MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b22d591b5b5e0df440369831ce403f2297f2d1f83d528d76868ccbe07017017. 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: 18


Intelligence 18 IOCs YARA 10 File information Comments 1

SHA256 hash: 1b22d591b5b5e0df440369831ce403f2297f2d1f83d528d76868ccbe07017017
SHA3-384 hash: ebc903965a9fc6c82f2bb3cfebc65689496c602a585f17238bbb20ef7ef626bfae4acc0eebe78424a9def8f0e9fa9a5b
SHA1 hash: 850d1bfe3b602d8e5120e6f1094149f38be2f9cb
MD5 hash: 8f709d3db81945c2261c46827a83d33b
humanhash: fanta-one-sodium-beer
File name:8f709d3db81945c2261c46827a83d33b
Download: download sample
Signature Stealc
File size:283'648 bytes
First seen:2024-06-09 12:50:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a5671fdd5aa96d4d73299420034eb00a (1 x Stealc)
ssdeep 3072:F/wSTIBzLCqwCM2PjtffBiVBqzTV3NQe4iY+HoN8xi25A:FY5ZLCqdzt3a8N9J4irH28x2
TLSH T17554BE1135E9D432CD5247328860CAA15BBABD336EB6814F77943A3E9F332E0662534B
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 01bad4d4c9d0d4c4 (1 x UACModuleSmokeLoader, 1 x Stealc)
Reporter zbetcheckin
Tags:32 exe Stealc

Intelligence


File Origin
# of uploads :
1
# of downloads :
425
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1b22d591b5b5e0df440369831ce403f2297f2d1f83d528d76868ccbe07017017.exe
Verdict:
Malicious activity
Analysis date:
2024-06-09 12:51:14 UTC
Tags:
stealer stealc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
92.5%
Tags:
Infostealer Network Stealth Malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
epmicrosoft_visual_cc fingerprint microsoft_visual_cc
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.
Result
Threat name:
Mars Stealer, Stealc, Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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 evasive API chain (may stop execution after checking mutex)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Found stalling execution ending in API Sleep call
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
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)
Yara detected Mars stealer
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1454224 Sample: Qiv6UE0Veq.exe Startdate: 09/06/2024 Architecture: WINDOWS Score: 100 33 15.164.165.52.in-addr.arpa 2->33 47 Snort IDS alert for network traffic 2->47 49 Multi AV Scanner detection for domain / URL 2->49 51 Found malware configuration 2->51 53 13 other signatures 2->53 8 Qiv6UE0Veq.exe 58 2->8         started        signatures3 process4 dnsIp5 35 185.172.128.170, 49731, 80 NADYMSS-ASRU Russian Federation 8->35 37 185.172.128.159, 49734, 80 NADYMSS-ASRU Russian Federation 8->37 23 C:\Users\user\AppData\...behaviorgraphCGCFCBAKK.exe, PE32 8->23 dropped 25 C:\Users\user\AppData\Local\...\tiktok[1].exe, PE32 8->25 dropped 27 C:\Users\user\AppData\...\softokn3[1].dll, PE32 8->27 dropped 29 11 other files (7 malicious) 8->29 dropped 55 Detected unpacking (changes PE section rights) 8->55 57 Detected unpacking (overwrites its own PE header) 8->57 59 Tries to steal Mail credentials (via file / registry access) 8->59 61 7 other signatures 8->61 13 cmd.exe 1 8->13         started        15 WerFault.exe 21 16 8->15         started        file6 signatures7 process8 file9 18 GCGCFCBAKK.exe 13->18         started        21 conhost.exe 13->21         started        31 C:\ProgramData\Microsoft\...\Report.wer, Unicode 15->31 dropped process10 signatures11 39 Antivirus detection for dropped file 18->39 41 Multi AV Scanner detection for dropped file 18->41 43 Found evasive API chain (may stop execution after checking mutex) 18->43 45 Found stalling execution ending in API Sleep call 18->45
Threat name:
Win32.Trojan.Generic
Status:
Malicious
First seen:
2024-06-08 20:08:01 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
24 of 38 (63.16%)
Threat level:
  2/5
Verdict:
malicious
Result
Malware family:
Score:
  10/10
Tags:
family:stealc botnet:default12 discovery spyware stealer
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
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
Stealc
Malware Config
C2 Extraction:
http://185.172.128.170
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
231cbd43f1c105fe8494d1c8f5801f250ae629288bae3bea7fddf7c84430c1a8
MD5 hash:
b7336017be8dc75ec8ea3bddb434a8c6
SHA1 hash:
9f2add480b9c46043423b7b4cd7d78bf825e3c70
Detections:
stealc win_stealc_auto
SH256 hash:
1b22d591b5b5e0df440369831ce403f2297f2d1f83d528d76868ccbe07017017
MD5 hash:
8f709d3db81945c2261c46827a83d33b
SHA1 hash:
850d1bfe3b602d8e5120e6f1094149f38be2f9cb
Please note that we are no longer able to provide a coverage score for Virus Total.

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:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_Mars_Stealer
Author:@malgamy12
Description:detect_Mars_Stealer
Rule name:infostealer_win_stealc_standalone
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
Rule name:maldoc_find_kernel32_base_method_1
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_Stealc_str
Author:JPCERT/CC Incident Response Group
Description:Stealc infostealer
Rule name:Windows_Trojan_Generic_2993e5a5
Author:Elastic Security
Rule name:Windows_Trojan_Stealc_b8ab9ab5
Author:Elastic Security
Rule name:win_stealc_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stealc.
Rule name:win_stealc_w0
Author:crep1x
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/

File information


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

Web download

Stealc

Executable exe 1b22d591b5b5e0df440369831ce403f2297f2d1f83d528d76868ccbe07017017

(this sample)

  
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 ThreadsADVAPI32.dll::SetThreadToken
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindNextVolumeW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetStartupInfoA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleOutputA
KERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetConsoleCursorInfo
KERNEL32.dll::SetConsoleTitleW
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA
KERNEL32.dll::SetVolumeMountPointA
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW

Comments



Avatar
zbet commented on 2024-06-09 12:50:02 UTC

url : hxxp://185.172.128.159//timeSync.exe