fatalrat | 5c8ebbfd58f88816efd7c92843468d800f6607d2a80c913042ec33edf878c597

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 17:37

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General

Target

win32-quickq.exe
Size

102.7MB
MD5

6cc7d1e2dd43c1ce2c40add01bba5f10
SHA1

2e7a05e6ac9b0c030fe1b3e0326d550588c926a4
SHA256

5c8ebbfd58f88816efd7c92843468d800f6607d2a80c913042ec33edf878c597
SHA512

9237bedfe998036210a5a52227b715ab1d24edc7de477bde4f5f72fab10dc6003551b6c82ced77b2a9c636e3409f906ab94dd67b818c91b7eb737b1332eee707
SSDEEP

3145728:nHJBbXVSMpO5rZ2AH+FuiHtGkrvCwyxNAGWp/:H/2tDeF5gk29vWp

Score

10^/10

fatalrat discovery evasion infostealer persistence rat trojan

Malware Config

Signatures

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

Fatal Rat payload 1 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral2/memory/3196-79-0x0000000010000000-0x0000000010029000-memory.dmp	fatalrat

Executes dropped EXE 6 IoCs

Processes:

sg.tmpuyd.exeQTalk.exespolsvt.exespolsvt.exesvcoth.exe

pid	Process
1072	sg.tmp
4912	uyd.exe
2012	QTalk.exe
2836	spolsvt.exe
3196	spolsvt.exe
3372	svcoth.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

uyd.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Çý¶¯ÈËÉú = "C:\\Users\\Public\\Documents\\sougou\\PTvrst.exe"	uyd.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

uyd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	uyd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

QTalk.exespolsvt.exe

description	pid	Process	procid_target
PID 2012 set thread context of 2836	2012	QTalk.exe	95
PID 2836 set thread context of 3196	2836	spolsvt.exe	96
PID 2836 set thread context of 3372	2836	spolsvt.exe	99

Drops file in Program Files directory 5 IoCs

Processes:

sg.tmpwin32-quickq.exe

description	ioc	Process
File created	C:\Program Files (x86)\uyd.exe	sg.tmp
File opened for modification	C:\Program Files (x86)\uyd.exe	sg.tmp
File created	C:\Program Files (x86)\win32-quickq.exe	sg.tmp
File opened for modification	C:\Program Files (x86)\win32-quickq.exe	sg.tmp
File opened for modification	C:\Program Files (x86)\Internet Explorer\images	win32-quickq.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

QTalk.exespolsvt.exespolsvt.exesvcoth.exewin32-quickq.exewin32-quickq.exeuyd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QTalk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spolsvt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spolsvt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svcoth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32-quickq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32-quickq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uyd.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

uyd.exeQTalk.exewin32-quickq.exespolsvt.exe

pid	Process
4912	uyd.exe
4912	uyd.exe
4912	uyd.exe
4912	uyd.exe
4912	uyd.exe
4912	uyd.exe
2012	QTalk.exe
2012	QTalk.exe
2012	QTalk.exe
2012	QTalk.exe
4340	win32-quickq.exe
4340	win32-quickq.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe
3196	spolsvt.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

win32-quickq.exewin32-quickq.exesg.tmpspolsvt.exe

description	pid	Process
Token: SeBackupPrivilege	4340	win32-quickq.exe
Token: SeRestorePrivilege	4340	win32-quickq.exe
Token: 33	4340	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	4340	win32-quickq.exe
Token: SeCreateGlobalPrivilege	4340	win32-quickq.exe
Token: 33	4340	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	4340	win32-quickq.exe
Token: 33	4340	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	4340	win32-quickq.exe
Token: SeBackupPrivilege	2336	win32-quickq.exe
Token: SeRestorePrivilege	2336	win32-quickq.exe
Token: 33	2336	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2336	win32-quickq.exe
Token: 33	4340	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	4340	win32-quickq.exe
Token: SeRestorePrivilege	1072	sg.tmp
Token: 35	1072	sg.tmp
Token: SeSecurityPrivilege	1072	sg.tmp
Token: SeSecurityPrivilege	1072	sg.tmp
Token: 33	4340	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	4340	win32-quickq.exe
Token: SeDebugPrivilege	4340	win32-quickq.exe
Token: SeDebugPrivilege	3196	spolsvt.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

uyd.exeQTalk.exespolsvt.exe

pid	Process
4912	uyd.exe
4912	uyd.exe
2012	QTalk.exe
2012	QTalk.exe
2836	spolsvt.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

win32-quickq.exeuyd.exeQTalk.exespolsvt.exe

description	pid	Process	procid_target
PID 4340 wrote to memory of 4920	4340	win32-quickq.exe	82
PID 4340 wrote to memory of 4920	4340	win32-quickq.exe	82
PID 4340 wrote to memory of 2336	4340	win32-quickq.exe	84
PID 4340 wrote to memory of 2336	4340	win32-quickq.exe	84
PID 4340 wrote to memory of 2336	4340	win32-quickq.exe	84
PID 4340 wrote to memory of 1072	4340	win32-quickq.exe	87
PID 4340 wrote to memory of 1072	4340	win32-quickq.exe	87
PID 4340 wrote to memory of 1072	4340	win32-quickq.exe	87
PID 4340 wrote to memory of 4912	4340	win32-quickq.exe	91
PID 4340 wrote to memory of 4912	4340	win32-quickq.exe	91
PID 4340 wrote to memory of 4912	4340	win32-quickq.exe	91
PID 4912 wrote to memory of 2012	4912	uyd.exe	94
PID 4912 wrote to memory of 2012	4912	uyd.exe	94
PID 4912 wrote to memory of 2012	4912	uyd.exe	94
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2012 wrote to memory of 2836	2012	QTalk.exe	95
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3196	2836	spolsvt.exe	96
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99
PID 2836 wrote to memory of 3372	2836	spolsvt.exe	99

C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
"C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c set
  2⤵
  PID:4920
- C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
  PECMD**pecmd-cmd* PUTF -dd -skipb=1627136 -len=106081923 "C:\Users\Admin\AppData\Local\Temp\~8307829302004953342.tmp",,C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2336
- C:\Users\Admin\AppData\Local\Temp\~5589563807305567628~\sg.tmp
  7zG_exe x "C:\Users\Admin\AppData\Local\Temp\~8307829302004953342.tmp" -y -aoa -o"C:\Program Files (x86)\"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1072
- C:\Program Files (x86)\uyd.exe
  "C:\Program Files (x86)\\uyd.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Users\Public\Documents\sougou\V4.6.80\Bin\QTalk.exe
    C:\Users\Public\Documents\sougou\V4.6.80\Bin\QTalk.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2012
  - - C:\Users\Public\Documents\sougou\spolsvt.exe
      C:\Users\Public\Documents\sougou\spolsvt.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2836
    - - C:\Users\Public\Documents\dd\spolsvt.exe
        
        C:\Users\Public\Documents\dd\spolsvt.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3196
    - - C:\Users\Public\Documents\uu\svcoth.exe
        
        C:\Users\Public\Documents\uu\svcoth.exe
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\uyd.exe

Filesize
7.3MB

MD5
e30b109ffb149babd61981c077791c81

SHA1
75a18a92c39052b89bc5694460a539e594c93d45

SHA256
9b143f7122019dbcdb938c0d2ede3f13327ebc1da4b35dc499cfc8471beeccb1

SHA512
72be7365c4e20faffbf1a0ac9ee94492940dcd9fdf1071cb93b1ad133b6ec6df23196f43d248d05609a4bc1ad04f7d159a8556eeef99239990e26354c54907b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\~5589563807305567628~\sg.tmp

Filesize
715KB

MD5
7c4718943bd3f66ebdb47ccca72c7b1e

SHA1
f9edfaa7adb8fa528b2e61b2b251f18da10a6969

SHA256
4cc32d00338fc7b206a7c052297acf9ac304ae7de9d61a2475a116959c1524fc

SHA512
e18c40d646fa4948f90f7471da55489df431f255041ebb6dcef86346f91078c9b27894e27216a4b2fe2a1c5e501c7953c77893cf696930123d28a322d49e1516

Download Submit
C:\Users\Public\Documents\dd\spolsvt.exe

Filesize
16KB

MD5
cdce4713e784ae069d73723034a957ff

SHA1
9a393a6bab6568f1a774fb753353223f11367e09

SHA256
b29e48102ecb3d3614e8980a8b8cc63dd2b993c6346f466479244ec2b47b69d8

SHA512
0a3a59a305cc2a6fad4e1315b0bcc5a4129595dfe1e8b703363fa02528d2d7c48d3fd22d365708be84a5557cf1916873df9563c454732f93f94a66e7e3b9fb0f

Download Submit
C:\Users\Public\Documents\sougou\Mpec.mbt

Filesize
219KB

MD5
6fa8f3c5e7670094a1f66035bdce541c

SHA1
122fcba8f761eb3695a948b68be2cb803a43d903

SHA256
f2a8b444d6cc5d3a88d10e5d2388e91a17248a1191d8780c62761bae10574c45

SHA512
9e6d3b2d764e2ad716c9246c574af62eec2a6e76f1b95db7c8ac684372e6660a43d8dd2bbcabffe66013ea99612114dea28a62caaef530add20725a230672e67

Download Submit
C:\Users\Public\Documents\sougou\spolsvt.exe

Filesize
9KB

MD5
523d5c39f9d8d2375c3df68251fa2249

SHA1
d4ed365c44bec9246fc1a65a32a7791792647a10

SHA256
20e3dc90a3e83b6202e2a7f4603b60e5e859639cb68693426c400b13aaeabd78

SHA512
526e1bba30d03f1ac177c6ab7409187a730969c429cebef15da68ffcf44b3b93227781eebc827b2f7a0fa17c391e00a0e532263fd0167aeaeb0456f96cfe3ae4

Download Submit
memory/2012-53-0x00000000030F0000-0x00000000030F1000-memory.dmp

Filesize
4KB

Download
memory/2012-67-0x0000000000400000-0x0000000001354000-memory.dmp

Filesize
15.3MB

Download
memory/2012-54-0x0000000000400000-0x0000000001354000-memory.dmp

Filesize
15.3MB

Download
memory/2012-51-0x00000000019B0000-0x00000000019B1000-memory.dmp

Filesize
4KB

Download
memory/2012-52-0x00000000030E0000-0x00000000030E1000-memory.dmp

Filesize
4KB

Download
memory/2012-48-0x0000000001470000-0x0000000001471000-memory.dmp

Filesize
4KB

Download
memory/2012-50-0x00000000019A0000-0x00000000019A1000-memory.dmp

Filesize
4KB

Download
memory/2012-49-0x0000000001490000-0x0000000001491000-memory.dmp

Filesize
4KB

Download
memory/2836-58-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2836-60-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2836-64-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2836-65-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2836-59-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/3196-73-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3196-74-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3196-79-0x0000000010000000-0x0000000010029000-memory.dmp

Filesize
164KB

Download
memory/3196-78-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3196-72-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3372-88-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3372-89-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3372-90-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3372-91-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3372-92-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3372-96-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4912-32-0x0000000003100000-0x0000000003101000-memory.dmp

Filesize
4KB

Download
memory/4912-26-0x0000000000400000-0x0000000001354000-memory.dmp

Filesize
15.3MB

Download
memory/4912-33-0x0000000000400000-0x0000000001354000-memory.dmp

Filesize
15.3MB

Download
memory/4912-68-0x0000000000400000-0x0000000001354000-memory.dmp

Filesize
15.3MB

Download
memory/4912-31-0x0000000001550000-0x0000000001551000-memory.dmp

Filesize
4KB

Download
memory/4912-28-0x00000000014E0000-0x00000000014E1000-memory.dmp

Filesize
4KB

Download
memory/4912-30-0x0000000001540000-0x0000000001541000-memory.dmp

Filesize
4KB

Download
memory/4912-29-0x0000000001520000-0x0000000001521000-memory.dmp

Filesize
4KB

Download
memory/4912-27-0x00000000013A0000-0x00000000013A1000-memory.dmp

Filesize
4KB

Download