fatalrat | c2d4be685a8d7c43049d0ed965418d0e2cf52f348c5b562244e62a2cf173b9a5

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-09-2024 05:35

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General

Target

win32-quickq.exe
Size

98.8MB
MD5

84c5c0f072140a6f345e4673ae3d9cfd
SHA1

cab780e0bc79ad5e30db288992d1e33ed285e012
SHA256

c2d4be685a8d7c43049d0ed965418d0e2cf52f348c5b562244e62a2cf173b9a5
SHA512

224f9576f25ea8f3b464a8bf138394e3f122f5d2204d7f9531907e3507defcb218e140393594ef4e1dd47791e13b12812a6a3aab9e5fdee3ba7fe10aeff344c4
SSDEEP

3145728:nHhrbcP7qpNIcQKhJyGogndBMSjaT5GPUofj:HTtvTyUdBpc/of

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/4000-63-0x0000000010000000-0x0000000010029000-memory.dmp	fatalrat

Executes dropped EXE 6 IoCs

Processes:

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

pid	Process
4108	sg.tmp
4228	uyd.exe
1448	QTalk.exe
532	spolsvt.exe
4000	spolsvt.exe
1308	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 1448 set thread context of 532	1448	QTalk.exe	98
PID 532 set thread context of 4000	532	spolsvt.exe	99
PID 532 set thread context of 1308	532	spolsvt.exe	101

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 9 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:

win32-quickq.exeQTalk.exespolsvt.exewin32-quickq.exewin32-quickq.exewin32-quickq.exeuyd.exespolsvt.exesvcoth.exe

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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

Processes:

PING.EXE

pid	Process
4852	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
4852	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

uyd.exewin32-quickq.exe

pid	Process
4228	uyd.exe
4228	uyd.exe
2344	win32-quickq.exe
2344	win32-quickq.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

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

description	pid	Process
Token: SeBackupPrivilege	2344	win32-quickq.exe
Token: SeRestorePrivilege	2344	win32-quickq.exe
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: SeCreateGlobalPrivilege	2344	win32-quickq.exe
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: SeBackupPrivilege	4788	win32-quickq.exe
Token: SeRestorePrivilege	4788	win32-quickq.exe
Token: 33	4788	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	4788	win32-quickq.exe
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: SeRestorePrivilege	4108	sg.tmp
Token: 35	4108	sg.tmp
Token: SeSecurityPrivilege	4108	sg.tmp
Token: SeSecurityPrivilege	4108	sg.tmp
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: SeDebugPrivilege	4000	spolsvt.exe
Token: SeDebugPrivilege	2344	win32-quickq.exe
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: 33	2344	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2344	win32-quickq.exe
Token: SeBackupPrivilege	2872	win32-quickq.exe
Token: SeRestorePrivilege	2872	win32-quickq.exe
Token: 33	2872	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	2872	win32-quickq.exe
Token: SeBackupPrivilege	3276	win32-quickq.exe
Token: SeRestorePrivilege	3276	win32-quickq.exe
Token: 33	3276	win32-quickq.exe
Token: SeIncBasePriorityPrivilege	3276	win32-quickq.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

uyd.exeQTalk.exespolsvt.exe

pid	Process
4228	uyd.exe
4228	uyd.exe
1448	QTalk.exe
1448	QTalk.exe
532	spolsvt.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

win32-quickq.exeuyd.exeQTalk.exespolsvt.exewin32-quickq.exewin32-quickq.execmd.exe

description	pid	Process	procid_target
PID 2344 wrote to memory of 4472	2344	win32-quickq.exe	86
PID 2344 wrote to memory of 4472	2344	win32-quickq.exe	86
PID 2344 wrote to memory of 4788	2344	win32-quickq.exe	88
PID 2344 wrote to memory of 4788	2344	win32-quickq.exe	88
PID 2344 wrote to memory of 4788	2344	win32-quickq.exe	88
PID 2344 wrote to memory of 4108	2344	win32-quickq.exe	89
PID 2344 wrote to memory of 4108	2344	win32-quickq.exe	89
PID 2344 wrote to memory of 4108	2344	win32-quickq.exe	89
PID 2344 wrote to memory of 4228	2344	win32-quickq.exe	93
PID 2344 wrote to memory of 4228	2344	win32-quickq.exe	93
PID 2344 wrote to memory of 4228	2344	win32-quickq.exe	93
PID 4228 wrote to memory of 1448	4228	uyd.exe	97
PID 4228 wrote to memory of 1448	4228	uyd.exe	97
PID 4228 wrote to memory of 1448	4228	uyd.exe	97
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 1448 wrote to memory of 532	1448	QTalk.exe	98
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 4000	532	spolsvt.exe	99
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 532 wrote to memory of 1308	532	spolsvt.exe	101
PID 2344 wrote to memory of 3276	2344	win32-quickq.exe	106
PID 2344 wrote to memory of 3276	2344	win32-quickq.exe	106
PID 2344 wrote to memory of 3276	2344	win32-quickq.exe	106
PID 2344 wrote to memory of 2872	2344	win32-quickq.exe	107
PID 2344 wrote to memory of 2872	2344	win32-quickq.exe	107
PID 2344 wrote to memory of 2872	2344	win32-quickq.exe	107
PID 2872 wrote to memory of 3308	2872	win32-quickq.exe	108
PID 2872 wrote to memory of 3308	2872	win32-quickq.exe	108
PID 3276 wrote to memory of 4776	3276	win32-quickq.exe	110
PID 3276 wrote to memory of 4776	3276	win32-quickq.exe	110
PID 3308 wrote to memory of 4852	3308	cmd.exe	112
PID 3308 wrote to memory of 4852	3308	cmd.exe	112

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:2344
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c set
  2⤵
  PID:4472
- C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
  PECMD**pecmd-cmd* PUTF -dd -skipb=1627136 -len=101934409 "C:\Users\Admin\AppData\Local\Temp\~8626999221604509680.tmp",,C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4788
- C:\Users\Admin\AppData\Local\Temp\~399646796168452992~\sg.tmp
  7zG_exe x "C:\Users\Admin\AppData\Local\Temp\~8626999221604509680.tmp" -y -aoa -o"C:\Program Files (x86)\"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:4108
- 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:4228
- - 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 use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1448
  - - 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:532
    - - 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 use of AdjustPrivilegeToken
        
        PID:4000
    - - 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:1308
- C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
  PECMD**pecmd-cmd* EXEC -wd:C: -hide cmd /c "C:\Users\Admin\AppData\Local\Temp\~5493768447413639225.cmd"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3276
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\~5493768447413639225.cmd"
    3⤵
    PID:4776
- C:\Users\Admin\AppData\Local\Temp\win32-quickq.exe
  PECMD**pecmd-cmd* EXEC -wd:C: -hide cmd /c "C:\Users\Admin\AppData\Local\Temp\~5502303560391889557.cmd"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2872
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\~5502303560391889557.cmd"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3308
  - - C:\Windows\system32\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4852

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

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
5.6MB

MD5
2295488c4b91a2e19e098945b5d52bf7

SHA1
2b2c51cf640e158b9a811bb520e1d5f0844ea021

SHA256
41bd610f99dfe3d52e864906ea891f2df5f4072726591697bfc678bfa26ecd69

SHA512
b47bab5f79d64eaaa6dea25cc6d69dc1aca6fd8ca39dc7813660eb20df2d592fdbf28b8671e01a0f0cbc388ed638aae397bbe056a926cc1dda8d0ff8611e02a4

Download Submit
C:\Users\Admin\AppData\Local\Temp\~399646796168452992~\sg.tmp

Filesize
715KB

MD5
7c4718943bd3f66ebdb47ccca72c7b1e

SHA1
f9edfaa7adb8fa528b2e61b2b251f18da10a6969

SHA256
4cc32d00338fc7b206a7c052297acf9ac304ae7de9d61a2475a116959c1524fc

SHA512
e18c40d646fa4948f90f7471da55489df431f255041ebb6dcef86346f91078c9b27894e27216a4b2fe2a1c5e501c7953c77893cf696930123d28a322d49e1516

Download Submit
C:\Users\Admin\AppData\Local\Temp\~5493768447413639225.cmd

Filesize
280B

MD5
42ff656bd4ee3e19a5828940041fdfdb

SHA1
2e3c7f0fd42dd48b014e82e9e5edf50664ae5698

SHA256
b326705c28abc9947182f84830e0e680d35551157b408a0f9cfd137279a02838

SHA512
4ba36b5e44c94df09b91b3557237dae6b74a9fe04da686f157938446cf635c464f616126e937400ee4d577708b3bdcb7f88cec8df23d344bfd7105b75f9ec7b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\~5502303560391889557.cmd

Filesize
365B

MD5
6108321ae8ebdf91ffa59bc72b4652b7

SHA1
c678d1a33139f8016c014dea6f5763671539ee59

SHA256
bd559493a4648bc69da3165aafc195ab519af9d10bf8454bf10d7bb5913bf0f5

SHA512
1d74b13759270b8f131f076ccf37b972c9d070e9bfe3ebab91b603d2227e873b96b580ea1901e88060eb8432757277c42de7f97886e5d8b7b00674de1d011710

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/532-49-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/532-43-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/532-44-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/532-45-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/532-50-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/1308-77-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1308-74-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1308-81-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1308-75-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1308-76-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1308-73-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1448-41-0x0000000000400000-0x00000000009D1000-memory.dmp

Filesize
5.8MB

Download
memory/1448-54-0x0000000000400000-0x00000000009D1000-memory.dmp

Filesize
5.8MB

Download
memory/4000-57-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4000-56-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4000-58-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4000-63-0x0000000010000000-0x0000000010029000-memory.dmp

Filesize
164KB

Download
memory/4000-62-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4228-68-0x0000000000400000-0x00000000009D1000-memory.dmp

Filesize
5.8MB

Download
memory/4228-25-0x0000000000400000-0x00000000009D1000-memory.dmp

Filesize
5.8MB

Download