MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043. 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: 14


Intelligence 14 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
SHA3-384 hash: 57abd11133b7e08cd500e11c712247102ea2549583ab706b2fa292b982a38fc5adaa918e793ca93a6fc2302f08af66ec
SHA1 hash: 90658f4eec68c48a2764acdd86d4ebf8757a27d3
MD5 hash: 5ec61087c62b7253d45b72e19c096b5f
humanhash: triple-ten-helium-five
File name:5ec61087c62b7253d45b72e19c096b5f.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:355'840 bytes
First seen:2024-04-27 17:25:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2f726f40370b375fa05d60fc38904442 (12 x Stealc, 1 x Arechclient2)
ssdeep 6144:8o+4WgjZb/JFOtrrcQfDowFsTPgZvaRGbmDgAsWrJhUN5m8BO:5ZjZb/JfQboRTAvaYykBAfF
TLSH T1AC7402307BA0C47AD1A798345931CA94967F79222BB1C7873A441FFD3EB13C14A363A6
TrID 46.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
25.2% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 64d29a98c9a98981 (5 x Stealc)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.76/8681490a59ad0e34.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
342
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043.exe
Verdict:
Malicious activity
Analysis date:
2024-04-27 17:25:46 UTC
Tags:
loader stealer stealc arechclient2 backdoor
Link:
https://app.any.run/tasks/cb40c95a-03ac-442e-b2dc-152c49d7117f

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

Behaviour
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
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
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
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/3a3991a0-5b9f-4243-9a38-a9df48dc2f5d
Result
Threat name:
Mars Stealer, RedLine, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1432642
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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 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 Mars stealer
Yara detected RedLine Stealer
Yara detected Stealc
Yara detected UAC Bypass using CMSTP
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1432642 Sample: pvGLktoyG9.exe Startdate: 27/04/2024 Architecture: WINDOWS Score: 100 75 note.padd.cn.com 2->75 77 fp2e7a.wpc.phicdn.net 2->77 79 2 other IPs or domains 2->79 101 Snort IDS alert for network traffic 2->101 103 Multi AV Scanner detection for domain / URL 2->103 105 Found malware configuration 2->105 107 15 other signatures 2->107 9 pvGLktoyG9.exe 2 10 2->9         started        14 run.exe 2->14         started        16 chrome.exe 1 2->16         started        signatures3 process4 dnsIp5 89 185.172.128.203, 49731, 80 NADYMSS-ASRU Russian Federation 9->89 91 185.172.128.228, 49730, 80 NADYMSS-ASRU Russian Federation 9->91 93 note.padd.cn.com 176.97.76.106, 49732, 80 INTRAFFIC-ASUA United Kingdom 9->93 67 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->67 dropped 69 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->69 dropped 71 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 9->71 dropped 73 C:\Users\user\AppData\Local\Temp\u4s0.0.exe, PE32 9->73 dropped 129 Detected unpacking (changes PE section rights) 9->129 131 Detected unpacking (overwrites its own PE header) 9->131 18 u4s0.0.exe 10 77 9->18         started        23 run.exe 6 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        95 192.168.2.4, 138, 15647, 443 unknown unknown 16->95 97 239.255.255.250 unknown Reserved 16->97 29 chrome.exe 16->29         started        31 chrome.exe 16->31         started        33 chrome.exe 16->33         started        file6 signatures7 process8 dnsIp9 81 185.172.128.76, 49740, 80 NADYMSS-ASRU Russian Federation 18->81 51 C:\Users\user\AppData\...\softokn3[1].dll, PE32 18->51 dropped 53 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 18->53 dropped 55 C:\Users\user\AppData\...\mozglue[1].dll, PE32 18->55 dropped 63 9 other files (5 malicious) 18->63 dropped 109 Multi AV Scanner detection for dropped file 18->109 111 Detected unpacking (changes PE section rights) 18->111 113 Detected unpacking (overwrites its own PE header) 18->113 121 9 other signatures 18->121 35 WerFault.exe 18->35         started        57 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 23->57 dropped 59 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 23->59 dropped 115 Maps a DLL or memory area into another process 23->115 117 Found direct / indirect Syscall (likely to bypass EDR) 23->117 37 cmd.exe 4 23->37         started        61 C:\Users\user\AppData\Local\Temp\uohekcah, PE32 27->61 dropped 119 Writes to foreign memory regions 27->119 41 conhost.exe 27->41         started        43 MSBuild.exe 27->43         started        83 www.google.com 142.251.40.132, 443, 49739 GOOGLEUS United States 29->83 85 google.com 29->85 87 142.250.72.100, 443, 49763 GOOGLEUS United States 31->87 file10 signatures11 process12 file13 65 C:\Users\user\AppData\Local\Temp\cdnkrysfdi, PE32 37->65 dropped 123 Writes to foreign memory regions 37->123 125 Found hidden mapped module (file has been removed from disk) 37->125 127 Maps a DLL or memory area into another process 37->127 45 MSBuild.exe 6 37->45         started        49 conhost.exe 37->49         started        signatures14 process15 dnsIp16 99 91.215.85.66, 15647, 49759 PINDC-ASRU Russian Federation 45->99 137 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 45->137 139 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 45->139 141 Tries to harvest and steal browser information (history, passwords, etc) 45->141 signatures17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043/
Threat name:
Win32.Spyware.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-04-27 17:26:06 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
18 of 23 (78.26%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7i4lyuhifqfqbcilgi2ac7xbybcg6sarjzyaof7wtujn7noh2bbq._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:sectoprat family:stealc discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240427-vzt17sdc44/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
SectopRAT
SectopRAT payload
Stealc
Malware Config
C2 Extraction:
http://185.172.128.76
Unpacked files
SH256 hash:
cfc2458a54578854cae748277b7527e4a2ff4a49aa4a55b885109fc334f73865
MD5 hash:
f24e8a42d193b41ec73c76a36c30ee0d
SHA1 hash:
4ceab3b79d49350c6d9575470cd273ec1d8b26cd
Link:
https://www.unpac.me/results/bb08e752-93d0-4751-a13f-e8d9d7935dbd/
SH256 hash:
fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043
MD5 hash:
5ec61087c62b7253d45b72e19c096b5f
SHA1 hash:
90658f4eec68c48a2764acdd86d4ebf8757a27d3
Link:
https://www.unpac.me/results/bb08e752-93d0-4751-a13f-e8d9d7935dbd/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fa38bc50e82c/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/fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043

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:DebuggerException__SetConsoleCtrl
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 fa38bc50e82c0b00890b3234017ee1c0446f48114e700717f69d12dfb5c7d043

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2812849/
  
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_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::SetFirmwareEnvironmentVariableA
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetVolumeInformationA
KERNEL32.dll::GetStartupInfoA
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::ScrollConsoleScreenBufferA
KERNEL32.dll::SetConsoleCtrlHandler
KERNEL32.dll::SetConsoleDisplayMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA

Comments