MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2832dc4466e9ba6b25ddfc061250c2d6a28e8dc49b71e4f25af79810a9d6c75b. 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


Threat unknown


Vendor detections: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2832dc4466e9ba6b25ddfc061250c2d6a28e8dc49b71e4f25af79810a9d6c75b
SHA3-384 hash: 0b349aa46a73f7f784941fa2328cc32c0296dfcf755ee31bfe100a136e125ad2f9c2a5b6035bdd905597405750e4a9e5
SHA1 hash: 0d44a5514f7ff4643436cb57d59eaf8240a05e42
MD5 hash: d52c28ad8e8aac47fe7d8dd96c41eae4
humanhash: tennis-glucose-network-single
File name:RummikubSetup_ex64LTS.exe
Download: download sample
File size:59'650'376 bytes
First seen:2024-08-12 11:02:20 UTC
Last seen:2024-08-12 11:48:07 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (557 x GuLoader, 120 x RemcosRAT, 82 x EpsilonStealer)
ssdeep 786432:4c10nRYHJvP/3CFaBDslTeHvvPToG6LGJd1HjIUS0yTdH7KFcWZk6Qgoqs1jRy2u:4k0upvEaileH3PT9uGZ3NUbYzIILMP8
TLSH T1A5D733935B71312CCF61D173E629D28E6B7AB0366A7EA3DB44E028ABC50D8553C0E717
TrID 37.3% (.EXE) Win64 Executable (generic) (10523/12/4)
17.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
15.9% (.EXE) Win32 Executable (generic) (4504/4/1)
7.3% (.ICL) Windows Icons Library (generic) (2059/9)
7.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b2a0b496a6caca72 (2 x CoinMiner)
Reporter likeastar20
Tags:exe signed

Code Signing Certificate

Organisation:Tommy Tech LTD
Issuer:Sectigo Public Code Signing CA EV R36
Algorithm:sha256WithRSAEncryption
Valid from:2021-10-26T00:00:00Z
Valid to:2022-10-26T23:59:59Z
Serial number: db020695814bfd7bcd8697d7d8928e2c
Intelligence: 8 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:SHA256
Thumbprint: 48274437739d377444c7d26d142dbd27a5eb6dd5b3919753f357793467788f76
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
294
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RummikubSetup_ex64LTS.exe
Verdict:
Malicious activity
Analysis date:
2024-08-12 11:06:07 UTC
Tags:
crypto-regex
Link:
https://app.any.run/tasks/845c54db-6e5d-4622-93df-3d766a4de91c

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=66b9ebf9aa5b40be0aa01516
Tags:
Execution Generic Network Stealth Unwanted
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Сreating synchronization primitives
Creating a window
Searching for the window
Creating a file in the Windows subdirectories
Creating a file
Modifying a system file
Creating a process from a recently created file
Searching for synchronization primitives
Launching a process
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Changing a file
Sending a UDP request
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the system32 directory
Running batch commands
Creating a process with a hidden window
Sending an HTTP GET request
Forced shutdown of a system process
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
TommyTech.A potentially unwanted application
Link:
https://www.hybrid-analysis.com/sample/2832dc4466e9ba6b25ddfc061250c2d6a28e8dc49b71e4f25af79810a9d6c75b
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
50 / 100
Link:
https://www.joesandbox.com/analysis/1491518
Signature
Drops executables to the windows directory (C:\Windows) and starts them
Drops HTML or HTM files to system directories
Loading BitLocker PowerShell Module
Multi AV Scanner detection for domain / URL
Powershell creates an autostart link
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Schedule system process
Sigma detected: Schtasks Creation Or Modification With SYSTEM Privileges
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1491518 Sample: RummikubSetup_ex64LTS.exe Startdate: 12/08/2024 Architecture: WINDOWS Score: 50 83 ws.gamedistribution.com 2->83 85 wincloudservice.com 2->85 87 33 other IPs or domains 2->87 113 Multi AV Scanner detection for domain / URL 2->113 115 Yara detected Powershell download and execute 2->115 117 Sigma detected: Schedule system process 2->117 119 3 other signatures 2->119 10 Setup.exe 77 2->10         started        14 RummikubSetup_ex64LTS.exe 13 250 2->14         started        17 powershell.exe 2->17         started        19 2 other processes 2->19 signatures3 process4 dnsIp5 109 192.168.2.7 unknown unknown 10->109 129 Drops executables to the windows directory (C:\Windows) and starts them 10->129 21 Setup.exe 10->21         started        24 msedge.exe 10->24         started        26 Setup.exe 36 10->26         started        32 2 other processes 10->32 75 C:\Windows\ShellServiceLog\Setup.exe, PE32+ 14->75 dropped 77 C:\Windows\ShellServiceLog\...\applet, Mach-O 14->77 dropped 79 C:\Windows\ShellServiceLog\...\app.asar, data 14->79 dropped 81 23 other files (1 malicious) 14->81 dropped 131 Drops HTML or HTM files to system directories 14->131 111 wincloudservice.com 104.21.67.135, 49816, 49818, 49841 CLOUDFLARENETUS United States 17->111 28 conhost.exe 17->28         started        30 conhost.exe 19->30         started        file6 signatures7 process8 dnsIp9 89 securedatacorner.com 104.21.25.24, 443, 49811, 49842 CLOUDFLARENETUS United States 21->89 34 cmd.exe 21->34         started        36 cmd.exe 21->36         started        39 cmd.exe 21->39         started        50 5 other processes 21->50 91 192.168.2.11, 137, 138, 443 unknown unknown 24->91 93 192.168.2.12 unknown unknown 24->93 95 239.255.255.250 unknown Reserved 24->95 41 msedge.exe 24->41         started        44 msedge.exe 24->44         started        46 msedge.exe 24->46         started        48 msedge.exe 24->48         started        97 s0.2mdn.net 142.250.185.102, 443, 49802 GOOGLEUS United States 26->97 99 securepubads.g.doubleclick.net 142.250.185.226, 443, 49801 GOOGLEUS United States 26->99 101 16 other IPs or domains 26->101 process10 dnsIp11 52 powershell.exe 34->52         started        55 conhost.exe 34->55         started        121 Uses schtasks.exe or at.exe to add and modify task schedules 36->121 57 msedge.exe 36->57         started        59 conhost.exe 36->59         started        61 systeminfo.exe 39->61         started        63 conhost.exe 39->63         started        103 13.107.246.40, 443, 49777, 49778 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 41->103 105 52.159.108.190, 443, 49779, 49788 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 41->105 107 13 other IPs or domains 41->107 65 powershell.exe 50->65         started        67 conhost.exe 50->67         started        69 8 other processes 50->69 signatures12 process13 signatures14 123 Powershell creates an autostart link 52->123 125 Loading BitLocker PowerShell Module 52->125 71 msedge.exe 57->71         started        127 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 61->127 73 WmiPrvSE.exe 61->73         started        process15
Score:
3%
Verdict:
Benign
File Type:
PE
Link:
https://malprob.io/report/2832dc4466e9ba6b25ddfc061250c2d6a28e8dc49b71e4f25af79810a9d6c75b
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=faznyrdg5g5gwjo57qdbeugc22ri5doetny6j4s266mbbkowy5nq._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery evasion execution linux macos
Link:
https://tria.ge/reports/240812-m5qxqssdka/
Behaviour
Enumerates system info in registry
Gathers system information
Modifies data under HKEY_USERS
Modifies system certificate store
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Browser Information Discovery
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Checks installed software on the system
Drops file in Windows directory
Executes dropped EXE
Loads dropped DLL
Checks computer location settings
Drops file in System32 directory
Command and Scripting Interpreter: PowerShell
Blocklisted process makes network request
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4d114352-fb79-49c7-8880-68a4f8b6bb2a
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2832dc4466e9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:maldoc_indirect_function_call_3
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits

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 (HIGH_ENTROPY_VA)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::SetFileSecurityW
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.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::MoveFileExW
KERNEL32.dll::MoveFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
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