MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5279828832d4f9935efe87010457add225ffc6a3e3bd39d67713cdbcdcaabae1. 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: 12

Intelligence 12 IOCs YARA 19 File information Comments

SHA256 hash:	5279828832d4f9935efe87010457add225ffc6a3e3bd39d67713cdbcdcaabae1
SHA3-384 hash:	843e1ac0542ffcae00f83ed282b6f39a076993cd143302313fb217575325741e19df8808e483d24fa52a7a2fcc4ad7ba
SHA1 hash:	c2835c0e1838c557fbb53e811279becd263e96cd
MD5 hash:	0919740a39046235648f14c9a3853f7e
humanhash:	pasta-artist-autumn-east
File name:	程序安装-Installer2.exe
Download:	download sample
Signature	FatalRAT Create hunting rule
File size:	26'583'248 bytes
First seen:	2025-06-27 05:17:10 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	5e39a34c35158974b7b14f24a8f088ce (2 x FatalRAT)
ssdeep	786432:TElCbJ8c28FTscgT6wQz5mnuQ42SQ6cldikfkk:sCt/22scg8K16cldikfkk
TLSH	T1634733A2D878DCA5CE2297B71C7D097C8055738506186B377A384B819DF33A724B29EF
TrID	41.1% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 26.1% (.EXE) Win64 Executable (generic) (10522/11/4) 12.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.1% (.ICL) Windows Icons Library (generic) (2059/9) 5.0% (.EXE) OS/2 Executable (generic) (2029/13)
Magika	pebin
dhash icon	0000000000000000 (898 x AgentTesla, 540 x Formbook, 316 x RedLineStealer)
Reporter	GDHJDSYDH1
Tags:	backdoor exe FatalRAT infostealer SilverFox ValleyRAT

GDHJDSYDH1

C2:
47.79.64.224:80
111.231.74.159:8080
45.204.192.200:8081
More Reference: https://tria.ge/250627-fvctss1r12/behavioral2

Intelligence

File Origin

# of uploads :

# of downloads :

622

Origin country :

Vendor Threat Intelligence

Malware family:

fatalrat

ID:

File name:

-Installer2.exe

Verdict:

Malicious activity

Analysis date:

2025-06-27 05:11:15 UTC

Tags:

loader auto-startup arch-exec fatalrat rat

Link:

https://app.any.run/tasks/0b9363d0-7a70-43f6-af5c-951dd984717a

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/11295/

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=685e27f5e7ab83bcc170d90d

Tags:

autorun cobalt

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending an HTTP GET request

Creating a file

Delayed reading of the file

Creating a file in the %AppData% subdirectories

Moving a recently created file

Moving a file to the %AppData% subdirectory

Replacing files

Creating a process from a recently created file

Verdict:

Malicious

Labled as:

Win64/GenKryptik_AGeneric.AIJ trojan

Link:

https://www.hybrid-analysis.com/sample/5279828832d4f9935efe87010457add225ffc6a3e3bd39d67713cdbcdcaabae1

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/5279828832d4f9935efe87010457add225ffc6a3e3bd39d67713cdbcdcaabae1

Verdict:

inconclusive

YARA:

5 match(es)

Tags:

Executable PE (Portable Executable) Win 64 Exe x64

Link:

https://app.malva.re/file/0919740a39046235648f14c9a3853f7e

Gathering data

Threat name:

Win64.Trojan.FatalRAT

Status:

Malicious

First seen:

2025-06-27 05:11:17 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=kj4yfcbs2t4zgxx6q4aqiv5n2is77rvd4o6ttvtxcpg3zxfkxlqq._file

Result

Malware family:

fatalrat

Score:

10/10

Tags:

family:fatalrat discovery infostealer rat stealer trojan

Link:

https://tria.ge/reports/250627-fyxndavxgw/

Behaviour

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Drops file in System32 directory

Executes dropped EXE

Loads dropped DLL

Downloads MZ/PE file

Fatal Rat payload

FatalRat

Fatalrat family

Verdict:

Malicious

Tags:

ta_abused_service

YARA:

n/a

Link:

https://app.threat.zone/submission/9c4cfa88-49c6-4cad-9de4-f19a8e8999cd

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/5279828832d4f9935efe87010457add225ffc6a3e3bd39d67713cdbcdcaabae1

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:	BLOWFISH_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for Blowfish constants

Rule name:	botnet_plaintext_c2 Create hunting rule
Author:	cip
Description:	Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.

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

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Detect_PowerShell_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

Rule name:	ffdroider Create hunting rule
Author:	Michelle Khalil
Description:	This rule detects unpacked ffdroider stealer malware samples.

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:	pe_detect_tls_callbacks Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

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:	WHIRLPOOL_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for WhirlPool constants

File information

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

Web download

FatalRAT

exe 5279828832d4f9935efe87010457add225ffc6a3e3bd39d67713cdbcdcaabae1

(this sample)

any.run

https://app.any.run/tasks/0b9363d0-7a70-43f6-af5c-951dd984717a

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/11295/

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_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high
CHECK_TRUST_INFO	Requires Elevated Execution (level:requireAdministrator)	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::OpenProcess KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetSystemInfo KERNEL32.dll::GetStartupInfoA KERNEL32.dll::GetDiskFreeSpaceExA
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::GetWindowsDirectoryW
WIN_USER_API	Performs GUI Actions	USER32.dll::AppendMenuA USER32.dll::CreateMenu USER32.dll::CreateWindowExA

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