purplefox | 170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68

Analysis

max time kernel
92s
max time network
97s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-09-2024 20:29

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Reason

Machine shutdown

Report Analysis Logs

General

Target

170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe
Size

4.0MB
MD5

9795f2e7a7c23cd7eb536ad28d923958
SHA1

79156a866315b5cd3203898795ce0d54e8e65d29
SHA256

170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68
SHA512

14b8987585bd2ef08a2d86b5c4a49ad811392740a4b95b061fea42931d34a483f59f94cf10cd0cd9d0af9e3a7a5d219d40fdfddad5875087ce853a92539dc5eb
SSDEEP

98304:g0CaH1REzZi1U+EKo2DqbigoxEspdJipIddobqWQ:NIBQubYxFU8d5W

Score

10^/10

purplefox discovery persistence rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 7 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/1536-77-0x0000000010000000-0x00000000101B0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2364-86-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit
behavioral1/memory/1536-96-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit
behavioral1/memory/2364-100-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit
behavioral1/memory/2812-102-0x0000000010000000-0x00000000101B0000-memory.dmp	purplefox_rootkit
behavioral1/memory/2812-131-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit
behavioral1/memory/2064-205-0x0000000000400000-0x0000000000591000-memory.dmp	purplefox_rootkit

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

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe.lnk	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe

Executes dropped EXE 4 IoCs

pid	Process
1536	conhost.exe
2364	conhost.exe
2812	conhost.exe
2064	conhost.exe

Loads dropped DLL 1 IoCs

pid	Process
1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe

UPX packed file 34 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1628-4-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-5-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-9-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-7-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-6-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-14-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-39-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-45-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-48-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-43-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-41-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-37-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-35-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-33-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-31-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-30-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-27-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-25-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-23-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-21-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-19-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-17-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-15-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1628-11-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/files/0x0009000000016f97-71.dat	upx
behavioral1/memory/1536-76-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/2364-86-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/1628-85-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral1/memory/1536-96-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/2812-101-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/2364-100-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/2812-131-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/2064-188-0x0000000000400000-0x0000000000591000-memory.dmp	upx
behavioral1/memory/2064-205-0x0000000000400000-0x0000000000591000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\conhost.exe	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe
File opened for modification	C:\Windows\conhost.exe	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe
File opened for modification	C:\Windows\conhost.exe	conhost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.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
2036	cmd.exe
1428	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1428	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2812	conhost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1536	conhost.exe
Token: SeLoadDriverPrivilege	2812	conhost.exe
Token: 33	2812	conhost.exe
Token: SeIncBasePriorityPrivilege	2812	conhost.exe
Token: SeShutdownPrivilege	1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe
1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe
1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 1536	1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe	31
PID 1628 wrote to memory of 1536	1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe	31
PID 1628 wrote to memory of 1536	1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe	31
PID 1628 wrote to memory of 1536	1628	170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe	31
PID 1536 wrote to memory of 2036	1536	conhost.exe	33
PID 1536 wrote to memory of 2036	1536	conhost.exe	33
PID 1536 wrote to memory of 2036	1536	conhost.exe	33
PID 1536 wrote to memory of 2036	1536	conhost.exe	33
PID 2364 wrote to memory of 2812	2364	conhost.exe	35
PID 2364 wrote to memory of 2812	2364	conhost.exe	35
PID 2364 wrote to memory of 2812	2364	conhost.exe	35
PID 2364 wrote to memory of 2812	2364	conhost.exe	35
PID 2036 wrote to memory of 1428	2036	cmd.exe	36
PID 2036 wrote to memory of 1428	2036	cmd.exe	36
PID 2036 wrote to memory of 1428	2036	cmd.exe	36
PID 2036 wrote to memory of 1428	2036	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe
"C:\Users\Admin\AppData\Local\Temp\170aa120564d75738a84d5ad050a93b3cf02af9bf8f06520f180ea8185a2be68.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1628
- 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:1536
- - 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:2036
  - - 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:1428

C:\Windows\conhost.exe
C:\Windows\conhost.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2364
- 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:2812

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2848

C:\Windows\conhost.exe
C:\Windows\conhost.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2064

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\conhost.exe

Filesize
652KB

MD5
4f883e7d4d89a581845bc451d7f7a90c

SHA1
15dd39b9401b946330288a147437af3d9722bdf1

SHA256
7c36b489a2fe329398415fd58a73c3b61f8127d4a4ebb002a64d604cfe2d7387

SHA512
56e54e4e03f783fddad2b61ace38f7adfec5bcc0f591aeb9004c82eb674daaafc584037f057123789bafbfedc914d01a7d92af685b2239b232668a3ef2e1f61f

Download Submit
\Users\Admin\AppData\Local\Temp\HPSocket4C.dll

Filesize
2.1MB

MD5
04869ada712c189caba4822be0e81ea5

SHA1
9c45486b30e6d3ccf0737c5766796baaf58232ab

SHA256
23078015adb0cf53ebf632a895a1a224b3718174e6c2887e1bbb2d28be5e2b8b

SHA512
16f98af15583c60da0cb947ea2230f759bfa27f86ef93ef5f7ffe2adcec6c5f115f52ffa74bae6cf8add94bb6a380fa276f391619256be7a45c53bb7421fdd9c

Download Submit
memory/1536-96-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/1536-77-0x0000000010000000-0x00000000101B0000-memory.dmp

Filesize
1.7MB

Download
memory/1536-76-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/1628-58-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-43-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-45-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-48-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-59-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-41-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-37-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-35-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-33-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-53-0x0000000000330000-0x000000000034A000-memory.dmp

Filesize
104KB

Download
memory/1628-52-0x0000000077261000-0x0000000077262000-memory.dmp

Filesize
4KB

Download
memory/1628-54-0x000000007726C000-0x000000007726D000-memory.dmp

Filesize
4KB

Download
memory/1628-51-0x0000000077253000-0x0000000077254000-memory.dmp

Filesize
4KB

Download
memory/1628-50-0x000000007724D000-0x000000007724E000-memory.dmp

Filesize
4KB

Download
memory/1628-49-0x000000007724E000-0x000000007724F000-memory.dmp

Filesize
4KB

Download
memory/1628-31-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-30-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-27-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-25-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-23-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-21-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-56-0x0000000000408000-0x0000000000409000-memory.dmp

Filesize
4KB

Download
memory/1628-19-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-17-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-15-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-11-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-57-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-4-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-202-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-39-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-61-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-14-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-6-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-75-0x000000001C800000-0x000000001C991000-memory.dmp

Filesize
1.6MB

Download
memory/1628-7-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-74-0x000000001C800000-0x000000001C991000-memory.dmp

Filesize
1.6MB

Download
memory/1628-9-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-203-0x0000000000330000-0x000000000034A000-memory.dmp

Filesize
104KB

Download
memory/1628-85-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-5-0x0000000010000000-0x000000001003E000-memory.dmp

Filesize
248KB

Download
memory/1628-60-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-128-0x000000001C800000-0x000000001C991000-memory.dmp

Filesize
1.6MB

Download
memory/1628-127-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-126-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-122-0x0000000000330000-0x000000000034A000-memory.dmp

Filesize
104KB

Download
memory/1628-121-0x0000000077261000-0x0000000077262000-memory.dmp

Filesize
4KB

Download
memory/1628-120-0x0000000077253000-0x0000000077254000-memory.dmp

Filesize
4KB

Download
memory/1628-119-0x000000007724D000-0x000000007724E000-memory.dmp

Filesize
4KB

Download
memory/1628-118-0x000000007724E000-0x000000007724F000-memory.dmp

Filesize
4KB

Download
memory/1628-123-0x000000007726C000-0x000000007726D000-memory.dmp

Filesize
4KB

Download
memory/1628-124-0x0000000000400000-0x0000000000837000-memory.dmp

Filesize
4.2MB

Download
memory/1628-125-0x0000000000408000-0x0000000000409000-memory.dmp

Filesize
4KB

Download
memory/2064-188-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/2064-205-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/2364-100-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/2364-98-0x00000000011E0000-0x0000000001371000-memory.dmp

Filesize
1.6MB

Download
memory/2364-86-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/2812-102-0x0000000010000000-0x00000000101B0000-memory.dmp

Filesize
1.7MB

Download
memory/2812-101-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download
memory/2812-131-0x0000000000400000-0x0000000000591000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads