MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15f7917b2268699bf8f0bfe5d62a3f3ab46527e69d504ee901ecb72a0971ac89. 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 10 File information Comments

SHA256 hash:	15f7917b2268699bf8f0bfe5d62a3f3ab46527e69d504ee901ecb72a0971ac89
SHA3-384 hash:	a36a208148fea0e485ee3325ed0ca532fa6db4b3f530a3b53b910ede211d91a6eb93f55afbdfcd7086d66a484e276b1c
SHA1 hash:	1f64e5d307bc2f5eaad3ab9946bde359b45eeb0b
MD5 hash:	6cdacabbac8800c81b7dea07b3f1b137
humanhash:	pizza-papa-lion-crazy
File name:	xrk_6.24_setup.exe
Download:	download sample
Signature	ValleyRAT Create hunting rule
File size:	21'574'699 bytes
First seen:	2025-06-25 01:02:58 UTC
Last seen:	2025-06-25 03:55:09 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	bbadd88e560afea1d0dd8f728c4701ca (2 x ValleyRAT, 1 x Gh0stRAT, 1 x PythonStealer)
ssdeep	393216:XKAre2/p3QM8WRRAdy+H+rIlky0G9hGQDhu5OoqmxzXj1mUff2H3scLsy:6b2/Z8kRcH+rIlkBG7DDw5xqUzzkwq3s
Threatray	780 similar samples on MalwareBazaar
TLSH	T1C62733FA7007D1EFE7427F7A9EF90D35E5B78829E3564BB71A861200CF692007055EA2
TrID	64.7% (.EXE) UPX compressed Win64 Executable (70117/5/12) 25.0% (.EXE) UPX compressed Win32 Executable (27066/9/6) 4.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 1.8% (.EXE) OS/2 Executable (generic) (2029/13) 1.8% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
dhash icon	c6c2ccc4f4e0e0f8 (37 x PythonStealer, 21 x CrealStealer, 19 x Empyrean)
Reporter	GDHJDSYDH1
Tags:	exe pyinstaller Python SilverFox UPX ValleyRAT

GDHJDSYDH1

C2: 61.129.3.203:443
Domain: zsyy.shhk.gov.cn

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
47.239.119.126:7777	https://threatfox.abuse.ch/ioc/1549018/

Intelligence

File Origin

# of uploads :

# of downloads :

542

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

xrk_6.24_setup.exe

Verdict:

Malicious activity

Analysis date:

2025-06-25 00:57:30 UTC

Tags:

python upx pyinstaller advancedinstaller

Link:

https://app.any.run/tasks/f54c0ced-631c-493f-9d77-057549affa20

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/10978/

Detection(s):

SecuriteInfo.com.DecompressionBomb.18494.26619.UNOFFICIAL

Verdict:

Malicious

Score:

94.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=685b4af132ed47a3a8d6e890

Tags:

extens spawn virus

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %temp% subdirectories

Restart of the analyzed sample

Creating a file

Launching a process

Creating a window

Сreating synchronization primitives

Modifying a system file

Creating a file in the Windows subdirectories

Creating a file in the %AppData% subdirectories

DNS request

Connection attempt

Sending a custom TCP request

Sending an HTTP GET request

Unauthorized injection to a system process

Verdict:

Malicious

Labled as:

Malware_46.7

Link:

https://www.hybrid-analysis.com/sample/15f7917b2268699bf8f0bfe5d62a3f3ab46527e69d504ee901ecb72a0971ac89

Score:

98%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/15f7917b2268699bf8f0bfe5d62a3f3ab46527e69d504ee901ecb72a0971ac89

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PE (Portable Executable) Win 64 Exe x64

Link:

https://app.malva.re/file/6cdacabbac8800c81b7dea07b3f1b137

Gathering data

Threat name:

Win64.Malware.Heuristic

Status:

Malicious

First seen:

2025-06-25 00:57:30 UTC

File Type:

PE+ (Exe)

Extracted files:

549

AV detection:

17 of 24 (70.83%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=cx3zc6zcnbuzx6hqx7s5mkr7hk2gkj7gtvie52ib5s3suclrvseq._file

Result

Malware family:

n/a

Score:

7/10

Tags:

discovery upx

Link:

https://tria.ge/reports/250625-bemlvadm7w/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Drops file in Windows directory

UPX packed file

Blocklisted process makes network request

Enumerates connected drives

Loads dropped DLL

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/bbb83028-5a6c-4050-9161-6df7f4c8a911

Malware family:

ValleyRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/15f7917b2268/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/15f7917b2268699bf8f0bfe5d62a3f3ab46527e69d504ee901ecb72a0971ac89

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__SetConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	Detect_PyInstaller Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects PyInstaller compiled executables across platforms

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	PyInstaller Create hunting rule
Author:	@bartblaze
Description:	Identifies executable converted using PyInstaller. This rule by itself does NOT necessarily mean the detected file is malicious.

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:	upx_largefile Create hunting rule
Author:	k3nr9

File information

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

Web download

ValleyRAT

exe 15f7917b2268699bf8f0bfe5d62a3f3ab46527e69d504ee901ecb72a0971ac89

(this sample)

any.run

https://app.any.run/tasks/f54c0ced-631c-493f-9d77-057549affa20

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/10978/

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	ADVAPI32.dll::OpenProcessToken
WIN_BASE_API	Uses Win Base API	KERNEL32.DLL::LoadLibraryA

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