MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e99b25add2af69e02e6f262a74607e9b2de50ef1be4a27a801100513160cda23. 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 5 File information Comments

SHA256 hash: e99b25add2af69e02e6f262a74607e9b2de50ef1be4a27a801100513160cda23
SHA3-384 hash: 45082e454c5e8a62e6a272704abc4bb4591da265b249084f47b971452fee0c2422fb6e8b98699089cfb825b1d359e612
SHA1 hash: d87afbb900644bbff26d09dbb3391c813247f61c
MD5 hash: a73cd22d314012209fc5b4d091159457
humanhash: autumn-romeo-four-two
File name:RFQ_pdf.exe
Download: download sample
Signature MassLogger
File size:602'112 bytes
First seen:2025-02-13 07:39:14 UTC
Last seen:2025-02-13 09:04:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:31HH/DneK/3+f4z3po8/+W/CBcD3OuIHKI6znVIJp:3JHze+ZDCBQkCb
Threatray 4'534 similar samples on MalwareBazaar
TLSH T19ED4E1D43B26E71ACD655A30CA35EEB552A91DACB001B9F36FDD3B4BB8AD1015A0CF01
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
File icon (PE):PE icon
dhash icon 7474f4b470c4ecc0 (6 x Formbook, 4 x AgentTesla, 3 x VIPKeylogger)
Reporter lowmal3
Tags:exe MassLogger

Intelligence


File Origin
# of uploads :
2
# of downloads :
431
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
tmp2tgeaqe5
Verdict:
Malicious activity
Analysis date:
2025-02-13 04:58:57 UTC
Tags:
snake keylogger evasion stealer smtp

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Tags:
keylog msil word
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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
Setting a global event handler for the keyboard
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated packed packed packer_detected
Result
Verdict:
UNKNOWN
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
Verdict:
Malicious
Result
Threat name:
MassLogger RAT
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
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
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
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)
Yara detected AntiVM3
Yara detected MassLogger RAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1614055 Sample: RFQ_pdf.exe Startdate: 13/02/2025 Architecture: WINDOWS Score: 100 24 reallyfreegeoip.org 2->24 26 Mail.bethesdakindergarten.com 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 / Scanner detection for submitted sample 2->40 44 10 other signatures 2->44 8 RFQ_pdf.exe 4 2->8         started        signatures3 42 Tries to detect the country of the analysis system (by using the IP) 24->42 process4 file5 22 C:\Users\user\AppData\...\RFQ_pdf.exe.log, ASCII 8->22 dropped 46 Adds a directory exclusion to Windows Defender 8->46 48 Injects a PE file into a foreign processes 8->48 12 RFQ_pdf.exe 15 2 8->12         started        16 powershell.exe 23 8->16         started        signatures6 process7 dnsIp8 30 Mail.bethesdakindergarten.com 111.235.137.78, 49714, 587 VODIEN-AS-AP-LOC2VodienInternetSolutionsPteLtdSG Singapore 12->30 32 checkip.dyndns.com 193.122.6.168, 49709, 80 ORACLE-BMC-31898US United States 12->32 34 reallyfreegeoip.org 104.21.80.1, 443, 49710 CLOUDFLARENETUS United States 12->34 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 WmiPrvSE.exe 16->18         started        20 conhost.exe 16->20         started        signatures9 process10
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection discovery execution spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection 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
Downloads MZ/PE file
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Unpacked files
SH256 hash:
e99b25add2af69e02e6f262a74607e9b2de50ef1be4a27a801100513160cda23
MD5 hash:
a73cd22d314012209fc5b4d091159457
SHA1 hash:
d87afbb900644bbff26d09dbb3391c813247f61c
SH256 hash:
2f348ba9fd53097bbc248466e0faf0e8b40033d1117a370b5d61a7ced8e822ef
MD5 hash:
b77f2a71f62d491cf2c3e488de6148c5
SHA1 hash:
1713cb5880a1d48283968c80ff6b75c4032e0ba2
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24 SUSP_OBF_NET_Reactor_Indicators_Jan24
SH256 hash:
17374c9c39ff88480bd3ff58d3615dd97022e0cade631176f2c400d7f135d653
MD5 hash:
a2cc6aa6c602ec448fd60552a23071b9
SHA1 hash:
a9526dcb51c0d828e5819b45e7a3cc77efe9e8da
Detections:
win_404keylogger_g1 win_masslogger_w0 MAL_Envrial_Jan18_1 INDICATOR_SUSPICIOUS_Binary_References_Browsers INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

MassLogger

Executable exe e99b25add2af69e02e6f262a74607e9b2de50ef1be4a27a801100513160cda23

(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