gh0strat | d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430

General

Target

d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe
Size

1.3MB
MD5

639660c2933d24cebb0e3aee44970fdb
SHA1

4501d2307729fe6b16fd8e240ac3e9ee5ce947f3
SHA256

d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430
SHA512

d099122f0b469c2da812775683a36481a46daa07b7557f95f252b2e114449fb39662f355d984ef9657ea7b69f00a9eef9403922679a992cc138ff292598654ee
SSDEEP

24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNH:QHPkVOBTK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/4152-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1656-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1612-17-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/4152-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1656-10-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1612-17-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat

Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat
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	Vnfvn.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"	Vnfvn.exe

Executes dropped EXE 2 IoCs

pid	Process
1656	Vnfvn.exe
1612	Vnfvn.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Vnfvn.exe	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe
File opened for modification	C:\Windows\SysWOW64\Vnfvn.exe	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vnfvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vnfvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
1508	cmd.exe
4360	PING.EXE

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Vnfvn.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Vnfvn.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Vnfvn.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4360	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1612	Vnfvn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4152	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe
Token: SeLoadDriverPrivilege	1612	Vnfvn.exe
Token: 33	1612	Vnfvn.exe
Token: SeIncBasePriorityPrivilege	1612	Vnfvn.exe
Token: 33	1612	Vnfvn.exe
Token: SeIncBasePriorityPrivilege	1612	Vnfvn.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 1508	4152	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe	86
PID 4152 wrote to memory of 1508	4152	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe	86
PID 4152 wrote to memory of 1508	4152	d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe	86
PID 1656 wrote to memory of 1612	1656	Vnfvn.exe	88
PID 1656 wrote to memory of 1612	1656	Vnfvn.exe	88
PID 1656 wrote to memory of 1612	1656	Vnfvn.exe	88
PID 1508 wrote to memory of 4360	1508	cmd.exe	89
PID 1508 wrote to memory of 4360	1508	cmd.exe	89
PID 1508 wrote to memory of 4360	1508	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe
"C:\Users\Admin\AppData\Local\Temp\d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4152
- 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\D4CBFD~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1508
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4360

C:\Windows\SysWOW64\Vnfvn.exe
C:\Windows\SysWOW64\Vnfvn.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Windows\SysWOW64\Vnfvn.exe
  C:\Windows\SysWOW64\Vnfvn.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:1612

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

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Downloads

C:\Windows\SysWOW64\Vnfvn.exe

Filesize
1.3MB

MD5
639660c2933d24cebb0e3aee44970fdb

SHA1
4501d2307729fe6b16fd8e240ac3e9ee5ce947f3

SHA256
d4cbfd739e587f5a0a19a7c1b81679cb339154cd734c30c9e1067819db9e3430

SHA512
d099122f0b469c2da812775683a36481a46daa07b7557f95f252b2e114449fb39662f355d984ef9657ea7b69f00a9eef9403922679a992cc138ff292598654ee

Download Submit
memory/1612-17-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/1656-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4152-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads