MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73. 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: 13


Intelligence 13 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73
SHA3-384 hash: bd91a65b539bd3f774db7226a39d92f6cbf68b1158aae4587e21be9b006246007a3dc1208725319cb73cd95f199a5e8b
SHA1 hash: 190144c96670776f66b8e6153d37465ec8110381
MD5 hash: 36c9e817ec99f6dff617ad6f7b8d37c5
humanhash: north-pennsylvania-edward-pip
File name:BL7257139040.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:592'384 bytes
First seen:2025-02-24 11:13:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:uMr8Iy2dYeXY/e1AVqmxH+ZRmmwK40rCf/JkbAnkzXpEk2T:uMrbZRWomxKUK76m5EHT
TLSH T1D6C4E084B215F512C5A997B406B2F5B4177C5E9EA000E31B9FD93CEFBCB6B420E19683
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 1607014111010001 (8 x MassLogger, 6 x SnakeKeylogger, 2 x AgentTesla)
Reporter TeamDreier
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
37
Origin country :
Vendor Threat Intelligence
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67bc544da0fd713c335c9e3a
Tags:
dropper virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67bc54526222db7f23d9dced/reports/b0ba66bc-5ceb-4b4f-ab90-23f2d43ad25a/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73
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:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/733e7d67-fce1-4d79-91eb-80ce5897c69f
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/1622672
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious 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 MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-02-24 02:37:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gg3jbymvhgwws736oq6cmqorkgw5wbycdgvd5rexsy3bt65evvzq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
collection discovery spyware stealer
Link:
https://tria.ge/reports/250224-nbhvpsyrt4/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
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/f5e585b0-e12d-4a99-8db5-221d67c65105
Unpacked files
SH256 hash:
31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73
MD5 hash:
36c9e817ec99f6dff617ad6f7b8d37c5
SHA1 hash:
190144c96670776f66b8e6153d37465ec8110381
Link:
https://www.unpac.me/results/c68f920d-4a03-437b-a866-2f2aca6e1ac9/
SH256 hash:
e80a463e16b14b43e4112cb8f0cb0cf44ff245be592202042373a02b9ea4deb9
MD5 hash:
bbea1aafd0d7058f6f46c8ceff355f96
SHA1 hash:
14ca07073c0a943129823d6532358a55761a203f
Link:
https://www.unpac.me/results/c68f920d-4a03-437b-a866-2f2aca6e1ac9/
SH256 hash:
fced4c6c7d3d70c7a2a083d49da876a0b389f5d6cbcdf6d36273317a7c8e869b
MD5 hash:
5429581c7b6a4b8eaf60d70c755a4ea3
SHA1 hash:
62d92f38ce4979b6d752f8896692105856f6b768
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/c68f920d-4a03-437b-a866-2f2aca6e1ac9/
Parent samples :
2382002f38b7558edbfaaa25ab025c7e6985829b544440011e438c7bcd17033f
c987adf88eb49413b48d8740fd342b851b5b8dd1dbc65179143aacd67501ffcd
b74937d0f19896f2d3256daf121395e8fcea20c8a509fac8fd5ebb95306fd00b
31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73
49d7b6656854fd58bc9b06331bc0227fe87edd737538121aa04a96fd8e22a7fa
3d2d4932b38d1e1d37482e994eba2c33927a90e9452ee52c06b5049cfa96fb58
SH256 hash:
d5afd7babc4ad40ec6f414e8c020a1e7f3163cbe05748dbb9ea7cfe84683d71a
MD5 hash:
88487564d28d0fa677508515b8042d7f
SHA1 hash:
cac0603c8b7ec3a7ca933e2ffbc34e17bb64b283
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/c68f920d-4a03-437b-a866-2f2aca6e1ac9/
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/31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73

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:NETexecutableMicrosoft
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 31b690e19539ad697f7e743c2641d151addb070219aa3ec497963619fba4ad73

(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 (GUARD_CF)high

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