MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156. 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: 15


Intelligence 15 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156
SHA3-384 hash: 49cdee299076912ac3b1ef650efe78d97a71823c8013bc783e4f26e993cff57a44e1c85fc220bc0205d0b8eba79cb8cf
SHA1 hash: 0112ea8d78f5ac61fdaf084353ed5096652eb472
MD5 hash: a01453f61b348a04bb9367e78fa459a7
humanhash: monkey-twelve-ceiling-autumn
File name:904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156
Download: download sample
Signature MassLogger
Create hunting rule
File size:834'048 bytes
First seen:2025-06-10 11:34:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:TYFXfFVo3vJXTp+lrLoe5brq90dZ6RFiRdi/fAsRrToG+QtbL92tieHn:0F9Vo3vdT1+brK0dZpi/f/TtbZ2ti
Threatray 10 similar samples on MalwareBazaar
TLSH T15A05C01727F88513D8AE66B5D172C23693F0E95AA26BE74E5EC0ACF77D573008A01363
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
dhash icon d4e4f4d4d4d4d4d4 (4 x SnakeKeylogger, 3 x Formbook, 3 x MassLogger)
Reporter adrian__luca
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
422
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Quarantined Messages (1).zip
Verdict:
Malicious activity
Analysis date:
2025-05-30 01:52:20 UTC
Tags:
arch-exec attachments attc-eml attc-arch evasion stealer snake keylogger netreactor
Link:
https://app.any.run/tasks/2e71648e-3661-44ae-8db7-cec2dd3a8abd

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/8796/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6848184307b5e8c1cfe618f2
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/88d5475f-b24c-4c85-ade0-acf1619836b4
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/1710811
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
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
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
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: 1710811 Sample: b0BNKKbtXf.exe Startdate: 10/06/2025 Architecture: WINDOWS Score: 100 46 reallyfreegeoip.org 2->46 48 checkip.dyndns.org 2->48 50 checkip.dyndns.com 2->50 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Sigma detected: Scheduled temp file as task from temp location 2->60 64 10 other signatures 2->64 8 b0BNKKbtXf.exe 7 2->8         started        12 zTiPLjNQ.exe 5 2->12         started        signatures3 62 Tries to detect the country of the analysis system (by using the IP) 46->62 process4 file5 38 C:\Users\user\AppData\Roaming\zTiPLjNQ.exe, PE32 8->38 dropped 40 C:\Users\...\zTiPLjNQ.exe:Zone.Identifier, ASCII 8->40 dropped 42 C:\Users\user\AppData\Local\...\tmpB509.tmp, XML 8->42 dropped 44 C:\Users\user\AppData\...\b0BNKKbtXf.exe.log, ASCII 8->44 dropped 66 Uses schtasks.exe or at.exe to add and modify task schedules 8->66 68 Adds a directory exclusion to Windows Defender 8->68 70 Injects a PE file into a foreign processes 8->70 14 powershell.exe 23 8->14         started        17 powershell.exe 21 8->17         started        19 b0BNKKbtXf.exe 15 2 8->19         started        22 schtasks.exe 1 8->22         started        72 Multi AV Scanner detection for dropped file 12->72 74 Uses threadpools to delay analysis 12->74 24 zTiPLjNQ.exe 12->24         started        26 schtasks.exe 12->26         started        signatures6 process7 dnsIp8 76 Loading BitLocker PowerShell Module 14->76 28 conhost.exe 14->28         started        30 WmiPrvSE.exe 14->30         started        32 conhost.exe 17->32         started        52 checkip.dyndns.com 158.101.44.242, 49687, 49690, 80 ORACLE-BMC-31898US United States 19->52 54 reallyfreegeoip.org 104.21.16.1, 443, 49688, 49693 CLOUDFLARENETUS United States 19->54 34 conhost.exe 22->34         started        78 Tries to steal Mail credentials (via file / registry access) 24->78 80 Tries to harvest and steal browser information (history, passwords, etc) 24->80 36 conhost.exe 26->36         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-05-30 13:08:10 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=sbf7bhiv5dkq7uhkfdlb5ye5iwjptgsw6mg4pougaoeg6a6y4fla._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
novastealer
Create hunting rule
Similar samples:
1903dce033676f84e6b620f75e6e8d58a010efd0eac87b550b2d4a573a1161c6
MassLogger
31e7d9343c6377ee6bdd387b613b77423e25f9983b612903b86ec5361b41e7a9
MassLogger
44364cc9748a4faccf19645db786945831fec60aae58f10dfb002ab439479f1b
MassLogger
8be603d66148c712db208a6a43f50306ff49d1964b66d43545eb73379d777374
MassLogger
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250610-nphrvsdm5x/
Behaviour
Scheduled Task/Job: Scheduled Task
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
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
MassLogger
Masslogger family
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/ca9f09ec-da11-4a43-af84-6b72e96e52f1
Unpacked files
SH256 hash:
904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156
MD5 hash:
a01453f61b348a04bb9367e78fa459a7
SHA1 hash:
0112ea8d78f5ac61fdaf084353ed5096652eb472
Link:
https://www.unpac.me/results/628a5c56-1e7f-49fe-8784-e9fbb6eeef9a/
SH256 hash:
ff55838cf83322ceab30a512da916f2821181007e95c8fa68674825df8c819b4
MD5 hash:
c9d09ec2449e60042cfc5222e0905ac9
SHA1 hash:
00f21d00230d6595f91ea5c990910f86bbfa44b1
Link:
https://www.unpac.me/results/628a5c56-1e7f-49fe-8784-e9fbb6eeef9a/
SH256 hash:
f5e4d6c5a7b58142343f988dda60bc63dea831a6163eb75227883823de2f0b05
MD5 hash:
f01200012700f8889a380160679736d8
SHA1 hash:
627669310bd56b85571c3afd5b2fecfd294e80ad
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
Link:
https://www.unpac.me/results/628a5c56-1e7f-49fe-8784-e9fbb6eeef9a/
Parent samples :
437e24f725da34880aff70e325ba26ccc293a62cbe1c1289c7cc71c6402b399c
47a27187c6e5493385de929ef9a55f0be39375e1854cd846ec04f440bcc5ce19
733afb80ae605c51644e1cb0e5aaefbdc355ecba2513400ee9603de115a86be9
6c72b48a43aee3bb58a5c7de230177d66034af89078b4431706303f27968c088
904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156
SH256 hash:
7a30147562890cb7e1c43bd2b7933f8c07a4672c4ea14da47974cce0568c01b8
MD5 hash:
fc56f8a9134679240add833ce582d4b3
SHA1 hash:
8179cbf5ea8f22937faad932f1eef0ab7752eabe
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/628a5c56-1e7f-49fe-8784-e9fbb6eeef9a/
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/904bf09d15e8d50fd0ea28d61ee09d4592f99a56f30dc7ba8603886f03d8e156

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.

Cape
Cape
https://www.capesandbox.com/analysis/8796/

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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