gh0strat | a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a

General

Target

a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe
Size

1.3MB
MD5

b6ca6ebb44b45b48827bd8261132770f
SHA1

b91eca931393a56e137ae4d5bf650382bc23ee1f
SHA256

a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a
SHA512

7f5b742624ec59cf6549be5435b101d3e1d770783bfde07c2a0a23ae06545c92881567296144624d4f320ce73bbfe5107f886377d2cd3016e9f7011445b843d0
SSDEEP

24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNq:QHPkVOBTK

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 2 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/1428-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/4348-11-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/memory/1428-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/4348-11-0x0000000010000000-0x000000001019F000-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
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	763

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"	763

Executes dropped EXE 2 IoCs

pid	Process
4348	763
2496	763

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\AppPatch\763	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe
File opened for modification	C:\Program Files (x86)\AppPatch\763	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.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	763
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	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	763

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
1540	cmd.exe
1680	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	763
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	763
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	763

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1680	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2496	763

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1428	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe
Token: SeLoadDriverPrivilege	2496	763
Token: 33	2496	763
Token: SeIncBasePriorityPrivilege	2496	763
Token: 33	2496	763
Token: SeIncBasePriorityPrivilege	2496	763

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 1540	1428	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe	84
PID 1428 wrote to memory of 1540	1428	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe	84
PID 1428 wrote to memory of 1540	1428	a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe	84
PID 4348 wrote to memory of 2496	4348	763	86
PID 4348 wrote to memory of 2496	4348	763	86
PID 4348 wrote to memory of 2496	4348	763	86
PID 1540 wrote to memory of 1680	1540	cmd.exe	87
PID 1540 wrote to memory of 1680	1540	cmd.exe	87
PID 1540 wrote to memory of 1680	1540	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe
"C:\Users\Admin\AppData\Local\Temp\a9d66660b4b27ac6a1d5bed4bba9649686f54b0405a0105ee5c1fb1f5c477c0a.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1428
- 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\A9D666~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1540
- - 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:1680

C:\Program Files (x86)\AppPatch\763
"C:\Program Files (x86)\AppPatch\763" -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Program Files (x86)\AppPatch\763
  "C:\Program Files (x86)\AppPatch\763" -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:2496

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

memory/1428-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/4348-11-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads