MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98. 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: 19


Intelligence 19 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98
SHA3-384 hash: 8d9caf35e7635996647d1a9dcb4c0493f11862a3ac6d8a6a1b017dad8d3f06913f2bd25f406a73cbdc12e9bfe4b7dab9
SHA1 hash: cdd423c493e98915a9f2cea1548fa8ac3c0e576b
MD5 hash: 3ea5dc223fef0d8d959f3be548c4be64
humanhash: victor-pasta-oxygen-grey
File name:BL7258264260.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:581'632 bytes
First seen:2025-09-25 07:53:36 UTC
Last seen:2025-10-09 14:52:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:HNhqhqh3k1EBQS4NLbXeOSM6gAdprPNoJxViBS3d+CcF:HNhqhqhnBWLb/S51ZNoJxM
TLSH T1CAC40155325AEC03C45A1FF90970D7B503784E9CE421E3A78EF6BCE7B8B9B462940287
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter cocaman
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
129
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BL7258264260.exe
Verdict:
Malicious activity
Analysis date:
2025-09-25 07:59:54 UTC
Tags:
evasion auto-sch-xml snake keylogger stealer ims-api generic
Link:
https://app.any.run/tasks/a80aea44-c5a3-43db-a0ee-75fa45c6cf60

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/28941/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d54dcccc9425144151df20
Tags:
micro spawn shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
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
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68d4f5f174e5a28989928713/reports/cc8981ce-027b-4d1c-9e37-5136bf5eb88e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-25T00:44:00Z UTC
Last seen:
2025-09-25T00:44:00Z UTC
Hits:
~1000
Detections:
Trojan-PSW.Win32.Stealer.sb Trojan.MSIL.Inject.sb PDM:Trojan.Win32.Generic HEUR:Trojan-Spy.MSIL.Noon.gen Trojan.MSIL.Taskun.sb Trojan-PSW.Win32.Stelega.sb Trojan.MSIL.Crypt.sb HEUR:Trojan.MSIL.Taskun.sb VHO:Trojan-PSW.Win32.Stealer.gen Trojan-Spy.MSIL.BPLogger.sb HEUR:Trojan.MSIL.Agent.gen
Link:
https://opentip.kaspersky.com/55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98/results?tab=lookup
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d98184a3-c58f-4d93-a4cb-3e73f9ca03fa
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/1783816
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.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
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: 1783816 Sample: BL7258264260.exe Startdate: 25/09/2025 Architecture: WINDOWS Score: 100 49 reallyfreegeoip.org 2->49 51 cphost14.qhoster.net 2->51 53 2 other IPs or domains 2->53 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 Sigma detected: Scheduled temp file as task from temp location 2->73 77 11 other signatures 2->77 8 BL7258264260.exe 7 2->8         started        12 UxVFAAH.exe 5 2->12         started        14 svchost.exe 2->14         started        signatures3 75 Tries to detect the country of the analysis system (by using the IP) 49->75 process4 dnsIp5 41 C:\Users\user\AppData\Roaming\UxVFAAH.exe, PE32 8->41 dropped 43 C:\Users\user\...\UxVFAAH.exe:Zone.Identifier, ASCII 8->43 dropped 45 C:\Users\user\AppData\Local\Temp\tmpE28.tmp, XML 8->45 dropped 47 C:\Users\user\...\BL7258264260.exe.log, ASCII 8->47 dropped 79 Uses schtasks.exe or at.exe to add and modify task schedules 8->79 81 Adds a directory exclusion to Windows Defender 8->81 83 Injects a PE file into a foreign processes 8->83 17 powershell.exe 23 8->17         started        20 powershell.exe 23 8->20         started        22 BL7258264260.exe 15 2 8->22         started        25 schtasks.exe 1 8->25         started        85 Multi AV Scanner detection for dropped file 12->85 27 UxVFAAH.exe 12->27         started        29 schtasks.exe 12->29         started        61 127.0.0.1 unknown unknown 14->61 file6 signatures7 process8 dnsIp9 63 Loading BitLocker PowerShell Module 17->63 31 conhost.exe 17->31         started        33 WmiPrvSE.exe 17->33         started        35 conhost.exe 20->35         started        55 cphost14.qhoster.net 78.110.166.82, 49687, 49688, 587 UKSERVERS-ASUKDedicatedServersHostingandCo-Location United Kingdom 22->55 57 checkip.dyndns.com 158.101.44.242, 49683, 49685, 80 ORACLE-BMC-31898US United States 22->57 59 reallyfreegeoip.org 104.21.67.152, 443, 49684, 49686 CLOUDFLARENETUS United States 22->59 37 conhost.exe 25->37         started        65 Tries to steal Mail credentials (via file / registry access) 27->65 67 Tries to harvest and steal browser information (history, passwords, etc) 27->67 39 conhost.exe 29->39         started        signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.36 Win 32 Exe x86
Link:
https://app.malva.re/file/3ea5dc223fef0d8d959f3be548c4be64
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98/
Verdict:
Malicious
Threat:
Family.SNAKE
Link:
https://tip.neiki.dev/file/55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98
Threat name:
Win32.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2025-09-25 03:43:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
22 of 24 (91.67%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kxccav2sk3x6avgj4araf7hi4rkawyxf4655l6zewjpp7w667wma._file
Verdict:
malicious
Label(s):
novastealer
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
error
MassLogger
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery execution persistence spyware stealer
Link:
https://tria.ge/reports/250925-js7g6stwct/
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
Malware Config
C2 Extraction:
https://api.telegram.org/bot8249574412:AAEYI1aKTMsQBYXH4o8C5XnXqiv65jV2kC8/sendMessage?chat_id=6488172735
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d7e0d6b1-b41c-4f54-ab5d-375b24a527c1
Unpacked files
SH256 hash:
55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98
MD5 hash:
3ea5dc223fef0d8d959f3be548c4be64
SHA1 hash:
cdd423c493e98915a9f2cea1548fa8ac3c0e576b
Link:
https://www.unpac.me/results/1b8fc9cf-23b4-4053-ae11-94ecf3358ff1/
SH256 hash:
889ec14703f1c17652244d66c857df1da8848da497651ba2d3308488b292a1a5
MD5 hash:
d5cde7b39c93212e3faa702e349c5e3f
SHA1 hash:
08f98762af837078675bbf6b2c540761b9dda162
Link:
https://www.unpac.me/results/1b8fc9cf-23b4-4053-ae11-94ecf3358ff1/
SH256 hash:
1811da9b606c8398b310d1c84ef0ce734008d4c17eb4d1dd9730161b94202ef5
MD5 hash:
2be90ac64f46f9062b5cf0df2cf54d8d
SHA1 hash:
33f3257746581cb604d8c2f42519672a2b7cbd61
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/1b8fc9cf-23b4-4053-ae11-94ecf3358ff1/
SH256 hash:
1db610d2c92d87b075e5faf5177278c2e4687b18dbde969f3fbd40ff6f5dc1e2
MD5 hash:
12d2850335264aa3685ee30233b505c2
SHA1 hash:
3ea77fa13b3b56c500b598511b24bcc61ae32f71
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/1b8fc9cf-23b4-4053-ae11-94ecf3358ff1/
Parent samples :
cb2067c738b449d76478d847f8ecf7025835c61612153a48d68cfa00283498f8
55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98
Malware family:
PrivateLogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/55c420575256/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/55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:crime_snake_keylogger
Create hunting rule
Author:Rony (r0ny_123)
Description:Detects Snake keylogger payload
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
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_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(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

rar 0dd31a072dcdbea17bbc5f70f034e7a65883b133117e3c81d539f4cbd0b96c13

MassLogger

Executable exe 55c420575256efe054c9e02202fce8e4540b62e5e7bbd5fb24b25effdbdefd98

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 0dd31a072dcdbea17bbc5f70f034e7a65883b133117e3c81d539f4cbd0b96c13
  
Dropped by
MD5 e3ce84950e5185390ab5a5965335c80f
Cape
Cape
https://www.capesandbox.com/analysis/28941/

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