purplefox | 4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d

General

Target

4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe
Size

3.6MB
MD5

baecee8312e9a67ca151513e41ac84bf
SHA1

efebb50a06185ccf23c4a613c92001a1f0f50bf3
SHA256

4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d
SHA512

57cb8683cbe5463c201e3f604ccc020ba61f22ed992a1b59a91076409408dac7f17443f38327a7641c1c5d6c1869031699933033a78d35ef1147188bf85dae0e
SSDEEP

49152:moRLXMJPb7aa1u+ENFAoWo2DqbfQ1rmo6mxQXiDGTMD1TRLjXpWMiI:DpXMJPb1U+EKo2Dqb07BxQXGB3XpWHI

Score

10^/10

purplefox discovery persistence rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/844-17-0x0000000010000000-0x00000000101B0000-memory.dmp	purplefox_rootkit
behavioral1/memory/844-34-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit
behavioral1/memory/1988-35-0x0000000001330000-0x00000000014C1000-memory.dmp	purplefox_rootkit
behavioral1/memory/1988-39-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit
behavioral1/memory/1200-55-0x0000000000400000-0x0000000000591000-memory.dmp	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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\QAssist.sys	conhost.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys"	conhost.exe

Executes dropped EXE 3 IoCs

pid	Process
844	conhost.exe
1988	conhost.exe
1200	conhost.exe

Loads dropped DLL 1 IoCs

pid	Process
1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0008000000016c3a-11.dat	upx
behavioral1/memory/844-16-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/1696-13-0x000000001A880000-0x000000001AA11000-memory.dmp	upx
behavioral1/memory/844-34-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/1200-36-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/1988-39-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/1200-55-0x0000000000400000-0x0000000000591000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\conhost.exe	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe
File opened for modification	C:\Windows\conhost.exe	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe
File opened for modification	C:\Windows\conhost.exe	conhost.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2076	cmd.exe
1500	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1500	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1200	conhost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	844	conhost.exe
Token: SeLoadDriverPrivilege	1200	conhost.exe
Token: 33	1200	conhost.exe
Token: SeIncBasePriorityPrivilege	1200	conhost.exe
Token: 33	1200	conhost.exe
Token: SeIncBasePriorityPrivilege	1200	conhost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe
1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 844	1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe	30
PID 1696 wrote to memory of 844	1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe	30
PID 1696 wrote to memory of 844	1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe	30
PID 1696 wrote to memory of 844	1696	4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe	30
PID 1988 wrote to memory of 1200	1988	conhost.exe	32
PID 1988 wrote to memory of 1200	1988	conhost.exe	32
PID 1988 wrote to memory of 1200	1988	conhost.exe	32
PID 1988 wrote to memory of 1200	1988	conhost.exe	32
PID 844 wrote to memory of 2076	844	conhost.exe	33
PID 844 wrote to memory of 2076	844	conhost.exe	33
PID 844 wrote to memory of 2076	844	conhost.exe	33
PID 844 wrote to memory of 2076	844	conhost.exe	33
PID 2076 wrote to memory of 1500	2076	cmd.exe	35
PID 2076 wrote to memory of 1500	2076	cmd.exe	35
PID 2076 wrote to memory of 1500	2076	cmd.exe	35
PID 2076 wrote to memory of 1500	2076	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe
"C:\Users\Admin\AppData\Local\Temp\4f796d84e88afc6fbb94db40ad396e54ae4f9c90189fab78fec42baa56f2141d.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Windows\conhost.exe
  C:\Windows\conhost.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Windows\conhost.exe > nul
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:2076
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1500

C:\Windows\conhost.exe
C:\Windows\conhost.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\conhost.exe
  C:\Windows\conhost.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:1200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\conhost.exe

Filesize
652KB

MD5
4f883e7d4d89a581845bc451d7f7a90c

SHA1
15dd39b9401b946330288a147437af3d9722bdf1

SHA256
7c36b489a2fe329398415fd58a73c3b61f8127d4a4ebb002a64d604cfe2d7387

SHA512
56e54e4e03f783fddad2b61ace38f7adfec5bcc0f591aeb9004c82eb674daaafc584037f057123789bafbfedc914d01a7d92af685b2239b232668a3ef2e1f61f

Download Submit
\Users\Admin\AppData\Local\Temp\dzHPSocket4C.dll

Filesize
2.8MB

MD5
9134ef6a44e4a9cb311e1139e4590812

SHA1
7ae8250a4afd225dbc8420183116e8af1cf15cfe

SHA256
30000de63dd389b0aef61d01cdae2ed38f4bc0e03ca04e585780ca7b55b47662

SHA512
77fa1b7ff4dd4d96041b5b0f6df62b4cea39820163d12921af5fff5a959f26078441e6fd5652f7d4b72565a5fe4e217e869efd724d910d531d24637c5cb74ed8

Download Submit
memory/844-16-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/844-17-0x0000000010000000-0x00000000101B0000-memory.dmp

Filesize
1.7MB

Download
memory/844-34-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/1200-36-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/1200-55-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/1696-14-0x000000001A880000-0x000000001AA11000-memory.dmp

Filesize
1.6MB

Download
memory/1696-13-0x000000001A880000-0x000000001AA11000-memory.dmp

Filesize
1.6MB

Download
memory/1988-35-0x0000000001330000-0x00000000014C1000-memory.dmp

Filesize
1.6MB

Download
memory/1988-39-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads