MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45. 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


Smoke Loader


Vendor detections: 16


Intelligence 16 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45
SHA3-384 hash: fd28613e553eee8c9617db9d60f318c119f247f3f9ed96688ba0dce007490b7ca9adf9c021cfac60dbd1d179effce28d
SHA1 hash: e9b584910e84b4af4394d944fd178d2b110c5c96
MD5 hash: 73c5e5058bdb7449f2e38f1c7645b9ad
humanhash: kitten-yankee-rugby-iowa
File name:file
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:301'568 bytes
First seen:2024-04-12 04:12:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 37d5d9e9c6c8829366c7450bc2f82d1d (1 x Smoke Loader)
ssdeep 3072:VOeQ/4QgHDEGn6R3U23Kc+m+vNR2T+wtkeJleNMnIVzwlxyMBzfSz+RDRn/7Yoi:1XEzk23p9iVwtTkMnJlwMBzfhxh/7e
Threatray 142 similar samples on MalwareBazaar
TLSH T11E548D0272D1A873E6738772DE6996A4673DFCF14E757B2B33485E1F05B00A0D622B62
TrID 37.3% (.EXE) Win64 Executable (generic) (10523/12/4)
17.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
15.9% (.EXE) Win32 Executable (generic) (4504/4/1)
7.3% (.ICL) Windows Icons Library (generic) (2059/9)
7.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 000c18480a0b0600 (1 x Smoke Loader)
Reporter Bitsight
Tags:exe Smoke Loader


Avatar
Bitsight
url: http://wikkt.com/forum/index.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
369
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45.exe
Verdict:
Malicious activity
Analysis date:
2024-04-12 04:15:00 UTC
Tags:
loader smokeloader
Link:
https://app.any.run/tasks/d4bb1681-d977-4185-985d-e0f0b6f9fbb3

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

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Connection attempt to an infection source
DNS request
Connection attempt
Sending an HTTP POST request
Sending a custom TCP request
Query of malicious DNS domain
Unauthorized injection to a system process
Enabling autorun by creating a file
Sending an HTTP POST request to an infection source
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint packed
Link:
https://www.filescan.io/uploads/6618b4cfe824d2f0c7c2e63b/reports/1f5c6bcb-c87c-41dd-8ba7-a37611c92f4b/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/39f63405-9156-4b69-b2ec-348de58a9f44
Result
Threat name:
PureLog Stealer, SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1424872
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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)
Deletes itself after installation
Detected unpacking (changes PE section rights)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: PowerShell DownloadFile
Sigma detected: Set autostart key via New-ItemProperty Cmdlet
Snort IDS alert for network traffic
Suspicious powershell command line found
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 download and execute files (via powershell)
Yara detected Costura Assembly Loader
Yara detected PureLog Stealer
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1424872 Sample: file.exe Startdate: 12/04/2024 Architecture: WINDOWS Score: 100 65 nidoe.org 2->65 67 trello.com 2->67 77 Snort IDS alert for network traffic 2->77 79 Multi AV Scanner detection for domain / URL 2->79 81 Found malware configuration 2->81 83 14 other signatures 2->83 12 file.exe 2->12         started        15 ijraavw 2->15         started        signatures3 process4 signatures5 117 Detected unpacking (changes PE section rights) 12->117 119 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 12->119 121 Maps a DLL or memory area into another process 12->121 129 2 other signatures 12->129 17 explorer.exe 100 6 12->17 injected 123 Antivirus detection for dropped file 15->123 125 Multi AV Scanner detection for dropped file 15->125 127 Machine Learning detection for dropped file 15->127 process6 dnsIp7 59 109.98.58.98, 49762, 49763, 49764 RTDBucharestRomaniaRO Romania 17->59 61 nidoe.org 92.36.226.66, 49712, 49713, 49714 BIHNETBIHNETAutonomusSystemBA Bosnia and Herzegowina 17->61 63 trello.com 18.238.49.86, 443, 49720, 49726 AMAZON-02US United States 17->63 51 C:\Users\user\AppData\Roaming\ijraavw, PE32 17->51 dropped 53 C:\Users\user\AppData\Local\Temp\2BFC.exe, PE32 17->53 dropped 55 C:\Users\user\...\ijraavw:Zone.Identifier, ASCII 17->55 dropped 85 System process connects to network (likely due to code injection or exploit) 17->85 87 Benign windows process drops PE files 17->87 89 Deletes itself after installation 17->89 91 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->91 22 2BFC.exe 2 17->22         started        25 RuntimeBroker2.exe 17->25         started        27 RuntimeBroker2.exe 17->27         started        file8 signatures9 process10 signatures11 99 Multi AV Scanner detection for dropped file 22->99 101 Machine Learning detection for dropped file 22->101 103 Adds a directory exclusion to Windows Defender 22->103 29 2BFC.exe 22->29         started        105 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 25->105 process12 signatures13 131 Adds a directory exclusion to Windows Defender 29->131 32 cmd.exe 1 29->32         started        process14 signatures15 71 Suspicious powershell command line found 32->71 73 Tries to download and execute files (via powershell) 32->73 75 Adds a directory exclusion to Windows Defender 32->75 35 powershell.exe 15 33 32->35         started        39 conhost.exe 32->39         started        process16 file17 57 C:\Users\user\AppData\...\RuntimeBroker2.exe, PE32 35->57 dropped 93 Suspicious powershell command line found 35->93 95 Loading BitLocker PowerShell Module 35->95 97 Powershell drops PE file 35->97 41 RuntimeBroker2.exe 35->41         started        45 powershell.exe 23 35->45         started        47 powershell.exe 35->47         started        49 2 other processes 35->49 signatures18 process19 dnsIp20 69 38.180.95.205, 5885 COGENT-174US United States 41->69 107 Antivirus detection for dropped file 41->107 109 Multi AV Scanner detection for dropped file 41->109 111 Machine Learning detection for dropped file 41->111 113 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 41->113 115 Loading BitLocker PowerShell Module 45->115 signatures21
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45
Detection:
smokeloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-04-12 04:13:07 UTC
File Type:
PE (Exe)
Extracted files:
25
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2zy3c6x3tysf4yuyepom2yoxqjl56aedj6zld6uughdehhdc7vcq._file
Verdict:
malicious
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+ 132 additional samples on MalwareBazaar
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:smokeloader botnet:pub3 backdoor trojan
Link:
https://tria.ge/reports/240412-es3rrshf7x/
Behaviour
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Uses Task Scheduler COM API
Deletes itself
SmokeLoader
Malware Config
C2 Extraction:
http://nidoe.org/tmp/index.php
http://sodez.ru/tmp/index.php
http://uama.com.ua/tmp/index.php
http://talesofpirates.net/tmp/index.php
Unpacked files
SH256 hash:
f2380c9c7ebf5be61444882b40a85dccb6790b14877bcc8c4e1d39f3bc89d683
MD5 hash:
ffc4c4b2e33bc7a54671352f724ab869
SHA1 hash:
01d94427bee5a9a2d0bcbbd3af807ad8591e2eb9
Detections:
SmokeLoaderStage2
Create hunting rule
win_smokeloader_a2
Create hunting rule
Link:
https://www.unpac.me/results/07803320-a7f8-40cc-8c8b-4c3860f699c7/
Parent samples :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 hash:
d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45
MD5 hash:
73c5e5058bdb7449f2e38f1c7645b9ad
SHA1 hash:
e9b584910e84b4af4394d944fd178d2b110c5c96
Link:
https://www.unpac.me/results/07803320-a7f8-40cc-8c8b-4c3860f699c7/
Malware family:
SmokeLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d671b17afb9e/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/d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45

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
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:EXE_Stealer_StealC_Feb2024
Create hunting rule
Author:Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Generic_2993e5a5
Create hunting rule
Author:Elastic Security

File information

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

Web download

Smoke Loader

Executable exe d671b17afb9e245e629823dccd61d78257df00834fb2b1fa9431c6439c62fd45

(this sample)

  
Dropped by
Privateloader
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2809766/

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_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::VirtualAllocEx
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindFirstVolumeMountPointA
KERNEL32.dll::FindNextVolumeA
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleInputW
KERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::ReadConsoleInputW
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::GetFileAttributesW
KERNEL32.dll::RemoveDirectoryA
WIN_HTTP_APIUses HTTP servicesWINHTTP.dll::WinHttpReadData

Comments