MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee
SHA3-384 hash: c74857aabe7c88d6e6bbd08af5ee58c55f9fad763344551c8dfeb30b4fd1c6a0244d799408593ee212d0da8d62051d27
SHA1 hash: c64677ddce626f7b343ee2aee0deb369dd21e0df
MD5 hash: d76c718ada43477786ef9ca3bba29842
humanhash: three-asparagus-vegan-leopard
File name:file
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:155'648 bytes
First seen:2024-07-23 04:13:43 UTC
Last seen:2024-07-24 10:34:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 5d80776960e8ce41e325ecce5b0a696b (1 x Stealc, 1 x Smoke Loader)
ssdeep 3072:BPfLv9CAlRi9gEj5scaFYcPn5I858ioma:tLv9f+/mtCiK
Threatray 2'376 similar samples on MalwareBazaar
TLSH T109E3AD117E90C032CC1A43766A29CAB52629BC70DBB5858F7B95FF5FDE332A04626347
TrID 39.5% (.EXE) InstallShield setup (43053/19/16)
28.6% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
9.6% (.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)
File icon (PE):PE icon
dhash icon 9671e896dcd0d4ec (1 x Smoke Loader)
Reporter Bitsight
Tags:exe Smoke Loader


Avatar
Bitsight
url: https://coe.com.vn/tmp/2.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
429
Origin country :
US US
Vendor Threat Intelligence
Detection(s):
Win.Packed.Smokeloader-10033583-0
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=669f2e0c2f6eaff4b90f389a
Tags:
Network Stealth
Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee
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:
Unknown
Link:
https://analyze.intezer.com/analyses/1eb81cba-48a1-460f-8e57-cf62d134362a
Result
Threat name:
SmokeLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1478859
Signature
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Changes memory attributes in foreign processes to executable or writable
Check for Windows Defender sandbox
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)
Creates autostart registry keys with suspicious names
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)
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
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines)
Sigma detected: New RUN Key Pointing to Suspicious Folder
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)
Writes to foreign memory regions
Yara detected SmokeLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1478859 Sample: file.exe Startdate: 23/07/2024 Architecture: WINDOWS Score: 100 38 mussangroup.com 2->38 40 gebeus.ru 2->40 42 evilos.cc 2->42 58 Multi AV Scanner detection for domain / URL 2->58 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 7 other signatures 2->64 9 file.exe 2->9         started        12 ajjwvsd 2->12         started        signatures3 process4 signatures5 74 Detected unpacking (changes PE section rights) 9->74 76 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 9->76 78 Maps a DLL or memory area into another process 9->78 86 3 other signatures 9->86 14 explorer.exe 108 6 9->14 injected 80 Multi AV Scanner detection for dropped file 12->80 82 Machine Learning detection for dropped file 12->82 84 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 12->84 process6 dnsIp7 44 mussangroup.com 185.149.100.242, 443, 49731 VERIDYENVeridyenBilisimTeknolojileriSanayiveTicaretLi Turkey 14->44 46 64.190.113.113, 49727, 80 TRAVELCLICKCORP1US United States 14->46 48 7 other IPs or domains 14->48 32 C:\Users\user\AppData\Roaming\ajjwvsd, PE32 14->32 dropped 34 C:\Users\user\AppData\Local\Temp\C9F5.exe, PE32+ 14->34 dropped 36 C:\Users\user\...\ajjwvsd:Zone.Identifier, ASCII 14->36 dropped 50 System process connects to network (likely due to code injection or exploit) 14->50 52 Benign windows process drops PE files 14->52 54 Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines) 14->54 56 5 other signatures 14->56 19 C9F5.exe 1 14->19         started        22 C9F5.exe 1 14->22         started        24 C9F5.exe 1 14->24         started        file8 signatures9 process10 signatures11 66 Check for Windows Defender sandbox 19->66 68 Machine Learning detection for dropped file 19->68 70 Changes memory attributes in foreign processes to executable or writable 19->70 72 3 other signatures 19->72 26 conhost.exe 19->26         started        28 conhost.exe 22->28         started        30 conhost.exe 24->30         started        process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee
Detection:
smokeloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee/
Threat name:
Win32.Trojan.SmokeLoader
Create hunting rule
Status:
Malicious
First seen:
2024-07-23 04:14:05 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=56qdvsl5fp24aaqk5dmqzuuxppwmzi4p4u4u255euvecvamq4txa._file
Verdict:
malicious
Similar samples:
02eb002f33af51183396e8406bc7518c01c4b2f3b326d227fef6bc7e3c8fd1a6
Smoke Loader
247eb6cc11d0a92ac985fb99c19dcfe4779878f4989764b8ced06727820ff57c
Smoke Loader
50ca2730d4feb93b8d6cf986a86b34912d83c10dd7d7259d3538d415c904af73
Smoke Loader
5c88a340b3b0502c9777fe6159f01d66875341dc739e23a56a21ee18479890f2
Smoke Loader
a73ee8f46c7caf4da7ea6a92dc0a11d58757a83e1b5b9c3723b49690fc238271
Smoke Loader
e629fcf41de2187cafd4c8c38b1e9408a5c521d29459971bb96fae5da26fa9d5
Smoke Loader
efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee
Smoke Loader
f518307808486c2718cd6b83e4e5f012e3531c8d352abd6d51b7311fcfa2c28c
Smoke Loader
f662b3ef913a9bfb62cb970e6f8f8e81ad75b21deaccffc01cbc1390f34e776e
Smoke Loader
+ 2'366 additional samples on MalwareBazaar
Result
Malware family:
smokeloader
Create hunting rule
Score:
  10/10
Tags:
family:smokeloader botnet:pub2 backdoor trojan
Link:
https://tria.ge/reports/240723-etndgaxamf/
Behaviour
Checks SCSI registry key(s)
Program crash
SmokeLoader
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a3f5dca0-5f11-496c-a3b1-6458288daf1d
Unpacked files
SH256 hash:
71a037f50013ea3d027ca8e3705ff6af2d28bb2a990c668fa1d3cce14d16c67a
MD5 hash:
8076765b0ac9d281a4fa2c8f30808b26
SHA1 hash:
5edeee2a17b45bd4b11c1ba16b324a6e963bf3a1
Detections:
SmokeLoaderStage2
Create hunting rule
win_smokeloader_a2
Create hunting rule
Link:
https://www.unpac.me/results/303aa0f1-fe22-40b9-ad34-fba234ae8f1f/
Parent samples :
1e7fb39c52ba502920d98374e0cdf8a2447c737bd0b88c06839e81be3a751688
92d74f895798a56cdd1e0b416730e995eaa193ef2ed3fb7855936326019dd93d
7e92a078f6f875b189bc4b2bca87f4f737eb2048356a51a1962f359b645d1b0f
2bf758ec68ee38fb0e7bc577e3f8f0e3be2da66e73ccfb1328b8da6a496840c9
d6d251f8dc5e403b7b00d5de2831e411e91dccf2a1ebdec794a9ca6210f90487
f82a12fabe1bd6370497ec34c93c8d7045cf35ce4ad4e9586f1a532018b0e7fd
9276c8c7d62e48aa9fdb4f5ab57c0f9a5edf0c8d2827ab7ac7653c9bdb52a40b
fa40f7525b8d3be33bf8b4adfa328d55c7cfb54c6b3b6fe6b24789f71bed7890
677e267b67c4d11df74cda41f59b44cd8169f1dcc5b2fb02dadadf4d4d3409fc
4b0f269efd1980ba9756c1d161e425fa41024e37ab85aa93119dbf9cb44d2fe6
efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee
SH256 hash:
efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee
MD5 hash:
d76c718ada43477786ef9ca3bba29842
SHA1 hash:
c64677ddce626f7b343ee2aee0deb369dd21e0df
Link:
https://www.unpac.me/results/303aa0f1-fe22-40b9-ad34-fba234ae8f1f/
Malware family:
SmokeLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/efa03ac97d2b/report/overview.html
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
Create hunting rule
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

Smoke Loader

Executable exe efa03ac97d2bf5c0020ae8d90cd2977beccca38fe5394d77a4a5482a8190e4ee

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3052257/
  
URLhaus
https://urlhaus.abuse.ch/url/2948289/
  
URLhaus
https://urlhaus.abuse.ch/url/3052315/

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::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindFirstVolumeA
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetStartupInfoA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::WriteConsoleA
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasesW
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA
KERNEL32.dll::SetVolumeMountPointA

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