MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d. 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: 14


Intelligence 14 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
SHA3-384 hash: e86b7669749f12d31e4a665f4c422ce04869c5f5bc4901b257f752554231897702dee04cf5c2fc5deaf55e797cd50b2a
SHA1 hash: b46d63463d4e8bcf2b6891a420ff3b51dd9f652b
MD5 hash: 5a057d673014ae11d0ab452d70f0a07b
humanhash: avocado-kilo-salami-sink
File name:263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
Download: download sample
Signature MassLogger
Create hunting rule
File size:1'357'312 bytes
First seen:2025-04-08 07:20:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:BeBD2PLZS4QWBqdIty/zTbLiJ9mgWTwmJtIwrEz1+mA1PWebPmr7fGuSefnR4tAC:q2zZNQMq+tmnLiKBIwrEz1olxbPmr7OU
TLSH T1F655F101A7E8C769E6EE1B75A47106044BF4E58BF57BCB4E1984A0FA0C437149E2A37F
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 :
401
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
Verdict:
Malicious activity
Analysis date:
2025-04-08 07:54:50 UTC
Tags:
snake keylogger evasion stealer ims-api generic
Link:
https://app.any.run/tasks/66ccf73e-32fd-45c9-8c57-55c99473722c

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/1258/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f4cf7fe011fe619fad0d7b
Tags:
autorun crysan
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %AppData% directory
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 window
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67f4ce712d430c849e0c548b/reports/a6caa0c7-5151-45a1-9db0-c89a8c6a4621/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2266f9c0-246b-41bc-9607-9867ac7576ef
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1659014
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops VBS files to the startup folder
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1659014 Sample: NIL9lqTEFX.exe Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 29 reallyfreegeoip.org 2->29 31 checkip.dyndns.org 2->31 33 checkip.dyndns.com 2->33 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 47 10 other signatures 2->47 8 NIL9lqTEFX.exe 5 2->8         started        12 wscript.exe 1 2->12         started        signatures3 45 Tries to detect the country of the analysis system (by using the IP) 29->45 process4 file5 23 C:\Users\user\AppData\Roaming\HelpLink.exe, PE32 8->23 dropped 25 C:\Users\user\AppData\...\HelpLink.vbs, ASCII 8->25 dropped 27 C:\Users\...\HelpLink.exe:Zone.Identifier, ASCII 8->27 dropped 53 Drops VBS files to the startup folder 8->53 55 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->55 14 InstallUtil.exe 15 2 8->14         started        57 Windows Scripting host queries suspicious COM object (likely to drop second stage) 12->57 18 HelpLink.exe 2 12->18         started        signatures6 process7 dnsIp8 35 checkip.dyndns.com 193.122.130.0, 49692, 49693, 80 ORACLE-BMC-31898US United States 14->35 37 reallyfreegeoip.org 104.21.80.1, 443, 49699, 49700 CLOUDFLARENETUS United States 14->37 59 Tries to steal Mail credentials (via file / registry access) 14->59 61 Antivirus detection for dropped file 18->61 63 Multi AV Scanner detection for dropped file 18->63 20 InstallUtil.exe 2 18->20         started        signatures9 process10 signatures11 49 Tries to steal Mail credentials (via file / registry access) 20->49 51 Tries to harvest and steal browser information (history, passwords, etc) 20->51
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d/
Threat name:
ByteCode-MSIL.Trojan.PureLogStealer
Create hunting rule
Status:
Malicious
First seen:
2025-03-22 17:08:01 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
24 of 36 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eyzqhsqauasfptwoft5u6hgxelagfo2sv3rhhs3izsczysegtewq._file
Verdict:
malicious
Label(s):
novastealer
Create hunting rule
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection discovery
Link:
https://tria.ge/reports/250408-h6seqszpv6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Drops startup file
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/1e6d45d5-9aa0-46cf-9571-ad6b9a8dc51c
Unpacked files
SH256 hash:
263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
MD5 hash:
5a057d673014ae11d0ab452d70f0a07b
SHA1 hash:
b46d63463d4e8bcf2b6891a420ff3b51dd9f652b
Link:
https://www.unpac.me/results/12edc1df-99e8-4491-a55c-65c29aaa35a6/
SH256 hash:
689da35a70d2733f60ceb590119385c2e67d5f5f64c21a0d7cd7c35b98747fb8
MD5 hash:
421acb80eda55341f4d99c35c5f08cb4
SHA1 hash:
099c37db0a9e18efa82cd6a740aeaabd3dcfd9ae
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/12edc1df-99e8-4491-a55c-65c29aaa35a6/
SH256 hash:
78f73e1734daa918b253517c75971fbb8df773a3d77d02a752e9a0ad1711a677
MD5 hash:
f9d2985aa1c41cca281321fffb5ed424
SHA1 hash:
3a7a58d2dcae2762882357ae34d372744b1dbb9d
Link:
https://www.unpac.me/results/12edc1df-99e8-4491-a55c-65c29aaa35a6/
SH256 hash:
76388f231839b917ce69aa34c7698bf4646e2f3396f03893fc83a94095a94c3f
MD5 hash:
7e7e2bd08c89efb07014ad10b9f9b46e
SHA1 hash:
3ee3e8a3646b71c76664bff02a7365a984ee584a
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/12edc1df-99e8-4491-a55c-65c29aaa35a6/
Parent samples :
34f6133cf583cb11933a78536f75971e5cc8d2c007d0a08b00eebbcd4efd912a
263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d
c36b9e0be5e1181187dc35b3a996794be27e352c348e18628b5ac9c2f46437d0
7112b89229b34db262e860266c233579f50b190e83d638d2c151eeb49bb57002
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/12edc1df-99e8-4491-a55c-65c29aaa35a6/
SH256 hash:
4e43e40947155b5adc5723299e0badc36902c79c46376f6305f7c2960bd42832
MD5 hash:
91be3d210cb993e0d20cb4b6a9cfd1fb
SHA1 hash:
a1000a3efc2be8aa4232f9518a4c608a576f1457
Link:
https://www.unpac.me/results/12edc1df-99e8-4491-a55c-65c29aaa35a6/
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/263303ca00a02457cece2cfb4f1cd722c062bb52aee273cb68cc859c4886992d

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/1258/

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 (GUARD_CF)high

Comments