MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
SHA3-384 hash: 010a36c56cb4515dbfeb52aac412af82e847c3c20c2ede161cb1067aa0782b2c568fcab9d9da7c81a88fc061e6968a05
SHA1 hash: 0a686a6a08822bb12736beae0959f5d1d0dd53bc
MD5 hash: 7289bbdff19b02878def9d7822b80907
humanhash: maine-twenty-hamper-emma
File name:857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
Download: download sample
Signature MassLogger
Create hunting rule
File size:614'912 bytes
First seen:2025-04-08 07:27:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:WUzMjvOn6nzxNOv392Sfm9F9xPvqUpOUkAi12ivnAcvQ2Cnz:DIj2n6nLOv3oSfGFDKUpOUkARivnAh2q
Threatray 408 similar samples on MalwareBazaar
TLSH T150D4E15867D9D817C9A62B785571F239137B5DC9A832E3174FCC6CEBBB2BA009D04382
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
dhash icon 70cca2b2b2a2cc70 (7 x Formbook, 7 x SnakeKeylogger, 5 x MassLogger)
Reporter adrian__luca
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
426
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
Verdict:
Malicious activity
Analysis date:
2025-04-08 08:44:29 UTC
Tags:
snake keylogger evasion stealer ims-api generic
Link:
https://app.any.run/tasks/f36626f4-2059-4f54-86dd-38c35bf1b530

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=67f4d1dca695a0cd1fac9e11
Tags:
spawn shell msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
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
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Trojan.GenericS
Link:
https://www.hybrid-analysis.com/sample/857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/80a03528-4240-493f-9aaf-af8478eef26b
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/1659982
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
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
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
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
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: 1659982 Sample: cSzF53coP8.exe Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 46 reallyfreegeoip.org 2->46 48 checkip.dyndns.org 2->48 50 checkip.dyndns.com 2->50 52 Found malware configuration 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 Antivirus / Scanner detection for submitted sample 2->56 60 11 other signatures 2->60 8 cSzF53coP8.exe 7 2->8         started        12 PIlTNaKZ.exe 5 2->12         started        signatures3 58 Tries to detect the country of the analysis system (by using the IP) 46->58 process4 file5 34 C:\Users\user\AppData\Roaming\PIlTNaKZ.exe, PE32 8->34 dropped 36 C:\Users\...\PIlTNaKZ.exe:Zone.Identifier, ASCII 8->36 dropped 38 C:\Users\user\AppData\Local\...\tmp28A2.tmp, XML 8->38 dropped 40 C:\Users\user\AppData\...\cSzF53coP8.exe.log, ASCII 8->40 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 8->62 64 Adds a directory exclusion to Windows Defender 8->64 14 powershell.exe 23 8->14         started        17 cSzF53coP8.exe 15 2 8->17         started        20 schtasks.exe 1 8->20         started        66 Antivirus detection for dropped file 12->66 68 Multi AV Scanner detection for dropped file 12->68 22 PIlTNaKZ.exe 14 2 12->22         started        24 schtasks.exe 1 12->24         started        signatures6 process7 dnsIp8 70 Loading BitLocker PowerShell Module 14->70 26 conhost.exe 14->26         started        28 WmiPrvSE.exe 14->28         started        42 checkip.dyndns.com 132.226.247.73, 49692, 49694, 80 UTMEMUS United States 17->42 44 reallyfreegeoip.org 104.21.16.1, 443, 49693, 49695 CLOUDFLARENETUS United States 17->44 30 conhost.exe 20->30         started        72 Tries to steal Mail credentials (via file / registry access) 22->72 74 Tries to harvest and steal browser information (history, passwords, etc) 22->74 32 conhost.exe 24->32         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-03-24 03:19:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qv7i3biexq2p4dhd2ub5e5yqn55vo5bw4ujpypmywwudesf7an6q._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
novastealer
Create hunting rule
Similar samples:
15e3d2f2ae29c63206f13aa1768289a830ac2ef71c83227e3bc61a634ad7b05e
MassLogger
4d4f4dd3dd03d3ff63689d10675978b1e232f7d1429eca28cd3d9525824817eb
MassLogger
acc6517b11df152048c16285b8ba639256986dc63fc9934ce68e95dec0f2b293
MassLogger
ce113e073aa8b0c405170b4f9ba6f422fbf8e56719a2a9bc4e80c0c27a0df178
MassLogger
cf89ee5a964c6ba7ca2ac678c0727c0cde96b3a8a0268a103c1d529064dbc17e
MassLogger
+ 398 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250408-jab9bazrv7/
Behaviour
Scheduled Task/Job: Scheduled Task
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
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/7db4c50f-61ec-40b4-ba19-fa9d2078dad1
Unpacked files
SH256 hash:
857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
MD5 hash:
7289bbdff19b02878def9d7822b80907
SHA1 hash:
0a686a6a08822bb12736beae0959f5d1d0dd53bc
Link:
https://www.unpac.me/results/470f0d2d-eba7-452c-b758-25f66d0f34f3/
SH256 hash:
3a932f3a6ea71630097d4af733a9d9403397d8161e2135ddeb0235d4f96cd401
MD5 hash:
8686bfd841f934e8cc33da224d8c1f0d
SHA1 hash:
3f83caa97160e4b7336c5a114f7887896f9e0470
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/470f0d2d-eba7-452c-b758-25f66d0f34f3/
SH256 hash:
32a435a4610ffd79eb16810db7016917f65f91376ec0a4cf2cd32e817a1a07c6
MD5 hash:
e290670df236c9ee2b66e9bd63ed9921
SHA1 hash:
6916a972bd0faeae38804932954c8cf04a3dd04d
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/470f0d2d-eba7-452c-b758-25f66d0f34f3/
Parent samples :
e9819076355cb8f2c7534fbf14155e74376fcb291c879d8bc2e0d28bd973c122
293a0c10be849644ec095d7e436a50df007d2bdd13be2af96092dc0ba35f940c
5f637f363eda5c68b90daf33b41e46f22f955527ad67863bbb48fd7d3ec12ee8
106092b32c6933ddeb96acd2e8c1206cb864c1a6b1c15e92adb38d5562f1dc72
857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d
dfe95338ebb2364cb5d0634be41347a65d7988497e8348ccfbc41d03b373f88d
9d7b4e0c952ec93d8798c98b0ba00a07af4ba72cb1f98c27f08529069edcdc33
SH256 hash:
72bfd47266006b378f1b63658456e1fa450b4c8fa93a1e0c484f51261573257a
MD5 hash:
4966311889e08f67f7fa6bae9272372e
SHA1 hash:
6fbbd39bcdcf4891b07bab95d14e20f00ce710ce
Link:
https://www.unpac.me/results/470f0d2d-eba7-452c-b758-25f66d0f34f3/
Malware family:
PrivateLogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/857e8d8504bc/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/857e8d8504bc34fe0ce3d503d277106f7b577436e512fc3d98b5a83248bf037d

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_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.

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