fatalrat | f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab

Analysis

max time kernel
96s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-11-2024 13:39

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General

Target

f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe
Size

18.0MB
MD5

ef344baa9dd4568c67430b298412a83a
SHA1

abf64392658bdc45aff764f171de15dcc8705924
SHA256

f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab
SHA512

f5bd7060aa96b9afe12ed2e98104851c422f6a30ea0679b7254a340e7170d59b48930118ce4f27cfd1f0679790d3c6d2c3c2de4f2d741d707eef8ce965ceeaf6
SSDEEP

393216:pIQZSINDOkEk7uQcUIYYBFrrV/eaxfo8ujuiuky0eP18KZahKdkGx:6+pDO4uQcUc1rxeaxfo5uishPmRpGx

Score

10^/10

fatalrat gh0strat aspackv2 discovery evasion infostealer persistence rat trojan upx

Malware Config

Signatures

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

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/memory/3656-87-0x0000000004D70000-0x0000000004EBD000-memory.dmp	family_gh0strat
behavioral2/memory/3656-88-0x0000000004D70000-0x0000000004EBD000-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
Gh0strat family
gh0strat

Fatal Rat payload 1 IoCs

rat infostealer

resource	yara_rule
behavioral2/memory/3656-57-0x0000000010000000-0x0000000010029000-memory.dmp	fatalrat

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0007000000023cb6-7.dat	aspack_v212_v242

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe

Executes dropped EXE 5 IoCs

pid	Process
1280	u1.exe
5008	QTalk.exe
4512	spolsvt.exe
3656	spolsvt.exe
4120	svcoth.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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

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

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 4512	5008	QTalk.exe	88
PID 4512 set thread context of 3656	4512	spolsvt.exe	91
PID 4512 set thread context of 4120	4512	spolsvt.exe	97

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4580-0-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral2/memory/4580-69-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral2/memory/3656-87-0x0000000004D70000-0x0000000004EBD000-memory.dmp	upx
behavioral2/memory/3656-84-0x0000000004D70000-0x0000000004EBD000-memory.dmp	upx
behavioral2/memory/3656-88-0x0000000004D70000-0x0000000004EBD000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\letsvpn-latest.exe	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe
File opened for modification	C:\Program Files (x86)\letsvpn-latest.exe	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe
File created	C:\Program Files (x86)\u1.exe	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe
File opened for modification	C:\Program Files (x86)\u1.exe	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.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

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	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.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

pid	Process
1280	u1.exe
1280	u1.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe
3656	spolsvt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3656	spolsvt.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1280	u1.exe
1280	u1.exe
5008	QTalk.exe
5008	QTalk.exe
4512	spolsvt.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 4580 wrote to memory of 1280	4580	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe	86
PID 4580 wrote to memory of 1280	4580	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe	86
PID 4580 wrote to memory of 1280	4580	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe	86
PID 1280 wrote to memory of 5008	1280	u1.exe	87
PID 1280 wrote to memory of 5008	1280	u1.exe	87
PID 1280 wrote to memory of 5008	1280	u1.exe	87
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 5008 wrote to memory of 4512	5008	QTalk.exe	88
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4512 wrote to memory of 3656	4512	spolsvt.exe	91
PID 4580 wrote to memory of 1664	4580	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe	93
PID 4580 wrote to memory of 1664	4580	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe	93
PID 4580 wrote to memory of 1664	4580	f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe	93
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97
PID 4512 wrote to memory of 4120	4512	spolsvt.exe	97

C:\Users\Admin\AppData\Local\Temp\f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe
"C:\Users\Admin\AppData\Local\Temp\f730660f20d767f006982c5ebb0461145bacd46a278754d713dbe51ca62793ab.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4580
- 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:1280
- - 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:5008
  - - 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:4512
    - - 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:3656
    - - 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:4120
- 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:1664

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

Replay Monitor

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Downloads

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

Filesize
3.4MB

MD5
3a990cab0c927b93e94e0bce3616c4eb

SHA1
48ba54041f7e73c9027ecf8cc1ae60bbb6ed8cb2

SHA256
c2ac41d80be057b82fc7e56e5a4c4e236a2a80b1c88e1a3568591259b405addb

SHA512
d37dade15857a568fb468df9b2a0c5f62f445305e44b27bc3997df15263073e98626cf502597926cef063bf55eee40756b9364d4f545836e8c79afae53c3f807

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

Filesize
300B

MD5
724275b8f44a59609dea0bf602e60fdd

SHA1
a61f4065925153551095a9bbb6e66f6435195843

SHA256
98076fe3e6f3b2c8b06fb12389e2292edd6125b281d740e702c4dc1ae497d3a4

SHA512
21bad861684bc8cc171f0c7096c0513dc0e12705097422361977cd03a0665ef373b04f395115f96c7377d73f4efcc42dc2f82657681f4402653f819cfe95a7b1

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/1280-15-0x0000000000600000-0x0000000000BEA000-memory.dmp

Filesize
5.9MB

Download
memory/1280-17-0x0000000000600000-0x0000000000BEA000-memory.dmp

Filesize
5.9MB

Download
memory/1280-18-0x0000000000600000-0x0000000000BEA000-memory.dmp

Filesize
5.9MB

Download
memory/1280-19-0x0000000000600000-0x0000000000BEA000-memory.dmp

Filesize
5.9MB

Download
memory/1280-16-0x0000000000600000-0x0000000000BEA000-memory.dmp

Filesize
5.9MB

Download
memory/1280-49-0x0000000000600000-0x0000000000BEA000-memory.dmp

Filesize
5.9MB

Download
memory/3656-50-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3656-52-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3656-88-0x0000000004D70000-0x0000000004EBD000-memory.dmp

Filesize
1.3MB

Download
memory/3656-57-0x0000000010000000-0x0000000010029000-memory.dmp

Filesize
164KB

Download
memory/3656-51-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3656-84-0x0000000004D70000-0x0000000004EBD000-memory.dmp

Filesize
1.3MB

Download
memory/3656-56-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3656-87-0x0000000004D70000-0x0000000004EBD000-memory.dmp

Filesize
1.3MB

Download
memory/4120-83-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4120-79-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4120-76-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4120-78-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4120-77-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4120-75-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/4512-34-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4512-35-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4512-36-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4512-41-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4512-40-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4580-69-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/4580-0-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/5008-29-0x00000000009D0000-0x0000000000FBA000-memory.dmp

Filesize
5.9MB

Download
memory/5008-44-0x00000000009D0000-0x0000000000FBA000-memory.dmp

Filesize
5.9MB

Download
memory/5008-31-0x00000000009D0000-0x0000000000FBA000-memory.dmp

Filesize
5.9MB

Download
memory/5008-30-0x00000000009D0000-0x0000000000FBA000-memory.dmp

Filesize
5.9MB

Download
memory/5008-28-0x00000000009D0000-0x0000000000FBA000-memory.dmp

Filesize
5.9MB

Download
memory/5008-27-0x00000000009D0000-0x0000000000FBA000-memory.dmp

Filesize
5.9MB

Download