fatalrat | 3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5

Analysis

max time kernel
92s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2024 04:51

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General

Target

3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe
Size

69.8MB
MD5

327884b448705fdf0c44adb302f4e265
SHA1

44d8155588ef21f57757d1e0f1292f27832b684a
SHA256

3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5
SHA512

5566388610f6c62294a22e474226ff9264ae48e26c5564e78fc22879ef79331774a455e6988131b46821021a4b899bbcbc5a651ae5428d8045567714b49c570c
SSDEEP

1572864:95yaqg3nPbpuwNJ5GKzUqoyEwNOu25BY9eTs/aliLcde5OVV08:9BxuwJLEwN0g9eTs/aliQduOY8

Score

10^/10

fatalrat discovery evasion infostealer persistence rat trojan upx vmprotect

Malware Config

Signatures

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

Fatal Rat payload 1 IoCs

rat infostealer

Processes:

resource	yara_rule
behavioral2/memory/756-51-0x0000000010000000-0x0000000010029000-memory.dmp	fatalrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe

Executes dropped EXE 5 IoCs

Processes:

u1.exeQTalk.exespolsvt.exespolsvt.exesvcoth.exe

pid	Process
3168	u1.exe
1256	QTalk.exe
5084	spolsvt.exe
756	spolsvt.exe
2424	svcoth.exe

VMProtect packed file 6 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
behavioral2/files/0x0007000000023cb1-7.dat	vmprotect
behavioral2/memory/3168-15-0x0000000000400000-0x0000000000DD8000-memory.dmp	vmprotect
behavioral2/memory/3168-16-0x0000000000400000-0x0000000000DD8000-memory.dmp	vmprotect
behavioral2/memory/1256-25-0x0000000000400000-0x0000000000DD8000-memory.dmp	vmprotect
behavioral2/memory/1256-39-0x0000000000400000-0x0000000000DD8000-memory.dmp	vmprotect
behavioral2/memory/3168-50-0x0000000000400000-0x0000000000DD8000-memory.dmp	vmprotect

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

u1.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Çý¶¯ÈËÉú = "C:\\Users\\Public\\Documents\\sougou\\PTvrst.exe"	u1.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

u1.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	u1.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

QTalk.exespolsvt.exe

description	pid	Process	procid_target
PID 1256 set thread context of 5084	1256	QTalk.exe	84
PID 5084 set thread context of 756	5084	spolsvt.exe	87
PID 5084 set thread context of 2424	5084	spolsvt.exe	93

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4932-0-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral2/memory/4932-63-0x0000000000400000-0x00000000004E7000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

Processes:

3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe

description	ioc	Process
File created	C:\Program Files (x86)\LineInst.exe	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe
File opened for modification	C:\Program Files (x86)\LineInst.exe	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe
File created	C:\Program Files (x86)\u1.exe	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe
File opened for modification	C:\Program Files (x86)\u1.exe	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.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:

spolsvt.exespolsvt.execmd.exesvcoth.exe3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exeu1.exeQTalk.exe

description	ioc	Process
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svcoth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	u1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QTalk.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

u1.exespolsvt.exe

pid	Process
3168	u1.exe
3168	u1.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe
756	spolsvt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

spolsvt.exe

description	pid	Process
Token: SeDebugPrivilege	756	spolsvt.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

u1.exeQTalk.exespolsvt.exe

pid	Process
3168	u1.exe
3168	u1.exe
1256	QTalk.exe
1256	QTalk.exe
5084	spolsvt.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exeu1.exeQTalk.exespolsvt.exe

description	pid	Process	procid_target
PID 4932 wrote to memory of 3168	4932	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe	82
PID 4932 wrote to memory of 3168	4932	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe	82
PID 4932 wrote to memory of 3168	4932	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe	82
PID 3168 wrote to memory of 1256	3168	u1.exe	83
PID 3168 wrote to memory of 1256	3168	u1.exe	83
PID 3168 wrote to memory of 1256	3168	u1.exe	83
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 1256 wrote to memory of 5084	1256	QTalk.exe	84
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 5084 wrote to memory of 756	5084	spolsvt.exe	87
PID 4932 wrote to memory of 3020	4932	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe	88
PID 4932 wrote to memory of 3020	4932	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe	88
PID 4932 wrote to memory of 3020	4932	3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe	88
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93
PID 5084 wrote to memory of 2424	5084	spolsvt.exe	93

C:\Users\Admin\AppData\Local\Temp\3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe
"C:\Users\Admin\AppData\Local\Temp\3c2a21763cafe33f7c8339403434ba7478d9b1b8b7ca324d1fdc1c2eecd5abb5.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Program Files (x86)\u1.exe
  "C:\Program Files (x86)\u1.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:3168
- - 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:1256
  - - 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:5084
    - - 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:756
    - - 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:2424
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd" "
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3020

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\u1.exe

Filesize
3.9MB

MD5
574c2c09d400794506b04396f81d1eb1

SHA1
14ea7059ae841ba59caf0141efc44e70fb969423

SHA256
89bbf6e476c6d4c33a692704e4a97492cfedfd7d7b49f02e064c1f1528f28b43

SHA512
c11a6b4f236fcab99d13c2a3ed322a14282165ba5363412b39da68905b8b9e030cfdd23f4d3101ab230459f5375deb8ea86d5b3ca7b64156985114fcbfbeb0c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd

Filesize
300B

MD5
a0ff47fc54316884ef427b75bbcfebf9

SHA1
c22e7888b2e794aa183df04de33a715a51a295fb

SHA256
328af6945b5243987e6d9c33618efd1b8f0584a73cf4eba6039d2f90cdb79435

SHA512
64c3a8d9d3ba09fbf16df58fea8dae629066a62f07887a550ab04201493f4848262117a4f21dbad66874d7a6a9574dd6c25263dbedbe8472c67b519c42240c18

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/756-44-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/756-49-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/756-45-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/756-51-0x0000000010000000-0x0000000010029000-memory.dmp

Filesize
164KB

Download
memory/756-43-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1256-39-0x0000000000400000-0x0000000000DD8000-memory.dmp

Filesize
9.8MB

Download
memory/1256-25-0x0000000000400000-0x0000000000DD8000-memory.dmp

Filesize
9.8MB

Download
memory/2424-69-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2424-74-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2424-71-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2424-77-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2424-72-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2424-70-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3168-50-0x0000000000400000-0x0000000000DD8000-memory.dmp

Filesize
9.8MB

Download
memory/3168-16-0x0000000000400000-0x0000000000DD8000-memory.dmp

Filesize
9.8MB

Download
memory/3168-15-0x0000000000400000-0x0000000000DD8000-memory.dmp

Filesize
9.8MB

Download
memory/4932-0-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/4932-63-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/5084-37-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5084-30-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5084-31-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5084-32-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5084-36-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download