MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c. 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


ValleyRAT


Vendor detections: 11


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c
SHA3-384 hash: 7a8152c3eb6c5fedb15b10bab11957df7086c1918e7afdbede24953f95bb90e7184789067220d3cfa017148e51d174e1
SHA1 hash: 00dec8637d70bd850f93eb84a321f378bf840429
MD5 hash: 41e1d55f027ccbe1d6f1791b7dfa7230
humanhash: hawaii-eleven-four-xray
File name:安装助手2.0.1.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:6'118'958 bytes
First seen:2024-12-24 11:58:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 40ab50289f7ef5fae60801f88d4541fc (65 x ValleyRAT, 49 x Gh0stRAT, 42 x OffLoader)
ssdeep 98304:XwREsJXyDGAMfZaqwODvM6zEzZK4IOI1FRhhdEnkqeyMBCqNrkeEBPBbUPm/dMwZ:lQXyDmBPvMCisV17BIeyMPkFHHZ
TLSH T1B3561213F2CBE03EE05E1B3705B2A55494FB6A21A522AD5796ECB4ECCF350601E3E647
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 (112 x Adware.Generic, 71 x OffLoader, 43 x LummaStealer)
Reporter kafan_shengui
Tags:exe SilverFox ValleyRAT winos

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
安装助手2.0.1.exe
Verdict:
Suspicious activity
Analysis date:
2024-12-24 12:03:52 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/22775b30-2211-4362-9e49-a284e710efbb

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:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=676aa2088a4d48ee35fefbeb
Tags:
dropper virus shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Launching the process to change the firewall settings
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
Enabling autorun for a service
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Labled as:
Malware_48.0
Link:
https://www.hybrid-analysis.com/sample/83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c
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/819b723d-8191-4d51-948c-1dabc7a49432
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1580390
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
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: 1580390 Sample: #U5b89#U88c5#U52a9#U624b2.0.1.exe Startdate: 24/12/2024 Architecture: WINDOWS Score: 88 90 Multi AV Scanner detection for dropped file 2->90 92 Found driver which could be used to inject code into processes 2->92 94 PE file contains section with special chars 2->94 96 2 other signatures 2->96 10 #U5b89#U88c5#U52a9#U624b2.0.1.exe 2 2->10         started        13 cmd.exe 2->13         started        15 cmd.exe 2->15         started        17 31 other processes 2->17 process3 file4 86 C:\...\#U5b89#U88c5#U52a9#U624b2.0.1.tmp, PE32 10->86 dropped 19 #U5b89#U88c5#U52a9#U624b2.0.1.tmp 3 5 10->19         started        23 sc.exe 1 13->23         started        25 sc.exe 1 15->25         started        27 sc.exe 1 17->27         started        29 sc.exe 1 17->29         started        31 sc.exe 1 17->31         started        33 27 other processes 17->33 process5 file6 72 C:\Users\user\AppData\Local\...\update.vac, PE32 19->72 dropped 74 C:\Users\user\AppData\Local\...\_setup64.tmp, PE32+ 19->74 dropped 98 Adds a directory exclusion to Windows Defender 19->98 35 #U5b89#U88c5#U52a9#U624b2.0.1.exe 2 19->35         started        38 powershell.exe 23 19->38         started        41 conhost.exe 23->41         started        43 conhost.exe 25->43         started        45 conhost.exe 27->45         started        47 conhost.exe 29->47         started        49 conhost.exe 31->49         started        51 conhost.exe 33->51         started        53 26 other processes 33->53 signatures7 process8 file9 76 C:\...\#U5b89#U88c5#U52a9#U624b2.0.1.tmp, PE32 35->76 dropped 55 #U5b89#U88c5#U52a9#U624b2.0.1.tmp 4 16 35->55         started        100 Loading BitLocker PowerShell Module 38->100 59 conhost.exe 38->59         started        61 WmiPrvSE.exe 38->61         started        signatures10 process11 file12 78 C:\Users\user\AppData\Local\...\update.vac, PE32 55->78 dropped 80 C:\Program Files (x86)\Windows NT\hrsw.vbc, PE32 55->80 dropped 82 C:\Users\user\AppData\Local\...\_setup64.tmp, PE32+ 55->82 dropped 84 C:\Program Files (x86)\Windows NT\7zr.exe, PE32 55->84 dropped 102 Query firmware table information (likely to detect VMs) 55->102 104 Protects its processes via BreakOnTermination flag 55->104 106 Hides threads from debuggers 55->106 108 Contains functionality to hide a thread from the debugger 55->108 63 7zr.exe 2 55->63         started        66 7zr.exe 7 55->66         started        signatures13 process14 file15 88 C:\Program Files (x86)\...\tProtect.dll, PE32+ 63->88 dropped 68 conhost.exe 63->68         started        70 conhost.exe 66->70         started        process16
Score:
83%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c/
Threat name:
Win32.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2024-12-24 11:59:05 UTC
File Type:
PE (Exe)
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qo6bbnht7b63mfuilezv2e42dwcvi366sqkbpo2ipcqsff6mb4oa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence
Link:
https://tria.ge/reports/241224-n5qgmswqfx/
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/9810c30d-d3be-4ff9-9212-73245157648f
Unpacked files
SH256 hash:
defdc48fcdf990f78dc5457f5f45b5239f8f917545136538170c01d9eb5e2e41
MD5 hash:
53503958b2f77c4a5c580ecdad393da6
SHA1 hash:
79bd87091ddeeab48309efdde009620940616235
Link:
https://www.unpac.me/results/d97292e1-1d83-4a8f-8bd7-4b58e601b88e/
SH256 hash:
83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c
MD5 hash:
41e1d55f027ccbe1d6f1791b7dfa7230
SHA1 hash:
00dec8637d70bd850f93eb84a321f378bf840429
Link:
https://www.unpac.me/results/d97292e1-1d83-4a8f-8bd7-4b58e601b88e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83bc10b4f3f8/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/83bc10b4f3f87db6168859335d139a1d85546fde941417bb4878a12297cc0f1c

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

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