MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f. 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 6 File information Comments

SHA256 hash:	3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f
SHA3-384 hash:	3c8a1e930d987a10a7e5cfc116f4070f57d05acd3976eec8e9f4e8a44bd396aa8b91e5cdc5329636c795687c5607f72a
SHA1 hash:	9af4c89032747f3c1a0a9c1aae72c12494d916ba
MD5 hash:	df2dba56c238c4917f34ead304bdb25c
humanhash:	harry-nevada-timing-vermont
File name:	actstatement0072025.exe
Download:	download sample
Signature	MassLogger Create hunting rule
File size:	1'636'864 bytes
First seen:	2025-02-06 15:58:52 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	ce9395590cf4544e5787e22c02fa1640 (2 x MassLogger, 1 x AgentTesla, 1 x VIPKeylogger)
ssdeep	24576:p6DTB8la/IO+o6F5bU82IqKVBfFUGfVwFhGsqjnhMgeiCl7G0nehbGZpbD:owdNsYDmg27RnWGj
Threatray	3 similar samples on MalwareBazaar
TLSH	T11A75BD4611AC14EFF9F6D33098875167FFF17C956314C68F1240BA1A2AA3DA4B83B7A4
TrID	44.4% (.EXE) Win64 Executable (generic) (10522/11/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	abuse_ch
Tags:	exe MassLogger

Intelligence

File Origin

# of uploads :

# of downloads :

457

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

actstatement0072025.exe

Verdict:

Malicious activity

Analysis date:

2025-02-06 16:40:27 UTC

Tags:

evasion m0yv snake keylogger ims-api generic stealer

Link:

https://app.any.run/tasks/917c65e9-2dc1-43a9-9f2e-813bc9817836

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

SecuriteInfo.com.Win32.Expiro-3.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67a4ddb82dcee78dd819d3ab

Tags:

shellcode

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Creating a file in the %AppData% directory

Modifying an executable file

Launching a service

Searching for the window

Launching a process

Searching for synchronization primitives

Creating a file in the Windows subdirectories

Modifying a system executable file

Loading a system driver

Creating a window

Connection attempt to an infection source

DNS request

Connection attempt

Sending an HTTP GET request

Modifying a system file

Sending a custom TCP request

Reading critical registry keys

Enabling autorun for a service

Query of malicious DNS domain

Enabling autorun with the shell\open\command registry branches

Infecting executable files

Unauthorized injection to a system process

Sending an HTTP POST request to an infection source

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

fingerprint lolbin masquerade microsoft_visual_cc obfuscated packed packed packer_detected regasm

Link:

https://www.filescan.io/uploads/67a4dc5af07a60b21743bff9/reports/12c2d7d7-a9eb-422d-9b7f-5f725ef19f66/overview

Verdict:

Malicious

Labled as:

Win64.Expiro.Generic

Link:

https://www.hybrid-analysis.com/sample/3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f

Result

Verdict:

MALICIOUS

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:

Expiro

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/7a0dfff4-dee3-4acf-be01-ea0cef0ce3da

Result

Threat name:

MassLogger RAT

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1608556

Signature

.NET source code references suspicious native API functions

Allocates memory in foreign processes

Antivirus / Scanner detection for submitted sample

Contains functionality to behave differently if execute on a Russian/Kazak computer

Contains functionality to inject code into remote processes

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Machine Learning detection for 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)

Writes to foreign memory regions

Yara detected MassLogger RAT

Yara detected Telegram RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f/

Threat name:

Win64.Virus.Expiro

Status:

Malicious

First seen:

2025-02-05 13:58:14 UTC

File Type:

PE+ (Exe)

AV detection:

28 of 38 (73.68%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=hsf7arqkxf7zog3eloq22zmhkbsjo6n6tbklxi3fchu2ysjchghq._file

Verdict:

malicious

Label(s):

novastealer

MassLogger

593db9e9d76d4c94295c3afd1efbef8006c72cd6d2b1b681fd5433f6429f1664

MassLogger

error

MassLogger

Result

Malware family:

n/a

Score:

7/10

Tags:

collection discovery spyware stealer

Link:

https://tria.ge/reports/250206-te53as1pcm/

Behaviour

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Uses Volume Shadow Copy WMI provider

Uses Volume Shadow Copy service COM API

outlook_office_path

outlook_win_path

System Location Discovery: System Language Discovery

Drops file in Program Files directory

Drops file in Windows directory

Drops file in System32 directory

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Looks up external IP address via web service

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Verdict:

Malicious

Tags:

404keylogger

YARA:

n/a

Link:

https://app.threat.zone/submission/2bcdf0e6-69ad-46da-94b0-553bbca40d85

Unpacked files

SH256 hash:

3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f

MD5 hash:

df2dba56c238c4917f34ead304bdb25c

SHA1 hash:

9af4c89032747f3c1a0a9c1aae72c12494d916ba

Link:

https://www.unpac.me/results/d85046af-5bb4-45a6-86a1-9baed57393f2/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Expiro

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/3c8bf0460ab97f971b645ba1ad658750649779be9854bba36511e9ac4922398f

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:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	NET Create hunting rule
Author:	malware-lu

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:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

No further information available

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
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessA KERNEL32.dll::VirtualAllocEx KERNEL32.dll::WriteProcessMemory KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineA KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::FreeConsole KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleOutputCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileW

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