Malware Analysis Report

2025-03-15 03:54

Sample ID 230705-p4ty4sdh8v
Target iexpioreexe.exe
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
Tags
fatalrat infostealer rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3

Threat Level: Known bad

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

Malicious Activity Summary

fatalrat infostealer rat

FatalRat

Fatal Rat payload

Executes dropped EXE

Drops file in Windows directory

Unsigned PE

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-05 12:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-05 12:53

Reported

2023-07-05 12:56

Platform

win7-20230703-en

Max time kernel

28s

Max time network

151s

Command Line

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

Signatures

FatalRat

infostealer rat 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\Jklmno.exe N/A
N/A N/A C:\Windows\Jklmno.exe N/A

Drops file in Windows directory

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

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Jklmno.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Jklmno.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie C:\Windows\Jklmno.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7" C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Jklmno Qrstuvwx C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet C:\Windows\Jklmno.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Jklmno Qrstuvwx\Group = "Fatal" C:\Windows\Jklmno.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Jklmno Qrstuvwx\InstallTime = "2023-07-05 12:53" C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum C:\Windows\Jklmno.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 708 wrote to memory of 2924 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe
PID 708 wrote to memory of 2924 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe
PID 708 wrote to memory of 2924 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe
PID 708 wrote to memory of 2924 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe

Processes

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

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

C:\Windows\Jklmno.exe

C:\Windows\Jklmno.exe

C:\Windows\Jklmno.exe

C:\Windows\Jklmno.exe Win7

Network

Country Destination Domain Proto
CN 120.79.43.38:8085 tcp

Files

memory/2312-54-0x0000000010000000-0x000000001001C000-memory.dmp

C:\Windows\Jklmno.exe

MD5 667aca3b0011aebd3ac1eb04a929e79b
SHA1 7489d2101aaa8057fdfe8c22cca54df999f9bd7b
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
SHA512 ddd335b9af141352409b1a94ca0020a581ba19b5cfa3edb9daad0805ce51d8a4d12ce6f5a4e0742db9cab7f92ae67f83b3a51f88dc018821aa0f8edf5e636b45

C:\Windows\Jklmno.exe

MD5 667aca3b0011aebd3ac1eb04a929e79b
SHA1 7489d2101aaa8057fdfe8c22cca54df999f9bd7b
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
SHA512 ddd335b9af141352409b1a94ca0020a581ba19b5cfa3edb9daad0805ce51d8a4d12ce6f5a4e0742db9cab7f92ae67f83b3a51f88dc018821aa0f8edf5e636b45

C:\Windows\Jklmno.exe

MD5 667aca3b0011aebd3ac1eb04a929e79b
SHA1 7489d2101aaa8057fdfe8c22cca54df999f9bd7b
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
SHA512 ddd335b9af141352409b1a94ca0020a581ba19b5cfa3edb9daad0805ce51d8a4d12ce6f5a4e0742db9cab7f92ae67f83b3a51f88dc018821aa0f8edf5e636b45

Analysis: behavioral2

Detonation Overview

Submitted

2023-07-05 12:53

Reported

2023-07-05 12:56

Platform

win10v2004-20230703-en

Max time kernel

142s

Max time network

150s

Command Line

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

Signatures

FatalRat

infostealer rat 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\Jklmno.exe N/A
N/A N/A C:\Windows\Jklmno.exe N/A

Drops file in Windows directory

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

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Windows\Jklmno.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Windows\Jklmno.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet C:\Windows\Jklmno.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Jklmno Qrstuvwx\InstallTime = "2023-07-05 12:54" C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM\CurrentControlSet\Services\Jklmno Qrstuvwx C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SYSTEM C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Jklmno Qrstuvwx C:\Windows\Jklmno.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\System\CurrentControlSet\Services\Jklmno Qrstuvwx\Group = "Fatal" C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum C:\Windows\Jklmno.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software C:\Windows\Jklmno.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7" C:\Windows\Jklmno.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1808 wrote to memory of 312 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe
PID 1808 wrote to memory of 312 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe
PID 1808 wrote to memory of 312 N/A C:\Windows\Jklmno.exe C:\Windows\Jklmno.exe

Processes

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

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

C:\Windows\Jklmno.exe

C:\Windows\Jklmno.exe

C:\Windows\Jklmno.exe

C:\Windows\Jklmno.exe Win7

Network

Country Destination Domain Proto
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
US 8.8.8.8:53 164.113.223.173.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
CN 120.79.43.38:8085 tcp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 38.43.79.120.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 13.173.189.20.in-addr.arpa udp

Files

memory/2644-133-0x0000000010000000-0x000000001001C000-memory.dmp

C:\Windows\Jklmno.exe

MD5 667aca3b0011aebd3ac1eb04a929e79b
SHA1 7489d2101aaa8057fdfe8c22cca54df999f9bd7b
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
SHA512 ddd335b9af141352409b1a94ca0020a581ba19b5cfa3edb9daad0805ce51d8a4d12ce6f5a4e0742db9cab7f92ae67f83b3a51f88dc018821aa0f8edf5e636b45

C:\Windows\Jklmno.exe

MD5 667aca3b0011aebd3ac1eb04a929e79b
SHA1 7489d2101aaa8057fdfe8c22cca54df999f9bd7b
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
SHA512 ddd335b9af141352409b1a94ca0020a581ba19b5cfa3edb9daad0805ce51d8a4d12ce6f5a4e0742db9cab7f92ae67f83b3a51f88dc018821aa0f8edf5e636b45

memory/1808-141-0x0000000010000000-0x000000001001C000-memory.dmp

C:\Windows\Jklmno.exe

MD5 667aca3b0011aebd3ac1eb04a929e79b
SHA1 7489d2101aaa8057fdfe8c22cca54df999f9bd7b
SHA256 f10495057c282936b7d00e5bed9c2eb0efdcef1e23ef60ec6be4566fb2626be3
SHA512 ddd335b9af141352409b1a94ca0020a581ba19b5cfa3edb9daad0805ce51d8a4d12ce6f5a4e0742db9cab7f92ae67f83b3a51f88dc018821aa0f8edf5e636b45