MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7c3f0c76ecb963b952fe219978f2e6ff371b6039a072188105c7446b5b647bb. 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: 9


Intelligence 9 IOCs YARA 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7c3f0c76ecb963b952fe219978f2e6ff371b6039a072188105c7446b5b647bb
SHA3-384 hash: 03d6e7a6259faeb97b8b28055ca12006b200a76374fd44be4c9fe89c5fe99b57e51a519e7e6a8878aba9e6d122a71937
SHA1 hash: 52c65290cc3ceb0aa3bfef93f8795a78c7694fa0
MD5 hash: 90d4ba33990011a5c8a203ac236b3b8c
humanhash: hawaii-blue-alaska-maine
File name:2025年4月第二批信息公示pdf.exe
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:71'765'856 bytes
First seen:2025-04-09 02:31:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash bb0c21c9565b3a6f4a885d9511f137be (1 x ValleyRAT)
ssdeep 786432:AOyIcAcvbSC/68zU+qPjvN6D6K/J/nRT8zQvkADbM2bUq/jbEYSlQN7aKZfMuBAK:bd69rqbvA/JmukADg2bUIqQN7fBSvN4L
TLSH T138F70147F2A501A8C07AC139CA97C517EBB178095B7497DF22A497D92F33BF02A3A711
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
dhash icon b2e1b496a6cada72 (13 x LummaStealer, 12 x AsyncRAT, 8 x Rhadamanthys)
Reporter GDHJDSYDH1
Tags:18-166-199-216 exe FakeApp kryptik SilverFox ValleyRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
643
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2025年4月第二批信息公示pdf.exe
Verdict:
No threats detected
Analysis date:
2025-04-09 02:34:28 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4d2a0602-c781-4241-9830-9636168f3d6b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f5dcefe011fe619fae536d
Tags:
emotet cobalt
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Launching a process
Creating a process with a hidden window
Searching for synchronization primitives
Connection attempt
Sending a custom TCP request
Сreating synchronization primitives
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Win64/GenKryptik.HHVX trojan
Link:
https://www.hybrid-analysis.com/sample/a7c3f0c76ecb963b952fe219978f2e6ff371b6039a072188105c7446b5b647bb
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1660187
Signature
Allocates memory in foreign processes
Changes memory attributes in foreign processes to executable or writable
Contains functionality to inject code into remote processes
Contains functionality to inject threads in other processes
Creates a thread in another existing process (thread injection)
Deletes itself after installation
Found direct / indirect Syscall (likely to bypass EDR)
Found evasive API chain checking for user administrative privileges
Hijacks the control flow in another process
Joe Sandbox ML detected suspicious sample
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1660187 Sample: 2025#U5e744#U6708#U7b2c#U4e... Startdate: 09/04/2025 Architecture: WINDOWS Score: 96 38 Multi AV Scanner detection for dropped file 2->38 40 Contains functionality to inject threads in other processes 2->40 42 Joe Sandbox ML detected suspicious sample 2->42 44 Found evasive API chain checking for user administrative privileges 2->44 8 2025#U5e744#U6708#U7b2c#U4e8c#U6279#U4fe1#U606f#U516c#U793apdf.exe 2->8         started        11 smigpu.exe 1 2->11         started        process3 signatures4 56 Writes to foreign memory regions 8->56 58 Allocates memory in foreign processes 8->58 60 Found direct / indirect Syscall (likely to bypass EDR) 8->60 13 spoolsv.exe 3 8->13 injected 62 Hijacks the control flow in another process 11->62 64 Changes memory attributes in foreign processes to executable or writable 11->64 66 Creates a thread in another existing process (thread injection) 11->66 17 svchost.exe 11->17 injected 19 conhost.exe 11->19         started        process5 file6 32 C:\Program Files\Common Files\...\smigpu.exe, PE32+ 13->32 dropped 34 C:\Program Files\Common Files\...\libsmi.dll, PE32+ 13->34 dropped 72 Hijacks the control flow in another process 13->72 74 Contains functionality to inject threads in other processes 13->74 76 Contains functionality to inject code into remote processes 13->76 80 4 other signatures 13->80 21 svchost.exe 1 13->21         started        78 Modifies the context of a thread in another process (thread injection) 17->78 25 svchost.exe 17->25         started        signatures7 process8 dnsIp9 36 18.166.199.216, 49712, 49715, 80 AMAZON-02US United States 21->36 46 Hijacks the control flow in another process 21->46 48 Contains functionality to inject threads in other processes 21->48 50 Writes to foreign memory regions 21->50 52 Found evasive API chain checking for user administrative privileges 21->52 27 dllhost.exe 21->27         started        54 Modifies the context of a thread in another process (thread injection) 25->54 30 dllhost.exe 25->30         started        signatures10 process11 signatures12 68 Contains functionality to inject threads in other processes 27->68 70 Found evasive API chain checking for user administrative privileges 27->70
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a7c3f0c76ecb963b952fe219978f2e6ff371b6039a072188105c7446b5b647bb
Gathering data
Threat name:
Win64.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-04-09 02:32:21 UTC
File Type:
PE+ (Exe)
Extracted files:
13
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u7b7br3ozoldxfjp4imzpdzon7zxdnqdtidsdcaqlr2ennnwi65q._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/250409-c1dfqsxlx7/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/98463819-30e1-4b68-bb90-504f358db27f
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a7c3f0c76ecb/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:Check_Debugger
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__RemoteAPI
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:Mimikatz_Generic
Create hunting rule
Author:Still
Description:attempts to match all variants of Mimikatz
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_Websites
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects the reference of suspicious sites that might be used to download further malware
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:test_Malaysia
Create hunting rule
Author:rectifyq
Description:Detects file containing malaysia string
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ValleyRAT

Executable exe a7c3f0c76ecb963b952fe219978f2e6ff371b6039a072188105c7446b5b647bb

(this sample)

  
Delivery method
Distributed via web download

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 (NX_COMPAT)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::BuildTrusteeWithSidW
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetEffectiveRightsFromAclW
ADVAPI32.dll::GetLengthSid
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
DNS_APIPerforms DNS callsDNSAPI.dll::DnsQuery_A
MULTIMEDIA_APICan Play MultimediaWINMM.dll::PlaySoundW
WINMM.dll::timeKillEvent
WINMM.dll::timeSetEvent
NET_SHARE_APICan access Network ShareNETAPI32.dll::NetShareEnum
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AccessCheck
ADVAPI32.dll::DuplicateToken
ADVAPI32.dll::GetTokenInformation
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
KERNEL32.dll::CreateThreadpoolWork
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDriveTypeW
KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleWindow
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupAccountSidW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryInfoKeyW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_SOCK_APIUses Network to send and receive dataWS2_32.dll::freeaddrinfo
WS2_32.dll::getaddrinfo
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::CreateMenu
USER32.dll::FindWindowA
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

Comments