Malware Analysis Report

2024-12-07 13:40

Sample ID 241108-h8p3dsxmcw
Target 2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz
SHA256 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e
Tags
rootkit purplefox discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e

Threat Level: Known bad

The file 2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz was found to be: Known bad.

Malicious Activity Summary

rootkit purplefox discovery trojan

Purplefox family

PurpleFox

Detect PurpleFox Rootkit

Loads dropped DLL

Executes dropped EXE

Drops file in System32 directory

System Location Discovery: System Language Discovery

Unsigned PE

System policy modification

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-08 07:24

Signatures

Detect PurpleFox Rootkit

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

Purplefox family

purplefox

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-08 07:24

Reported

2024-11-08 07:27

Platform

win7-20240729-en

Max time kernel

147s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe"

Signatures

Detect PurpleFox Rootkit

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

PurpleFox

rootkit trojan purplefox

Purplefox family

purplefox

Executes dropped EXE

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

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Mfiqc.exe C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A
File opened for modification C:\Windows\SysWOW64\Mfiqc.exe C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.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\SysWOW64\Mfiqc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Mfiqc.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-b2-d5-76-d1-c9\WpadDecision = "0" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7443692-E514-43B5-B715-15866F785080} C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7443692-E514-43B5-B715-15866F785080}\WpadDecisionReason = "1" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-b2-d5-76-d1-c9\WpadDecisionReason = "1" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-b2-d5-76-d1-c9\WpadDecisionTime = c0d8724aaf31db01 C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7443692-E514-43B5-B715-15866F785080}\WpadDecisionTime = c0d8724aaf31db01 C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0127000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-b2-d5-76-d1-c9 C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7443692-E514-43B5-B715-15866F785080}\0a-b2-d5-76-d1-c9 C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7443692-E514-43B5-B715-15866F785080}\WpadNetworkName = "Network 3" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{A7443692-E514-43B5-B715-15866F785080}\WpadDecision = "0" C:\Windows\SysWOW64\Mfiqc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Mfiqc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Mfiqc.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Mfiqc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Mfiqc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1700 wrote to memory of 2392 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe
PID 1700 wrote to memory of 2392 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe
PID 1700 wrote to memory of 2392 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe
PID 1700 wrote to memory of 2392 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe

System policy modification

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\SoftwareSASGeneration = "3" C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe"

C:\Windows\SysWOW64\Mfiqc.exe

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

C:\Windows\SysWOW64\Mfiqc.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 qifu-api.baidubce.com udp
CN 182.61.62.106:443 qifu-api.baidubce.com tcp
CN 182.61.200.153:443 qifu-api.baidubce.com tcp
CN 112.34.112.38:443 qifu-api.baidubce.com tcp
US 8.8.8.8:53 myip.ipip.net udp
US 104.22.31.153:80 myip.ipip.net tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp

Files

C:\Windows\SysWOW64\Mfiqc.exe

MD5 6f6bb833a8191f08decacba9730e6d7d
SHA1 0597752575d4f9b9d71f5951506f6a0a6b4645e7
SHA256 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e
SHA512 7e143310c40100b1ce85504e755a8686d5a5345e03fae4f28e618102ac2e852edee0e004524204cdbb1d3f0a6b411a4c7c037cb7bb8f5111a68ac4ca945013b6

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-08 07:24

Reported

2024-11-08 07:27

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe"

Signatures

Detect PurpleFox Rootkit

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

PurpleFox

rootkit trojan purplefox

Purplefox family

purplefox

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Mfiqc.exe C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A
File opened for modification C:\Windows\SysWOW64\Mfiqc.exe C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.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\SysWOW64\Mfiqc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Mfiqc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" C:\Windows\SysWOW64\Mfiqc.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ C:\Windows\SysWOW64\Mfiqc.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" C:\Windows\SysWOW64\Mfiqc.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Mfiqc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Mfiqc.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Mfiqc.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Mfiqc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 456 wrote to memory of 1972 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe
PID 456 wrote to memory of 1972 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe
PID 456 wrote to memory of 1972 N/A C:\Windows\SysWOW64\Mfiqc.exe C:\Windows\SysWOW64\Mfiqc.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\SoftwareSASGeneration = "3" C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe"

C:\Windows\SysWOW64\Mfiqc.exe

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

C:\Windows\SysWOW64\Mfiqc.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 qifu-api.baidubce.com udp
CN 110.242.68.112:443 qifu-api.baidubce.com tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
CN 124.237.176.106:443 qifu-api.baidubce.com tcp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
CN 182.61.200.153:443 qifu-api.baidubce.com tcp
US 8.8.8.8:53 myip.ipip.net udp
US 104.22.30.153:80 myip.ipip.net tcp
US 8.8.8.8:53 153.30.22.104.in-addr.arpa udp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp
N/A 127.0.0.1:18926 tcp

Files

C:\Windows\SysWOW64\Mfiqc.exe

MD5 6f6bb833a8191f08decacba9730e6d7d
SHA1 0597752575d4f9b9d71f5951506f6a0a6b4645e7
SHA256 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e
SHA512 7e143310c40100b1ce85504e755a8686d5a5345e03fae4f28e618102ac2e852edee0e004524204cdbb1d3f0a6b411a4c7c037cb7bb8f5111a68ac4ca945013b6