MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164. 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: 17


Intelligence 17 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164
SHA3-384 hash: 049eed0619fee1f4672f85e8ad69ed65403ca4630f780572fa6db30ce349b1d63abc02ed11fb46a1e630ef1cd5928755
SHA1 hash: fb016ba3030e9aff80022c08a9674ba99a1efffd
MD5 hash: 35a8b284b170cd75cd1d7db7fabd7dfd
humanhash: earth-bravo-juliet-wyoming
File name:Signed Invoice.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:784'896 bytes
First seen:2025-02-24 09:19:59 UTC
Last seen:2025-03-10 11:28:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:mMr8IX5dYeXY/e1crO8ZvULHKtSj0LkUATqs3vK7rgaDFXjMAH4s786Ztt5nvwhX:mMrbpR6JGLwSjckZTqyvKAaDF/HH7FX8
TLSH T18EF4F1946629B502C8A597B405B1F9B4673C1EEE9400E7079FEC7DDB7CB6F420E09A83
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon ae2f032b0b030b8e (9 x MassLogger, 6 x Formbook, 5 x AgentTesla)
Reporter threatcat_ch
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
3
# of downloads :
39
Origin country :
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SignedInvoice.exe
Verdict:
Malicious activity
Analysis date:
2025-02-24 09:28:12 UTC
Tags:
evasion snake keylogger telegram stealer
Link:
https://app.any.run/tasks/9eda9a09-a86f-4361-ba89-55e479e1e128

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67bc39d3a0fd713c335c96a5
Tags:
dropper shell msil
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67bc39cf6222db7f23d9c837/reports/0c9d5835-0ee4-49e2-ab54-a9442586529f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164
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/fc9b79e0-b2ff-4a9f-bd19-51e47616d774
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/1622564
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 capture screen (.Net source)
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 submitted file
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Suricata IDS alerts for network traffic
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 Snake Keylogger
Yara detected Telegram RAT
Yara detected VIP Keylogger
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1622564 Sample: Signed Invoice.exe Startdate: 24/02/2025 Architecture: WINDOWS Score: 100 22 reallyfreegeoip.org 2->22 24 api.telegram.org 2->24 26 2 other IPs or domains 2->26 34 Suricata IDS alerts for network traffic 2->34 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 44 14 other signatures 2->44 8 Signed Invoice.exe 4 2->8         started        signatures3 40 Tries to detect the country of the analysis system (by using the IP) 22->40 42 Uses the Telegram API (likely for C&C communication) 24->42 process4 file5 20 C:\Users\user\...\Signed Invoice.exe.log, ASCII 8->20 dropped 46 Adds a directory exclusion to Windows Defender 8->46 48 Injects a PE file into a foreign processes 8->48 12 Signed Invoice.exe 15 2 8->12         started        16 powershell.exe 23 8->16         started        signatures6 process7 dnsIp8 28 api.telegram.org 149.154.167.220, 443, 49753 TELEGRAMRU United Kingdom 12->28 30 checkip.dyndns.com 193.122.6.168, 49734, 49739, 49741 ORACLE-BMC-31898US United States 12->30 32 reallyfreegeoip.org 104.21.48.1, 443, 49735, 49737 CLOUDFLARENETUS United States 12->32 50 Tries to steal Mail credentials (via file / registry access) 12->50 52 Tries to harvest and steal browser information (history, passwords, etc) 12->52 54 Loading BitLocker PowerShell Module 16->54 18 conhost.exe 16->18         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164/
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2025-02-24 01:37:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uxwjoinzo223fonsclin2bjrhkkumdam62c5sflokglcxsvxmfsa._file
Result
Malware family:
vipkeylogger
Create hunting rule
Score:
  10/10
Tags:
family:vipkeylogger collection discovery execution keylogger spyware stealer
Link:
https://tria.ge/reports/250224-lawdassnew/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
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
Vipkeylogger family
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/8ae40b51-e040-4d1f-953f-0ee9debff427
Unpacked files
SH256 hash:
a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164
MD5 hash:
35a8b284b170cd75cd1d7db7fabd7dfd
SHA1 hash:
fb016ba3030e9aff80022c08a9674ba99a1efffd
Link:
https://www.unpac.me/results/0356fe98-dc64-4b37-9442-098e7b44e87e/
SH256 hash:
e80a463e16b14b43e4112cb8f0cb0cf44ff245be592202042373a02b9ea4deb9
MD5 hash:
bbea1aafd0d7058f6f46c8ceff355f96
SHA1 hash:
14ca07073c0a943129823d6532358a55761a203f
Link:
https://www.unpac.me/results/0356fe98-dc64-4b37-9442-098e7b44e87e/
SH256 hash:
4496b25adad89a121f78c91e4db64434a28f5b1c910b3f39297541e21658c3d7
MD5 hash:
adfcdf55cd0aa2761afc74d60907a31f
SHA1 hash:
c99c499f4630f73ee7d921e64fc993ed18b699c7
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/0356fe98-dc64-4b37-9442-098e7b44e87e/
SH256 hash:
527f5971e25f4cce4aae3bd06a2a7a5a7ee2cbbd020bab224e022d25059a7a1d
MD5 hash:
494d059e2017f45c12a42a683da51c37
SHA1 hash:
e0a7c52d416f4233a7ea1ee0bfe0afcaa026737f
Detections:
win_masslogger_w0
Create hunting rule
win_404keylogger_g1
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_DotNetProcHook
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Link:
https://www.unpac.me/results/0356fe98-dc64-4b37-9442-098e7b44e87e/
Parent samples :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 family:
SnakeKeylogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a5ec9721b976/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/a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164

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_DotNetProcHook
Create hunting rule
Author:ditekSHen
Description:Detects executables with potential process hoocking
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. 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 a5ec9721b976b5b2b9b212d0dd05313a95460c0cf685d9156e51962bcab76164

(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 (GUARD_CF)high

Comments