MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82. 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: 2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82
SHA3-384 hash: e41fa57eb563c412f489c718d899bf7568325f006bba3a67286670a554d5c5566663cf251d223ebd36ae9c48a7b02f0f
SHA1 hash: fc9668ffbf8abc393e6b9a9d9d62df5569dcdd5a
MD5 hash: 5bea60ba1105342f4afe5e8b303beba2
humanhash: red-mobile-mountain-lamp
File name:LETTER OF AUTHORIZATION.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:226'816 bytes
First seen:2025-01-21 11:01:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 3072:f+tCwmzWd6mwuDe17C1a/Lr7Q1TchN519MiFHBYIOX48t3xZYcEnCGV:mN6m9nazrl/L2GeIORt3xZYX
TLSH T1E624E51BE258513BC76D8336D23F1DBB66EB5A6F1470F5BAC96862147002232C7F46B8
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 threatcat_ch
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'512
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
LETTER OF AUTHORIZATION.zip
Verdict:
Malicious activity
Analysis date:
2025-01-21 15:21:23 UTC
Tags:
arch-exec evasion snake keylogger stealer ims-api generic
Link:
https://app.any.run/tasks/162402cf-6c63-4d57-bf7c-4ceaaf25ea07

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678f82b4b5602ee8cdae6926
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/678f7eba546efb719fab6777/reports/f4fdf608-44d9-4f2a-b867-de1907b8341c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82
Result
Verdict:
SUSPICIOUS
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:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d79f4eeb-b11d-4d78-ba61-557eee03330c
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1595873
Signature
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
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)
Yara detected AntiVM3
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/2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82/
Threat name:
ByteCode-MSIL.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-01-20 23:00:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ev4p5vd4v7zo56sn3jjtldpj4cy726bv5xhvjy7ztwwh3ltvtkba._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
collection discovery spyware stealer
Link:
https://tria.ge/reports/250121-m44r7s1jel/
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
Verdict:
Suspicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/ab2c5484-0405-47e3-90c3-1cfd19e43ea5
Unpacked files
SH256 hash:
cdc0c68185bf666c5e3df6e3f779f4c531a68231853383642b705d910938b354
MD5 hash:
4450e31de7ba01885f77720242589b9d
SHA1 hash:
d0fd996dc490c21568ee87b0aaac195430f37ec5
Link:
https://www.unpac.me/results/1d9c2b1f-9446-4ade-8092-2796888e82f5/
SH256 hash:
be39e38f0593f64eae82c62182fb24aec6c274cc7f50d247bc7b61a4ecf3b093
MD5 hash:
c2659425c5eda654cd617ba037c5dd2c
SHA1 hash:
8fa93666b87c544ca6071bf176a3a026a4e26d36
Detections:
win_masslogger_w0
Create hunting rule
win_404keylogger_g1
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/1d9c2b1f-9446-4ade-8092-2796888e82f5/
Parent samples :
991b1c3d3b28f8f10aa56078b6cb84411acfce44ba84345a939ea80554550d3e
2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82
2db439bbe2b7772dd99a190c9549f8ee3d449db2a1cf3d7a43b2cf729adcfc85
394bbb731e60c8b58adeb640b3f22dd6c02a92a61567df4d1b3db11f0e5be2c1
f71c420f6b519456fe106dab4189e77d8049c9e0296483af32088de50905446a
SH256 hash:
e8ebfda634e10c24642537582e256449074acdf2ac5ea827b81818c111111993
MD5 hash:
5b29dbce9331e1456dcac2b8f087dfd2
SHA1 hash:
702f2aef816d7ed31559640a56919a19c0c9cc51
Link:
https://www.unpac.me/results/1d9c2b1f-9446-4ade-8092-2796888e82f5/
SH256 hash:
2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82
MD5 hash:
5bea60ba1105342f4afe5e8b303beba2
SHA1 hash:
fc9668ffbf8abc393e6b9a9d9d62df5569dcdd5a
Link:
https://www.unpac.me/results/1d9c2b1f-9446-4ade-8092-2796888e82f5/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2578fed47caf/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/2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82

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.

Malspam

MassLogger

Executable exe 2578fed47caff2eefa4dda53358de9e0b1fd7835edcf54e3f99dac7dae759a82

(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

Comments