MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373. 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


BlankGrabber


Vendor detections: 15


Intelligence 15 IOCs YARA 20 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373
SHA3-384 hash: 883822539783341109c460f035ceb9f2702ca9dfe6ea77d4c8f99a78f21392811063ea86561a69436eae7067fb0ab9cd
SHA1 hash: d4c6406f3de0eb0a98ef7d33440f7a920b6e9fca
MD5 hash: 72fcadf5196585dce72e2982da60fae6
humanhash: venus-fifteen-two-two
File name:72fcadf5196585dce72e2982da60fae6
Download: download sample
Signature BlankGrabber
Create hunting rule
File size:6'931'456 bytes
First seen:2024-03-06 00:24:05 UTC
Last seen:2024-03-06 02:27:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 196608:YFAzFI0lsRlaQVM4vtsV5iyihCKqEkQt:oAI0mFVMG4EhTqEtt
TLSH T1DC66338EA60E16F3F9CF863BC8FA06661450B02E51C117D69EF8A6748F0BF978747644
TrID 56.5% (.EXE) Win64 Executable (generic) (10523/12/4)
11.0% (.ICL) Windows Icons Library (generic) (2059/9)
10.9% (.EXE) OS/2 Executable (generic) (2029/13)
10.7% (.EXE) Generic Win/DOS Executable (2002/3)
10.7% (.EXE) DOS Executable Generic (2000/1)
Reporter zbetcheckin
Tags:64 BlankGrabber exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
601
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
xmrig
Create hunting rule
ID:
1
File name:
b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373.exe
Verdict:
Malicious activity
Analysis date:
2024-03-06 00:25:17 UTC
Tags:
pureloader purecrypter loader miner zgrat pureminer evasion blankgrabber stealer python xmrig
Link:
https://app.any.run/tasks/0da35825-e75c-4d83-a39e-d24858e6fcca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.RATX-gen.10787.15861.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a file
Running batch commands
Creating a file in the %AppData% subdirectories
DNS request
Connection attempt
Using the Windows Management Instrumentation requests
Creating a process with a hidden window
Sending a custom TCP request
Reading critical registry keys
Searching for synchronization primitives
Creating a window
Launching the process to change network settings
Stealing user critical data
Unauthorized injection to a system process
Enabling autorun by creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed smartassembly smart_assembly
Link:
https://www.filescan.io/uploads/65e7b7e083aa71d5c14556cc/reports/50aabf44-25d9-4974-88d7-c71484776cdb/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373
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:
Suspicious
Link:
https://analyze.intezer.com/analyses/83311eb4-2a8c-4274-93b9-8a1e71342f20
Result
Threat name:
Blank Grabber, PureLog Stealer, Xmrig, z
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1403773
Signature
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for dropped file
Bypasses PowerShell execution policy
Connects to many ports of the same IP (likely port scanning)
Detected Stratum mining protocol
Encrypted powershell cmdline option found
Found many strings related to Crypto-Wallets (likely being stolen)
Found strings related to Crypto-Mining
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)
Modifies the context of a thread in another process (thread injection)
Modifies Windows Defender protection settings
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potentially malicious time measurement code found
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Query firmware table information (likely to detect VMs)
Removes signatures from Windows Defender
Sigma detected: Capture Wi-Fi password
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Powershell Defender Disable Scan Feature
Sigma detected: Rar Usage with Password and Compression Level
Sigma detected: Suspicious Encoded PowerShell Command Line
Sigma detected: Suspicious PowerShell Encoded Command Patterns
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Xmrig
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal WLAN passwords
Tries to steal Crypto Currency Wallets
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Very long command line found
Writes or reads registry keys via WMI
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Blank Grabber
Yara detected Costura Assembly Loader
Yara detected PureLog Stealer
Yara detected Telegram RAT
Yara detected Xmrig cryptocurrency miner
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1403773 Sample: JOXwK3xz8r.exe Startdate: 06/03/2024 Architecture: WINDOWS Score: 100 109 dksj.wi-fi.rip 2->109 111 ip-api.com 2->111 113 discord.com 2->113 123 Sigma detected: Xmrig 2->123 125 Malicious sample detected (through community Yara rule) 2->125 127 Sigma detected: Capture Wi-Fi password 2->127 129 18 other signatures 2->129 12 JOXwK3xz8r.exe 4 2->12         started        16 ddfdfdsf.exe 2->16         started        18 ddfdfdsf.exe 2->18         started        signatures3 process4 file5 107 C:\Users\user\AppData\Local\Temp\Built.exe, PE32+ 12->107 dropped 185 Writes to foreign memory regions 12->185 187 Allocates memory in foreign processes 12->187 189 Modifies the context of a thread in another process (thread injection) 12->189 20 Built.exe 22 12->20         started        24 cmd.exe 2 12->24         started        26 vbc.exe 16 2 12->26         started        37 2 other processes 12->37 191 Multi AV Scanner detection for dropped file 16->191 193 Injects a PE file into a foreign processes 16->193 29 cmd.exe 16->29         started        31 cmd.exe 16->31         started        33 cmd.exe 16->33         started        35 vbc.exe 16->35         started        signatures6 process7 dnsIp8 91 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 20->91 dropped 93 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32+ 20->93 dropped 95 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 20->95 dropped 99 16 other malicious files 20->99 dropped 131 Antivirus detection for dropped file 20->131 133 Very long command line found 20->133 135 Machine Learning detection for dropped file 20->135 151 3 other signatures 20->151 39 Built.exe 1 88 20->39         started        137 Suspicious powershell command line found 24->137 139 Encrypted powershell cmdline option found 24->139 141 Bypasses PowerShell execution policy 24->141 153 4 other signatures 24->153 43 conhost.exe 24->43         started        119 dksj.wi-fi.rip 185.196.10.233, 39001, 49729, 49730 SIMPLECARRIERCH Switzerland 26->119 121 51.81.115.24, 49731, 80 OVHFR United States 26->121 143 Found many strings related to Crypto-Wallets (likely being stolen) 26->143 145 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 26->145 147 Found strings related to Crypto-Mining 26->147 155 3 other signatures 26->155 45 AddInProcess.exe 26->45         started        47 AddInProcess.exe 26->47         started        49 AddInProcess.exe 26->49         started        55 2 other processes 29->55 51 conhost.exe 31->51         started        53 conhost.exe 33->53         started        97 C:\Users\user\AppData\...\ddfdfdsf.exe, PE32+ 37->97 dropped 57 6 other processes 37->57 file9 149 Detected Stratum mining protocol 119->149 signatures10 process11 dnsIp12 115 ip-api.com 208.95.112.1, 49820, 80 TUT-ASUS United States 39->115 117 discord.com 162.159.128.233, 443, 49822 CLOUDFLARENETUS United States 39->117 157 Very long command line found 39->157 159 Found many strings related to Crypto-Wallets (likely being stolen) 39->159 161 Tries to harvest and steal browser information (history, passwords, etc) 39->161 165 6 other signatures 39->165 59 cmd.exe 39->59         started        62 cmd.exe 39->62         started        64 cmd.exe 39->64         started        66 23 other processes 39->66 163 Query firmware table information (likely to detect VMs) 45->163 signatures13 process14 signatures15 171 Very long command line found 59->171 173 Encrypted powershell cmdline option found 59->173 68 powershell.exe 59->68         started        71 conhost.exe 59->71         started        73 getmac.exe 62->73         started        76 conhost.exe 62->76         started        175 Modifies Windows Defender protection settings 64->175 177 Removes signatures from Windows Defender 64->177 179 Suspicious powershell command line found 66->179 181 Adds a directory exclusion to Windows Defender 66->181 183 Tries to harvest and steal WLAN passwords 66->183 78 systeminfo.exe 66->78         started        80 rar.exe 66->80         started        82 conhost.exe 66->82         started        84 43 other processes 66->84 process16 file17 101 C:\Users\user\AppData\...\jzatgiwp.cmdline, Unicode 68->101 dropped 86 csc.exe 68->86         started        167 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 73->167 169 Writes or reads registry keys via WMI 73->169 103 C:\Users\user\AppData\Local\Temp\ZzYZb.zip, RAR 80->103 dropped signatures18 process19 file20 105 C:\Users\user\AppData\Local\...\jzatgiwp.dll, PE32 86->105 dropped 89 cvtres.exe 86->89         started        process21
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-03-06 00:25:06 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
4
AV detection:
8 of 38 (21.05%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wppsedoh5xauhvrqzvdtacsplks4nuhmjfacbeqebbf7jcapunzq._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:xmrig family:zgrat miner rat spyware stealer upx
Link:
https://tria.ge/reports/240306-aqly1seg88/
Behaviour
Creates scheduled task(s)
Detects videocard installed
Enumerates processes with tasklist
Gathers system information
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
UPX packed file
Uses the VBS compiler for execution
XMRig Miner payload
Detect ZGRat V1
ZGRat
xmrig
Unpacked files
SH256 hash:
b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373
MD5 hash:
72fcadf5196585dce72e2982da60fae6
SHA1 hash:
d4c6406f3de0eb0a98ef7d33440f7a920b6e9fca
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/3a7d308f-a22e-41ca-9d16-cfbea9b7c97e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3df220dc7ed/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/b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__ConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:ldpreload
Create hunting rule
Author:xorseed
Reference:https://stuff.rop.io/
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:WHIRLPOOL_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for WhirlPool constants

File information

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

Web download

BlankGrabber

Executable exe b3df220dc7edc143d630cd47300a4f5aa5c6d0ec4940209204084bf4880fa373

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2776251/

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

Comments


Avatar
zbet commented on 2024-03-06 00:24:07 UTC

url : hxxp://51.81.115.24/custorun23.exe