MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8462485220bfcba052d89e06bb3eaf38343b92bc246e391050f6019e70dba6a6. 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


CoinMiner


Vendor detections: 11


Intelligence 11 IOCs YARA 16 File information Comments
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SHA256 hash: 8462485220bfcba052d89e06bb3eaf38343b92bc246e391050f6019e70dba6a6
SHA3-384 hash: 65a26400256ea6f4e1d88e67aefcf6feada0fac102141e77fb92e3fc32e4f05f1dc59b5cedcc2d28ce6db4d9478609cb
SHA1 hash: 8f0d72b5457a29d0198187cda217bb50bfebccb7
MD5 hash: 7abdd998bba53910b91abe24a135ce8a
humanhash: arizona-ack-fanta-montana
File name:WinrarInstaller.exe
Download: download sample
Signature CoinMiner
Create hunting rule
File size:13'257'052 bytes
First seen:2023-10-07 19:08:17 UTC
Last seen:2023-10-07 19:37:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 75e9596d74d063246ba6f3ac7c5369a0 (8 x DCRat, 5 x PythonStealer, 4 x CoinMiner)
ssdeep 393216:TCB0tY01MpTdSXpiEKYI/KEmKbXvD11KMxILDT:TCKupoXp9KN/fmASkILDT
Threatray 101 similar samples on MalwareBazaar
TLSH T13CD63302FAC04470F1216B79A578D5A3CEFDB9532A7A475FC3E846BC9620AE15231E73
TrID 91.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.6% (.EXE) Win64 Executable (generic) (10523/12/4)
1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4505/5/1)
0.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b2a0b496a6caca72 (2 x CoinMiner)
Reporter smica83
Tags:CoinMiner exe HUN XMRIG

Intelligence

File Origin
# of uploads :
2
# of downloads :
395
Origin country :
HU HU
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Python.Muldrop.16.9298.13975.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Running batch commands
Launching a process
Deleting a recently created file
Creating a file in the Program Files subdirectories
Setting browser functions hooks
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Enabling autorun by creating a file
Unauthorized injection to a browser process
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm control evasive expand explorer fingerprint greyware lolbin lolbin mpcmdrun overlay packed packed regedit replace setupapi shdocvw shell32
Link:
https://www.filescan.io/uploads/6521accf64965c51f777d9d8/reports/8e44750a-884e-487e-aed8-8ed34aa549ed/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8462485220bfcba052d89e06bb3eaf38343b92bc246e391050f6019e70dba6a6
Result
Verdict:
MALICIOUS
Malware family:
StrelaStealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f5b9b8ef-49d1-4abf-987b-084772d0e7dd
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1321557
Signature
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for dropped file
Changes security center settings (notifications, updates, antivirus, firewall)
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Found hidden mapped module (file has been removed from disk)
Hooks files or directories query functions (used to hide files and directories)
Hooks processes query functions (used to hide processes)
Hooks registry keys query functions (used to hide registry keys)
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)
Maps a DLL or memory area into another process
Modifies power options to not sleep / hibernate
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Query firmware table information (likely to detect VMs)
Sample is not signed and drops a device driver
Sigma detected: Stop multiple services
Snort IDS alert for network traffic
Uses powercfg.exe to modify the power settings
Writes to foreign memory regions
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1321557 Sample: WinrarInstaller.exe Startdate: 07/10/2023 Architecture: WINDOWS Score: 100 63 Snort IDS alert for network traffic 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Antivirus detection for dropped file 2->67 69 12 other signatures 2->69 8 WinrarInstaller.exe 10 2->8         started        11 updater.exe 5 2->11         started        14 cmd.exe 1 2->14         started        16 8 other processes 2->16 process3 file4 53 C:\Users\user\...\chongilonpinchilin.exe, PE32+ 8->53 dropped 55 C:\Users\user\AppData\Local\Temp\WinRAR.exe, PE32+ 8->55 dropped 57 C:\Users\user\AppData\Local\Temp\Built.exe, PE32 8->57 dropped 18 chongilonpinchilin.exe 3 8->18         started        59 C:\Windows\Temp\wemymlaqqabj.tmp, PE32+ 11->59 dropped 61 C:\Windows\Temp\keaqxbcztbvl.sys, PE32+ 11->61 dropped 87 Protects its processes via BreakOnTermination flag 11->87 89 Writes to foreign memory regions 11->89 91 Modifies the context of a thread in another process (thread injection) 11->91 101 3 other signatures 11->101 93 Uses powercfg.exe to modify the power settings 14->93 95 Modifies power options to not sleep / hibernate 14->95 22 conhost.exe 14->22         started        24 sc.exe 1 14->24         started        26 sc.exe 1 14->26         started        34 3 other processes 14->34 97 Query firmware table information (likely to detect VMs) 16->97 99 Changes security center settings (notifications, updates, antivirus, firewall) 16->99 28 conhost.exe 16->28         started        30 conhost.exe 16->30         started        32 powercfg.exe 1 16->32         started        36 5 other processes 16->36 signatures5 process6 file7 49 C:\Users\user\AppData\...\wemymlaqqabj.tmp, PE32+ 18->49 dropped 51 C:\Program Filesbehaviorgraphoogle\Chrome\updater.exe, PE32+ 18->51 dropped 71 Multi AV Scanner detection for dropped file 18->71 73 Writes to foreign memory regions 18->73 75 Modifies the context of a thread in another process (thread injection) 18->75 77 3 other signatures 18->77 38 dialer.exe 1 18->38         started        signatures8 process9 signatures10 79 Contains functionality to inject code into remote processes 38->79 81 Writes to foreign memory regions 38->81 83 Allocates memory in foreign processes 38->83 85 3 other signatures 38->85 41 winlogon.exe 38->41 injected 43 lsass.exe 38->43 injected 45 svchost.exe 38->45 injected 47 14 other processes 38->47 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8462485220bfcba052d89e06bb3eaf38343b92bc246e391050f6019e70dba6a6/
Threat name:
Win32.Trojan.Nekark
Create hunting rule
Status:
Malicious
First seen:
2023-10-07 14:16:57 UTC
File Type:
PE (Exe)
Extracted files:
217
AV detection:
23 of 36 (63.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qrrequrax7f2auwytydlwpvpha2dxev4erxdsecq6yaz44g3u2ta._file
Verdict:
malicious
Similar samples:
1f479a220e41be1c22092d76400565d0f7d8e890d1069a2f8bbdc5f697d9808f
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3761032e760a2bcc61854a0c7cf22e8e991af0ed60fac92b981853eadda00d1a
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5690f5208387bba02ca4f4954d9d479c57ca556d553795d813603a2b1f83121b
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6fa605c719933e2bdd8cde82c00b62753086b62027206f2d787daae772a21736
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824d90efe2a2835e2cc858198a50daa3b76e830cc2f62ce4aa2f30389fd46078
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b51709630a436f1dd145827a713f629c9b50d8b249e804381811a1fbff93994a
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ce7a9a4a88a1a9f154bb4e0650864933d87fd75bef94ec000faf24f75d0a308f
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e15b16fc5ba3994d5576aeb0581adb3bec21dae0ce15904aa93bf26d66e9669d
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ed58046044e126ab8b740bd4d37aa52dd8eebbfd539b607bda4425e6cd3e8c66
CoinMiner
feb1cc6e909be612e822cc7b40b1c2b262836020c719e25ea5a0152b4de87829
CoinMiner
+ 91 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion persistence vmprotect
Link:
https://tria.ge/reports/231007-xtsbjahb37/
Behaviour
Creates scheduled task(s)
Modifies data under HKEY_USERS
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Modifies system executable filetype association
VMProtect packed file
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Stops running service(s)
Suspicious use of NtCreateUserProcessOtherParentProcess
Unpacked files
SH256 hash:
8462485220bfcba052d89e06bb3eaf38343b92bc246e391050f6019e70dba6a6
MD5 hash:
7abdd998bba53910b91abe24a135ce8a
SHA1 hash:
8f0d72b5457a29d0198187cda217bb50bfebccb7
Link:
https://www.unpac.me/results/5880bcb1-1666-40cd-9700-7826e994bd57/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8462485220bf/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/8462485220bfcba052d89e06bb3eaf38343b92bc246e391050f6019e70dba6a6

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE).
Rule name:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
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:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_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:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:ThreadControl__Context
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.

Comments