gh0strat | 302c010ea9f48aa392bae566a6ca71376934dfd0405c81d6e897cf4b41254b6b

General

Target

HEUR-Backdoor.Win32.exe
Size

30.5MB
MD5

4f5c45902bd6d683fde339608c73fa45
SHA1

d2a36781383d2a1e7e5dfa20db8b7214c210ba7e
SHA256

302c010ea9f48aa392bae566a6ca71376934dfd0405c81d6e897cf4b41254b6b
SHA512

bf9f17b80772dfe6a44f9ce1f9e834d3ed5d485f5f77d3b315c39c6344686e4fb842d3041225d3ef8a632aae3f52017763556f743e45e99c8a52a411f7ce4e42
SSDEEP

6144:7Iqlnp3Us0ASuxNOug5MI3KBau3EO8iZrEXA2czL6mWzdoZtAznpGuGEwJvfJ0sS:7jLUsEux9g5F6U2WOWczLygAzN6fJg

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 6 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral4/memory/2024-3-0x0000000010000000-0x00000000101BA000-memory.dmp	purplefox_rootkit
behavioral4/memory/2024-2-0x0000000010000000-0x00000000101BA000-memory.dmp	purplefox_rootkit
behavioral4/memory/2024-4-0x0000000010000000-0x00000000101BA000-memory.dmp	purplefox_rootkit
behavioral4/memory/3548-21-0x0000000010000000-0x00000000101BA000-memory.dmp	purplefox_rootkit
behavioral4/memory/3548-22-0x0000000010000000-0x00000000101BA000-memory.dmp	purplefox_rootkit
behavioral4/memory/3548-26-0x0000000010000000-0x00000000101BA000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral4/memory/2024-3-0x0000000010000000-0x00000000101BA000-memory.dmp	family_gh0strat
behavioral4/memory/2024-2-0x0000000010000000-0x00000000101BA000-memory.dmp	family_gh0strat
behavioral4/memory/2024-4-0x0000000010000000-0x00000000101BA000-memory.dmp	family_gh0strat
behavioral4/memory/3548-21-0x0000000010000000-0x00000000101BA000-memory.dmp	family_gh0strat
behavioral4/memory/3548-22-0x0000000010000000-0x00000000101BA000-memory.dmp	family_gh0strat
behavioral4/memory/3548-26-0x0000000010000000-0x00000000101BA000-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
Gh0strat family
gh0strat
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	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 1 IoCs

pid	Process
3548	Vnfvn.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral4/memory/2024-3-0x0000000010000000-0x00000000101BA000-memory.dmp	upx
behavioral4/memory/2024-2-0x0000000010000000-0x00000000101BA000-memory.dmp	upx
behavioral4/memory/2024-0-0x0000000010000000-0x00000000101BA000-memory.dmp	upx
behavioral4/memory/2024-4-0x0000000010000000-0x00000000101BA000-memory.dmp	upx
behavioral4/memory/3548-21-0x0000000010000000-0x00000000101BA000-memory.dmp	upx
behavioral4/memory/3548-22-0x0000000010000000-0x00000000101BA000-memory.dmp	upx
behavioral4/memory/3548-26-0x0000000010000000-0x00000000101BA000-memory.dmp	upx

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 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HEUR-Backdoor.Win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vnfvn.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
2516	PING.EXE
1724	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2516	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3548	Vnfvn.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2024	HEUR-Backdoor.Win32.exe
Token: SeLoadDriverPrivilege	3548	Vnfvn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2024	HEUR-Backdoor.Win32.exe
3548	Vnfvn.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 3548	2024	HEUR-Backdoor.Win32.exe	77
PID 2024 wrote to memory of 3548	2024	HEUR-Backdoor.Win32.exe	77
PID 2024 wrote to memory of 3548	2024	HEUR-Backdoor.Win32.exe	77
PID 2024 wrote to memory of 1724	2024	HEUR-Backdoor.Win32.exe	78
PID 2024 wrote to memory of 1724	2024	HEUR-Backdoor.Win32.exe	78
PID 2024 wrote to memory of 1724	2024	HEUR-Backdoor.Win32.exe	78
PID 1724 wrote to memory of 2516	1724	cmd.exe	80
PID 1724 wrote to memory of 2516	1724	cmd.exe	80
PID 1724 wrote to memory of 2516	1724	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.Win32.exe
"C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.Win32.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2024
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Vnfvn.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Vnfvn.exe"
  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
  - Suspicious use of SetWindowsHookEx
  PID:3548
- 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\HEUR-B~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1724
- - 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:2516

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 Information Discovery

1

T1082

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:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Vnfvn.exe

Filesize
30.5MB

MD5
4f5c45902bd6d683fde339608c73fa45

SHA1
d2a36781383d2a1e7e5dfa20db8b7214c210ba7e

SHA256
302c010ea9f48aa392bae566a6ca71376934dfd0405c81d6e897cf4b41254b6b

SHA512
bf9f17b80772dfe6a44f9ce1f9e834d3ed5d485f5f77d3b315c39c6344686e4fb842d3041225d3ef8a632aae3f52017763556f743e45e99c8a52a411f7ce4e42

Download Submit
memory/2024-3-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download
memory/2024-2-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download
memory/2024-0-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download
memory/2024-4-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download
memory/3548-21-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download
memory/3548-22-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download
memory/3548-26-0x0000000010000000-0x00000000101BA000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads