MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986. 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


Stealc


Vendor detections: 15


Intelligence 15 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986
SHA3-384 hash: 0a9cbb811ab5481d8529cb8ac614d9746ba26e6cc9ea565665b9edf103a23d90b6e03def274a32bb1e6f3aed23b90a7f
SHA1 hash: f88d19522d3f90750760a45a759b19d58ca5964e
MD5 hash: 1209bdc89bbd9f5de5f8745ba9ae1ba5
humanhash: carpet-low-nebraska-hydrogen
File name:1209bdc89bbd9f5de5f8745ba9ae1ba5.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:458'753 bytes
First seen:2024-04-29 01:05:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 53479c6e947c122565b35fbddc803e0c (4 x Stealc)
ssdeep 6144:oNF3POAieKg0hJzuXlGf1aoe9LhE5alENffh/Zoftod2TD2xmSuWVH:oNF/OAi3wUavE5alENffh/q1SYFWVH
TLSH T13BA4AE4363E0FC54E562CB328E3EB6E4361DF9604E946B276298BA6F14B41F1F223751
TrID 67.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.2% (.EXE) Win32 Executable (generic) (4504/4/1)
2.4% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 0409032514011200 (4 x Stealc)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.150/c698e1bc8a2f5e6d.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
371
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986.exe
Verdict:
Malicious activity
Analysis date:
2024-04-29 01:06:51 UTC
Tags:
gcleaner loader stealer stealc hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/f4cbae03-171f-480d-a009-097cd7eea690

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP GET request to an infection source
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
DNS request
Connection attempt
Sending an HTTP GET request
Connecting to a non-recommended domain
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a window
Searching for synchronization primitives
Creating a file
Launching the default Windows debugger (dwwin.exe)
Sending an HTTP POST request
Searching for the window
Connection attempt to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint overlay packed
Link:
https://www.filescan.io/uploads/662ef27b75339da04fa5a71a/reports/e0baf817-be78-4288-833c-bf46615bc199/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986
Result
Verdict:
MALICIOUS
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:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4f5c289c-63de-4d1e-8baa-e7b84fe2b0cd
Result
Threat name:
Mars Stealer, PureLog Stealer, RedLine,
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433053
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Checks if the current machine is a virtual machine (disk enumeration)
Connects to many ports of the same IP (likely port scanning)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found direct / indirect Syscall (likely to bypass EDR)
Found evasive API chain (may stop execution after checking locale)
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Snort IDS alert for network traffic
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Uses known network protocols on non-standard ports
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected Mars stealer
Yara detected PureLog Stealer
Yara detected RedLine Stealer
Yara detected SectopRAT
Yara detected Stealc
Yara detected UAC Bypass using CMSTP
Yara detected Vidar stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1433053 Sample: f59tXVey4e.exe Startdate: 29/04/2024 Architecture: WINDOWS Score: 100 75 download.iolo.net 2->75 77 westus2-2.in.applicationinsights.azure.com 2->77 79 8 other IPs or domains 2->79 117 Snort IDS alert for network traffic 2->117 119 Multi AV Scanner detection for domain / URL 2->119 121 Found malware configuration 2->121 123 22 other signatures 2->123 9 f59tXVey4e.exe 3 11 2->9         started        14 run.exe 2->14         started        signatures3 process4 dnsIp5 81 185.172.128.90, 49730, 80 NADYMSS-ASRU Russian Federation 9->81 83 185.172.128.228, 49731, 80 NADYMSS-ASRU Russian Federation 9->83 85 2 other IPs or domains 9->85 61 C:\Users\user\AppData\Local\Temp\u3es.3.exe, PE32 9->61 dropped 63 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->63 dropped 65 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->65 dropped 67 2 other malicious files 9->67 dropped 131 Detected unpacking (overwrites its own PE header) 9->131 16 u3es.0.exe 66 9->16         started        21 run.exe 6 9->21         started        23 u3es.3.exe 20 8 9->23         started        25 WerFault.exe 21 16 9->25         started        133 Maps a DLL or memory area into another process 14->133 135 Found direct / indirect Syscall (likely to bypass EDR) 14->135 27 cmd.exe 14->27         started        file6 signatures7 process8 dnsIp9 71 185.172.128.150, 49733, 80 NADYMSS-ASRU Russian Federation 16->71 47 C:\Users\user\AppData\...\softokn3[1].dll, PE32 16->47 dropped 49 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 16->49 dropped 51 C:\Users\user\AppData\...\mozglue[1].dll, PE32 16->51 dropped 59 9 other files (5 malicious) 16->59 dropped 101 Detected unpacking (changes PE section rights) 16->101 103 Detected unpacking (overwrites its own PE header) 16->103 105 Tries to steal Mail credentials (via file / registry access) 16->105 115 8 other signatures 16->115 29 WerFault.exe 16->29         started        53 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 21->53 dropped 55 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 21->55 dropped 107 Maps a DLL or memory area into another process 21->107 109 Found direct / indirect Syscall (likely to bypass EDR) 21->109 31 cmd.exe 4 21->31         started        73 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 23->73 111 Checks if the current machine is a virtual machine (disk enumeration) 23->111 35 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 23->35         started        57 C:\Users\user\AppData\Local\Temp\gktg, PE32 27->57 dropped 113 Writes to foreign memory regions 27->113 37 conhost.exe 27->37         started        39 MSBuild.exe 27->39         started        file10 signatures11 process12 file13 69 C:\Users\user\AppData\Local\Temp\ttor, PE32 31->69 dropped 89 Writes to foreign memory regions 31->89 91 Found hidden mapped module (file has been removed from disk) 31->91 93 Maps a DLL or memory area into another process 31->93 41 MSBuild.exe 5 31->41         started        45 conhost.exe 31->45         started        95 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 35->95 97 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 35->97 99 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 35->99 signatures14 process15 dnsIp16 87 91.215.85.66 PINDC-ASRU Russian Federation 41->87 125 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 41->125 127 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 41->127 129 Tries to harvest and steal browser information (history, passwords, etc) 41->129 signatures17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986/
Threat name:
Win32.Trojan.Operaloader
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 01:06:05 UTC
File Type:
PE (Exe)
Extracted files:
62
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=znf7rbsrmwyvtzav4akcc4hz2pw26h2vtpesd3au2bjzfyqydgda._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:sectoprat family:stealc family:zgrat discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240429-bf3pfsea5z/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Downloads MZ/PE file
Detect ZGRat V1
SectopRAT
SectopRAT payload
Stealc
ZGRat
Malware Config
C2 Extraction:
http://185.172.128.150
Unpacked files
SH256 hash:
cfc2458a54578854cae748277b7527e4a2ff4a49aa4a55b885109fc334f73865
MD5 hash:
f24e8a42d193b41ec73c76a36c30ee0d
SHA1 hash:
4ceab3b79d49350c6d9575470cd273ec1d8b26cd
Link:
https://www.unpac.me/results/0657771f-80f6-47c4-a289-35ec88b36dd5/
SH256 hash:
cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986
MD5 hash:
1209bdc89bbd9f5de5f8745ba9ae1ba5
SHA1 hash:
f88d19522d3f90750760a45a759b19d58ca5964e
Link:
https://www.unpac.me/results/0657771f-80f6-47c4-a289-35ec88b36dd5/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cb4bf8865165/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/cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Windows_Trojan_Generic_2993e5a5
Create hunting rule
Author:Elastic Security

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Stealc

Executable exe cb4bf8865165b159e415e0142170f9d3edaf1f559bc921ec14d05392e2181986

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2802625/
  
Delivery method
Distributed via web download

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetVolumeInformationW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputA
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasesA
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateHardLinkA
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::GetSystemDirectoryA
KERNEL32.dll::RemoveDirectoryA
KERNEL32.dll::GetTempPathA
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameA
KERNEL32.dll::QueryDosDeviceW

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