MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0effaa167297f1300685fe2d7e887bdb98e7c9c05bb6133a739fce685a5714d3. 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: 11


Intelligence 11 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0effaa167297f1300685fe2d7e887bdb98e7c9c05bb6133a739fce685a5714d3
SHA3-384 hash: 0c36d681078bbd5c94ee5ac7d7f21b953af990be0a01299bd99a675ba683676bf63ac5876ae39303742fff75bf46b451
SHA1 hash: eef766496c0f0b899d2c2f8228e8145372cb2f25
MD5 hash: f033b971f91df6e65996ba78cc70bf68
humanhash: jersey-apart-potato-magnesium
File name:ThumbnailExtractionHost.EXE
Download: download sample
Signature BlankGrabber
Create hunting rule
File size:7'680'300 bytes
First seen:2023-09-27 21:16:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 20d446c1cb128febd23deb17efb67cf6 (11 x BlankGrabber, 5 x CrealStealer, 5 x ValleyRAT)
ssdeep 196608:QukFS66OshoKMuIkhVastRL5Di3uq1D7mB:QFS/OshouIkPftRL54DRo
Threatray 17 similar samples on MalwareBazaar
TLSH T1EB763311B3A56CE9F991923EC186C621DB33395523E0D58B07A847B21F272AD4C3BF4B
TrID 89.2% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
4.7% (.EXE) Win64 Executable (generic) (10523/12/4)
2.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
0.9% (.ICL) Windows Icons Library (generic) (2059/9)
0.9% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter smica83
Tags:BlankGrabber exe HUN

Intelligence

File Origin
# of uploads :
1
# of downloads :
301
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ThumbnailExtractionHost.EXE
Verdict:
No threats detected
Analysis date:
2023-09-27 21:16:38 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1b6c969f-78ba-4192-8022-3ca025d12e59

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
BlankStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/451682/
Detection(s):
SecuriteInfo.com.Python.Muldrop.16.1683.12379.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Restart of the analyzed sample
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
DNS request
Launching a process
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Sending an HTTP GET request
Sending a custom TCP request
Creating a file
Reading critical registry keys
Creating a window
Launching the process to change network settings
Stealing user critical data
Adding an exclusion to Microsoft Defender
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control expand greyware lolbin masquerade overlay packed
Link:
https://www.filescan.io/uploads/65149bcf32ffdb7a7a169e62/reports/e46f314e-3137-4bf0-9f0b-da7918e22bfd/overview
Verdict:
Malicious
Labled as:
Lazy.Generic
Link:
https://www.hybrid-analysis.com/sample/0effaa167297f1300685fe2d7e887bdb98e7c9c05bb6133a739fce685a5714d3
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/76c2e687-f8c3-4add-9f71-e057193a8229
Result
Threat name:
Blank Grabber
Create hunting rule
Detection:
malicious
Classification:
rans.troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1315562
Signature
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
DLL side loading technique detected
Drops PE files to the startup folder
Drops PE files with a suspicious file extension
Encrypted powershell cmdline option found
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
May check the online IP address of the machine
Modifies existing user documents (likely ransomware behavior)
Modifies Windows Defender protection settings
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential dropper URLs found in powershell memory
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Removes signatures from Windows Defender
Sigma detected: Capture Wi-Fi password
Sigma detected: Dot net compiler compiles file from suspicious location
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal WLAN passwords
Uses cmd line tools excessively to alter registry or file data
Uses netsh to modify the Windows network and firewall settings
Very long command line found
Writes or reads registry keys via WMI
Yara detected Blank Grabber
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1315562 Sample: ThumbnailExtractionHost.EXE.exe Startdate: 27/09/2023 Architecture: WINDOWS Score: 100 95 Found malware configuration 2->95 97 Antivirus detection for URL or domain 2->97 99 Antivirus detection for dropped file 2->99 101 6 other signatures 2->101 10 ThumbnailExtractionHost.EXE.exe 22 2->10         started        process3 file4 55 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 10->55 dropped 57 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32+ 10->57 dropped 59 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 10->59 dropped 61 16 other malicious files 10->61 dropped 119 Very long command line found 10->119 121 May check the online IP address of the machine 10->121 123 Drops PE files with a suspicious file extension 10->123 125 5 other signatures 10->125 14 ThumbnailExtractionHost.EXE.exe 1 87 10->14         started        signatures5 process6 dnsIp7 73 discord.com 162.159.137.232, 443, 49816 CLOUDFLARENETUS United States 14->73 75 ip-api.com 208.95.112.1, 49805, 49815, 80 TUT-ASUS United States 14->75 77 blank-lkcpf.in 14->77 65 C:\ProgramData\Microsoft\Windows\...\???.scr, PE32+ 14->65 dropped 67 C:\Users\user\AppData\...\LSBIHQFDVT.xlsx, ASCII 14->67 dropped 69 C:\Users\user\AppData\...behaviorgraphAOBCVIQIJ.xlsx, ASCII 14->69 dropped 71 C:\Users\user\AppData\...\BJZFPPWAPT.mp3, ASCII 14->71 dropped 79 Very long command line found 14->79 81 Found many strings related to Crypto-Wallets (likely being stolen) 14->81 83 Tries to harvest and steal browser information (history, passwords, etc) 14->83 85 5 other signatures 14->85 19 cmd.exe 1 14->19         started        22 cmd.exe 14->22         started        24 cmd.exe 1 14->24         started        26 31 other processes 14->26 file8 signatures9 process10 signatures11 103 Suspicious powershell command line found 19->103 105 Very long command line found 19->105 107 Uses cmd line tools excessively to alter registry or file data 19->107 117 2 other signatures 19->117 44 2 other processes 19->44 109 Encrypted powershell cmdline option found 22->109 28 powershell.exe 22->28         started        31 conhost.exe 22->31         started        111 Modifies Windows Defender protection settings 24->111 33 powershell.exe 19 24->33         started        36 conhost.exe 24->36         started        113 Adds a directory exclusion to Windows Defender 26->113 115 Tries to harvest and steal WLAN passwords 26->115 38 getmac.exe 26->38         started        40 WMIC.exe 26->40         started        42 WMIC.exe 26->42         started        46 55 other processes 26->46 process12 file13 63 C:\Users\user\AppData\...\gwgsmuib.cmdline, Unicode 28->63 dropped 48 csc.exe 28->48         started        87 Potential dropper URLs found in powershell memory 33->87 89 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 38->89 91 Writes or reads registry keys via WMI 38->91 93 DLL side loading technique detected 40->93 signatures14 process15 file16 53 C:\Users\user\AppData\Local\...\gwgsmuib.dll, PE32 48->53 dropped 51 cvtres.exe 48->51         started        process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0effaa167297f1300685fe2d7e887bdb98e7c9c05bb6133a739fce685a5714d3/
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-09-27 16:13:11 UTC
File Type:
PE+ (Exe)
Extracted files:
373
AV detection:
16 of 23 (69.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=b372uftss7ytabuf7ywx5cd33omopsoalo3bgottt7hgqwsxctjq._file
Verdict:
unknown
Similar samples:
15dd97919ebcb246add4fc9e9b201bdd67da510c79f8d89cb4edc7fbf64858fa
BlankGrabber
1ccc641022b3e95b4eaa3339f8d980bf1b606ca8d4f529c98f8d7d2762515b85
BlankGrabber
27f599038343d5433f51dcff77ecf7f72256b21829e96b9ce71a7241466f0a7e
BlankGrabber
2aecab4d8aabdedc75c03cfc858047dea40c2022430a282dac70b0b6a1d67947
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3fae6735a44f901db80b039a624ec9658ef680e3606d14867b94b56bc1b0a9f6
BlankGrabber
60ee0d0e9f0799545b6d1739f6554a1591bf62c6efaee94f48fea42e7d4e4f1f
BlankGrabber
61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6
BlankGrabber
91c4fc7399536afef7e77c46cf58ab032bf47bae62c5a156631ec04a8d269bd8
BlankGrabber
c37494daa1a9c3b20e3f19414e25907b598b45be7ae5486d144b28a98ade3aa3
BlankGrabber
d2803b97a3cdb1787df9e3bd60818968fecb86bf7eb48bfa51e0757f055b95e4
BlankGrabber
+ 7 additional samples on MalwareBazaar
Result
Malware family:
blankgrabber
Create hunting rule
Score:
  10/10
Tags:
family:blankgrabber upx
Link:
https://tria.ge/reports/230927-z413jaed2z/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates processes with tasklist
Suspicious behavior: EnumeratesProcesses
Loads dropped DLL
UPX packed file
Unpacked files
SH256 hash:
0effaa167297f1300685fe2d7e887bdb98e7c9c05bb6133a739fce685a5714d3
MD5 hash:
f033b971f91df6e65996ba78cc70bf68
SHA1 hash:
eef766496c0f0b899d2c2f8228e8145372cb2f25
Link:
https://www.unpac.me/results/984ec19a-4a49-4941-878e-eecd9928d5c4/
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/0effaa167297f1300685fe2d7e887bdb98e7c9c05bb6133a739fce685a5714d3

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: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:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_KB_CERT_00bfb15001bbf592d4962a7797ea736fa3
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked, fake or invalid certificate
Reference:https://capesandbox.com/analysis/444899/
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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Cape
Cape
https://www.capesandbox.com/analysis/451682/

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