 2 15->26         started        51 Loading BitLocker PowerShell Module 18->51 29 conhost.exe 18->29         started        31 WmiPrvSE.exe 18->31         started        signatures10 process11 dnsIp12 63 Antivirus detection for dropped file 23->63 65 Multi AV Scanner detection for dropped file 23->65 67 Tries to steal Mail credentials (via file / registry access) 23->67 69 Tries to harvest and steal browser information (history, passwords, etc) 23->69 45 checkip.dyndns.com 132.226.247.73, 49681, 49682, 80 UTMEMUS United States 26->45 47 reallyfreegeoip.org 104.21.48.1, 443, 49683, 49684 CLOUDFLARENETUS United States 26->47 signatures13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76/
Threat name:
ByteCode-MSIL.Trojan.Crysan
Create hunting rule
Status:
Malicious
First seen:
2025-05-27 13:10:49 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hvmtotk6kcjqkoxdoadqmgvq2f6jmtka22ixgrnrmkwmem2lhz3a._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
novastealer
Create hunting rule
Similar samples:
error
MassLogger
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery evasion execution spyware stealer trojan
Link:
https://tria.ge/reports/250610-lrpl3sszbs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
MassLogger
Masslogger family
Modifies Windows Defender DisableAntiSpyware settings
Malware Config
C2 Extraction:
https://api.telegram.org/bot7944442205:AAGz48g2hOFFQ3_Ieaxuh08zFVzSCec2-xA/sendMessage?chat_id=8008584601
https://api.telegram.org/bot7626939566:AAF7aLEqxRPkTJ__rK5VZGmqIrS4FLG2djw/sendMessage?chat_id=805410216
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8fbe8162-ff54-4f9f-898d-2b249b8abad9
Unpacked files
SH256 hash:
3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
MD5 hash:
e3480bb81aa154901b3113af7488cc8c
SHA1 hash:
c59ced2bd210bd4369ad5039ba38eba5e7052af6
Link:
https://www.unpac.me/results/e885c536-3924-44ed-a683-e331e0e8a02c/
SH256 hash:
a4002a41088aba3178c8779a4388f40896543f0d5694562729e66f5e4dd899fd
MD5 hash:
6e0c8d849a1ae2b9cfa9ea70e7a0cd57
SHA1 hash:
24a5e2eea493aafd31f48b0b93e534aaf757db4f
Link:
https://www.unpac.me/results/e885c536-3924-44ed-a683-e331e0e8a02c/
SH256 hash:
2dda5bb915878cc5958298d8a09608b9aece0f918b01485dae18a47540e007df
MD5 hash:
2d65eb77f7107cbec96aa209c10b2dbd
SHA1 hash:
3177d4b7b74635644bb5a701457c3ea2f66f9ee0
Detections:
win_404keylogger_g1
Create hunting rule
win_masslogger_w0
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Create hunting rule
Link:
https://www.unpac.me/results/e885c536-3924-44ed-a683-e331e0e8a02c/
Parent samples :
ac1a878f82a993c57511f7c556f48388de5e335e6402b42de6b27dad022acf4f
eade91a91cfb37da846b62e7b1d25060446ebffaa32f119b844276c0bb28b5ff
3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
SH256 hash:
6f3dc14d124404fa819b5e63a4df8b0ed527ac6509cc05c786d2c1132fefc182
MD5 hash:
73e1b44218b4ff80adc77165407d72f8
SHA1 hash:
7b467cf8f250687920213af1843673692e1f9deb
Detections:
win_404keylogger_g1
Create hunting rule
win_masslogger_w0
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Create hunting rule
Link:
https://www.unpac.me/results/e885c536-3924-44ed-a683-e331e0e8a02c/
Parent samples :
ac1a878f82a993c57511f7c556f48388de5e335e6402b42de6b27dad022acf4f
eade91a91cfb37da846b62e7b1d25060446ebffaa32f119b844276c0bb28b5ff
3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76
SH256 hash:
549fe8a7be3163b227d5e1ee8156acee8018f2b82ef1a7b7225649b776a94ba1
MD5 hash:
45e10e0074b53da734330e0163713e1e
SHA1 hash:
aa7f434c5cc05c3f9d0ed51bc48b07a57089c694
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/e885c536-3924-44ed-a683-e331e0e8a02c/
Malware family:
PrivateLogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3d59374d5e50/report/overview.html
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/3d59374d5e5093053ae37007061ab0d17c964d40d6917345b162acc2334b3e76

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/8586/

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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