MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 48cad0b375923a4261d1cb82db185c2f31fc73829cfd971ba92164197ecf0d59. 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: 14


Intelligence 14 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 48cad0b375923a4261d1cb82db185c2f31fc73829cfd971ba92164197ecf0d59
SHA3-384 hash: 1e0e76a8dc8fab6b1f1156a572dbfddaaea2156f59fb77948398a6514d068964d0f82b7bbff67f95a30771118e55b6d1
SHA1 hash: 51d18be8810fe47c74de50587a358a12d6fee75e
MD5 hash: 047f125b610be2b862cc90212b5a4698
humanhash: low-floor-speaker-bacon
File name:buildz.exe
Download: download sample
Signature Smoke Loader
Create hunting rule
File size:840'192 bytes
First seen:2022-12-06 07:16:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 42b39fab5d41637093f30a54656028ca (19 x Smoke Loader, 18 x Amadey, 1 x ArkeiStealer)
ssdeep 12288:rucypU8WtCs0AVZEdNB365NREx+P3jr03dAtWl4RpE+7mpN7+d1iqF:r+WtCbAVSdWNl3v03dAsAEKmHZqF
TLSH T1A5051216B190C873D96B50301822DFA946BBBB721674D94B7378166E5EB43C18BF3F0A
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 5c599a3c60c7c850 (18 x Amadey, 14 x Smoke Loader, 1 x ArkeiStealer)
Reporter JAMESWT_WT
Tags:exe Smoke Loader

Intelligence

File Origin
# of uploads :
1
# of downloads :
184
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
buildz.exe
Verdict:
Malicious activity
Analysis date:
2022-12-06 07:19:20 UTC
Tags:
trojan ransomware stop loader stealer vidar
Link:
https://app.any.run/tasks/2198a2ca-011b-4553-8b43-cd75b14eb6ec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
STOP
Create hunting rule
Link:
https://www.capesandbox.com/analysis/343280/
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Sending an HTTP GET request
Creating a file
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Adding an access-denied ACE
Сreating synchronization primitives
Deleting a recently created file
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/638eec7004e0e79bdf411346/reports/a123d633-fb0a-4f58-a30d-4f0d20320e67/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3035c8ea-a0c6-4019-b4e2-77d40366033f
Result
Threat name:
Babuk, Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1129299
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Found ransom note / readme
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Writes a notice file (html or txt) to demand a ransom
Yara detected Babuk Ransomware
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 762020 Sample: buildz.exe Startdate: 06/12/2022 Architecture: WINDOWS Score: 100 54 Snort IDS alert for network traffic 2->54 56 Multi AV Scanner detection for domain / URL 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 7 other signatures 2->60 8 buildz.exe 2->8         started        11 buildz.exe 2->11         started        13 buildz.exe 2->13         started        15 buildz.exe 2->15         started        process3 signatures4 64 Multi AV Scanner detection for dropped file 8->64 66 Machine Learning detection for dropped file 8->66 68 Writes a notice file (html or txt) to demand a ransom 8->68 17 buildz.exe 17 8->17         started        70 Contains functionality to inject code into remote processes 11->70 72 Injects a PE file into a foreign processes 11->72 22 buildz.exe 1 17 11->22         started        24 buildz.exe 13 13->24         started        26 buildz.exe 13 15->26         started        process5 dnsIp6 48 fresherlights.com 210.182.29.70, 49704, 49705, 49706 LGDACOMLGDACOMCorporationKR Korea Republic of 17->48 36 C:\Users\user\_readme.txt, ASCII 17->36 dropped 38 C:\Users\user\...\buildz.exe.mppn (copy), MS-DOS 17->38 dropped 40 C:\Users\user\Desktop\buildz.exe, MS-DOS 17->40 dropped 46 4 other malicious files 17->46 dropped 62 Modifies existing user documents (likely ransomware behavior) 17->62 50 api.2ip.ua 162.0.217.254, 443, 49699, 49700 ACPCA Canada 22->50 42 C:\Users\user\AppData\Local\...\buildz.exe, PE32 22->42 dropped 44 C:\Users\user\...\buildz.exe:Zone.Identifier, ASCII 22->44 dropped 28 buildz.exe 22->28         started        31 icacls.exe 22->31         started        file7 signatures8 process9 signatures10 74 Injects a PE file into a foreign processes 28->74 33 buildz.exe 13 28->33         started        process11 dnsIp12 52 api.2ip.ua 33->52
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/48cad0b375923a4261d1cb82db185c2f31fc73829cfd971ba92164197ecf0d59/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2022-12-06 07:17:11 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jdfnbm3vsi5eeyorzobnwgc4f4y7y44ctt6zog5jefsbs7wpbvmq._file
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:517 discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/221206-h4c72ahf7y/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Detected Djvu ransomware
Djvu Ransomware
Vidar
Malware Config
C2 Extraction:
http://fresherlights.com/test1/get.php
https://t.me/asifrazatg
https://steamcommunity.com/profiles/76561199439929669
Unpacked files
SH256 hash:
f1a76727cb44957ac282efa70feb34ffbdd5196a423fe8717e7e327e1e5db956
MD5 hash:
bc04bbd13a0631a05af25359414c33da
SHA1 hash:
e4259fb515eda709fecedba7cfc0f393019cec2d
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/88b1db07-d188-4c01-95ce-46f801ec0b37/
SH256 hash:
48cad0b375923a4261d1cb82db185c2f31fc73829cfd971ba92164197ecf0d59
MD5 hash:
047f125b610be2b862cc90212b5a4698
SHA1 hash:
51d18be8810fe47c74de50587a358a12d6fee75e
Link:
https://www.unpac.me/results/88b1db07-d188-4c01-95ce-46f801ec0b37/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/48cad0b37592/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/48cad0b375923a4261d1cb82db185c2f31fc73829cfd971ba92164197ecf0d59

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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB

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 48cad0b375923a4261d1cb82db185c2f31fc73829cfd971ba92164197ecf0d59

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/343280/
  
URLhaus
https://urlhaus.abuse.ch/url/2393524/
  
Delivery method
Distributed via web download

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