MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e. 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: 437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e
SHA3-384 hash: 8555dbcfe7d4c0d399ad66f78a0575346e966a0632eba0790a30a65044ffde5f3afb94fc9b653d5294e6649a9794ee64
SHA1 hash: e428d086416f0717f7624074115b6a22eb907d15
MD5 hash: 840ed5daff93eba0ccd7e6c7889e1f3f
humanhash: timing-connecticut-utah-washington
File name:840ed5daff93eba0ccd7e6c7889e1f3f.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:467'968 bytes
First seen:2024-04-28 09:10:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f654e5c1b5e321f3cf66a20ff016ccab (12 x Stealc, 1 x UACModuleSmokeLoader)
ssdeep 6144:xH1aphP6ZxqlnU3ijOJj58v9X6/7rYlce7nVElm2Et6pd:xVanaIlnUBKvF64lVXupd
TLSH T1FAA4AF0362F47C54E56287728E3EF6F4361DF9608E957B27220ABA6F10B81F1E263751
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 182c2a40c4a04800 (4 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 :
292
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e.exe
Verdict:
Malicious activity
Analysis date:
2024-04-28 09:25:04 UTC
Tags:
loader stealc stealer hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/11fe8f50-7878-463e-b1b9-776a587ad109

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
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint packed
Link:
https://www.filescan.io/uploads/662e12a954bafb7d21e36039/reports/36068eba-ed0f-4c34-9227-64acdc583e99/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e
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/a0f8f416-524f-408a-8c0b-010c3628960a
Result
Threat name:
Mars Stealer, RedLine, SectopRAT, Stealc
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1432828
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
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 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 browser information (history, passwords, etc)
Writes to foreign memory regions
Yara detected Mars stealer
Yara detected RedLine Stealer
Yara detected SectopRAT
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: 1432828 Sample: 18DMYiGAhb.exe Startdate: 28/04/2024 Architecture: WINDOWS Score: 100 71 note.padd.cn.com 2->71 73 fp2e7a.wpc.phicdn.net 2->73 75 2 other IPs or domains 2->75 99 Snort IDS alert for network traffic 2->99 101 Found malware configuration 2->101 103 Malicious sample detected (through community Yara rule) 2->103 105 15 other signatures 2->105 9 18DMYiGAhb.exe 2 10 2->9         started        14 run.exe 2->14         started        16 chrome.exe 1 2->16         started        18 chrome.exe 2->18         started        signatures3 process4 dnsIp5 87 185.172.128.203, 49731, 80 NADYMSS-ASRU Russian Federation 9->87 89 185.172.128.228, 49730, 80 NADYMSS-ASRU Russian Federation 9->89 91 note.padd.cn.com 176.97.76.106, 49732, 80 INTRAFFIC-ASUA United Kingdom 9->91 61 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->61 dropped 63 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->63 dropped 65 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 9->65 dropped 67 C:\Users\user\AppData\Local\Temp\u54w.0.exe, PE32 9->67 dropped 127 Detected unpacking (overwrites its own PE header) 9->127 20 run.exe 6 9->20         started        24 u54w.0.exe 12 9->24         started        27 WerFault.exe 21 16 9->27         started        69 C:\Users\user\AppData\Local\Temp\449b0b62, DOS 14->69 dropped 129 Maps a DLL or memory area into another process 14->129 131 Found direct / indirect Syscall (likely to bypass EDR) 14->131 29 cmd.exe 14->29         started        93 192.168.2.4, 138, 15647, 443 unknown unknown 16->93 95 239.255.255.250 unknown Reserved 16->95 31 chrome.exe 16->31         started        33 chrome.exe 16->33         started        35 chrome.exe 18->35         started        file6 signatures7 process8 dnsIp9 51 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 20->51 dropped 53 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 20->53 dropped 55 C:\Users\user\AppData\Local\Temp\302a12e5, DOS 20->55 dropped 107 Maps a DLL or memory area into another process 20->107 109 Found direct / indirect Syscall (likely to bypass EDR) 20->109 37 cmd.exe 4 20->37         started        77 185.172.128.76, 49733, 49765, 49770 NADYMSS-ASRU Russian Federation 24->77 111 Detected unpacking (changes PE section rights) 24->111 113 Detected unpacking (overwrites its own PE header) 24->113 115 Machine Learning detection for dropped file 24->115 119 2 other signatures 24->119 57 C:\Users\user\AppData\Local\Temp\lbxwbyea, PE32 29->57 dropped 117 Writes to foreign memory regions 29->117 41 conhost.exe 29->41         started        43 MSBuild.exe 29->43         started        79 www.google.com 142.250.31.106, 443, 49734, 49738 GOOGLEUS United States 31->79 81 plus.l.google.com 31->81 83 apis.google.com 31->83 85 172.253.115.147, 443, 49769 GOOGLEUS United States 33->85 file10 signatures11 process12 file13 59 C:\Users\user\AppData\...\xvjiefhatktohs, PE32 37->59 dropped 121 Writes to foreign memory regions 37->121 123 Found hidden mapped module (file has been removed from disk) 37->123 125 Maps a DLL or memory area into another process 37->125 45 MSBuild.exe 6 37->45         started        49 conhost.exe 37->49         started        signatures14 process15 dnsIp16 97 91.215.85.66, 15647, 49766 PINDC-ASRU Russian Federation 45->97 133 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 45->133 135 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 45->135 137 Tries to harvest and steal browser information (history, passwords, etc) 45->137 signatures17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e/
Threat name:
Win32.Trojan.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-04-28 09:11:05 UTC
File Type:
PE (Exe)
Extracted files:
64
AV detection:
15 of 23 (65.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=in5ayo2zgsgq4hek6pnkv5hrhrsk3noyf5v6b2nui7vg2j5qprxa._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/240428-k5la5sce91/
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
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/e9a63a13-87b6-4173-bc97-69b5a8d422bd/
SH256 hash:
437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e
MD5 hash:
840ed5daff93eba0ccd7e6c7889e1f3f
SHA1 hash:
e428d086416f0717f7624074115b6a22eb907d15
Link:
https://www.unpac.me/results/e9a63a13-87b6-4173-bc97-69b5a8d422bd/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/437a0c3b5934/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/437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e

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 437a0c3b59348d0e1c8af3daaaf4f13c64adb5d82f6be0e9b447ea6d27b07c6e

(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::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