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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d5ca8a2127e4803d0a742501ee10f6aac6569b81721333ea557e874dfa1a3f47. 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


PrivateLoader


Vendor detections: 11


Intelligence 11 IOCs YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d5ca8a2127e4803d0a742501ee10f6aac6569b81721333ea557e874dfa1a3f47
SHA3-384 hash: 1f87b8ba8c1baeeb64fb5316f1fbdb60bec3f6bef7303e149273fd9e45c6cbeffb2f170d448f0a07c6f6801f540fe340
SHA1 hash: 0fb228453d96a8af98a0f174dc048faa7777c425
MD5 hash: a4da33e8df6a878dd228f4dad5753a3c
humanhash: skylark-wisconsin-delta-lima
File name:SecuriteInfo.com.FileRepPup.23953.22896
Download: download sample
Signature PrivateLoader
Create hunting rule
File size:20'021'424 bytes
First seen:2024-05-01 17:30:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f0b9e4a2df4134a5ec3a7c92dd68b9a (1 x PrivateLoader)
ssdeep 393216:CCWXOGoDJcodCEEpntkRFqLdhyPMdp7fxxCb+MsN:tiOGoDuodCEUtkRULdhyPMdpxGHu
Threatray 4 similar samples on MalwareBazaar
TLSH T158173312BB02597CE49AC4314195EBB167777CFA0734E9BF919432213E7ABF10E36A48
TrID 48.7% (.EXE) Win64 Executable (generic) (10523/12/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
File icon (PE):PE icon
dhash icon 0c8773616131060f (3 x RUSTDESK, 2 x ACRStealer, 2 x CobaltStrike)
Reporter SecuriteInfoCom
Tags:exe PrivateLoader signed

Code Signing Certificate

Organisation:Zhou Huabing
Issuer:Sectigo Public Code Signing CA R36
Algorithm:sha384WithRSAEncryption
Valid from:2022-11-18T00:00:00Z
Valid to:2023-11-18T23:59:59Z
Serial number: afd331210ef460b7183ea2a9c57818cc
Intelligence: 7 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:SHA256
Thumbprint: d746ccefb8ed4db952b72272e55c849462e652b795b3b1a57cd9fd465bd86c3c
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
315
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d5ca8a2127e4803d0a742501ee10f6aac6569b81721333ea557e874dfa1a3f47.exe
Verdict:
Malicious activity
Analysis date:
2024-05-01 17:32:09 UTC
Tags:
remote rustdesk
Link:
https://app.any.run/tasks/0271d640-58f9-4c6b-a656-c2b026f38e4e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepPup.23953.22896.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Using the Windows Management Instrumentation requests
Searching for the window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Launching a process
Creating a file in the %temp% subdirectories
Сreating synchronization primitives
Creating a process with a hidden window
Creating a window
Running batch commands
DNS request
Connection attempt
Moving a file to the %AppData% subdirectory
Sending a custom TCP request
Sending a UDP request
Launching a service
Creating a file in the Windows subdirectories
Searching for synchronization primitives
Launching a tool to kill processes
Verdict:
Malicious
Threat level:
  10/10
Confidence:
89%
Tags:
anti-debug anti-vm lolbin overlay packed remoteadmin shell32 virus
Link:
https://www.filescan.io/uploads/66327c649cdc03b57ab918f5/reports/9000b5f5-a497-43ff-9fe6-dbfd15aa39a7/overview
Verdict:
Malicious
Labled as:
RemoteAdmin.RustDesk
Link:
https://www.hybrid-analysis.com/sample/d5ca8a2127e4803d0a742501ee10f6aac6569b81721333ea557e874dfa1a3f47
Result
Threat name:
n/a
Detection:
suspicious
Classification:
evad
Score:
39 / 100
Link:
https://www.joesandbox.com/analysis/1434818
Signature
Multi AV Scanner detection for submitted file
Query firmware table information (likely to detect VMs)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1434818 Sample: SecuriteInfo.com.FileRepPup... Startdate: 01/05/2024 Architecture: WINDOWS Score: 39 46 rs-sg.rustdesk.com 2->46 48 rs-ny.rustdesk.com 2->48 54 Multi AV Scanner detection for submitted file 2->54 9 SecuriteInfo.com.FileRepPup.23953.22896.exe 98 2->9         started        signatures3 process4 file5 38 C:\Users\user\AppData\Local\...\rustdesk.exe, PE32+ 9->38 dropped 40 C:\Users\user\...\window_size_plugin.dll, PE32+ 9->40 dropped 42 C:\Users\user\...\window_manager_plugin.dll, PE32+ 9->42 dropped 44 13 other files (none is malicious) 9->44 dropped 12 rustdesk.exe 63 9->12         started        16 taskkill.exe 1 9->16         started        process6 dnsIp7 50 rs-ny.rustdesk.com 108.61.171.103, 21115, 21116, 49711 AS-CHOOPAUS United States 12->50 52 rs-sg.rustdesk.com 127.0.0.1 unknown unknown 12->52 56 Query firmware table information (likely to detect VMs) 12->56 18 cmd.exe 1 12->18         started        20 rustdesk.exe 2 12->20         started        22 icacls.exe 1 12->22         started        26 2 other processes 12->26 24 conhost.exe 16->24         started        signatures8 process9 process10 28 taskkill.exe 1 18->28         started        30 conhost.exe 18->30         started        32 rustdesk.exe 5 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 26->36         started       
Score:
74%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/d5ca8a2127e4803d0a742501ee10f6aac6569b81721333ea557e874dfa1a3f47
Gathering data
Threat name:
Win64.PUA.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-07-14 15:19:24 UTC
File Type:
PE+ (Exe)
Extracted files:
10
AV detection:
2 of 38 (5.26%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2xfiuijh4sad2ctueua64ehwvldfng4boijth2svp2du36q2h5dq._file
Verdict:
unknown
Similar samples:
23b661d7bc171cd500d5096456905283ffe06479582b62d3bd5066633935d43e
PrivateLoader
7d8790e65a906706a93734b91efa6dfdb732f9897e04707233fe48033bd5654e
PrivateLoader
Result
Malware family:
privateloader
Create hunting rule
Score:
  10/10
Tags:
family:privateloader discovery loader
Link:
https://tria.ge/reports/240501-v3p7escc3v/
Behaviour
Kills process with taskkill
Modifies data under HKEY_USERS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Enumerates connected drives
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
PrivateLoader
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d5ca8a2127e4/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/d5ca8a2127e4803d0a742501ee10f6aac6569b81721333ea557e874dfa1a3f47

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:adonunix2
Create hunting rule
Author:Tim Brown @timb_machine
Description:AD on UNIX
Rule name:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:EXE_RustDesk_RemoteAdmin_April_2024
Create hunting rule
Author:NDA0N
Description:Detects RustDesk Remote Admin Tool
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:QbotStuff
Create hunting rule
Author:anonymous
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:SEH__vectored
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.

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineW
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
ntdll.dll::NtCreateFile
KERNEL32.dll::GetWindowsDirectoryW
KERNEL32.dll::GetSystemDirectoryW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptGenRandom

Comments