MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d. 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


SilverFox


Vendor detections: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d
SHA3-384 hash: bfbe494adff20c11bcf74af903a644f7a7b3aa3b4eab8dbdc827929db8f4bc4773f1acf20b19d284b1e593dc0e57bc04
SHA1 hash: 6a6cb373ff59178a029fcd2da3d5d1b29673cf3a
MD5 hash: a8d9973fa386ac46b47fed5f05d198d5
humanhash: yellow-mike-october-wisconsin
File name:B88488B8E7066575EB4B3CCA53545388C53420F8C9519A8A1866352A07CB481D.exe
Download: download sample
Signature SilverFox
Create hunting rule
File size:5'707'174 bytes
First seen:2024-12-23 04:16:41 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 40ab50289f7ef5fae60801f88d4541fc (59 x ValleyRAT, 49 x Gh0stRAT, 41 x OffLoader)
ssdeep 98304:XwREfaptn/e8iM2INNcyrxLjEJAqr7wnVbOdMwZgf:lfapZLibGNVrhjSw+s
TLSH T1FC461212F2CBE43EE4190B3B16B3A15495FB6A606422AD538BECB4ECCF750501E3E657
TrID 39.3% (.EXE) Inno Setup installer (107240/4/30)
21.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
15.7% (.EXE) InstallShield setup (43053/19/16)
15.2% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9)
3.8% (.EXE) Win64 Executable (generic) (10522/11/4)
Magika pebin
File icon (PE):PE icon
dhash icon 5050d270cccc82ae (109 x Adware.Generic, 43 x LummaStealer, 42 x OffLoader)
Reporter zhuzhu0009
Tags:backdoor exe SilverFox winos

Intelligence

File Origin
# of uploads :
1
# of downloads :
444
Origin country :
JP JP
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
B88488B8E7066575EB4B3CCA53545388C53420F8C9519A8A1866352A07CB481D.exe
Verdict:
Suspicious activity
Analysis date:
2024-12-23 04:18:32 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/37210509-c872-4045-91a5-fbf1f671f300

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.DownLoad4.16298.18686.14967.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6768e4408a4d48ee35fe581b
Tags:
injection dropper shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Searching for synchronization primitives
Creating a process with a hidden window
Restart of the analyzed sample
Searching for the window
Creating a file in the Program Files subdirectories
Moving a file to the Program Files subdirectory
Creating a service
Launching a service
Running batch commands
Launching a process
Forced system process termination
Loading a system driver
Enabling the 'hidden' option for recently created files
Creating a file
Deleting a recently created file
Enabling autorun for a service
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
embarcadero_delphi fingerprint installer overlay packed packer_detected
Link:
https://www.filescan.io/uploads/6768e443103c07c163773762/reports/8dcc01be-de31-45e8-aec0-2ec5a3665b9c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d
Result
Verdict:
UNKNOWN
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/1337810d-cab4-46dc-8b4a-a3e33d3570ce
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1579607
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Contains functionality to hide a thread from the debugger
Found driver which could be used to inject code into processes
Hides threads from debuggers
Loading BitLocker PowerShell Module
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Protects its processes via BreakOnTermination flag
Query firmware table information (likely to detect VMs)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1579607 Sample: Zt43pLXYiu.exe Startdate: 23/12/2024 Architecture: WINDOWS Score: 96 97 Multi AV Scanner detection for dropped file 2->97 99 Multi AV Scanner detection for submitted file 2->99 101 Found driver which could be used to inject code into processes 2->101 103 3 other signatures 2->103 11 Zt43pLXYiu.exe 2 2->11         started        14 cmd.exe 2->14         started        16 cmd.exe 2->16         started        18 30 other processes 2->18 process3 file4 95 C:\Users\user\AppData\...\Zt43pLXYiu.tmp, PE32 11->95 dropped 20 Zt43pLXYiu.tmp 3 5 11->20         started        24 sc.exe 1 14->24         started        26 sc.exe 1 16->26         started        28 sc.exe 1 18->28         started        30 sc.exe 1 18->30         started        32 sc.exe 1 18->32         started        34 26 other processes 18->34 process5 file6 81 C:\Users\user\AppData\Local\...\update.vac, PE32 20->81 dropped 83 C:\Users\user\AppData\Local\...\_setup64.tmp, PE32+ 20->83 dropped 105 Adds a directory exclusion to Windows Defender 20->105 36 Zt43pLXYiu.exe 2 20->36         started        39 powershell.exe 23 20->39         started        42 conhost.exe 24->42         started        44 conhost.exe 26->44         started        46 conhost.exe 28->46         started        48 conhost.exe 30->48         started        50 conhost.exe 32->50         started        52 conhost.exe 34->52         started        54 25 other processes 34->54 signatures7 process8 file9 85 C:\Users\user\AppData\...\Zt43pLXYiu.tmp, PE32 36->85 dropped 56 Zt43pLXYiu.tmp 4 16 36->56         started        107 Loading BitLocker PowerShell Module 39->107 60 conhost.exe 39->60         started        62 WmiPrvSE.exe 39->62         started        signatures10 process11 file12 87 C:\Users\user\AppData\Local\...\update.vac, PE32 56->87 dropped 89 C:\Program Files (x86)\...\trash (copy), PE32+ 56->89 dropped 91 C:\Program Files (x86)\...\is-KIKIU.tmp, PE32+ 56->91 dropped 93 3 other files (1 malicious) 56->93 dropped 109 Query firmware table information (likely to detect VMs) 56->109 111 Protects its processes via BreakOnTermination flag 56->111 113 Hides threads from debuggers 56->113 115 Contains functionality to hide a thread from the debugger 56->115 64 7zr.exe 2 56->64         started        67 cmd.exe 56->67         started        69 7zr.exe 6 56->69         started        signatures13 process14 file15 79 C:\Program Files (x86)\...\tProtect.dll, PE32+ 64->79 dropped 71 conhost.exe 64->71         started        73 sc.exe 1 67->73         started        75 conhost.exe 69->75         started        process16 process17 77 conhost.exe 73->77         started       
Score:
83%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d/
Threat name:
Win32.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2024-12-23 04:17:05 UTC
File Type:
PE (Exe)
AV detection:
13 of 38 (34.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xccirohhazsxl22lhtffgvctrdctiihyzfizvcqymy2sub6ljaoq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/241223-ewc1hswjhz/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Launches sc.exe
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Creates new service(s)
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9e706e0e-30c9-4bf3-8b04-1e2d49bf2048
Unpacked files
SH256 hash:
350ba0ba996645e44f067770edab933b8f20739472b5e98fab8d6a8ef2db8e61
MD5 hash:
eff184b051888988eb21ff67013d7309
SHA1 hash:
95ed3701cadccab0b540196188393eee28f58bad
Link:
https://www.unpac.me/results/ecdcb0b6-1faf-4d06-9fcf-a8f781b6fe83/
SH256 hash:
b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d
MD5 hash:
a8d9973fa386ac46b47fed5f05d198d5
SHA1 hash:
6a6cb373ff59178a029fcd2da3d5d1b29673cf3a
Link:
https://www.unpac.me/results/ecdcb0b6-1faf-4d06-9fcf-a8f781b6fe83/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b88488b8e706/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/b88488b8e7066575eb4b3cca53545388c53420f8c9519a8a1866352a07cb481d

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:Borland
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

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
AUTH_APIManipulates User Authorizationadvapi32.dll::AllocateAndInitializeSid
advapi32.dll::ConvertSidToStringSidW
advapi32.dll::ConvertStringSecurityDescriptorToSecurityDescriptorW
advapi32.dll::EqualSid
advapi32.dll::FreeSid
SECURITY_BASE_APIUses Security Base APIadvapi32.dll::AdjustTokenPrivileges
advapi32.dll::GetTokenInformation
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CreateProcessW
advapi32.dll::OpenProcessToken
advapi32.dll::OpenThreadToken
kernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryA
kernel32.dll::LoadLibraryExW
kernel32.dll::LoadLibraryW
kernel32.dll::GetDriveTypeW
kernel32.dll::GetVolumeInformationW
kernel32.dll::GetSystemInfo
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateDirectoryW
kernel32.dll::CreateFileW
kernel32.dll::DeleteFileW
kernel32.dll::GetWindowsDirectoryW
kernel32.dll::GetSystemDirectoryW
kernel32.dll::GetFileAttributesW
WIN_BASE_USER_APIRetrieves Account Informationadvapi32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyExW
advapi32.dll::RegQueryValueExW
WIN_USER_APIPerforms GUI Actionsuser32.dll::PeekMessageW
user32.dll::CreateWindowExW

Comments