fatalrat | a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411

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 6 IoCs

resource	yara_rule
behavioral1/memory/2732-3-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat
behavioral1/memory/2732-5-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat
behavioral1/memory/2732-2-0x0000000000450000-0x0000000000492000-memory.dmp	family_gh0strat
behavioral1/memory/2732-11-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat
behavioral1/memory/2732-12-0x0000000010000000-0x00000000103DD000-memory.dmp	family_gh0strat
behavioral1/memory/2732-14-0x0000000010000000-0x00000000103DD000-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 6 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/2732-3-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat
behavioral1/memory/2732-5-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat
behavioral1/memory/2732-2-0x0000000000450000-0x0000000000492000-memory.dmp	fatalrat
behavioral1/memory/2732-11-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat
behavioral1/memory/2732-12-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat
behavioral1/memory/2732-14-0x0000000010000000-0x00000000103DD000-memory.dmp	fatalrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
2	2732	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	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 4 IoCs

pid	Process
2732	rundll32.exe
2732	rundll32.exe
2732	rundll32.exe
2732	rundll32.exe

Drops file in Windows directory 2 IoCs

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

Kills process with taskkill 1 IoCs

evasion

pid	Process
3068	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2732	rundll32.exe
2732	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	rundll32.exe
Token: SeDebugPrivilege	3068	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2732	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2736 wrote to memory of 2732	2736	rundll32.exe	19
PID 2732 wrote to memory of 3068	2732	rundll32.exe	30
PID 2732 wrote to memory of 3068	2732	rundll32.exe	30
PID 2732 wrote to memory of 3068	2732	rundll32.exe	30
PID 2732 wrote to memory of 3068	2732	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a077489b265c104221dfb96cc6ae35abc267eba883fc6100cc878e223fb5f411.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2736
- 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:2732
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /im rundll32.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3068

C:\Windows\Svwxya.exe
C:\Windows\Svwxya.exe
1⤵
- Executes dropped EXE
PID:2548

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Windows\Svwxya.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/2732-0-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2732-1-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2732-3-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2732-5-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2732-2-0x0000000000450000-0x0000000000492000-memory.dmp

Filesize
264KB

Download
memory/2732-11-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2732-12-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download
memory/2732-14-0x0000000010000000-0x00000000103DD000-memory.dmp

Filesize
3.9MB

Download

Analysis

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