MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d. 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: 18


Intelligence 18 IOCs 1 YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d
SHA3-384 hash: df860e461c8b0a50150fe7f700f4cc635a239d9862da6e2b614d95a8fa2d3396813685f0f5fb49fb32dd3b2f73d3c6c5
SHA1 hash: a8e7bc429b76f4a095a9ae0f7ffb548357018f94
MD5 hash: cb6e17018ac8e6aea677f49b08c0d355
humanhash: hydrogen-mango-tango-utah
File name:243cd136b5aa42c20c048a1fccb215749c482519488f4.exe
Download: download sample
Signature FatalRAT
Create hunting rule
File size:798'826 bytes
First seen:2025-11-07 01:25:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 347c78c8c65cb786eb1ac6893d046a5f (1 x FatalRAT)
ssdeep 6144:+Cs5XapMUkF8ixk3FaAY0RzX67xUaElqmHjSqXWFSzkPDNGEfWJBgAD:Q1apMUkuixqY2zqNUaElDHhXMykLlxi
TLSH T1E205AF063951C27BC9E761728E3A6B19A1FCDD900B26A5CF239C4A5E4B31DC27D36237
TrID 37.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
20.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
12.7% (.EXE) Win64 Executable (generic) (10522/11/4)
7.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter abuse_ch
Tags:exe FatalRAT


Avatar
abuse_ch
FatalRAT C2:
154.86.157.18:23001

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
154.86.157.18:23001 https://threatfox.abuse.ch/ioc/1634730/

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
_243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d.exe
Verdict:
No threats detected
Analysis date:
2025-11-07 01:37:49 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2f855a3d-97b5-4e21-99db-ac99fe5c8f4e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
FatalRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/36396/
Detection(s):
Win.Trojan.Killmbr-10022827-0
Create hunting rule

Win.Trojan.Killmbr-10022828-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=690d4a843afb53888cc92c82
Tags:
zegost emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Enabling the 'hidden' option for analyzed file
Creating a file in the Windows directory
Creating a service
Launching a service
Creating a process from a recently created file
Сreating synchronization primitives
Searching for synchronization primitives
Enabling the 'hidden' option for recently created files
Connection attempt
DNS request
Sending an HTTP GET request
Adding an access-denied ACE
Creating a file in the Windows subdirectories
Sending a custom TCP request
Searching for the window
Enabling autorun for a service
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context farfli fingerprint keylogger microsoft_visual_cc overlay unsafe
Link:
https://www.filescan.io/uploads/690d4a83131554c23ed3602e/reports/a21d92b2-2cc0-4abc-b7b2-1131019ec427/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-03T14:10:00Z UTC
Last seen:
2025-11-07T00:44:00Z UTC
Hits:
~10
Detections:
Trojan.Win32.Farfli.sb Trojan.Win32.Antavmu.sb HEUR:Trojan.Win32.Agent.gen Backdoor.Win32.Zegost.sb Trojan.Antavmu.TCP.C&C Trojan.Agent.TCP.C&C PDM:Trojan.Win32.Generic Trojan.Win32.Agent.sb HEUR:Backdoor.Win32.Generic Backdoor.Win32.Lotok.sbd Backdoor.Win32.Farfli.sb
Link:
https://opentip.kaspersky.com/243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d/results?tab=lookup
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d5304407-58a6-4671-9da6-98866786cd85
Result
Threat name:
FatalRAT, GhostRat, Nitol
Create hunting rule
Detection:
malicious
Classification:
bank.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1809710
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Checks if browser processes are running
Contains functionality to access PhysicalDrive, possible boot sector overwrite
Contains functionality to automate explorer (e.g. start an application)
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
Contains functionality to determine the online IP of the system
Contains functionality to infect the boot sector
Contains functionality to inject threads in other processes
Creates an undocumented autostart registry key
Drops executables to the windows directory (C:\Windows) and starts them
Drops HTML or HTM files to system directories
Found stalling execution ending in API Sleep call
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Tries to delay execution (extensive OutputDebugStringW loop)
Yara detected FatalRAT
Yara detected GhostRat
Yara detected Nitol
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1809710 Sample: 243cd136b5aa42c20c048a1fccb... Startdate: 07/11/2025 Architecture: WINDOWS Score: 100 24 www.taobao.com.danuoyi.tbcache.com 2->24 26 www.taobao.com 2->26 32 Suricata IDS alerts for network traffic 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 5 other signatures 2->38 7 Defghi.exe 1 2->7         started        10 243cd136b5aa42c20c048a1fccb215749c482519488f4.exe 2 2 2->10         started        signatures3 process4 file5 40 Antivirus detection for dropped file 7->40 42 Multi AV Scanner detection for dropped file 7->42 44 Contains functionality to determine the online IP of the system 7->44 52 7 other signatures 7->52 13 Defghi.exe 5 13 7->13         started        18 C:\Windows\Defghi.exe, PE32 10->18 dropped 20 C:\Windows\Defghi.exe:Zone.Identifier, ASCII 10->20 dropped 46 Contains functionality to detect virtual machines (IN, VMware) 10->46 48 Contains functionality to automate explorer (e.g. start an application) 10->48 50 Contains functionality to access PhysicalDrive, possible boot sector overwrite 10->50 signatures6 process7 dnsIp8 28 154.86.157.18, 23001, 49690 ENJOYVC-AS-APEnjoyvcCloudGroupLimitedHK Seychelles 13->28 30 www.taobao.com.danuoyi.tbcache.com 155.102.55.40, 443, 49691, 49692 UTAHUS United States 13->30 22 C:\Windows\SysWOW64\config\...\getip[1].htm, HTML 13->22 dropped 54 Creates an undocumented autostart registry key 13->54 56 Drops HTML or HTM files to system directories 13->56 file9 signatures10
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/cb6e17018ac8e6aea677f49b08c0d355
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d/
Verdict:
Malicious
Threat:
Family.FATALRAT
Link:
https://tip.neiki.dev/file/243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d
Threat name:
Win32.Backdoor.Zegost
Create hunting rule
Status:
Malicious
First seen:
2025-11-03 19:25:55 UTC
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eq6ncnvvvjbmedaerip4zmqvosoeqjizjchunmcrgd27pxbtla6q._file
Verdict:
malicious
Label(s):
fatalrat
Create hunting rule
Result
Malware family:
fatalrat
Create hunting rule
Score:
  10/10
Tags:
family:fatalrat discovery infostealer rat stealer trojan
Link:
https://tria.ge/reports/251107-bs5dtagr7v/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Executes dropped EXE
Fatal Rat payload
FatalRat
Fatalrat family
Verdict:
Malicious
Tags:
Win.Trojan.Killmbr-10022827-0
YARA:
n/a
Link:
https://app.threat.zone/submission/e0d3b5c9-b594-416c-bf90-e77ac00c3e60
Unpacked files
SH256 hash:
243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d
MD5 hash:
cb6e17018ac8e6aea677f49b08c0d355
SHA1 hash:
a8e7bc429b76f4a095a9ae0f7ffb548357018f94
Link:
https://www.unpac.me/results/720f05e6-bfad-4415-b0b7-7f9030242ad4/
SH256 hash:
69cbdb401d6c03f3d64b3bf48d527cb4bf507952f34b170a3d020707fc4ff7be
MD5 hash:
014960b00621ead2d2267bad617a74e9
SHA1 hash:
640534106af63ee5cff7718aee5c459ee5cd609f
Detections:
win_fatal_rat_w0
Create hunting rule
win_younglotus_g0
Create hunting rule
win_fatal_rat_auto
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_ClearMyTracksByProcess
Create hunting rule
MALWARE_Win_FatalRAT
Create hunting rule
Link:
https://www.unpac.me/results/720f05e6-bfad-4415-b0b7-7f9030242ad4/
Parent samples :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 family:
FatalRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/243cd136b5aa/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.44
Link:
https://yomi.yoroi.company/submissions/243cd136b5aa42c20c048a1fccb215749c482519488f46b05130f5f7dc33583d

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:Armadillov1xxv2xx
Create hunting rule
Author:malware-lu
Rule name:Check_DriveSize
Create hunting rule
Rule name:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:dgaaga
Create hunting rule
Author:Harshit
Description:Detects suspicious PowerShell or registry activity
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:GenericGh0st
Create hunting rule
Author:Still
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_ClearMyTracksByProcess
Create hunting rule
Author:ditekSHen
Description:Detects executables calling ClearMyTracksByProcess
Rule name:MALWARE_Win_FatalRAT
Create hunting rule
Author:ditekSHen
Description:Detects FatalRAT
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
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:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:win32_younglotus
Create hunting rule
Author:Reedus0
Description:Rule for detecting YoungLotus malware
Rule name:Windows_Generic_Threat_7693d7fd
Create hunting rule
Author:Elastic Security
Rule name:win_fatal_rat_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.fatal_rat.
Rule name:win_fatal_rat_w0
Create hunting rule
Author:AT&T Alien Labs
Description:Detects FatalRAT, unpacked malware.
Reference:https://cybersecurity.att.com/blogs/labs-research/new-sophisticated-rat-in-town-fatalrat-analysis

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/36396/

Comments