MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115. 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: 17


Intelligence 17 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115
SHA3-384 hash: 5ab402f7935d3b555624aadcd35693201788c2268ad4b2b14ca8e4d60d70cdd5dbe7a7a522f4957df2ed6bb724e3afc9
SHA1 hash: 94fe1a59213d6cb266e5e6b8761b9b7a45512e1f
MD5 hash: 8b6693a9fd8f3a9ca63e933c7e1284bc
humanhash: cardinal-hotel-ceiling-seven
File name:a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:3'521'024 bytes
First seen:2023-10-25 21:25:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 49152:Q5qWhABbYQFw/3MywBAfm079cyxuc5BhBKiJ+av9kgzr0dt1cOZaX:ZWhEywBgm0OQ5BhkivHr0bps
TLSH T11AF58C03BA878BB9C149D737C6DB061443A4DBB17323D61A798F236A19433BB5B49327
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://matthewsamuel.top/3886d2276f6914c4.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
353
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
amadey
Create hunting rule
ID:
1
File name:
59CDED2FFA027C24F0768677AA76BF1E.exe
Verdict:
Malicious activity
Analysis date:
2023-10-25 20:18:51 UTC
Tags:
stealc stealer amadey botnet trojan loader smoke
Link:
https://app.any.run/tasks/3bc20701-2b5a-43de-aea4-c85c2c70eefd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Rhadamanthys
Create hunting rule
Link:
https://www.capesandbox.com/analysis/456387/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.18950.32411.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Launching a process
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/653987ebb38131f117a827d2/reports/da26d701-9190-475a-a54a-04da01a5d530/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115
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:
CinaRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8939540c-adac-43a6-9b46-42618a71c7e1
Result
Threat name:
RHADAMANTHYS, SmokeLoader, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1332232
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Checks if the current machine is a virtual machine (disk enumeration)
Creates a thread in another existing process (thread injection)
Creates autostart registry keys with suspicious names
Creates files in the recycle bin to hide itself
Creates files inside the volume driver (system volume information)
Deletes itself after installation
Deletes shadow drive data (may be related to ransomware)
Deletes the backup plan of Windows
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
DLL side loading technique detected
Drops PE files to the startup folder
Found evasive API chain (may stop execution after checking locale)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
May disable shadow drive data (uses vssadmin)
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Overwrites Mozilla Firefox settings
Performs DNS queries to domains with low reputation
Sigma detected: Delete shadow copy via WMIC
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses bcdedit to modify the Windows boot settings
Uses netsh to modify the Windows network and firewall settings
Writes many files with high entropy
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected RHADAMANTHYS Stealer
Yara detected SmokeLoader
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1332232 Sample: a75e3f3e506051b9e4313a407c2... Startdate: 25/10/2023 Architecture: WINDOWS Score: 100 97 servermlogs27.xyz 2->97 99 matthewsamuel.top 2->99 101 3 other IPs or domains 2->101 121 Snort IDS alert for network traffic 2->121 123 Found malware configuration 2->123 125 Malicious sample detected (through community Yara rule) 2->125 127 13 other signatures 2->127 15 a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec.exe 3 2->15         started        18 stfdbrv 2->18         started        20 wbengine.exe 2->20         started        22 2 other processes 2->22 signatures3 process4 signatures5 171 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 15->171 173 Injects a PE file into a foreign processes 15->173 24 a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec.exe 1 15->24         started        27 a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec.exe 15->27         started        29 a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec.exe 15->29         started        31 stfdbrv 18->31         started        175 Creates files inside the volume driver (system volume information) 20->175 process6 dnsIp7 103 amxt25.xyz 45.131.66.61, 49713, 49718, 49719 LOVESERVERSGB Germany 24->103 34 certreq.exe 4 24->34         started        177 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 31->177 179 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 31->179 181 Maps a DLL or memory area into another process 31->181 183 2 other signatures 31->183 signatures8 process9 file10 77 C:\Users\user\AppData\Local\...\qm]ZlHR.exe, PE32 34->77 dropped 79 C:\Users\user\AppData\Local\...\JKbqt.exe, PE32 34->79 dropped 81 C:\Users\user\AppData\Local\...\{3t16WP.exe, PE32 34->81 dropped 129 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 34->129 131 Tries to steal Mail credentials (via file / registry access) 34->131 133 Found many strings related to Crypto-Wallets (likely being stolen) 34->133 135 3 other signatures 34->135 38 qm]ZlHR.exe 3 34->38         started        41 JKbqt.exe 55 34->41         started        45 conhost.exe 34->45         started        47 {3t16WP.exe 34->47         started        signatures11 process12 dnsIp13 137 Injects a PE file into a foreign processes 38->137 49 qm]ZlHR.exe 38->49         started        52 qm]ZlHR.exe 38->52         started        54 qm]ZlHR.exe 38->54         started        111 matthewsamuel.top 37.139.129.88, 49720, 49721, 49722 LVLT-10753US Germany 41->111 89 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 41->89 dropped 91 C:\Users\user\AppData\...\softokn3[1].dll, PE32 41->91 dropped 93 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 41->93 dropped 95 9 other files (none is malicious) 41->95 dropped 139 Detected unpacking (changes PE section rights) 41->139 141 Detected unpacking (overwrites its own PE header) 41->141 143 Tries to steal Mail credentials (via file / registry access) 41->143 145 4 other signatures 41->145 file14 signatures15 process16 signatures17 113 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 49->113 115 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 49->115 117 Maps a DLL or memory area into another process 49->117 119 2 other signatures 49->119 56 explorer.exe 49->56 injected process18 dnsIp19 105 amx435.xyz 193.31.28.64 QUICKPACKETUS United Kingdom 56->105 107 servermlogs27.xyz 45.131.66.120 LOVESERVERSGB Germany 56->107 109 files.catbox.moe 108.181.20.35 ASN852CA Canada 56->109 83 C:\Users\user\AppData\Roaming\stfdbrv, PE32 56->83 dropped 85 C:\Users\user\AppData\Local\Temp\9E4D.exe, PE32 56->85 dropped 87 C:\Users\user\AppData\Roaming\hdtijrt, data 56->87 dropped 149 System process connects to network (likely due to code injection or exploit) 56->149 151 Benign windows process drops PE files 56->151 153 Injects code into the Windows Explorer (explorer.exe) 56->153 155 3 other signatures 56->155 61 9E4D.exe 56->61         started        64 explorer.exe 56->64         started        66 explorer.exe 56->66         started        68 4 other processes 56->68 file20 signatures21 process22 signatures23 157 Drops PE files to the startup folder 61->157 159 Writes many files with high entropy 61->159 161 Injects a PE file into a foreign processes 61->161 70 9E4D.exe 61->70         started        163 System process connects to network (likely due to code injection or exploit) 64->163 165 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 64->165 167 Tries to steal Mail credentials (via file / registry access) 64->167 169 Tries to harvest and steal browser information (history, passwords, etc) 66->169 process24 process25 72 9E4D.exe 70->72         started        signatures26 147 Injects a PE file into a foreign processes 72->147 75 9E4D.exe 72->75         started        process27
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115/
Threat name:
Win32.Trojan.Smokeloader
Create hunting rule
Status:
Suspicious
First seen:
2023-10-25 21:27:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=u5pd6psqmbi3tzbrhjahykuzh6owmkquf4xmmjs633fbmui3yekq._file
Verdict:
malicious
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:ammyyadmin family:phobos family:rhadamanthys family:smokeloader backdoor bootkit collection discovery evasion persistence ransomware rat spyware stealer trojan
Link:
https://tria.ge/reports/231025-z96vzage91/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
outlook_office_path
outlook_win_path
Checks SCSI registry key(s)
Checks processor information in registry
Delays execution with timeout.exe
Interacts with shadow copies
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Enumerates physical storage devices
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Drops desktop.ini file(s)
Writes to the Master Boot Record (MBR)
Checks computer location settings
Deletes itself
Drops startup file
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Deletes backup catalog
Downloads MZ/PE file
Modifies Windows Firewall
Deletes shadow copies
Modifies boot configuration data using bcdedit
Renames multiple (365) files with added filename extension
Renames multiple (70) files with added filename extension
Ammyy Admin
AmmyyAdmin payload
Detect rhadamanthys stealer shellcode
Phobos
Rhadamanthys
SmokeLoader
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
http://servermlogs27.xyz/statweb255/
http://servmblog45.xyz/statweb255/
http://demblog575.xyz/statweb255/
http://admlogs85x.xyz/statweb255/
http://blogmstat389.xyz/statweb255/
http://blogmstat255.xyz/statweb255/
Unpacked files
SH256 hash:
a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115
MD5 hash:
8b6693a9fd8f3a9ca63e933c7e1284bc
SHA1 hash:
94fe1a59213d6cb266e5e6b8761b9b7a45512e1f
Link:
https://www.unpac.me/results/9e87cfa1-25b0-4e21-a0bc-5800d923f140/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a75e3f3e5060/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/a75e3f3e506051b9e4313a407c2a993f9d662a142f2ec6265edeca16511bc115

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:BruteSyscallHashes
Create hunting rule
Author:Embee_Research @ Huntress
Rule name:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_bruteratel_syscall_hashes_oct_2022
Create hunting rule
Author:Embee_Research @ Huntress
Description:Detection of Brute Ratel Badger via api hashes of Nt* functions.
Rule name:win_brute_ratel_c4_w0
Create hunting rule
Author:Embee_Research @ Huntress
Rule name:win_Brute_Syscall_Hashes
Create hunting rule
Author:Embee_Research @ Huntress
Description:Detection of Brute Ratel Badger via api hashes of Nt* functions.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/456387/

Comments