purplefox | 428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e

General

Target

2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe
Size

11.4MB
MD5

6f6bb833a8191f08decacba9730e6d7d
SHA1

0597752575d4f9b9d71f5951506f6a0a6b4645e7
SHA256

428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e
SHA512

7e143310c40100b1ce85504e755a8686d5a5345e03fae4f28e618102ac2e852edee0e004524204cdbb1d3f0a6b411a4c7c037cb7bb8f5111a68ac4ca945013b6
SSDEEP

196608:tpbyXKAoNI2BF/f6BVGTgxVG8VGb3bvGenj01x5DkQ9L/5fgnpjEDIbRp8g6bCzy:+XKAmNeBCbQ9LRsZ/8g6bCzoPAc+Qpce

Score

10^/10

purplefox discovery rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/files/0x000c00000001226d-2.dat	purplefox_rootkit

PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Purplefox family
purplefox

Executes dropped EXE 2 IoCs

pid	Process
1700	Mfiqc.exe
2392	Mfiqc.exe

Loads dropped DLL 1 IoCs

pid	Process
1700	Mfiqc.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Mfiqc.exe	2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe
File opened for modification	C:\Windows\SysWOW64\Mfiqc.exe	2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	Mfiqc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Mfiqc.exe

Modifies data under HKEY_USERS 24 IoCs

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

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2112	2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe
Token: 33	2392	Mfiqc.exe
Token: SeIncBasePriorityPrivilege	2392	Mfiqc.exe
Token: 33	2392	Mfiqc.exe
Token: SeIncBasePriorityPrivilege	2392	Mfiqc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2392	1700	Mfiqc.exe	31
PID 1700 wrote to memory of 2392	1700	Mfiqc.exe	31
PID 1700 wrote to memory of 2392	1700	Mfiqc.exe	31
PID 1700 wrote to memory of 2392	1700	Mfiqc.exe	31

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\SoftwareSASGeneration = "3"	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:\Users\Admin\AppData\Local\Temp\2024-11-08_6f6bb833a8191f08decacba9730e6d7d_avoslocker_luca-stealer_mimikatz.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- System policy modification
PID:2112

C:\Windows\SysWOW64\Mfiqc.exe
C:\Windows\SysWOW64\Mfiqc.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\Mfiqc.exe
  C:\Windows\SysWOW64\Mfiqc.exe -acsi
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:2392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\Mfiqc.exe

Filesize
11.4MB

MD5
6f6bb833a8191f08decacba9730e6d7d

SHA1
0597752575d4f9b9d71f5951506f6a0a6b4645e7

SHA256
428792c0a53e4218e0ad0c79b9e3040637977ae118b60aeb6ee1d9a45bb33a3e

SHA512
7e143310c40100b1ce85504e755a8686d5a5345e03fae4f28e618102ac2e852edee0e004524204cdbb1d3f0a6b411a4c7c037cb7bb8f5111a68ac4ca945013b6

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Analysis

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