MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d. 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 17 File information Comments
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SHA256 hash: 537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d
SHA3-384 hash: ef755ca7ef061a8f067a12ddd6a8b57e8ba8b87426092591e042c65ec39e773c4b0fe13e5e0c1e0b3ab94d22f5e7d393
SHA1 hash: d425103a22463af1f8070f394a147b0e2d3ca8e9
MD5 hash: da88b9d5a99843082b9258e087ae0ea9
humanhash: fish-football-ack-arizona
File name:DEMANDE DE PRODUITS_SEPT2022.xlxs(66kb).exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:162'224 bytes
First seen:2022-09-09 08:40:44 UTC
Last seen:2022-09-09 09:53:41 UTC
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:GspYocLKwD+MctFYFroOyKMPggSE9bdB4/tTc0owUdTZ5yMHHMc:YJN8FIWKzE9bdB4VTotMc
TLSH T1F8F3D0ECBBD80C46CA5B8E71489144C38530F8A7E593D3B664D5B22909867FFB90E5B3
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon d2e8ecb2b2a2b282 (106 x AgentTesla, 106 x Formbook, 24 x RedLineStealer)
Reporter lowmal3
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
365
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
DEMANDE DE PRODUITS_SEPT2022.xlxs(66kb).exe
Verdict:
Malicious activity
Analysis date:
2022-09-09 08:43:07 UTC
Tags:
evasion stealer quasar
Link:
https://app.any.run/tasks/da120da7-880b-4fd0-9906-4222115f6f1d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/308950/
Detection(s):
SecuriteInfo.com.Trojan.InjectNET.50.22142.8224.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Creating a window
Using the Windows Management Instrumentation requests
Query of malicious DNS domain
Unauthorized injection to a system process
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/631afc97d06d9bc4c7afb805/reports/ba4302d5-ce33-47a1-b708-88e8c485105b/overview
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:
BluStealer
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/de464e5e-0855-4daa-81dc-dcc6b1733876
Result
Threat name:
BluStealer, DarkCloud, StormKitty
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1067661
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected BluStealer
Yara detected DarkCloud
Yara detected Generic Downloader
Yara detected StormKitty Stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d/
Threat name:
ByteCode-MSIL.Trojan.Stormkitty
Create hunting rule
Status:
Malicious
First seen:
2022-09-09 07:21:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kn7o7xmjyuycltr6kina3xqnfxmzxt4u6ydd7vvqqi7clhdsujwq._file
Verdict:
malicious
Result
Malware family:
stormkitty
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Score:
  10/10
Tags:
family:blustealer family:stormkitty collection spyware stealer
Link:
https://tria.ge/reports/220909-klfasadgfm/
Behaviour
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Accesses cryptocurrency files/wallets, possible credential harvesting
Looks up external IP address via web service
BluStealer
StormKitty
StormKitty payload
Malware Config
C2 Extraction:
https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377
Unpacked files
SH256 hash:
d1aac0416b3599e187c1d0b6ca909c20f6a86106d3b598786e5586345c17ae04
MD5 hash:
3440b284e18ec1653934fc185e55e046
SHA1 hash:
bf0c1cb785ed4ee8495feac83c0d4ba1a8ff86b5
Link:
https://www.unpac.me/results/46515cb7-e76a-49be-a595-2ed4b5f20e2f/
SH256 hash:
ef013cb0f46c2d1ab80521258a51a2b5b43c21b451d4218b2106198ae3a8a76d
MD5 hash:
14f8cc7f86f6352923673816ce1b9adc
SHA1 hash:
0541ed52bae48f6a9c0aa06bd146bc9b8ea0ffae
Detections:
win_agent_tesla_g2
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win_masslogger_w0
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Link:
https://www.unpac.me/results/46515cb7-e76a-49be-a595-2ed4b5f20e2f/
SH256 hash:
537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d
MD5 hash:
da88b9d5a99843082b9258e087ae0ea9
SHA1 hash:
d425103a22463af1f8070f394a147b0e2d3ca8e9
Link:
https://www.unpac.me/results/46515cb7-e76a-49be-a595-2ed4b5f20e2f/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/537eefdd89c5/report/overview.html
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:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
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_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_CryptoWallets
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many cryptocurrency mining wallets or apps. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:MALWARE_Win_A310Logger
Create hunting rule
Author:ditekSHen
Description:Detects A310Logger
Rule name:MALWARE_Win_StormKitty
Create hunting rule
Author:ditekSHen
Description:Detects StormKitty infostealer
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Quasar_RAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_1_RID2B54
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_DOTNET_PE_List_AV
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
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 537eefdd89c53025ce3e521a0dde0d2dd99bcf94f6063fd6b0823e259c72a26d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/308950/

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