Malware Analysis Report

2025-03-15 03:49

Sample ID 250218-hpyv7aykem
Target 3.exe
SHA256 012d5c38bb315e316b4e53101f7bf44dc55b6b2301e626f13a8a5cad8fac0ba9
Tags
fatalrat discovery infostealer rat stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

012d5c38bb315e316b4e53101f7bf44dc55b6b2301e626f13a8a5cad8fac0ba9

Threat Level: Known bad

The file 3.exe was found to be: Known bad.

Malicious Activity Summary

fatalrat discovery infostealer rat stealer trojan

Fatalrat family

FatalRat

Fatal Rat payload

Executes dropped EXE

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-18 06:55

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-18 06:55

Reported

2025-02-18 06:57

Platform

win10v2004-20250217-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3.exe"

Signatures

FatalRat

stealer trojan fatalrat

Fatalrat family

fatalrat

Fatal Rat payload

rat infostealer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\3.exe N/A
N/A N/A C:\Windows\3.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\3.exe C:\Windows\3.exe N/A
File created C:\Windows\3.exe C:\Users\Admin\AppData\Local\Temp\3.exe N/A
File opened for modification C:\Windows\3.exe C:\Users\Admin\AppData\Local\Temp\3.exe N/A
File opened for modification C:\Windows\3.exe C:\Windows\3.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\3.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\3.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\3.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Lmnopq Stuvwxya C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Lmnopq Stuvwxya C:\Windows\3.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Lmnopq Stuvwxya\Group = "3" C:\Windows\3.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Lmnopq Stuvwxya\InstallTime = "2025-02-18 06:55" C:\Windows\3.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3.exe N/A
N/A N/A C:\Windows\3.exe N/A
N/A N/A C:\Windows\3.exe N/A
N/A N/A C:\Windows\3.exe N/A
N/A N/A C:\Windows\3.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\3.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\3.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3152 wrote to memory of 8 N/A C:\Windows\3.exe C:\Windows\3.exe
PID 3152 wrote to memory of 8 N/A C:\Windows\3.exe C:\Windows\3.exe
PID 3152 wrote to memory of 8 N/A C:\Windows\3.exe C:\Windows\3.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3.exe

"C:\Users\Admin\AppData\Local\Temp\3.exe"

C:\Windows\3.exe

C:\Windows\3.exe

C:\Windows\3.exe

C:\Windows\3.exe Win7

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
CN 183.230.162.88:8888 tcp
CN 183.230.162.88:8888 tcp
CN 183.230.162.88:8888 tcp
CN 183.230.162.88:8888 tcp

Files

memory/2884-0-0x0000000010000000-0x000000001001C000-memory.dmp

C:\Windows\3.exe

MD5 71d6ba66466828dfe5c7d8cadfd44c79
SHA1 b79ba0d33150e22e8afa5a9360e9a0dbc2df7e2d
SHA256 012d5c38bb315e316b4e53101f7bf44dc55b6b2301e626f13a8a5cad8fac0ba9
SHA512 3c7a1eb705e2188f9b0e355ec853a98529083a67051a567aa22f94770ae15c9105746fb1059ad6b840fc14f5fc680034c47be004c5ba28b907fab137a9ebb699

memory/3152-9-0x0000000010000000-0x000000001001C000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-18 06:55

Reported

2025-02-18 06:58

Platform

win7-20241010-en

Max time kernel

119s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3.exe"

Signatures

FatalRat

stealer trojan fatalrat

Fatalrat family

fatalrat

Fatal Rat payload

rat infostealer
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\3.exe N/A
N/A N/A C:\Windows\3.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\3.exe C:\Windows\3.exe N/A
File created C:\Windows\3.exe C:\Users\Admin\AppData\Local\Temp\3.exe N/A
File opened for modification C:\Windows\3.exe C:\Users\Admin\AppData\Local\Temp\3.exe N/A
File opened for modification C:\Windows\3.exe C:\Windows\3.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\3.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\3.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\3.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Lmnopq Stuvwxya C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet C:\Windows\3.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services C:\Windows\3.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Lmnopq Stuvwxya\Group = "3" C:\Windows\3.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Lmnopq Stuvwxya\InstallTime = "2025-02-18 06:56" C:\Windows\3.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3.exe N/A
N/A N/A C:\Windows\3.exe N/A
N/A N/A C:\Windows\3.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\3.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\3.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3068 wrote to memory of 2824 N/A C:\Windows\3.exe C:\Windows\3.exe
PID 3068 wrote to memory of 2824 N/A C:\Windows\3.exe C:\Windows\3.exe
PID 3068 wrote to memory of 2824 N/A C:\Windows\3.exe C:\Windows\3.exe
PID 3068 wrote to memory of 2824 N/A C:\Windows\3.exe C:\Windows\3.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3.exe

"C:\Users\Admin\AppData\Local\Temp\3.exe"

C:\Windows\3.exe

C:\Windows\3.exe

C:\Windows\3.exe

C:\Windows\3.exe Win7

Network

Country Destination Domain Proto
CN 183.230.162.88:8888 tcp
CN 183.230.162.88:8888 tcp
CN 183.230.162.88:8888 tcp
CN 183.230.162.88:8888 tcp

Files

memory/2848-0-0x0000000010000000-0x000000001001C000-memory.dmp

C:\Windows\3.exe

MD5 71d6ba66466828dfe5c7d8cadfd44c79
SHA1 b79ba0d33150e22e8afa5a9360e9a0dbc2df7e2d
SHA256 012d5c38bb315e316b4e53101f7bf44dc55b6b2301e626f13a8a5cad8fac0ba9
SHA512 3c7a1eb705e2188f9b0e355ec853a98529083a67051a567aa22f94770ae15c9105746fb1059ad6b840fc14f5fc680034c47be004c5ba28b907fab137a9ebb699