MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202
SHA3-384 hash: ceee23b4039b19aa89275be11b1d11479516d6b6417c01eeee032f58c65d67f585889c33892f82c81065bfe887196be5
SHA1 hash: b9cbb2def3503326ad2db1050944571fc73999e4
MD5 hash: 942a8123bf0cb7c594bbb09a36d0c893
humanhash: kansas-london-tennessee-don
File name:rTEKL__FTALEPVEF__YATTEKL__F___xlsx.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:679'424 bytes
First seen:2024-09-25 12:26:41 UTC
Last seen:2024-09-25 13:57:54 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:/Huj0mNmSkM+UxMRGYjCWiMhQY6Gzs6iB4ugF8tUD1N1PEDu5llnWpU:/OduMws8CWiMhQY61pB5g2tq1NBE4lnF
TLSH T129E412B19270E462F85C2BB58032E37016799F6DE062D223EFEDBDE37D71A22541A705
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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
File icon (PE):PE icon
dhash icon 4f89090c0c098d4f (21 x AgentTesla, 8 x MassLogger, 1 x VIPKeylogger)
Reporter FXOLabs
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
378
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
nTEKL_130F_TALEP_V.z
Verdict:
No threats detected
Analysis date:
2024-09-25 12:51:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e8fb2735-5730-4e91-a1a2-1d36e60494bd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Porcupine.Unclassified.268734.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66f4019956c487103d5262cb
Tags:
Banker Discovery Encryption Execution Generic Network Static Stealth Msil Dexter Underscore Infosteal
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
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
Stealing user critical data
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed redcap snakekeylogger strictor
Link:
https://www.filescan.io/uploads/66f401a4dcb7aa64740f51a1/reports/42885983-88f0-4151-8f28-798f37cd4710/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202
Result
Verdict:
SUSPICIOUS
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fafa3b76-be42-4c1f-a522-82e4f1ae4859
Result
Threat name:
Snake Keylogger, VIP Keylogger
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1518234
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus detection for URL or domain
Contains functionality to capture screen (.Net source)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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 the Telegram API (likely for C&C communication)
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Snake Keylogger
Yara detected Telegram RAT
Yara detected VIP Keylogger
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1518234 Sample: rTEKL__FTALEPVEF__YATTEKL__... Startdate: 25/09/2024 Architecture: WINDOWS Score: 100 24 reallyfreegeoip.org 2->24 26 api.telegram.org 2->26 28 2 other IPs or domains 2->28 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for URL or domain 2->40 46 13 other signatures 2->46 8 rTEKL__FTALEPVEF__YATTEKL__F___xlsx.exe 4 2->8         started        signatures3 42 Tries to detect the country of the analysis system (by using the IP) 24->42 44 Uses the Telegram API (likely for C&C communication) 26->44 process4 file5 22 rTEKL__FTALEPVEF__...L__F___xlsx.exe.log, ASCII 8->22 dropped 48 Adds a directory exclusion to Windows Defender 8->48 50 Injects a PE file into a foreign processes 8->50 12 rTEKL__FTALEPVEF__YATTEKL__F___xlsx.exe 15 2 8->12         started        16 powershell.exe 23 8->16         started        signatures6 process7 dnsIp8 30 api.telegram.org 149.154.167.220, 443, 49722 TELEGRAMRU United Kingdom 12->30 32 reallyfreegeoip.org 188.114.97.3, 443, 49703, 49704 CLOUDFLARENETUS European Union 12->32 34 checkip.dyndns.com 193.122.6.168, 49701, 49706, 49709 ORACLE-BMC-31898US United States 12->34 52 Tries to steal Mail credentials (via file / registry access) 12->52 54 Tries to harvest and steal browser information (history, passwords, etc) 12->54 56 Loading BitLocker PowerShell Module 16->56 18 WmiPrvSE.exe 16->18         started        20 conhost.exe 16->20         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202/
Threat name:
Win32.Trojan.SnakeKeylogger
Create hunting rule
Status:
Malicious
First seen:
2024-09-19 10:37:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yt6p4ikfl45kqchk7xenarkmoiaz3y5batsrr7e7awjtlng4miba._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:vipkeylogger collection discovery execution keylogger spyware stealer
Link:
https://tria.ge/reports/240925-pmq6wsvfkn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Browser Information Discovery
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
VIPKeylogger
Verdict:
Malicious
Tags:
snake_keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/3406bf25-26b8-40c2-996c-c6fd37ba6e65
Unpacked files
SH256 hash:
3dc19bf8524e6f9a9d64d45fa729c9183296838307625a553fd30befabd0a208
MD5 hash:
fbc7364b8dcb4f501299b61e7c514616
SHA1 hash:
e07658e25dc31b259aa8b7d2e1bed413bda8fbdb
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/51173434-98f5-4b85-9681-1c08260e95e2/
SH256 hash:
e1557713ec59856d00ade1994862f6995137b234626b1f61d8c7d86cd530190a
MD5 hash:
bd7ee17993181beae934effac56ef77d
SHA1 hash:
5867d7def7f2eba5767e3c524a05d5650221f339
Detections:
win_masslogger_w0
Create hunting rule
win_404keylogger_g1
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
Link:
https://www.unpac.me/results/51173434-98f5-4b85-9681-1c08260e95e2/
Parent samples :
61273d957fcca98eed2c70d8475bc6f8dc9b637246e998727f6771a915c69bb0
18a2d62cc5a151ec2c53c054572a0c762f4f7d6ed600526823a474498942a770
c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202
a0a21dd376537c79ac0be99488eef94cf21475cd98de2c6cee0094a8fd52cdc0
c3bc0f624964efbdb410648c80ed1357b28f293ce0d0c7602fcae852e37ad918
08fc3b1fd5055344609064d31139e4a8e1c26d8c5d353b1ca97b4148f03d8823
3dcbee6ee102a689e41b9198c27fceed7962f5ce3861721032898e5771087d50
fb1087f5ae803f42c462f64d69e98d93fde21279c9f0be092c38c91caa20825f
f2241314a8601e3c955f96e5923407a14adac63c7dae4c38a98e83e15a53dbde
990e32f2b58b0c11d9998695169ab6a6b0825fc2c4c70d366eb2197360875edc
7bd9596f753e58ba917ba418c191af8fcb9b537e73ee6a86989960099585394f
ba953663cd60752b2b928cbf2b34533961cca881d9d5c7cb98b7802988b89f3a
SH256 hash:
d1f4761e2e1e15fe454a70864c3aa1da7d6dc90582222bbd7e6d53d0bbee6f62
MD5 hash:
b08a9c9cb485bd7567bf062922a1e897
SHA1 hash:
3b5781fb115d06bdede80cb6ff627fde1a50d9f5
Link:
https://www.unpac.me/results/51173434-98f5-4b85-9681-1c08260e95e2/
Parent samples :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 hash:
c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202
MD5 hash:
942a8123bf0cb7c594bbb09a36d0c893
SHA1 hash:
b9cbb2def3503326ad2db1050944571fc73999e4
Link:
https://www.unpac.me/results/51173434-98f5-4b85-9681-1c08260e95e2/
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/c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202

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: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.

Malspam

MassLogger

Executable exe c4fcfe21455f3aa808eafdc8d0454c72019de3a104e518fc9f059335b4dc6202

(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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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