fatalrat | 9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71

Analysis

max time kernel
117s
max time network
148s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 08:41

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General

Target

9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe
Size

17.8MB
MD5

b85f7835e737e11d4b8ad8029e06f0d9
SHA1

e0e587a3c4e99e7a810996dc355008d94d5f0f82
SHA256

9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71
SHA512

51c4960e477853c28bda3f1e94dbdf4d565ff36e8bf7b7443f79d3e70de34d62057d275a7eac409d7f1db7c4936c4033de87329a19da83a6f3f62513b5ee82c5
SSDEEP

393216:dfyt/Ya80GUH+sz6LXXKSGiY4mr8+qcyDuenhsXmRAEgjv0wOsAjrJ:UY30GUegy1A8hZSeK2RAEgOs6rJ

Score

10^/10

fatalrat 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

Fatal Rat payload 1 IoCs

rat infostealer

resource	yara_rule
behavioral1/memory/2576-77-0x0000000010000000-0x0000000010029000-memory.dmp	fatalrat

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000800000001653a-6.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
1484	cmd.exe

Executes dropped EXE 5 IoCs

pid	Process
2788	u1.exe
2648	QTalk.exe
2264	spolsvt.exe
2576	spolsvt.exe
1516	svcoth.exe

Loads dropped DLL 8 IoCs

pid	Process
3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe
2788	u1.exe
2648	QTalk.exe
2648	QTalk.exe
2264	spolsvt.exe
2264	spolsvt.exe
2264	spolsvt.exe
2264	spolsvt.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 2648 set thread context of 2264	2648	QTalk.exe	32
PID 2264 set thread context of 2576	2264	spolsvt.exe	33
PID 2264 set thread context of 1516	2264	spolsvt.exe	37

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3044-0-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral1/memory/3044-90-0x0000000000400000-0x0000000000433000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\letsvpn-latest.exe	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe
File opened for modification	C:\Program Files (x86)\letsvpn-latest.exe	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe
File created	C:\Program Files (x86)\u1.exe	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe
File opened for modification	C:\Program Files (x86)\u1.exe	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.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	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.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 56 IoCs

pid	Process
2788	u1.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe
2576	spolsvt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	spolsvt.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2788	u1.exe
2788	u1.exe
2648	QTalk.exe
2648	QTalk.exe
2264	spolsvt.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2788	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	30
PID 3044 wrote to memory of 2788	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	30
PID 3044 wrote to memory of 2788	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	30
PID 3044 wrote to memory of 2788	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	30
PID 2788 wrote to memory of 2648	2788	u1.exe	31
PID 2788 wrote to memory of 2648	2788	u1.exe	31
PID 2788 wrote to memory of 2648	2788	u1.exe	31
PID 2788 wrote to memory of 2648	2788	u1.exe	31
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2648 wrote to memory of 2264	2648	QTalk.exe	32
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 2264 wrote to memory of 2576	2264	spolsvt.exe	33
PID 3044 wrote to memory of 1484	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	34
PID 3044 wrote to memory of 1484	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	34
PID 3044 wrote to memory of 1484	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	34
PID 3044 wrote to memory of 1484	3044	9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe	34
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37
PID 2264 wrote to memory of 1516	2264	spolsvt.exe	37

C:\Users\Admin\AppData\Local\Temp\9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe
"C:\Users\Admin\AppData\Local\Temp\9e61eb2d2be564e1cf08562eddd1ceb4988386f2b6d91602593eeb52cc81af71.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Program Files (x86)\u1.exe
  "C:\Program Files (x86)\u1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - 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:2788
- - 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
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2648
  - - C:\Users\Public\Documents\sougou\spolsvt.exe
      C:\Users\Public\Documents\sougou\spolsvt.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2264
    - - 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:2576
    - - 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:1516
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1484

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:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd

Filesize
300B

MD5
e2c360b2026a5e54c0333d3e764bf075

SHA1
2dc623c912fb6598f3a401169e02892691f1515e

SHA256
0a3ff5c5fe465d587b28ce8858eb16ff72c99e58201aba554ecc56a7951330e1

SHA512
a136fa3e318489a068494dee440c2a960499774525d189ad5c5e2b6d8ce605b930d40c3aba7715bf3fd9fb836ee3572de15c87ab158f79c2749623bbe7dd673e

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
\Program Files (x86)\u1.exe

Filesize
3.4MB

MD5
37e0b13e0b6f991db932f0920a63da57

SHA1
013956f4312da803ee7145e44b16c40faaa0a6d5

SHA256
05f77365e284df754cba4ebcd3d6af41c673194dfc7a2375bacce90b9795ff0e

SHA512
a17a65ea4c635afae2c737e40a07af4a8266b98321d96c5577ceede0f95dc435ffebf70e3a31f377ce9300b0bf95bb7a45a6561e68cf09ee03225628c9c48a8b

Download Submit
memory/1516-112-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-108-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-116-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-111-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-102-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-106-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-105-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1516-103-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2264-49-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2264-44-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-41-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-38-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-36-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2264-34-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2576-72-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-68-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-66-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-64-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-63-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-62-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-77-0x0000000010000000-0x0000000010029000-memory.dmp

Filesize
164KB

Download
memory/2648-50-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/2648-29-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/2788-53-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/2788-24-0x0000000002600000-0x0000000002BE9000-memory.dmp

Filesize
5.9MB

Download
memory/2788-12-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/2788-15-0x0000000000401000-0x00000000004A1000-memory.dmp

Filesize
640KB

Download
memory/2788-13-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/2788-14-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/2788-11-0x0000000000400000-0x00000000009E9000-memory.dmp

Filesize
5.9MB

Download
memory/3044-90-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3044-0-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/3044-9-0x0000000002A40000-0x0000000003029000-memory.dmp

Filesize
5.9MB

Download