MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 aa50da2a49089316258540ca5606b7daa77cc9b93a406bff136166882261182e. 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
FatalRAT
Vendor detections: 14
| SHA256 hash: | aa50da2a49089316258540ca5606b7daa77cc9b93a406bff136166882261182e |
|---|---|
| SHA3-384 hash: | 8f35e986177c375451c44e2ec88fa18520284c8443b772d6291845ae6b0d3bfa713c9f3a5c6d2cf7cb4be5db4662406e |
| SHA1 hash: | dbaa68fba529a844d9c2712044079e497784fc9a |
| MD5 hash: | ad844e829a39dceb9c932692bccb5338 |
| humanhash: | solar-blossom-finch-utah |
| File name: | 向日葵安装包_16.02.21.exe |
| Download: | download sample |
| Signature | FatalRAT |
| File size: | 73'951'745 bytes |
| First seen: | 2025-06-25 02:15:20 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 4d363d3b473a6c355539abd95921390d (4 x ValleyRAT, 3 x FatalRAT, 1 x YoungLotus) |
| ssdeep | 1572864:1ri/XtaVjQnSE9Uy7APk98L2Qmr0+plce2DxxAvrWNXF20T0B6yf0TBmufI:1G/9aVMSipjr0CWZxq+XFt06TBmgI |
| Threatray | 169 similar samples on MalwareBazaar |
| TLSH | T190F73331B24AC427DA6205F11A2C9FDB5528BB250BB554CBB3CC2D2E5BB54C3173AE27 |
| TrID | 40.3% (.EXE) Win64 Executable (generic) (10522/11/4) 19.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 17.2% (.EXE) Win32 Executable (generic) (4504/4/1) 7.7% (.EXE) OS/2 Executable (generic) (2029/13) 7.6% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| dhash icon | c9d4c4cda6a8cec6 (5 x Gh0stRAT, 2 x Formbook, 2 x FatalRAT) |
| Reporter |  GDHJDSYDH1 |
| Tags: | dropper exe FatalRAT Gh0stRAT SilverFox ValleyRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
371
Origin country :
USVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_16.02.21.exe
Verdict:
Suspicious activity
Analysis date:
2025-06-25 02:06:45 UTC
Tags:
advancedinstaller
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Tags:
vmprotect phishing
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Searching for synchronization primitives
Creating a file in the %temp% directory
Launching a process
Modifying a system file
Creating a file in the Windows subdirectories
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Creating a service
Enabling autorun for a service
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 base64 fingerprint lolbin microsoft_visual_cc msiexec overlay overlay packed packer_detected runonce
Verdict:
Malicious
Labled as:
Trojan.Xkcp
Score:
62%
Verdict:
Susipicious
File Type:
PE
Gathering data
Threat name:
Win32.Malware.Heuristic
Status:
Malicious
First seen:
2025-06-25 02:06:47 UTC
File Type:
PE (Exe)
Extracted files:
3577
AV detection:
11 of 24 (45.83%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
fatalrat
Similar samples:
+ 159 additional samples on MalwareBazaar
Result
Malware family:
fatalrat
Score:
10/10
Tags:
family:fatalrat defense_evasion discovery infostealer persistence privilege_escalation rat stealer trojan upx vmprotect
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
UPX packed file
Enumerates connected drives
Executes dropped EXE
Loads dropped DLL
VMProtect packed file
Modifies Windows Firewall
Fatal Rat payload
FatalRat
Fatalrat family
Malware Config
C2 Extraction:
a16.nbdsnb2.top
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Malware family:
FatalRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | APT_Sandworm_ArguePatch_Apr_2022_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect ArguePatch loader used by Sandworm group for load CaddyWiper |
| Reference: | https://www.welivesecurity.com/2022/04/12/industroyer2-industroyer-reloaded/ |
| Rule name: | botnet_plaintext_c2 |
|---|---|
| Author: | cip |
| Description: | Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols. |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | pe_detect_tls_callbacks |
|---|
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessW KERNEL32.dll::CloseHandle KERNEL32.dll::CreateThread |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryExA KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetDriveTypeW |
| WIN_BASE_EXEC_API | Can Execute other programs | KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetConsoleTextAttribute KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleOutputCP KERNEL32.dll::GetConsoleScreenBufferInfo KERNEL32.dll::GetConsoleMode |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileW KERNEL32.dll::CopyFileExW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileW |
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