MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1e3a6d51db48a05f1d5022fd98fd544cd64af54db335e11fd229c45a6fb4a8d. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b1e3a6d51db48a05f1d5022fd98fd544cd64af54db335e11fd229c45a6fb4a8d
SHA3-384 hash: 5f5d4f8d208e9f578cef743793c9dd0c6bbdb9880d9c62d2aff1083bc292e6aaf0aaf9e5a416418ed15e05459a0b9f73
SHA1 hash: 4a881f1be8ba41e0cc060994a960e9c4e1453ef2
MD5 hash: 0ed75b6b8d7e7311ed553b947bd146a7
humanhash: april-solar-william-nineteen
File name:HalkBank.Kopija.Plakanje.pdf.bat
Download: download sample
Signature MassLogger
Create hunting rule
File size:402'944 bytes
First seen:2025-01-17 07:57:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:0D2fsmumjKVhv1u6lohaBN8Kq+w6E2VHcIpXC9XvxuXqHtCZo:Rsx8uP6oTflHcIpX8ZuXqHoZ
Threatray 1'981 similar samples on MalwareBazaar
TLSH T1C9849707768B49F9F2951B76C4A70D0007E4EB8377AFDA1EB94A1B5A09037ABCF40617
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
Reporter abuse_ch
Tags:bat exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
429
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
HalkBank.Kopija.Plakanje.pdf.bat
Verdict:
Malicious activity
Analysis date:
2025-01-17 08:32:28 UTC
Tags:
evasion snake keylogger stealer ims-api generic
Link:
https://app.any.run/tasks/7a3f2de0-1980-432e-8641-f7b90f3411cb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.21920.15492.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678a0d90aa9c8e7858df1d43
Tags:
backdoor autorun hype sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt to an infection source
Creating a file in the %AppData% directory
Unauthorized injection to a recently created process
Restart of the analyzed sample
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Creating a window
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade net_reactor obfuscated packed
Link:
https://www.filescan.io/uploads/678a0d8d58f2a9298c8e4b61/reports/b205d484-bf32-47f2-a896-dded7063a6c2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/b1e3a6d51db48a05f1d5022fd98fd544cd64af54db335e11fd229c45a6fb4a8d
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/19257845-0b15-4bee-af50-83df70966601
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1593470
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Drops VBS files to the startup folder
Found malware configuration
Initial sample is a PE file and has a suspicious name
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1593470 Sample: HalkBank.Kopija.Plakanje.pd... Startdate: 17/01/2025 Architecture: WINDOWS Score: 100 30 reallyfreegeoip.org 2->30 32 remisat.com.uy 2->32 34 2 other IPs or domains 2->34 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Multi AV Scanner detection for submitted file 2->52 56 10 other signatures 2->56 8 HalkBank.Kopija.Plakanje.pdf.bat.exe 15 5 2->8         started        13 wscript.exe 1 2->13         started        signatures3 54 Tries to detect the country of the analysis system (by using the IP) 30->54 process4 dnsIp5 36 remisat.com.uy 192.254.232.209, 443, 49707, 49710 UNIFIEDLAYER-AS-1US United States 8->36 24 C:\Users\user\AppData\Roaming\Method.exe, PE32 8->24 dropped 26 C:\Users\user\AppData\Roaming\...\Method.vbs, ASCII 8->26 dropped 28 C:\Users\user\...\Method.exe:Zone.Identifier, ASCII 8->28 dropped 62 Drops VBS files to the startup folder 8->62 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->64 15 HalkBank.Kopija.Plakanje.pdf.bat.exe 2 8->15         started        66 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->66 19 Method.exe 14 2 13->19         started        file6 signatures7 process8 dnsIp9 38 checkip.dyndns.com 158.101.44.242, 49708, 49714, 80 ORACLE-BMC-31898US United States 15->38 40 reallyfreegeoip.org 104.21.64.1, 443, 49709, 49715 CLOUDFLARENETUS United States 15->40 42 Tries to steal Mail credentials (via file / registry access) 15->42 44 Multi AV Scanner detection for dropped file 19->44 46 Machine Learning detection for dropped file 19->46 21 Method.exe 2 19->21         started        signatures10 process11 signatures12 58 Tries to steal Mail credentials (via file / registry access) 21->58 60 Tries to harvest and steal browser information (history, passwords, etc) 21->60
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b1e3a6d51db48a05f1d5022fd98fd544cd64af54db335e11fd229c45a6fb4a8d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b1e3a6d51db48a05f1d5022fd98fd544cd64af54db335e11fd229c45a6fb4a8d/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-01-16 13:21:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=whr2nvi5wsfal4ovaix5td6vitgwjl2u3mzv4ep5ekoeljx3jkgq._file
Verdict:
malicious
Label(s):
snakekeylogger
Create hunting rule
Similar samples:
2300ca2c579e70a1857dd185e1f98ae8f691176b4af9917b037c257ba344c584
MassLogger
2608d67aae7f9daf3a1987ce291728a015dc85a5a535aa54fb3a212ae5b078ea
MassLogger
b0da8ee7ba9f7867231c71a57402f66ee0a42b89fb130768a680cd0f5c6bbfe7
MassLogger
be9ccc4a8a960dca990a7582abf5bdd3245fd5b552864a22d52d764f58a4d2ca
MassLogger
error
MassLogger
f2cb4fd774b8ddbff0c2d975a88f1cf46ef9adee8feaaf7c0a837f1435728da8
MassLogger
+ 1'971 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
collection discovery spyware stealer
Link:
https://tria.ge/reports/250117-jttmpsxnas/
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
Drops startup file
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Suspicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/1882d32a-f997-4680-9496-cd750b88a031
Unpacked files
SH256 hash:
b1e3a6d51db48a05f1d5022fd98fd544cd64af54db335e11fd229c45a6fb4a8d
MD5 hash:
0ed75b6b8d7e7311ed553b947bd146a7
SHA1 hash:
4a881f1be8ba41e0cc060994a960e9c4e1453ef2
Link:
https://www.unpac.me/results/321fa124-f367-439b-a78d-e18a78a6d1f2/
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
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

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