MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6. 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 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6
SHA3-384 hash: a2fd81cbef66da7078ae8a30236396b168288d962f51f0a185f254d4d450b8b01a6a99e622fd6557df6a4415ed41c156
SHA1 hash: 240f2486d8063579b4f03522655b819f5b942a21
MD5 hash: cfb273b2956c40dc77489e4ddb4fa244
humanhash: purple-burger-fix-hotel
File name:CHKDSK.EXE
Download: download sample
Signature BlankGrabber
Create hunting rule
File size:7'818'162 bytes
First seen:2023-09-03 16:26:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash ba5546933531fafa869b1f86a4e2a959 (10 x DCRat, 3 x RedLineStealer, 2 x RemcosRAT)
ssdeep 196608:CxYmOshoKMuIkhVastRL5Di3tOul19Ja9LJg:sYmOshouIkPftRL54tlbZ
Threatray 339 similar samples on MalwareBazaar
TLSH T1CD7633407315A8F9F686513DC89DCA5BDBB3388223A0D19B076887635F272AD0C7BB57
TrID 90.1% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
4.8% (.EXE) Win64 Executable (generic) (10523/12/4)
2.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
0.9% (.EXE) OS/2 Executable (generic) (2029/13)
0.9% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon ec705444445454ac (1 x BlankGrabber)
Reporter smica83
Tags:BlankGrabber exe HUN

Intelligence

File Origin
# of uploads :
1
# of downloads :
355
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CHKDSK.EXE
Verdict:
Suspicious activity
Analysis date:
2023-09-03 16:29:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/444c1d1b-77a8-4913-9303-f6750aa1fa07

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/445879/
Detection(s):
SecuriteInfo.com.Win64.Malware-gen.10273.31606.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
Launching the process to change network settings
Enabling the 'hidden' option for analyzed file
Creating a window
Reading critical registry keys
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/64f4b3d8c95366b9effe2f80/reports/4014a50d-a387-43f9-ba08-804ccec98c83/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6
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/878beb36-8438-4157-bd5a-98ccf0ee2fd6
Result
Threat name:
Blank Grabber
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1302447
Signature
Adds a directory exclusion to Windows Defender
DLL side loading technique detected
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
May check the online IP address of the machine
Modifies Windows Defender protection settings
Removes signatures from Windows Defender
Yara detected Blank Grabber
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1302447 Sample: CHKDSK.EXE.exe Startdate: 03/09/2023 Architecture: WINDOWS Score: 80 54 Found malware configuration 2->54 56 Yara detected Blank Grabber 2->56 8 CHKDSK.EXE.exe 24 2->8         started        process3 file4 42 C:\Users\user\AppData\...\VCRUNTIME140.dll, PE32+ 8->42 dropped 44 C:\Users\user\AppData\Local\...\rarreg.key, ASCII 8->44 dropped 46 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 8->46 dropped 48 17 other files (none is malicious) 8->48 dropped 66 May check the online IP address of the machine 8->66 68 Modifies Windows Defender protection settings 8->68 70 Adds a directory exclusion to Windows Defender 8->70 72 Removes signatures from Windows Defender 8->72 12 CHKDSK.EXE.exe 1 8->12         started        16 conhost.exe 8->16         started        signatures5 process6 dnsIp7 50 ip-api.com 208.95.112.1, 49726, 80 TUT-ASUS United States 12->50 52 blank-u3zyd.in 12->52 74 Found many strings related to Crypto-Wallets (likely being stolen) 12->74 76 Modifies Windows Defender protection settings 12->76 78 Adds a directory exclusion to Windows Defender 12->78 80 Removes signatures from Windows Defender 12->80 18 cmd.exe 1 12->18         started        21 cmd.exe 1 12->21         started        23 cmd.exe 1 12->23         started        25 2 other processes 12->25 signatures8 process9 signatures10 58 Modifies Windows Defender protection settings 18->58 60 Adds a directory exclusion to Windows Defender 18->60 62 Removes signatures from Windows Defender 18->62 27 powershell.exe 19 18->27         started        29 conhost.exe 18->29         started        31 powershell.exe 19 21->31         started        33 MpCmdRun.exe 2 21->33         started        35 conhost.exe 21->35         started        37 WMIC.exe 1 23->37         started        40 tasklist.exe 1 25->40         started        process11 signatures12 64 DLL side loading technique detected 37->64
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6/
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-09-03 12:52:01 UTC
File Type:
PE+ (Exe)
Extracted files:
245
AV detection:
9 of 38 (23.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mfiu26jkbx7wqq3phclrjh4lt7pryjll5dwf7hr6a2rwhlyexk3a._file
Verdict:
unknown
Similar samples:
2f0bb4d74005cf2460f4e5f0ef95390ef017fd154b00ada7492b266ca589ba3e
BlankGrabber
369fce162239045403c87f8c83445d9d300fe2d8656899cb079ce4acca77a99a
BlankGrabber
3f8e30e4408a436a10be48d37a1290afa9d91c2cdb7979197db295fc95f8104d
BlankGrabber
405c9f6e9b379914b66eedba3ba0fca6437ebbd4874c066c5cf6b32ea10c079d
BlankGrabber
41648630b8dbcbb7eaade9a0b4b07c92ce25785cefe6f77b502f8705a7861517
BlankGrabber
5cac65d30a2180221aa4b248ff2515c66cd9309f8cec6ef0ddce1e87757a2fbb
BlankGrabber
882d95bdbca75ab9d13486e477ab76b3978e14d6fca30c11ec368f7e5fa1d0cb
BlankGrabber
bb95df37be69e6b1b662a1a5936a77da4e87ec1a16bfc108919ed7eb836f0f80
BlankGrabber
c416d6ca4ee95a6647cc4357ba51a5e04a956b5a4ceaa74ad768fe544d706f48
BlankGrabber
d4f545691c8441b5bcb86535b1d0fd16dc06786eb4080087588cd4d0f388d5ca
BlankGrabber
+ 329 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
upx
Link:
https://tria.ge/reports/230903-tx31nabd83/
Behaviour
Enumerates processes with tasklist
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Loads dropped DLL
UPX packed file
Unpacked files
SH256 hash:
61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6
MD5 hash:
cfb273b2956c40dc77489e4ddb4fa244
SHA1 hash:
240f2486d8063579b4f03522655b819f5b942a21
Link:
https://www.unpac.me/results/b59e0254-4fb2-40dd-93ab-e7776ad20029/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/61514d792a0d/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/61514d792a0dff68436f3897149f8b9fdf1c256be8ec5f9e3e06a363af04bab6

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: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/445879/

Comments