MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668
SHA3-384 hash: 999300c5bbb8dfa40e5633c1ecff151a2254eb4d04eff28f30f147b804df30f5845d4505466eedcae528af537496d26c
SHA1 hash: e9f98a275be6450e6fdc69ff6eaa8960556c6931
MD5 hash: 78274b767c340fec8de8e040cc86ba0d
humanhash: cola-network-jupiter-kentucky
File name:Payment Advice-6400usd_pdf.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:689'152 bytes
First seen:2025-05-06 08:57:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:tMA+/Aox9ZK2PT0gx5+z8FdkeiRU60qDiZlX2u3otFbXvx4RkJ15:uApox9ZL5MoFSe60qmZlvotZX54Kz
Threatray 1'270 similar samples on MalwareBazaar
TLSH T127E4124CF718BBA2CB541FBAC943930882B18A37E636F65314E559C74F68B86C54E743
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon b170e88e8e8c6860 (6 x Formbook, 5 x MassLogger, 5 x SnakeKeylogger)
Reporter adrian__luca
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
392
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668.zip
Verdict:
Malicious activity
Analysis date:
2025-05-06 08:58:49 UTC
Tags:
arch-exec snake keylogger evasion stealer
Link:
https://app.any.run/tasks/a233c90d-d992-4047-9455-4eb31f298598

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Packed2.49210.5508.2628.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6819cff5432e243ac3e4880a
Tags:
underscore virus micro smtp
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Restart of the analyzed sample
Creating a file
Creating a file in the %temp% directory
Creating a process from a recently created file
Searching for synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/6819cf220b64e174c4199c7b/reports/f428afb9-ad79-48a2-b0ef-6217e36dd3cb/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/51526711-ebc7-4126-897a-c5767a6a5590
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/1681997
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
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
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 MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1681997 Sample: Payment Advice-6400usd_pdf.exe Startdate: 06/05/2025 Architecture: WINDOWS Score: 100 35 reallyfreegeoip.org 2->35 37 checkip.dyndns.org 2->37 39 checkip.dyndns.com 2->39 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for submitted file 2->53 57 12 other signatures 2->57 8 Payment Advice-6400usd_pdf.exe 4 2->8         started        12 svchost.exe 1 1 2->12         started        signatures3 55 Tries to detect the country of the analysis system (by using the IP) 35->55 process4 dnsIp5 29 C:\...\Payment Advice-6400usd_pdf.exe.log, ASCII 8->29 dropped 67 Adds a directory exclusion to Windows Defender 8->67 69 Injects a PE file into a foreign processes 8->69 15 Payment Advice-6400usd_pdf.exe 3 8->15         started        18 powershell.exe 23 8->18         started        45 127.0.0.1 unknown unknown 12->45 file6 signatures7 process8 file9 31 C:\Users\user\AppData\Local\Temp\PR.exe, PE32 15->31 dropped 33 C:\Users\user\AppData\Local\Temp33ewBin.exe, PE32 15->33 dropped 21 PR.exe 14 2 15->21         started        25 NewBin.exe 15 2 15->25         started        47 Loading BitLocker PowerShell Module 18->47 27 conhost.exe 18->27         started        signatures10 process11 dnsIp12 41 checkip.dyndns.com 132.226.8.169, 49682, 49683, 80 UTMEMUS United States 21->41 43 reallyfreegeoip.org 104.21.64.1, 443, 49684, 49685 CLOUDFLARENETUS United States 21->43 59 Antivirus detection for dropped file 21->59 61 Multi AV Scanner detection for dropped file 21->61 63 Tries to steal Mail credentials (via file / registry access) 21->63 65 Tries to harvest and steal browser information (history, passwords, etc) 21->65 signatures13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668/
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2025-04-30 18:32:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zg25umfgoahwpanrswfnx2td4rktw46kyztlvi2cs5hnacq7izua._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
novastealer
Create hunting rule
Similar samples:
097281445fcbf123697ab8a201a2702012b8d84ad6aac609a56934e87308dc3a
MassLogger
a219e517e4f68db96fa6c7bf2d044b991043884cb1ac1dbd5de22ec5f08ddb00
MassLogger
bedb516c0bbfe25e36c26f81d37be534ab096c087fc4e866fb20bf68cf4b9123
MassLogger
c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668
MassLogger
dc89f1981a7cc11ca6074aec4c09e0a1154d31474a0f51a5e5d57153741a00bd
MassLogger
error
MassLogger
f344de0d137247e297701368c696119f63122fdf8b08c0893eaff7eea50c6fc9
MassLogger
f42f597fbe95023f89a4ea65366f40d8c53321122add06b68826dfb7be7b5a21
MassLogger
+ 1'260 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250506-kw74jsbq5w/
Behaviour
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
Executes dropped EXE
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
MassLogger
Masslogger family
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/3d5ad264-96ad-44d0-8195-65002b306816
Unpacked files
SH256 hash:
c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668
MD5 hash:
78274b767c340fec8de8e040cc86ba0d
SHA1 hash:
e9f98a275be6450e6fdc69ff6eaa8960556c6931
Link:
https://www.unpac.me/results/e2783807-cd7c-4a03-a778-22ff3bb9e72d/
SH256 hash:
da071e2e1e8c617dd0cf02d2c93760cb5df9d710333985fb527456712e696d95
MD5 hash:
d521b5a9a00f5a181c3a23456c882313
SHA1 hash:
07ee987db6cce77e2383e8f1e99ba41d203bea9f
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/e2783807-cd7c-4a03-a778-22ff3bb9e72d/
Parent samples :
c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668
a1fefd86ae0ef828a917d9a9b5321f61c89ba2c74d1b73e668687589e0f8966f
SH256 hash:
9218d37b52677261d1f574716ce58761027d71ccf303e89bbad321c0fe493fc2
MD5 hash:
9e4e0425cad2cf9b3384a931459a6444
SHA1 hash:
5d1c912cfe2c1ff39bf19c76a410920273abf496
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/e2783807-cd7c-4a03-a778-22ff3bb9e72d/
SH256 hash:
ef95a02ea91377eb567b7c9a651608e9c2dee8ff798657968a06324ff953c324
MD5 hash:
4db5fd6c530c9f631d1cede7b77314ca
SHA1 hash:
ec0a08c09cbe1fc45f16eb9ebd7fb4a6240b351d
Link:
https://www.unpac.me/results/e2783807-cd7c-4a03-a778-22ff3bb9e72d/
SH256 hash:
7d37ca8970827c4f0a1cdbba016f8c37a87c6f8e96412e0262e52169bd00e723
MD5 hash:
1a2a538e0ee94f45d11eb9b60bb01d07
SHA1 hash:
fcbf56994f525dd400dd92c21c5bf547f91f3b1f
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/e2783807-cd7c-4a03-a778-22ff3bb9e72d/
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/c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668

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:NETexecutableMicrosoft
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
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)

File information

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

Malspam

MassLogger

Executable exe c9b5da30a6700f6781b1958adbea63e4553b73cac666baa342974ed00a1f4668

(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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