MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782
SHA3-384 hash: 9939d5f08738f643b8afcd26667f1991bdc992924de989349bbca073bdf3a5ead77f477d79acc871cd91f94254f1c2ef
SHA1 hash: 4912d98edf4676e1057e264c0d11144c02cbafe7
MD5 hash: 7640b8ba64d42f407d11bb8a978d3139
humanhash: echo-angel-louisiana-equal
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:420'864 bytes
First seen:2024-03-11 12:43:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6c5fed3ce811af811c7238293e3a6194 (1 x Smoke Loader, 1 x Stealc)
ssdeep 6144:I2iE/b2f4ccVO8Hktq+HYN6ytcoE2Nmxwv3EtG31rfyTlfVw3h0x/e2CC8vly:lCc0H4N6ytdN4wvsGZfFo/e2CCGy
Threatray 20 similar samples on MalwareBazaar
TLSH T1E894F103BAF1C470F5A386325C30C95456BFBCB25EB48A8B3789371E69712D16E26763
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 0810121844e08000 (1 x Stealc)
Reporter jstrosch
Tags:exe Stealc


Avatar
jstrosch
Found at hxxp://185.172.128[.]126/InstallSetup_three.exe by #subcrawl

Intelligence

File Origin
# of uploads :
1
# of downloads :
319
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782.exe
Verdict:
Malicious activity
Analysis date:
2024-03-11 12:46:52 UTC
Tags:
loader stealer stealc
Link:
https://app.any.run/tasks/b04e59cb-e40e-478f-899d-95bc5de530eb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/478513/
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connecting to a non-recommended domain
Connection attempt
Sending an HTTP GET request
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a file
Creating a window
Searching for synchronization primitives
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Creating a file in the %AppData% subdirectories
Running batch commands
Creating a process with a hidden window
Launching a process
Changing a file
Moving a file to the Program Files subdirectory
Replacing files
Connection attempt to an infection source
Stealing user critical data
Sending an HTTP GET request to an infection source
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint lolbin shell32
Link:
https://www.filescan.io/uploads/65eefc9787137159d43c3986/reports/110e6488-fb28-4082-8835-398a50615f4f/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782
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/0d790a03-f928-41ee-b906-9665ac13b28c
Result
Threat name:
Mars Stealer, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1406581
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Overwrites Mozilla Firefox settings
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected Mars stealer
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1406581 Sample: file.exe Startdate: 11/03/2024 Architecture: WINDOWS Score: 100 51 Snort IDS alert for network traffic 2->51 53 Multi AV Scanner detection for domain / URL 2->53 55 Found malware configuration 2->55 57 9 other signatures 2->57 8 file.exe 1 3 2->8         started        process3 dnsIp4 43 185.172.128.90, 49700, 80 NADYMSS-ASRU Russian Federation 8->43 45 185.172.128.126, 49703, 80 NADYMSS-ASRU Russian Federation 8->45 47 185.172.128.187, 49701, 49702, 80 NADYMSS-ASRU Russian Federation 8->47 31 C:\Users\user\AppData\Local\Temp\u5mo.1.exe, PE32 8->31 dropped 33 C:\Users\user\AppData\Local\Temp\u5mo.0.exe, PE32 8->33 dropped 61 Detected unpacking (changes PE section rights) 8->61 63 Detected unpacking (overwrites its own PE header) 8->63 13 u5mo.0.exe 65 8->13         started        18 u5mo.1.exe 2 5 8->18         started        file5 signatures6 process7 dnsIp8 49 185.172.128.145, 49704, 80 NADYMSS-ASRU Russian Federation 13->49 35 C:\Users\user\AppData\...\softokn3[1].dll, PE32 13->35 dropped 37 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 13->37 dropped 39 C:\Users\user\AppData\...\mozglue[1].dll, PE32 13->39 dropped 41 9 other files (5 malicious) 13->41 dropped 65 Detected unpacking (changes PE section rights) 13->65 67 Detected unpacking (overwrites its own PE header) 13->67 69 Tries to steal Mail credentials (via file / registry access) 13->69 73 9 other signatures 13->73 20 WerFault.exe 19 16 13->20         started        71 Multi AV Scanner detection for dropped file 18->71 22 cmd.exe 1 18->22         started        file9 signatures10 process11 signatures12 59 Uses schtasks.exe or at.exe to add and modify task schedules 22->59 25 conhost.exe 22->25         started        27 schtasks.exe 1 22->27         started        29 chcp.com 1 22->29         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782/
Threat name:
Win32.Trojan.StealC
Create hunting rule
Status:
Malicious
First seen:
2024-03-11 12:44:09 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jfnuk6h67q3shxykmnadkcm7ka7bb3zqqomhhzgheqqgchh3q6ba._file
Verdict:
malicious
Similar samples:
1a557fae2d39d06392f4bea760fb72c87f0959a7c3ac66865e36f316866f57d3
Stealc
2d5f186a3d1303fe97b7fd87b2dad17051bdd17123259a06cb01e740c9dfdf70
Stealc
6505124e089a5b658c16cc831297438239ad47a3b06a1e817880fb7edd19a1ef
Stealc
8ad20c4b4c312feb468a58d1748c0d7abba3dd2d0fb8e6bfbee837c47a0e8c5a
Stealc
9643edaedb1e0b2075c9d608e12477727015706f3fe670283d84fb7dae49c88d
Stealc
a863912b539cb57887b41e05ac11e17298bac7565c6c715b33fe287590848d5d
Stealc
e5be6b01b31232f0ec0059be780fd0c20cea2d8e0450c9ed30dbe8e5b789d21a
Stealc
+ 10 additional samples on MalwareBazaar
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc discovery spyware stealer upx
Link:
https://tria.ge/reports/240311-pygftsfb63/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Reads user/profile data of web browsers
UPX packed file
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Downloads MZ/PE file
Stealc
Malware Config
C2 Extraction:
http://185.172.128.145
Unpacked files
SH256 hash:
f747b1dc11b798034f510533eeaa9cb00bfa475319e67b0f3ba246badf495797
MD5 hash:
633afa9d868b2af36eda64fe8af84b23
SHA1 hash:
4be898db52499a3bb88e59887a59aff5208ad14e
Link:
https://www.unpac.me/results/103d6d55-5b82-4a86-97e7-e31bccf075e1/
SH256 hash:
495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782
MD5 hash:
7640b8ba64d42f407d11bb8a978d3139
SHA1 hash:
4912d98edf4676e1057e264c0d11144c02cbafe7
Link:
https://www.unpac.me/results/103d6d55-5b82-4a86-97e7-e31bccf075e1/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/495b4578fefc/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/495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782

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:Borland
Create hunting rule
Author:malware-lu
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:UPXv20MarkusLaszloReiser
Create hunting rule
Author:malware-lu

File information

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

Web download

Stealc

Executable exe 495b4578fefc3723df0a634035099f503e10ef30839873e4c72420611cfb8782

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2765035/
  
URLhaus
https://urlhaus.abuse.ch/url/2777660/
  
URLhaus
https://urlhaus.abuse.ch/url/2765033/
Cape
Cape
https://www.capesandbox.com/analysis/478513/

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
SHELL_APIManipulates System ShellSHELL32.dll::FindExecutableA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindNextVolumeMountPointA
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AddConsoleAliasW
KERNEL32.dll::AttachConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryA
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryW
KERNEL32.dll::RemoveDirectoryA

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