MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede
SHA3-384 hash: d1b2b52b45a6b86fe2456be32b52d536be12eac7f0639a981e9981150effd817974f7da4fe81e74f6515636704a0d699
SHA1 hash: 2c8cab92f0a9429b9c5972f68d910653a579aab5
MD5 hash: 01519db4280c18b8ccd58235bf5a4048
humanhash: kilo-dakota-arizona-oven
File name:file
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:1'073'664 bytes
First seen:2024-07-27 05:27:36 UTC
Last seen:2024-07-27 06:23:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:Ssev3eWwqcUGHH8jIK26ng84AYGG8FEPrPQ81G+ITK:ef+qEHRLb8OSFMrPTG+Ie
Threatray 2 similar samples on MalwareBazaar
TLSH T19735F110976DAB1AE39E6374E359A82C8BF0930B334BF31CBDD5A8655C42F209B49177
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter Bitsight
Tags:exe Smoke Loader


Avatar
Bitsight
url: http://mktrex155.xyz/ldx111.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
375
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2991.7304.803.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a48566fb0026d1138aaafb
Tags:
Execution Network Stealth Smoke Loader
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed smokeloader
Link:
https://www.filescan.io/uploads/66a485649149fd55f9913ca8/reports/654863c0-dcc7-4c7c-9026-ef0831f50734/overview
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/cedc304f-306f-438a-b82f-4951c017cff1
Result
Threat name:
SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
bank.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1483385
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
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 browser processes are running
Checks if the current machine is a virtual machine (disk enumeration)
Contains functionality to compare user and computer (likely to detect sandboxes)
Creates a thread in another existing process (thread injection)
Creates files with lurking names (e.g. Crack.exe)
Deletes itself after installation
Drops PE files with a suspicious file extension
Found evasive API chain (may stop execution after checking mutex)
Found malware configuration
Found stalling execution ending in API Sleep call
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects code into the Windows Explorer (explorer.exe)
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
Performs DNS queries to domains with low reputation
Sigma detected: Search for Antivirus process
Switches to a custom stack to bypass stack traces
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 harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1483385 Sample: file.exe Startdate: 27/07/2024 Architecture: WINDOWS Score: 100 109 serverlogs275.xyz 2->109 111 mktrex155.xyz 2->111 139 Multi AV Scanner detection for domain / URL 2->139 141 Found malware configuration 2->141 143 Malicious sample detected (through community Yara rule) 2->143 147 10 other signatures 2->147 11 file.exe 5 2->11         started        14 ttugwbi 5 2->14         started        signatures3 145 Performs DNS queries to domains with low reputation 111->145 process4 signatures5 167 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->167 169 Switches to a custom stack to bypass stack traces 11->169 16 file.exe 11->16         started        19 cmd.exe 1 11->19         started        21 cmd.exe 1 11->21         started        171 Machine Learning detection for dropped file 14->171 23 ttugwbi 14->23         started        25 cmd.exe 14->25         started        27 cmd.exe 14->27         started        29 4 other processes 14->29 process6 signatures7 119 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 16->119 121 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 16->121 123 Maps a DLL or memory area into another process 16->123 31 explorer.exe 45 10 16->31 injected 125 Drops PE files with a suspicious file extension 19->125 36 conhost.exe 19->36         started        38 timeout.exe 1 19->38         started        40 conhost.exe 21->40         started        42 timeout.exe 1 21->42         started        127 Checks if the current machine is a virtual machine (disk enumeration) 23->127 129 Creates a thread in another existing process (thread injection) 23->129 44 conhost.exe 25->44         started        46 timeout.exe 1 25->46         started        48 conhost.exe 27->48         started        50 timeout.exe 27->50         started        process8 dnsIp9 113 serverlogs275.xyz 5.101.179.26, 49736, 49740, 49741 PAGM-ASEE Estonia 31->113 115 51.77.140.74, 49738, 80 OVHFR France 31->115 117 mktrex155.xyz 45.89.127.155, 49737, 80 CCTLD-ITViaMoruzzi1IT Germany 31->117 93 C:\Users\user\AppData\Roaming\ttugwbi, PE32 31->93 dropped 95 C:\Users\user\AppData\Local\Temp\3BF9.exe, PE32 31->95 dropped 97 C:\Users\user\AppData\Local\Temp\1B12.exe, PE32 31->97 dropped 99 2 other malicious files 31->99 dropped 131 System process connects to network (likely due to code injection or exploit) 31->131 133 Benign windows process drops PE files 31->133 135 Injects code into the Windows Explorer (explorer.exe) 31->135 137 3 other signatures 31->137 52 explorer.exe 31->52         started        55 3BF9.exe 31->55         started        58 1B12.exe 31->58         started        60 10 other processes 31->60 file10 signatures11 process12 file13 149 System process connects to network (likely due to code injection or exploit) 52->149 151 Found evasive API chain (may stop execution after checking mutex) 52->151 153 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 52->153 165 3 other signatures 52->165 101 C:\Users\user\AppData\Local\Temp\Regions, COM 55->101 dropped 103 C:\Users\user\AppData\Local\Temp\Crack, 370 55->103 dropped 105 C:\Users\user\AppData\Local\Temp\Basketball, COM 55->105 dropped 155 Found stalling execution ending in API Sleep call 55->155 157 Creates files with lurking names (e.g. Crack.exe) 55->157 62 cmd.exe 55->62         started        159 Multi AV Scanner detection for dropped file 58->159 161 Machine Learning detection for dropped file 58->161 65 cmd.exe 58->65         started        67 cmd.exe 58->67         started        163 Tries to harvest and steal browser information (history, passwords, etc) 60->163 69 cmd.exe 60->69         started        71 cmd.exe 60->71         started        73 RegAsm.exe 60->73         started        signatures14 process15 file16 107 C:\Users\user\AppData\Local\...behaviorgraphained.pif, PE32+ 62->107 dropped 91 10 other processes 62->91 75 conhost.exe 65->75         started        77 timeout.exe 65->77         started        79 conhost.exe 67->79         started        81 timeout.exe 67->81         started        83 conhost.exe 69->83         started        85 timeout.exe 69->85         started        87 conhost.exe 71->87         started        89 timeout.exe 71->89         started        process17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede
Detection:
smokeloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede/
Threat name:
Win32.Trojan.SmokeLoader
Create hunting rule
Status:
Malicious
First seen:
2024-07-27 05:28:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q7z6vmlkjhg3bpp6dedk2xqjrgqfpi5skpzgelp7cjmyn6atv3pa._file
Verdict:
malicious
Similar samples:
2eb9d2a67aa9761b996f932affd2deab03145b56b96cb9f9ceebfbffc9e866a2
Smoke Loader
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:smokeloader backdoor discovery trojan
Link:
https://tria.ge/reports/240727-f5z23ssepg/
Behaviour
Checks SCSI registry key(s)
Delays execution with timeout.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
SmokeLoader
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2f29ed36-e5ba-4bd8-9880-ba81bfd6ac3e
Unpacked files
SH256 hash:
6d606b80d93a5c848eb803b364d6269e78ee8429f29bb327157faca1932d266b
MD5 hash:
042bdd58b9075a7d86036e9465c4796b
SHA1 hash:
eb011986c5bb2fc9ff27698a51cce7e2f89b1994
Link:
https://www.unpac.me/results/1f5d8ecc-c44f-4831-a54c-e5675dd31638/
SH256 hash:
b83d47211d27a7c6f0e5a0e5bc43f5fc9f27578ebfa3ce95b00736aa9e9749c7
MD5 hash:
74ea17cefc30cdc60fa4bd84adcb2031
SHA1 hash:
d90940768873b5365ad26ece4b5a8dd74a4e73be
Detections:
SmokeLoaderStage2
Create hunting rule
win_smokeloader_a2
Create hunting rule
Link:
https://www.unpac.me/results/1f5d8ecc-c44f-4831-a54c-e5675dd31638/
Parent samples :
7e97e6e6ccae12c62ee828a165fc3c0945026440716621d90abc77a1f7fc5c62
2eb9d2a67aa9761b996f932affd2deab03145b56b96cb9f9ceebfbffc9e866a2
87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/1f5d8ecc-c44f-4831-a54c-e5675dd31638/
SH256 hash:
78f73e1734daa918b253517c75971fbb8df773a3d77d02a752e9a0ad1711a677
MD5 hash:
f9d2985aa1c41cca281321fffb5ed424
SHA1 hash:
3a7a58d2dcae2762882357ae34d372744b1dbb9d
Link:
https://www.unpac.me/results/1f5d8ecc-c44f-4831-a54c-e5675dd31638/
SH256 hash:
b6aaee84383013bf290362b639d8f9950334346065ad5b72b22c30bc3fe9933c
MD5 hash:
c709d6a0cbd6e02e9eb6749879534df3
SHA1 hash:
32fde7c3eaa6f4b9fe27995ac18b82bbf8e8a3fd
Link:
https://www.unpac.me/results/1f5d8ecc-c44f-4831-a54c-e5675dd31638/
SH256 hash:
87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede
MD5 hash:
01519db4280c18b8ccd58235bf5a4048
SHA1 hash:
2c8cab92f0a9429b9c5972f68d910653a579aab5
Link:
https://www.unpac.me/results/1f5d8ecc-c44f-4831-a54c-e5675dd31638/
Malware family:
SmokeLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/87f3eab16a49/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/87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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 87f3eab16a49cdb0bdfe1906ad5e0989a057a3b253f2622dff125986f813aede

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3072059/

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 (GUARD_CF)high

Comments