MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec. 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: 15

Intelligence 15 IOCs YARA 5 File information Comments

SHA256 hash:	a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec
SHA3-384 hash:	bae5e6804d7dca4c83b44bf46cfd00866c8bd2907acd10f6ac88cd226bcf5325387e5ddaf97fed7f73b96f543d09953a
SHA1 hash:	9f96bbdd91c2766dd98208f05f06119795392b3d
MD5 hash:	8025b0ed39e277519bbb54ca25fc7e16
humanhash:	quebec-california-papa-dakota
File name:	a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec
Download:	download sample
Signature	MassLogger Create hunting rule
File size:	602'112 bytes
First seen:	2025-06-10 09:46:32 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:NdplZJrOxOU7Nif25IwzsBoFDcVCWLTxZYVhnASeEk:PTA7kf2SZAsonASe
Threatray	3'604 similar samples on MalwareBazaar
TLSH	T12ED4F15C3746EC0BCA2217740A71F2B853B95EEAE810D756AFDD7DAF78B6B010904293
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	e89e8e7133b2b2f0 (13 x SnakeKeylogger, 9 x Formbook, 3 x AgentTesla)
Reporter	adrian__luca
Tags:	exe MassLogger

Intelligence

File Origin

# of uploads :

# of downloads :

392

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec

Verdict:

Malicious activity

Analysis date:

2025-06-10 15:08:42 UTC

Tags:

evasion snake keylogger stealer

Link:

https://app.any.run/tasks/f2e54de8-bd8a-4b3a-958e-482bb3d3e289

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/8590/

Detection(s):

SecuriteInfo.com.Trojan.PackedNET.3342.27733.19584.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6847ff278bd5d68a12e764b1

Tags:

virus micro msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

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

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec

Malware family:

Snake Keylogger

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/84c8f9cf-37b7-4ea7-9977-d9fce19b4e2b

Result

Threat name:

MSIL Logger, MassLogger RAT

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1711387

Signature

.NET source code contains potential unpacker

.NET source code references suspicious native API functions

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

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 threadpools to delay analysis

Yara detected AntiVM3

Yara detected MassLogger RAT

Yara detected MSIL Logger

Yara detected Telegram RAT

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2025-05-27 03:46:02 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 36 (66.67%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ujohsbhhloorpdchsmmc4z775blljkqykwqaubagewxxsgkyo7wa._file

Verdict:

malicious

Label(s):

novastealer

unc_loader_037

MassLogger

7d8f98ced8dcca5e2397bdaaff65fa3d81fb264425167e282ad4fce5f832b59e

MassLogger

8d3dc8435753d98fab3d705924b85fc92b2c4fa3e62ad118497159422c6665c7

MassLogger

91a04734fb1bfa93391d961ff94dfdfffc3021d6cf56cb31f9d696aa3251c6e2

MassLogger

ceaa99440a1294e1a574941c6f1b01db99ad6d85d314264156989e893a64cd6e

MassLogger

+ 3'594 additional samples on MalwareBazaar

Result

Malware family:

masslogger

Score:

10/10

Tags:

family:masslogger collection discovery spyware stealer

Link:

https://tria.ge/reports/250610-lr8pysdn8y/

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

Reads user/profile data of local email clients

Reads user/profile data of web browsers

MassLogger

Masslogger family

Verdict:

Malicious

Tags:

404keylogger

YARA:

n/a

Link:

https://app.threat.zone/submission/65a85950-7df4-4230-81ca-4ea5d99dd9b2

Unpacked files

SH256 hash:

a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec

MD5 hash:

8025b0ed39e277519bbb54ca25fc7e16

SHA1 hash:

9f96bbdd91c2766dd98208f05f06119795392b3d

Link:

https://www.unpac.me/results/2c9bc809-1534-4b9b-9cb5-fe89b4ff114d/

SH256 hash:

a4002a41088aba3178c8779a4388f40896543f0d5694562729e66f5e4dd899fd

MD5 hash:

6e0c8d849a1ae2b9cfa9ea70e7a0cd57

SHA1 hash:

24a5e2eea493aafd31f48b0b93e534aaf757db4f

Link:

https://www.unpac.me/results/2c9bc809-1534-4b9b-9cb5-fe89b4ff114d/

SH256 hash:

db1e2bdf46b91b344388917cce002a59eeae306faaa2c7047682e05957f79464

MD5 hash:

5a400390e686221257ff49c73114d328

SHA1 hash:

5ba4d8f0ec88944beae1a20ee5364e1055423b2c

Detections:

win_404keylogger_g1

win_masslogger_w0

MAL_Envrial_Jan18_1

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_TelegramChatBot

Link:

https://www.unpac.me/results/2c9bc809-1534-4b9b-9cb5-fe89b4ff114d/

Parent samples :

5300d530719dedb6a72a1cdc2f7f1bcee476b089ecdf61efabdffa563cb7f677
64e521b1aaa4bd2be8a49cb4e0072f41fc01511111bc8ebae05b47db97597282
7320df556e7b9c5a0937fd7cb3c08702535e1f9c8c7f883f1473e7b497dc549f
eb2b92696df2c63eb5552c1c4fb151c1ce58f543e6d498addcf2878fe61607b3
a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec

SH256 hash:

73f458ae2be2ca31cba621713b896f8d38549fea8420193d5bd832e9ba0f7846

MD5 hash:

2430e96b9bc6eb26a6d746a75148c531

SHA1 hash:

68da53e96829cb501755b3406ec22c513ca13e7a

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/2c9bc809-1534-4b9b-9cb5-fe89b4ff114d/

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/a25c7904e75b9d178c4793182e67ffe856b4aa1855a00a040625af79195877ec

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.

Cape

https://www.capesandbox.com/analysis/8590/

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

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