MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e
SHA3-384 hash: b71ae4615fd70dc56410a7743c6541215f20ad47e5b4ba0e3489d62f534a137e690c7380d77e35ae6349e13dbb76cbfb
SHA1 hash: 7cdf6fb44f20226cb040bb338768a7aa68033442
MD5 hash: 89554c7f8ecc5f7cb6e0e258ddcb75bd
humanhash: mexico-lemon-seventeen-georgia
File name:Microsoft.WindowsAppRuntime.Bootstrap.dll
Download: download sample
Signature ValleyRAT
Create hunting rule
File size:389'120 bytes
First seen:2026-04-17 01:05:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 027c69a5c3a6d1d0fb7ff06b7149d2e7 (1 x ValleyRAT)
ssdeep 6144:3FC7LlDKYQYFe5Ua0krrTD+M2d5PaPeYC2:VC7BDVQMv5Pd
TLSH T1BD846B46F79009B9E177D23CC9630B45EAB27C595720D74F13E843AA1F237A1AA3B724
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
Reporter Ling
Tags:exe SilverFox Trojan/SilverFox.ct ValleyRAT


Avatar
CNGaoLing
Trojan/SilverFox.ct
IOC (IP 38.190.198.153)

Intelligence

File Origin
# of uploads :
1
# of downloads :
151
Origin country :
US US
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
Microsoft.WindowsAppRuntime.Bootstrap.dll
Verdict:
No threats detected
Analysis date:
2026-04-17 01:06:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a86a3b55-f4db-4c04-8dcc-94f51cf7f8fb

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/61913/
Detection(s):
SecuriteInfo.com.Variant.Tedy.942375.72162989.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69e1877b45787c53e53a7a55
Tags:
dropper virus
Result
Verdict:
Clean
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm exploit fingerprint lolbin masquerade microsoft_visual_cc runonce wmic
Link:
https://www.filescan.io/uploads/69e1876fd920e19044ff7122/reports/cdfe223b-36b7-43ac-b2a2-6c273ea87467/overview
Verdict:
Malicious
Labled as:
Tedy.Generic
Link:
https://www.hybrid-analysis.com/sample/15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e
Verdict:
Malicious
File Type:
dll x64
First seen:
2026-04-14T14:04:00Z UTC
Last seen:
2026-04-14T14:26:00Z UTC
Hits:
~10
Detections:
Trojan.Win64.Agent.sba Exploit.Win32.BypassUAC.sb Exploit.Win32.BypassUAC.hghh
Link:
https://opentip.kaspersky.com/15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/949b750e-fe49-4ed3-9bc4-a855bea4c908
Score:
16%
Verdict:
Benign
File Type:
PE
Link:
https://malprob.io/report/15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/89554c7f8ecc5f7cb6e0e258ddcb75bd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e/
Verdict:
Malicious
Threat:
Exploit.Win32.BypassUAC
Link:
https://tip.neiki.dev/file/15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e
Threat name:
Win64.Trojan.Ulise
Create hunting rule
Status:
Malicious
First seen:
2026-04-14 21:00:41 UTC
File Type:
PE+ (Dll)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cw4ntt5ps4cq547mh44faul5copy6siiefudb24tbvsklhsgjkpa._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/260417-bfzmssgt2z/
Unpacked files
SH256 hash:
15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e
MD5 hash:
89554c7f8ecc5f7cb6e0e258ddcb75bd
SHA1 hash:
7cdf6fb44f20226cb040bb338768a7aa68033442
Link:
https://www.unpac.me/results/ae5f8f3d-c6c3-4923-a023-6f6361576264/
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/15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e

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:DebuggerException__SetConsoleCtrl
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:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

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

Web download

ValleyRAT

Executable exe 15b8d9cfaf97050ef3ec3f3850517d139f8f4908216830eb930d64a59e464a9e

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/61913/

Comments