MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9
SHA3-384 hash: e6933782343e02b806ff473d1fe0244467bba3a024d999348e246a11a0a5835e4aba1acaec309bb4d85f0f8620084536
SHA1 hash: a39c59a25a05a77d0bcafa86cbdca79099f71186
MD5 hash: 0155dbe368f2bbb8e0950a8c653d684d
humanhash: ink-uncle-cold-victor
File name:file
Download: download sample
Signature CoinMiner
Create hunting rule
File size:4'299'783 bytes
First seen:2024-11-24 10:47:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash be41bf7b8cc010b614bd36bbca606973 (195 x LummaStealer, 126 x DanaBot, 63 x Vidar)
ssdeep 98304:ouZBpdmdNSTGKHw3wCeVxw69y2tnkSb/rUlnCK3zwvXd:ZmITGKHwACeVnyQTsCKkvt
TLSH T1CA16330ADF569AB3F6ED97F215B17B0E3CBA7911280AE24C172593CF16E92282340771
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
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) (4504/4/1)
Magika pebin
File icon (PE):PE icon
dhash icon fe38703529682000 (1 x CoinMiner)
Reporter Bitsight
Tags:CoinMiner exe


Avatar
Bitsight
url: http://31.41.244.11/files/6856384433/fMb18eF.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
441
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-11-24 10:48:12 UTC
Tags:
autoit miner autoit-loader
Link:
https://app.any.run/tasks/0a9f3b6c-44ce-4b92-ad02-9dc331fdc49e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67430467b31374f09833f219
Tags:
ransomware autorun virus shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Creating a file
Creating a process from a recently created file
Launching cmd.exe command interpreter
DNS request
Possible injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
installer microsoft_visual_cc overlay packed
Link:
https://www.filescan.io/uploads/6743046597ce90b1314484e4/reports/b4c3dfa8-ed62-4d98-a738-df6726db8229/overview
Verdict:
Malicious
Labled as:
Win/grayware_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/036b0ca2-203c-40cf-b7d9-2e34e8a7ca00
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1561828
Signature
AI detected suspicious sample
DNS related to crypt mining pools
Drops PE files with a suspicious file extension
Found direct / indirect Syscall (likely to bypass EDR)
Found strings related to Crypto-Mining
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Sigma detected: Drops script at startup location
Sigma detected: Search for Antivirus process
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes many files with high entropy
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1561828 Sample: file.exe Startdate: 24/11/2024 Architecture: WINDOWS Score: 100 73 xmr-eu2.nanopool.org 2->73 75 aXoOEZERyLjmcASXxTaZGLMxwNjgk.aXoOEZERyLjmcASXxTaZGLMxwNjgk 2->75 89 Malicious sample detected (through community Yara rule) 2->89 91 Yara detected Xmrig cryptocurrency miner 2->91 93 Sigma detected: Search for Antivirus process 2->93 97 4 other signatures 2->97 11 file.exe 60 2->11         started        15 wscript.exe 1 2->15         started        signatures3 95 DNS related to crypt mining pools 73->95 process4 file5 65 C:\Users\user\AppData\Local\Temp\Love, DOS 11->65 dropped 67 C:\Users\user\AppData\Local\Temp\Wow, data 11->67 dropped 69 C:\Users\user\AppData\Local\Temp\William, data 11->69 dropped 71 44 other files (43 malicious) 11->71 dropped 115 Writes many files with high entropy 11->115 17 cmd.exe 3 11->17         started        117 Windows Scripting host queries suspicious COM object (likely to drop second stage) 15->117 21 LionGuard.scr 15->21         started        signatures6 process7 file8 53 C:\Users\user\AppData\Local\Temp\...\Ryan.com, PE32+ 17->53 dropped 79 Drops PE files with a suspicious file extension 17->79 81 Writes many files with high entropy 17->81 23 Ryan.com 4 17->23         started        27 cmd.exe 2 17->27         started        29 conhost.exe 17->29         started        33 6 other processes 17->33 83 Modifies the context of a thread in another process (thread injection) 21->83 85 Injects a PE file into a foreign processes 21->85 87 Found direct / indirect Syscall (likely to bypass EDR) 21->87 31 LionGuard.scr 21->31         started        signatures9 process10 file11 57 C:\Users\user\AppData\Local\...\LionGuard.scr, PE32+ 23->57 dropped 59 C:\Users\user\AppData\Local\...\LionGuard.js, ASCII 23->59 dropped 61 C:\Users\user\AppData\Local\...\K, data 23->61 dropped 105 Drops PE files with a suspicious file extension 23->105 107 Modifies the context of a thread in another process (thread injection) 23->107 109 Writes many files with high entropy 23->109 113 2 other signatures 23->113 35 Ryan.com 23->35         started        38 cmd.exe 2 23->38         started        63 C:\Users\user\AppData\Local\Temp\662510\A, data 27->63 dropped 111 Injects code into the Windows Explorer (explorer.exe) 31->111 41 explorer.exe 1 31->41         started        signatures12 process13 file14 99 Injects code into the Windows Explorer (explorer.exe) 35->99 101 Modifies the context of a thread in another process (thread injection) 35->101 43 explorer.exe 1 35->43         started        55 C:\Users\user\AppData\...\LionGuard.url, MS 38->55 dropped 47 conhost.exe 38->47         started        103 Found strings related to Crypto-Mining 41->103 49 conhost.exe 41->49         started        signatures15 process16 dnsIp17 77 xmr-eu2.nanopool.org 51.195.43.17, 10343, 49739 OVHFR France 43->77 119 System process connects to network (likely due to code injection or exploit) 43->119 51 conhost.exe 43->51         started        signatures18 process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eg6dmj67wjm53hyj7fqcpfxiwmk7k2m7zv4n6vjfvcbdsyobsluq._file
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:xmrig discovery miner upx
Link:
https://tria.ge/reports/241124-mv4e3swlev/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Enumerates processes with tasklist
Suspicious use of SetThreadContext
UPX packed file
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
XMRig Miner payload
Suspicious use of NtCreateUserProcessOtherParentProcess
Xmrig family
xmrig
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9d02ecb7-575a-4ae3-9619-f7a00ffd473d
Unpacked files
SH256 hash:
21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9
MD5 hash:
0155dbe368f2bbb8e0950a8c653d684d
SHA1 hash:
a39c59a25a05a77d0bcafa86cbdca79099f71186
Link:
https://www.unpac.me/results/4820a0fe-1648-448d-b94c-3d0503d8fd2b/
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/21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

CoinMiner

Executable exe 21bc3627dfb259dd9f09f9602796e8b315f5699fcd78df5525a8823961c192e9

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3302026/

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
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::OpenProcess
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::GetWindowsDirectoryW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

Comments