MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907. 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: 12


Intelligence 12 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907
SHA3-384 hash: 471d5f59434c7ad32a6d63502be19ee8a33bef81e2a1ad58907a520aac1dd4d601f3d4a8c9ba0974e839a67cb11212c0
SHA1 hash: 3dbc9d8677625c8182f6def189b9ac1f59859734
MD5 hash: f2b994a20f79bea57c2dc9d9003f58bc
humanhash: spring-missouri-pip-triple
File name:Nota1893.exe
Download: download sample
Signature RustyStealer
Create hunting rule
File size:2'844'344 bytes
First seen:2024-11-19 19:32:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f0b60cd0ebc38d8e4e4c7740cad62812 (2 x RustyStealer)
ssdeep 49152:vzQHDp6x3GKA8gaTX2B+xTTeYpQeh5NafuDVUUG:/T0e9aqVdG
TLSH T1D0D51A217B8A89ADC45AC0B4C24B8BB2697170CB0F34B9FF458496793E79AF51F3C254
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter johnk3r
Tags:154-205-156-20 api-computadoratualizacao-com exe gerenciador2020 latam mesh-computadoratualizacao-com RAT RustyStealer signed

Code Signing Certificate

Organisation:Amidaware Inc.
Issuer:Amidaware Inc.
Algorithm:sha256WithRSAEncryption
Valid from:2024-11-15T16:25:45Z
Valid to:2025-11-15T16:25:45Z
Serial number: 24cf343b844cb0786946587088f6be655b10cd27
Intelligence: 3 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:SHA256
Thumbprint: add1a84c9560b1935790c500f11fa4f9e375d422ede5e62f5904bc72f3acfaf8
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
423
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Nota1893.exe
Verdict:
Malicious activity
Analysis date:
2024-11-19 19:34:26 UTC
Tags:
rust
Link:
https://app.any.run/tasks/bad7b316-ae6d-480e-9fa2-41ea172397ad

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=673ce89dcfd863d78e8978e2
Tags:
vmdetect gumen
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Running batch commands
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
Creating a window
Searching for synchronization primitives
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Creating a process with a hidden window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug expand lolbin microsoft_visual_cc monero packed packer_detected powershell
Link:
https://www.filescan.io/uploads/673ce7ef7a6ae3d44b9f988c/reports/9e74be08-d90e-4abf-8c73-67eca427861c/overview
Verdict:
Suspicious
Labled as:
Malware_47.7
Link:
https://www.hybrid-analysis.com/sample/e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907
Malware family:
RustyStealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/260bef8d-5522-49fd-b8f6-107d44d3a25c
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1558814
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Multi AV Scanner detection for dropped file
Opens network shares
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Script Execution From Temp Folder
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1558814 Sample: Nota1893.exe Startdate: 19/11/2024 Architecture: WINDOWS Score: 88 49 adsklbb.org 2->49 51 raw.githubusercontent.com 2->51 53 2 other IPs or domains 2->53 65 Suricata IDS alerts for network traffic 2->65 67 AI detected suspicious sample 2->67 69 Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet 2->69 71 Sigma detected: Suspicious Script Execution From Temp Folder 2->71 10 Nota1893.exe 2 2->10         started        14 d0msa9fUeW.exe 2->14         started        17 d0msa9fUeW.exe 2->17         started        signatures3 process4 dnsIp5 61 github.com 140.82.121.4, 443, 49733 GITHUBUS United States 10->61 63 raw.githubusercontent.com 185.199.110.133, 443, 49736 FASTLYUS Netherlands 10->63 47 C:\Users\user\AppData\...\d0msa9fUeW.exe, PE32 10->47 dropped 19 cmd.exe 1 10->19         started        21 cmd.exe 1 10->21         started        89 Multi AV Scanner detection for dropped file 14->89 91 Machine Learning detection for dropped file 14->91 file6 signatures7 process8 signatures9 24 d0msa9fUeW.exe 1 17 19->24         started        29 conhost.exe 19->29         started        31 timeout.exe 1 19->31         started        73 Suspicious powershell command line found 21->73 33 powershell.exe 23 21->33         started        35 conhost.exe 21->35         started        process10 dnsIp11 55 adsklbb.org 24.152.39.13, 49741, 55417 MasterDaWebBR unknown 24->55 57 api64.ipify.org 173.231.16.77, 49739, 80 WEBNXUS United States 24->57 59 154.205.156.20, 49740, 80 IKGUL-26484US Seychelles 24->59 45 C:\Users\user\AppData\...\d0msa9fUeW.exe, PE32 24->45 dropped 79 Multi AV Scanner detection for dropped file 24->79 81 Machine Learning detection for dropped file 24->81 83 Adds a directory exclusion to Windows Defender 24->83 85 Opens network shares 24->85 37 cmd.exe 1 24->37         started        87 Loading BitLocker PowerShell Module 33->87 file12 signatures13 process14 signatures15 75 Adds a directory exclusion to Windows Defender 37->75 40 powershell.exe 23 37->40         started        43 conhost.exe 37->43         started        process16 signatures17 77 Loading BitLocker PowerShell Module 40->77
Score:
90%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4ivhu64ibeejftzzh7lf3rg22i5lhze5fjjwkqziwrdolescbedq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/241119-x9hf9s1hkk/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ef35017c-96a3-4131-bcbf-8b304dbe8f34
Unpacked files
SH256 hash:
e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907
MD5 hash:
f2b994a20f79bea57c2dc9d9003f58bc
SHA1 hash:
3dbc9d8677625c8182f6def189b9ac1f59859734
Link:
https://www.unpac.me/results/25573b5d-c317-4c4e-9092-0ee698549c2e/
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/e22a7a7b88090892cf393fd65dc4dad23ab3e49d2a53654328b446e592420907

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
Create hunting rule
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
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:Rustyloader_mem_loose
Create hunting rule
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

  
X
https://x.com/malwrhunterteam/status/1858775106547310667

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)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::CreateProcessW
kernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryA
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WriteConsoleW
kernel32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileW
ntdll.dll::NtCreateFile
ntdll.dll::NtDeviceIoControlFile
kernel32.dll::GetWindowsDirectoryW
kernel32.dll::GetSystemDirectoryW
kernel32.dll::GetFileAttributesW
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