fatalrat | a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06-01-2024 10:09

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General

Target

a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411.dll
Size

1.3MB
MD5

7ca7294f899f09df43135243afabc81f
SHA1

552fe1a6014a07963edea0187b3422771ca04c26
SHA256

a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411
SHA512

c41a24abb8a6b4e39b1a99cfbc7db0d29d171f00e1be9e130a0c630147d99c4e7385f3fc05946e18aed3524acd8c0f1daecb87c5620e3e5bfc37bde587af6d9f
SSDEEP

24576:qt8lUXMfdZFwH4ucgkrJiu+72qLs9qOet1Wz6f99tHP7F6X8VZH:qqXSY3uu+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 4 IoCs

resource	yara_rule
behavioral1/memory/2804-3-0x0000000000370000-0x00000000003B2000-memory.dmp	family_gh0strat
behavioral1/memory/2804-12-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat
behavioral1/memory/2804-5-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat
behavioral1/memory/2804-2-0x0000000010000000-0x00000000103DD000-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 4 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/2804-3-0x0000000000370000-0x00000000003B2000-memory.dmp	fatalrat
behavioral1/memory/2804-12-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat
behavioral1/memory/2804-5-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat
behavioral1/memory/2804-2-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
2	2804	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
2716	Svwxya.exe

Drops file in System32 directory 1 IoCs

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2804	rundll32.exe

Drops file in Windows directory 2 IoCs

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

pid	Process
2784	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2804	rundll32.exe
2804	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2804	rundll32.exe
Token: SeDebugPrivilege	2784	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2804	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 1980 wrote to memory of 2804	1980	rundll32.exe	16
PID 2804 wrote to memory of 2784	2804	rundll32.exe	20
PID 2804 wrote to memory of 2784	2804	rundll32.exe	20
PID 2804 wrote to memory of 2784	2804	rundll32.exe	20
PID 2804 wrote to memory of 2784	2804	rundll32.exe	20

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411.dll,#1
  2⤵
  - 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:2804
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /im rundll32.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2784

C:\Windows\Svwxya.exe
C:\Windows\Svwxya.exe
1⤵
- Executes dropped EXE
PID:2716

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2804-1-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2804-0-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2804-3-0x0000000000370000-0x00000000003B2000-memory.dmp

Filesize
264KB

Download
memory/2804-12-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2804-5-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2804-2-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download