MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4
SHA3-384 hash: f13a281b2c27366b9362b14d11c2cdc983b46f76f27cb167f16b2c5d14074f9bc346850ca932645f4879fe7bb39bf909
SHA1 hash: 45d7354b132d9cbae3f998b177ae989c239ee525
MD5 hash: 193bc6eda6f1e32791079ace3b5885d4
humanhash: vermont-bluebird-table-friend
File name:l2sAfRPeSwCxbl7.pdf.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:655'360 bytes
First seen:2025-02-12 13:22:30 UTC
Last seen:2025-02-12 14:45:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:/Rfp55ZyWwEe5TmzqSrQIA08tYo4/7xefpz:/RfpTnwV5Zbndtctehz
TLSH T115D4ADC83A29A712DD7957B08634ED7413F91CADB010F5A65EDA3BDBB8A97011E08F13
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 lowmal3
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
448
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
l2sAfRPeSwCxbl7.pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-02-12 13:23:51 UTC
Tags:
evasion snake keylogger stealer
Link:
https://app.any.run/tasks/fe3b8c94-60e4-4417-b978-b2ee0fcd631a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3224.25575.18690.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67aca0b44f5583c4c4d861f0
Tags:
underscore snake
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Creating a process with a hidden window
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
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67aca0a0cda1fa3c249fca17/reports/0755f33e-1095-47b3-b900-5bf06ed0a325/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aa89241b-6ba4-4da2-be8b-957ca42c431b
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1613112
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
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 submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Double Extension File Execution
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 an obfuscated file name to hide its real file extension (double extension)
Yara detected MassLogger RAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-02-12 12:17:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=shdwodfkckp7m4j7uljmoynhezlijabe5otshqjzkp2wlfa7yxsa._file
Verdict:
malicious
Label(s):
novastealer
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
error
MassLogger
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250212-qmkvjssrdx/
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
System Network Configuration Discovery: Internet Connection 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
Downloads MZ/PE file
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/5cde2afd-28ca-4d2b-b49d-3236c633a9cb
Unpacked files
SH256 hash:
91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4
MD5 hash:
193bc6eda6f1e32791079ace3b5885d4
SHA1 hash:
45d7354b132d9cbae3f998b177ae989c239ee525
Link:
https://www.unpac.me/results/136c233d-f575-4554-a301-023d8b71b27e/
SH256 hash:
63b0b0b5708ccad51587fc39a26e18f50a55fe052b56d2c2b1281eb3e775fcd4
MD5 hash:
9e0656eeb628f22ed2fc94b248c7a139
SHA1 hash:
6d0b4b64b2afa87b69164abcf2cb3420687ca1d1
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/136c233d-f575-4554-a301-023d8b71b27e/
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Link:
https://www.unpac.me/results/136c233d-f575-4554-a301-023d8b71b27e/
SH256 hash:
bac64aae1d890a96bfab5f81399f42efcd5aaf214b87a9a398f72b3da4c4fcfe
MD5 hash:
e7ec2e2a866af73584da7ede5e287f21
SHA1 hash:
fb138c30c83fb6a6924d6f88cd3f3c6660ec35af
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/136c233d-f575-4554-a301-023d8b71b27e/
Parent samples :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 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/91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4

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
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 91c7670caa129ff6713fa2d2c761a72656848024eba723c13953f565941fc5e4

(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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