MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ecb073043eac944d4dda0106218dd031fb63eaad13a0568dd6317b09d039fede. 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: 12


Intelligence 12 IOCs 1 YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ecb073043eac944d4dda0106218dd031fb63eaad13a0568dd6317b09d039fede
SHA3-384 hash: b2ef6413acb3330266610a1396cad6acf6085338dcc676f4b284a3567057447f8a3ac677672eb6a6837d6bf0ddba8680
SHA1 hash: 567dad70f7652d7f0ed7e7f30a4b22a9b6a447c8
MD5 hash: b564629a65634957ec5dd429493008db
humanhash: hydrogen-texas-quiet-helium
File name:b564629a65634957ec5dd429493008db.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:20'020'190 bytes
First seen:2025-01-04 09:35:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (136 x GuLoader, 55 x Formbook, 40 x VIPKeylogger)
ssdeep 393216:8ikCEa7eXO0g24dyVnq2PJ1E7hSHMiusfjEo0Uqr+9JDiQB9u:8cjKeJddyVXJOufQo0Uqk+z
TLSH T112173329307BB836ED06FE73F3E413922D0AD82695574C2997247BE96103DCE49EE724
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter abuse_ch
Tags:exe SilverFox ValleyRAT winos


Avatar
abuse_ch
ValleyRAT C2:
211.159.148.197:80

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
211.159.148.197:80 https://threatfox.abuse.ch/ioc/1378039/

Intelligence

File Origin
# of uploads :
1
# of downloads :
484
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b564629a65634957ec5dd429493008db.exe
Verdict:
Malicious activity
Analysis date:
2025-01-04 09:54:05 UTC
Tags:
silverfox backdoor
Link:
https://app.any.run/tasks/264fc5bd-470c-4ba3-93c2-d0f46e9f7908

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Program.Unwanted.5590.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
98.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=677901fc74a2bd296e266652
Tags:
vmdetect emotet
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the Program Files subdirectories
Creating a process from a recently created file
Searching for the window
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer microsoft_visual_cc overlay packed packer_detected
Link:
https://www.filescan.io/uploads/677901036443af9e2d6711a1/reports/c0772d87-1dce-4cdc-adb5-2163a5346bd7/overview
Verdict:
Malicious
Labled as:
TR/AVI.Agent
Link:
https://www.hybrid-analysis.com/sample/ecb073043eac944d4dda0106218dd031fb63eaad13a0568dd6317b09d039fede
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1584125
Signature
Contain functionality to detect virtual machines
Loading BitLocker PowerShell Module
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines)
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ecb073043eac944d4dda0106218dd031fb63eaad13a0568dd6317b09d039fede
Gathering data
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2024-12-31 00:57:38 UTC
File Type:
PE (Exe)
Extracted files:
839
AV detection:
10 of 23 (43.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5syhgbb6vske2to2aedcddoqgh5wh2vncoqfndowgf5qtubz73pa._file
Verdict:
malicious
Label(s):
winos
Create hunting rule
Similar samples:
error
ValleyRAT
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery evasion execution persistence privilege_escalation
Link:
https://tria.ge/reports/250104-lkw3kswkcm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Command and Scripting Interpreter: PowerShell
Executes dropped EXE
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/683f3a90-78b0-448e-909b-5507898cff6d
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/ecb073043eac944d4dda0106218dd031fb63eaad13a0568dd6317b09d039fede

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_peb_parsing
Create hunting rule
Author:Willi Ballenthin
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:ValleyRAT
Create hunting rule
Author:NDA0E
Description:Detects ValleyRAT
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:Windows_Generic_Threat_4b0b73ce
Create hunting rule
Author:Elastic Security
Rule name:win_valley_rat_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.valley_rat.

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
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
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::MoveFileW
KERNEL32.dll::MoveFileExW
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