MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d
SHA3-384 hash: 778e20f44f21ae11e4e0557179924525c32de110052393c8580814f7afcd5d4502713c3d0dd0677c87e55ee1ef3e7a01
SHA1 hash: 4161da11bf2da8ed83b721ee1d72ea9c3a0e0d9f
MD5 hash: 4c27395437d1880531cb727194221bb8
humanhash: indigo-carbon-low-magnesium
File name:4c27395437d1880531cb727194221bb8.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:463'361 bytes
First seen:2024-04-28 01:25:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 8c8bbaaa682c013cc75d9e0c38f1112a (30 x Stealc, 3 x Arechclient2, 1 x LummaStealer)
ssdeep 6144:rOrXOdV6MDOrctj6AwnV3NPYvEmAYc42VBPg1BwnFo7s4lB:rGO0r5AwlqvExYh0g1MKI4lB
TLSH T184A4B00372F0BC94E62606329F2ED6D8365DF9608E59AB27320DBA5F05FD1A1C2637D1
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 0009020904021000 (5 x Stealc)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.62/902e53a07830e030.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
376
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d.exe
Verdict:
Malicious activity
Analysis date:
2024-04-28 01:28:54 UTC
Tags:
gcleaner loader stealer stealc hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/e2a9f2fc-b2cc-408d-8a4f-eb0e4b939ce3

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

Behaviour
Searching for the window
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
Launching the default Windows debugger (dwwin.exe)
Connection attempt to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint overlay packed
Link:
https://www.filescan.io/uploads/662da5abd2fc149e41236131/reports/7bf8ce26-e0f9-4bf2-82f9-5892c61df573/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d
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/e592429b-f202-4e1b-9e3d-496270d94fe8
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/1432733
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
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 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)
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: 1432733 Sample: 8Xamqdn0bn.exe Startdate: 28/04/2024 Architecture: WINDOWS Score: 100 81 download.iolo.net 2->81 83 westus2-2.in.applicationinsights.azure.com 2->83 85 8 other IPs or domains 2->85 113 Snort IDS alert for network traffic 2->113 115 Found malware configuration 2->115 117 Malicious sample detected (through community Yara rule) 2->117 119 19 other signatures 2->119 9 8Xamqdn0bn.exe 3 11 2->9         started        14 run.exe 2->14         started        16 chrome.exe 1 2->16         started        signatures3 process4 dnsIp5 97 185.172.128.90, 49730, 80 NADYMSS-ASRU Russian Federation 9->97 99 185.172.128.228, 49731, 80 NADYMSS-ASRU Russian Federation 9->99 105 2 other IPs or domains 9->105 71 C:\Users\user\AppData\Local\Temp\u4to.3.exe, PE32 9->71 dropped 73 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->73 dropped 75 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->75 dropped 77 2 other malicious files 9->77 dropped 149 Detected unpacking (overwrites its own PE header) 9->149 18 u4to.0.exe 20 76 9->18         started        23 run.exe 6 9->23         started        25 u4to.3.exe 14 8 9->25         started        27 WerFault.exe 16 9->27         started        151 Maps a DLL or memory area into another process 14->151 153 Found direct / indirect Syscall (likely to bypass EDR) 14->153 29 cmd.exe 14->29         started        101 192.168.2.4, 443, 49730, 49731 unknown unknown 16->101 103 239.255.255.250 unknown Reserved 16->103 31 chrome.exe 16->31         started        33 chrome.exe 16->33         started        35 chrome.exe 16->35         started        file6 signatures7 process8 dnsIp9 87 185.172.128.62 NADYMSS-ASRU Russian Federation 18->87 55 C:\Users\user\AppData\...\softokn3[1].dll, PE32 18->55 dropped 57 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 18->57 dropped 59 C:\Users\user\AppData\...\mozglue[1].dll, PE32 18->59 dropped 67 9 other files (5 malicious) 18->67 dropped 121 Multi AV Scanner detection for dropped file 18->121 123 Detected unpacking (changes PE section rights) 18->123 125 Detected unpacking (overwrites its own PE header) 18->125 135 9 other signatures 18->135 37 WerFault.exe 18->37         started        61 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 23->61 dropped 63 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 23->63 dropped 127 Maps a DLL or memory area into another process 23->127 129 Found direct / indirect Syscall (likely to bypass EDR) 23->129 39 cmd.exe 4 23->39         started        89 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 25->89 131 Checks if the current machine is a virtual machine (disk enumeration) 25->131 43 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 25->43         started        65 C:\Users\user\AppData\Local\Temp\bhbgomekqy, PE32 29->65 dropped 133 Writes to foreign memory regions 29->133 45 conhost.exe 29->45         started        47 MSBuild.exe 29->47         started        91 www.google.com 172.253.115.103 GOOGLEUS United States 31->91 93 google.com 31->93 95 142.251.163.104 GOOGLEUS United States 33->95 file10 signatures11 process12 file13 69 C:\Users\user\AppData\Local\...\itervqkedrv, PE32 39->69 dropped 137 Writes to foreign memory regions 39->137 139 Found hidden mapped module (file has been removed from disk) 39->139 141 Maps a DLL or memory area into another process 39->141 49 MSBuild.exe 39->49         started        53 conhost.exe 39->53         started        143 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 43->143 145 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 43->145 147 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 43->147 signatures14 process15 dnsIp16 79 91.215.85.66 PINDC-ASRU Russian Federation 49->79 107 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 49->107 109 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 49->109 111 Tries to harvest and steal browser information (history, passwords, etc) 49->111 signatures17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d/
Threat name:
Win32.Trojan.StealC
Create hunting rule
Status:
Malicious
First seen:
2024-04-28 01:26:06 UTC
File Type:
PE (Exe)
Extracted files:
64
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qufvr5iegjftv3e3eyvoiism5y37ompzbmyl34fq5yhzurwwszgq._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/240428-bthw7sdc8z/
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
Checks computer location settings
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://185.172.128.62
Unpacked files
SH256 hash:
cfc2458a54578854cae748277b7527e4a2ff4a49aa4a55b885109fc334f73865
MD5 hash:
f24e8a42d193b41ec73c76a36c30ee0d
SHA1 hash:
4ceab3b79d49350c6d9575470cd273ec1d8b26cd
Link:
https://www.unpac.me/results/da8c07a4-0fd6-4f88-a93a-58da3f5dcee7/
SH256 hash:
850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d
MD5 hash:
4c27395437d1880531cb727194221bb8
SHA1 hash:
4161da11bf2da8ed83b721ee1d72ea9c3a0e0d9f
Link:
https://www.unpac.me/results/da8c07a4-0fd6-4f88-a93a-58da3f5dcee7/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/850b58f50432/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/850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_Mars_Stealer
Create hunting rule
Author:@malgamy12
Description:detect_Mars_Stealer
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of MFA browser extension IDs.
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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_Stealc_str
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:Stealc infostealer
Rule name:Windows_Trojan_Generic_2993e5a5
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Stealc_b8ab9ab5
Create hunting rule
Author:Elastic Security
Rule name:win_stealc_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stealc.
Rule name:yara_template
Create hunting rule

File information

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

Web download

Stealc

Executable exe 850b58f504324b3aec9b262ae4224cee37f731f90b30bdf0b0ee0f9a46d6964d

(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::GetVolumeInformationA
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputA
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasesA
KERNEL32.dll::GetConsoleProcessList
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::RemoveDirectoryA
KERNEL32.dll::GetTempPathA
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
KERNEL32.dll::QueryDosDeviceW

Comments