MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca. 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


Threat unknown


Vendor detections: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca
SHA3-384 hash: 4c277a4c41e6542f6b084745aad6e865b59cefdd01d6b0ae85d700c8404780e7d7d060fae02f9ae75c58a04a3bbeb073
SHA1 hash: ec6c1aa469dea25359080e6e2f22a7dfecb8a14e
MD5 hash: 3e7ca33a0746e65cc08a92035af226c0
humanhash: mississippi-pennsylvania-nineteen-sodium
File name:yuanbao_2.72.0.613_x64.exe
Download: download sample
File size:52'717'752 bytes
First seen:2026-06-27 15:45:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 46ce5c12b293febbeb513b196aa7f843 (37 x GuLoader, 21 x RemcosRAT, 9 x AgentTesla)
ssdeep 786432:Q6NFL+D5zPvzzQmKHJUG9f3BbQVdOn2upGgJ/UvwDtISbhK4QI:Q6NhOzPvvKzfR8Vdn1cUvwDtxY5I
TLSH T1CEC73380F46EFDA2EBECD574E1BF229D376A85764870C180B8D9ED6466C30C91A33791
TrID 27.0% (.EXE) Win64 Executable (generic) (6522/11/2)
20.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.6% (.EXE) Win32 Executable (generic) (4504/4/1)
8.5% (.ICL) Windows Icons Library (generic) (2059/9)
8.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon cc0e274545330ecc
Reporter Ling
Tags:exe SilverFox ValleyRAT


Avatar
CNGaoLing
The sample is retrieved from "hxxps://yuanbao-cn[.]com" -> "hxxps://yuanbao[.]it[.]com/ybitsoft/yuanbao_2[.]72[.]0[.]613_x64[.]zip"

SilverFox
IOC (IP 43.99.101.175:8080)

Intelligence

File Origin
# of uploads :
1
# of downloads :
126
Origin country :
US US
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/632dbc73-8695-4db8-8a9b-c334f5fc2acb/
Malware family:
n/a
ID:
1
File name:
yuanbao_2.72.0.613_x64.exe
Verdict:
Malicious activity
Analysis date:
2026-06-27 15:26:59 UTC
Tags:
auto-reg eneio64-sys vuln-driver
Link:
https://app.any.run/tasks/e8d5903e-fbe3-479c-96ef-8c5034aab57c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a3feba286bc95245bf9faa4
Tags:
ransomware zegost shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Searching for the window
Deleting a recently created file
Creating a file in the %AppData% subdirectories
Creating a file in the Windows subdirectories
Сreating synchronization primitives
Connection attempt
DNS request
Creating a service
Launching a service
Loading a system driver
Sending a custom TCP request
Creating a window
Searching for synchronization primitives
Running batch commands
Creating a process with a hidden window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun for a service
Forced shutdown of a system process
Blocking the Windows Defender launch
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug base64 crypto expired-cert explorer explorer fingerprint fingerprint installer installer installer-heuristic invalid-signature lolbin lolbin microsoft_visual_cc nsis packed reconnaissance signed
Link:
https://www.filescan.io/uploads/6a3ff036bfc59d8d571f9c23/reports/d949b6aa-8c81-488d-932c-c6dbdd56760c/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-25T23:54:00Z UTC
Last seen:
2026-06-27T12:49:00Z UTC
Hits:
~10
Detections:
UDS:DangerousObject.Multi.Generic Trojan.Win32.Agent.sb BSS:Trojan.Win32.Generic HEUR:Trojan-PSW.Win32.Coins.gen
Link:
https://opentip.kaspersky.com/b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca/results?tab=lookup
Score:
56%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca
Gathering data
Verdict:
Malicious
Threat:
Trojan-PSW.Win32.Coins
Link:
https://tip.neiki.dev/file/b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca
Threat name:
Win32.Malware.ShellcodeRunner
Create hunting rule
Status:
Malicious
First seen:
2026-06-27 15:26:33 UTC
File Type:
PE (Exe)
Extracted files:
4486
AV detection:
3 of 36 (8.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcywmm6zzqpnuevksqk5f6roshzz77ulpkkohcas4xcjvsep5hfa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
adware bootkit defense_evasion discovery persistence privilege_escalation ransomware spyware stealer trojan
Link:
https://tria.ge/reports/260627-s7k26ab18p/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies data under HKEY_USERS
Modifies registry class
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Browser Information Discovery
Embeds OpenSSL
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Launches sc.exe
Checks system information in the registry
Drops file in System32 directory
Adds Run key to start application
Checks installed software on the system
Checks whether UAC is enabled
Enumerates connected drives
Network Share Discovery
Writes to the Master Boot Record (MBR)
Checks computer location settings
Event Triggered Execution: Component Object Model Hijacking
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Boot or Logon Autostart Execution: Active Setup
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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/

File information

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

Web download

Executable exe b8b16633d9cc1eda12aa9415d2fa2e91f39ffe8b7a94e38812e5c49ac88fe9ca

(this sample)

  
Delivery method
Distributed via web download

Comments