Malware Analysis Report

2024-09-22 14:45

Sample ID 240616-qrtm9ayfrq
Target eb896b51453c804f14c11eee64c0ff79.exe
SHA256 311198eeb76c5cb081151452a73159c194300121515e3fd875429152ae7761aa
Tags
gh0strat purplefox persistence rat rootkit trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

311198eeb76c5cb081151452a73159c194300121515e3fd875429152ae7761aa

Threat Level: Known bad

The file eb896b51453c804f14c11eee64c0ff79.exe was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan upx

Gh0strat

Detect PurpleFox Rootkit

Gh0st RAT payload

PurpleFox

Drops file in Drivers directory

Sets service image path in registry

Executes dropped EXE

Loads dropped DLL

Deletes itself

UPX packed file

Drops file in System32 directory

Unsigned PE

Suspicious behavior: LoadsDriver

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-16 13:30

Signatures

Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2024-06-16 13:30

Reported

2024-06-16 13:32

Platform

win7-20240611-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
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Gh0st RAT payload

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Gh0strat

rat gh0strat

PurpleFox

rootkit trojan purplefox

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\QAssist.sys C:\Windows\SysWOW64\Dumdu.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" C:\Windows\SysWOW64\Dumdu.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Dumdu.exe N/A
N/A N/A C:\Windows\SysWOW64\Dumdu.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Dumdu.exe C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe N/A
File opened for modification C:\Windows\SysWOW64\Dumdu.exe C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Dumdu.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Dumdu.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 2084 wrote to memory of 2720 N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe C:\Windows\SysWOW64\cmd.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 1652 wrote to memory of 2716 N/A C:\Windows\SysWOW64\Dumdu.exe C:\Windows\SysWOW64\Dumdu.exe
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2720 wrote to memory of 2620 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe

"C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe"

C:\Windows\SysWOW64\Dumdu.exe

C:\Windows\SysWOW64\Dumdu.exe -auto

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\EB896B~1.EXE > nul

C:\Windows\SysWOW64\Dumdu.exe

C:\Windows\SysWOW64\Dumdu.exe -acsi

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 www2.micrr0soft.com udp
HK 156.241.4.189:10092 www2.micrr0soft.com tcp
HK 156.241.4.189:10092 www2.micrr0soft.com tcp
HK 156.241.4.189:10092 www2.micrr0soft.com tcp
HK 156.241.4.189:10092 www2.micrr0soft.com tcp
HK 156.241.4.189:10092 www2.micrr0soft.com tcp

Files

memory/2084-0-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2084-2-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2084-6-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2084-3-0x0000000010000000-0x00000000101A5000-memory.dmp

C:\Windows\SysWOW64\Dumdu.exe

MD5 eb896b51453c804f14c11eee64c0ff79
SHA1 e13b7ab9b10d698bb766141fccae0e7cf19c7195
SHA256 311198eeb76c5cb081151452a73159c194300121515e3fd875429152ae7761aa
SHA512 fadadbd549f79a8e466864b69fe4a2b7a0060e453c566501815d23c55f53bdc123f163bcfcf997ddf08bb088a63e616437269046102c4d58a60262f4d5082701

memory/1652-16-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1652-22-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2716-25-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2716-24-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2716-26-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2716-27-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2716-31-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2716-32-0x0000000010000000-0x00000000101A5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-16 13:30

Reported

2024-06-16 13:32

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
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Gh0st RAT payload

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Gh0strat

rat gh0strat

PurpleFox

rootkit trojan purplefox

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\QAssist.sys C:\Windows\SysWOW64\Dumdu.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" C:\Windows\SysWOW64\Dumdu.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Dumdu.exe N/A
N/A N/A C:\Windows\SysWOW64\Dumdu.exe N/A

UPX packed file

upx
Description Indicator Process Target
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Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Dumdu.exe C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe N/A
File opened for modification C:\Windows\SysWOW64\Dumdu.exe C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Dumdu.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Dumdu.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Dumdu.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe

"C:\Users\Admin\AppData\Local\Temp\eb896b51453c804f14c11eee64c0ff79.exe"

C:\Windows\SysWOW64\Dumdu.exe

C:\Windows\SysWOW64\Dumdu.exe -auto

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\EB896B~1.EXE > nul

C:\Windows\SysWOW64\Dumdu.exe

C:\Windows\SysWOW64\Dumdu.exe -acsi

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 www2.micrr0soft.com udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 www2.micrr0soft.com udp
US 8.8.8.8:53 www2.micrr0soft.com udp

Files

memory/2056-0-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2056-3-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2056-2-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2056-6-0x0000000010000000-0x00000000101A5000-memory.dmp

C:\Windows\SysWOW64\Dumdu.exe

MD5 eb896b51453c804f14c11eee64c0ff79
SHA1 e13b7ab9b10d698bb766141fccae0e7cf19c7195
SHA256 311198eeb76c5cb081151452a73159c194300121515e3fd875429152ae7761aa
SHA512 fadadbd549f79a8e466864b69fe4a2b7a0060e453c566501815d23c55f53bdc123f163bcfcf997ddf08bb088a63e616437269046102c4d58a60262f4d5082701

memory/3616-11-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3616-12-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3616-13-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3616-9-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3616-15-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1524-18-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1524-16-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1524-19-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1524-20-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1524-24-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1524-25-0x0000000010000000-0x00000000101A5000-memory.dmp