MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094
SHA3-384 hash: 52877ffd45661eb6092b545be3ea6e604b663b34fe2b567af3ba547e22d8cffc75e3b54c37349067dd66662786cad939
SHA1 hash: 902f45dece366be06a604d8d2e46b7942ab65027
MD5 hash: 877d0c4a012b6bdf8208e9b051c7b32a
humanhash: fifteen-music-cardinal-eighteen
File name:Vesses Information_pdf.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:515'584 bytes
First seen:2025-03-10 13:37:46 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 12288:BfCLfzW/I8B8jV8FDDlPZzyL9if0UCABKK8gnzQCaFD/f:EfC/OVknTywRCA4KiH
TLSH T1D9B4F1587A5DDF21CEA947F00922E63203B95F5EE461D35A8DEEECF73021B562844B83
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 James_inthe_box
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
620
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Vesses Information_pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-03-11 02:53:39 UTC
Tags:
snake keylogger evasion stealer
Link:
https://app.any.run/tasks/9eb2694b-acd9-4b39-9976-12fae8f2f68e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67cef50b1f777fe30608b19c
Tags:
underscore extens micro shell
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:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094
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.
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/1633728
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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: 1633728 Sample: Vesses Information_pdf.exe Startdate: 10/03/2025 Architecture: WINDOWS Score: 100 48 reallyfreegeoip.org 2->48 50 checkip.dyndns.org 2->50 52 checkip.dyndns.com 2->52 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus / Scanner detection for submitted sample 2->64 68 14 other signatures 2->68 8 Vesses Information_pdf.exe 7 2->8         started        12 invFHwlUF.exe 5 2->12         started        signatures3 66 Tries to detect the country of the analysis system (by using the IP) 48->66 process4 file5 40 C:\Users\user\AppData\Roaming\invFHwlUF.exe, PE32 8->40 dropped 42 C:\Users\...\invFHwlUF.exe:Zone.Identifier, ASCII 8->42 dropped 44 C:\Users\user\AppData\Local\...\tmp3FC1.tmp, XML 8->44 dropped 46 C:\Users\...\Vesses Information_pdf.exe.log, ASCII 8->46 dropped 70 Adds a directory exclusion to Windows Defender 8->70 72 Injects a PE file into a foreign processes 8->72 14 powershell.exe 23 8->14         started        17 powershell.exe 23 8->17         started        19 Vesses Information_pdf.exe 15 2 8->19         started        22 schtasks.exe 1 8->22         started        74 Antivirus detection for dropped file 12->74 76 Multi AV Scanner detection for dropped file 12->76 24 invFHwlUF.exe 12->24         started        26 schtasks.exe 12->26         started        28 svchost.exe 12->28         started        signatures6 process7 dnsIp8 78 Loading BitLocker PowerShell Module 14->78 30 conhost.exe 14->30         started        32 WmiPrvSE.exe 14->32         started        34 conhost.exe 17->34         started        54 checkip.dyndns.com 132.226.8.169, 49682, 49684, 80 UTMEMUS United States 19->54 56 reallyfreegeoip.org 104.21.16.1, 443, 49683, 49685 CLOUDFLARENETUS United States 19->56 36 conhost.exe 22->36         started        80 Tries to steal Mail credentials (via file / registry access) 24->80 82 Tries to harvest and steal browser information (history, passwords, etc) 24->82 38 conhost.exe 26->38         started        58 127.0.0.1 unknown unknown 28->58 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-03-10 11:22:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uab3c7mamxlr4jntyyjfm5yt4z6fjwz52m46bzfc4cvf77edmcka._file
Verdict:
malicious
Label(s):
novastealer
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
error
MassLogger
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250310-qxe22swq18/
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
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/ed2a4ca4-3cba-4571-a680-76f35aa08e63
Unpacked files
SH256 hash:
a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094
MD5 hash:
877d0c4a012b6bdf8208e9b051c7b32a
SHA1 hash:
902f45dece366be06a604d8d2e46b7942ab65027
Link:
https://www.unpac.me/results/23fd5392-c2f5-4af7-87c3-d1e6d1508d7a/
SH256 hash:
6f0ba4f0e3a40f9bb1b63915cd1bcd5c55e586b2b797c6982c26099887c15a03
MD5 hash:
7a8b7b51655a721e63686dd33cfdb6ec
SHA1 hash:
04a243f5846b92ff9635b5f67929e34bbece53d1
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/23fd5392-c2f5-4af7-87c3-d1e6d1508d7a/
Parent samples :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 hash:
1ae70e9920316346f39648486fe46b70ea00f90b9595cfc0a78958cee45b9224
MD5 hash:
f0884d03aca538d5f2b208d9aaf7874c
SHA1 hash:
132212e8a27c756ae62d926f6b62c91e226e768a
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/23fd5392-c2f5-4af7-87c3-d1e6d1508d7a/
Parent samples :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 hash:
895216f4934fd1ee8227621a28a610f85459be376988a4fafe0c85a14e2e9582
MD5 hash:
f7c61ff5d71d399ea0ca8067c73fd9ee
SHA1 hash:
2a73ef73cd6cf16f1a76cd1965233ea64c2d6e9e
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/23fd5392-c2f5-4af7-87c3-d1e6d1508d7a/
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/a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094

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: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.

Malspam

MassLogger

Executable exe a003b17d8065d71e25b3c612567713e67c54db3dd339e0e4a2e0aa5ffc836094

(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

Comments