MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f48f98dd52f2c7fb93e6f41403c767371ebf16290c25dfc3a0990b4c83870a59. 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



RustyStealer


Vendor detections: 11


Intelligence 11 IOCs YARA 5 File information Comments 1

SHA256 hash: f48f98dd52f2c7fb93e6f41403c767371ebf16290c25dfc3a0990b4c83870a59
SHA3-384 hash: 6a40620bbf94eb56406012ab4317a7a57ca88e4c29ecba5fd1c76c616cd29494324e8a190123420752abc0212b601288
SHA1 hash: 9d45224537c8cae5f90b0230215a0163ccff7d4f
MD5 hash: 7d5dfe91cfb6107463625c6c9506bb5e
humanhash: ohio-alabama-papa-cold
File name:7d5dfe91cfb6107463625c6c9506bb5e
Download: download sample
Signature RustyStealer
File size:2'910'208 bytes
First seen:2024-04-17 11:35:11 UTC
Last seen:2024-04-17 12:40:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1d589303777bbaa8685babdc003b2dad (3 x RustyStealer, 1 x AgentTesla)
ssdeep 49152:Uaj1gng7AABTrOzW1GCP7dpLcRgad2cOrzO:1jP2qzO
Threatray 23 similar samples on MalwareBazaar
TLSH T1A0D518117B4A99ADC05AC4B082478B626A717CCA0B35BAFF4584B5343F7AAF51F3C358
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 59592b6e07830e06 (3 x RustyStealer, 2 x AsyncRAT)
Reporter zbetcheckin
Tags:64 exe RustyStealer

Intelligence


File Origin
# of uploads :
2
# of downloads :
296
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f48f98dd52f2c7fb93e6f41403c767371ebf16290c25dfc3a0990b4c83870a59.exe
Verdict:
Malicious activity
Analysis date:
2024-04-17 11:49:23 UTC
Tags:
n/a

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

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching a process
Creating a window
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Creating a file in the mass storage device
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug
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:
AsyncRAT, XWorm
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AsyncRAT
Yara detected Generic Downloader
Yara detected Telegram RAT
Yara detected XWorm
Behaviour
Behavior Graph:
Threat name:
Win64.Trojan.Generic
Status:
Suspicious
First seen:
2024-04-06 16:36:37 UTC
File Type:
PE+ (Exe)
Extracted files:
2
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Unpacked files
SH256 hash:
f48f98dd52f2c7fb93e6f41403c767371ebf16290c25dfc3a0990b4c83870a59
MD5 hash:
7d5dfe91cfb6107463625c6c9506bb5e
SHA1 hash:
9d45224537c8cae5f90b0230215a0163ccff7d4f
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:command_and_control
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:reverse_http
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:Rustyloader_mem_loose
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24
Rule name:SEH__vectored
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information


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

Web download

RustyStealer

Executable exe f48f98dd52f2c7fb93e6f41403c767371ebf16290c25dfc3a0990b4c83870a59

(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 (FORCE_INTEGRITY)high
Reviews
IDCapabilitiesEvidence
SS_APIUses SS APIsecur32.dll::AcceptSecurityContext
secur32.dll::AcquireCredentialsHandleA
secur32.dll::ApplyControlToken
secur32.dll::DecryptMessage
secur32.dll::DeleteSecurityContext
secur32.dll::QueryContextAttributesW
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::WriteProcessMemory
kernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryA
kernel32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WriteConsoleW
kernel32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create Filesntdll.dll::NtCreateFile
ntdll.dll::NtDeviceIoControlFile
kernel32.dll::FindFirstFileW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptGenRandom
WIN_CRYPT_APIUses Windows Crypt APIcrypt32.dll::CertAddCertificateContextToStore
crypt32.dll::CertDuplicateCertificateChain
crypt32.dll::CertDuplicateCertificateContext
crypt32.dll::CertDuplicateStore
crypt32.dll::CertEnumCertificatesInStore
crypt32.dll::CertFreeCertificateChain
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyExW
advapi32.dll::RegQueryValueExW
WIN_SOCK_APIUses Network to send and receive dataws2_32.dll::bind
ws2_32.dll::closesocket
ws2_32.dll::connect
ws2_32.dll::freeaddrinfo
ws2_32.dll::getaddrinfo
ws2_32.dll::getpeername

Comments



Avatar
zbet commented on 2024-04-17 11:35:11 UTC

url : hxxp://86.68.222.14/Mise.a.jour1.exe