fatalrat | 62733648b49d1047d165241cd413a7c15ad3231890b7d5034b85bd42b7daf7cb

Analysis

max time kernel
145s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2024 07:03

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General

Target

62733648b49d1047d165241cd413a7c15ad3231890b7d5034b85bd42b7daf7cb.dll
Size

1.3MB
MD5

22bead2bf159f53d2b21e46659b1b80c
SHA1

69b150703d948c56d179b18b5d0c0ebe37ec40f4
SHA256

62733648b49d1047d165241cd413a7c15ad3231890b7d5034b85bd42b7daf7cb
SHA512

e8c065138f2527bfd3d6055dc70449d041026957a71baf5a0a4f4111f570bc637d5040012118ae658d85616ac5a0e52206d3795187ac91316814503c9f3c8b79
SSDEEP

24576:ft8lUXMfdZFwH4ucgkrJiu+72qLs9qOet1Wz6f99tHP7F6X8VZH:fqXSY3uu+72Es9VeDW+R+o

Score

10^/10

fatalrat gh0strat infostealer rat

Malware Config

Signatures

FatalRat
FatalRat is a modular infostealer family written in C++ first appearing in June 2021.
infostealer rat fatalrat

Gh0st RAT payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1540-1-0x0000000002EE0000-0x0000000002F22000-memory.dmp	family_gh0strat
behavioral2/memory/1540-9-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat

Fatal Rat payload 2 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral2/memory/1540-1-0x0000000002EE0000-0x0000000002F22000-memory.dmp	fatalrat
behavioral2/memory/1540-9-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat

Blocklisted process makes network request 1 IoCs

Processes:

rundll32.exe

flow	pid	Process
8	1540	rundll32.exe

Executes dropped EXE 1 IoCs

Processes:

Svwxya.exe

pid	Process
4320	Svwxya.exe

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\rundll32.exe	rundll32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

rundll32.exe

pid	Process
1540	rundll32.exe
1540	rundll32.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exe

description	ioc	Process
File created	C:\Windows\Svwxya.exe	rundll32.exe
File opened for modification	C:\Windows\Svwxya.exe	rundll32.exe

Kills process with taskkill 1 IoCs

evasion

Processes:

taskkill.exe

pid	Process
2316	taskkill.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

rundll32.exe

pid	Process
1540	rundll32.exe
1540	rundll32.exe
1540	rundll32.exe
1540	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rundll32.exetaskkill.exe

description	pid	Process
Token: SeDebugPrivilege	1540	rundll32.exe
Token: SeDebugPrivilege	2316	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

rundll32.exe

pid	Process
1540	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	Process	procid_target
PID 3420 wrote to memory of 1540	3420	rundll32.exe	16
PID 3420 wrote to memory of 1540	3420	rundll32.exe	16
PID 3420 wrote to memory of 1540	3420	rundll32.exe	16
PID 1540 wrote to memory of 2316	1540	rundll32.exe	25
PID 1540 wrote to memory of 2316	1540	rundll32.exe	25
PID 1540 wrote to memory of 2316	1540	rundll32.exe	25

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\62733648b49d1047d165241cd413a7c15ad3231890b7d5034b85bd42b7daf7cb.dll,#1
1⤵
- Blocklisted process makes network request
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im rundll32.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2316

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\62733648b49d1047d165241cd413a7c15ad3231890b7d5034b85bd42b7daf7cb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3420

C:\Windows\Svwxya.exe
C:\Windows\Svwxya.exe
1⤵
- Executes dropped EXE
PID:4320

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Windows\Svwxya.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
memory/1540-0-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/1540-1-0x0000000002EE0000-0x0000000002F22000-memory.dmp

Filesize
264KB

Download
memory/1540-9-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download