gh0strat | 37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3

General

Target

37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe
Size

631KB
MD5

41850422e4c7395319095a38924a4feb
SHA1

6a04170a1dcebc26ab237c711511eadbe7e43e75
SHA256

37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3
SHA512

0d9d8d8dcb42110bafc7eec8bfec217e3f16501079cfb6532096f46615aa7e113229e868a393406686b0e98eba7bf332e561be432f8387a703b46c87c23bb791
SSDEEP

12288:JbZNkv+bAtuJ/TCPdNA7ddldTiO65Ay3NAHDctZ0dwrbKn8X:J1ev+EtuZwdu7ddqHmy9EDct6Ge8X

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 5 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2528-24-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2568-20-0x0000000000400000-0x000000000057D000-memory.dmp	purplefox_rootkit
behavioral1/memory/1796-22-0x0000000000400000-0x000000000057D000-memory.dmp	purplefox_rootkit
behavioral1/memory/2568-2-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2528-40-0x0000000000400000-0x000000000057D000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral1/memory/2528-24-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2568-20-0x0000000000400000-0x000000000057D000-memory.dmp	family_gh0strat
behavioral1/memory/1796-22-0x0000000000400000-0x000000000057D000-memory.dmp	family_gh0strat
behavioral1/memory/2568-2-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2528-40-0x0000000000400000-0x000000000057D000-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	svhsot.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"	svhsot.exe

Deletes itself 1 IoCs

pid	Process
1980	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
1796	svhsot.exe
2528	svhsot.exe

Loads dropped DLL 1 IoCs

pid	Process
1796	svhsot.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\svhsot.exe	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe
File opened for modification	C:\Windows\SysWOW64\svhsot.exe	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2568-20-0x0000000000400000-0x000000000057D000-memory.dmp	upx
behavioral1/files/0x000c000000012262-23.dat	upx
behavioral1/memory/1796-22-0x0000000000400000-0x000000000057D000-memory.dmp	upx
behavioral1/memory/1796-10-0x0000000000400000-0x000000000057D000-memory.dmp	upx
behavioral1/memory/2568-0-0x0000000000400000-0x000000000057D000-memory.dmp	upx
behavioral1/memory/2528-40-0x0000000000400000-0x000000000057D000-memory.dmp	upx

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svhsot.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svhsot.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
2920	PING.EXE
1980	cmd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2920	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2528	svhsot.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2568	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe
Token: SeLoadDriverPrivilege	2528	svhsot.exe
Token: 33	2528	svhsot.exe
Token: SeIncBasePriorityPrivilege	2528	svhsot.exe
Token: 33	2528	svhsot.exe
Token: SeIncBasePriorityPrivilege	2528	svhsot.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 1980	2568	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe	31
PID 2568 wrote to memory of 1980	2568	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe	31
PID 2568 wrote to memory of 1980	2568	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe	31
PID 2568 wrote to memory of 1980	2568	37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe	31
PID 1796 wrote to memory of 2528	1796	svhsot.exe	32
PID 1796 wrote to memory of 2528	1796	svhsot.exe	32
PID 1796 wrote to memory of 2528	1796	svhsot.exe	32
PID 1796 wrote to memory of 2528	1796	svhsot.exe	32
PID 1980 wrote to memory of 2920	1980	cmd.exe	34
PID 1980 wrote to memory of 2920	1980	cmd.exe	34
PID 1980 wrote to memory of 2920	1980	cmd.exe	34
PID 1980 wrote to memory of 2920	1980	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe
"C:\Users\Admin\AppData\Local\Temp\37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2568
- 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\37B600~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1980
- - 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:2920

C:\Windows\SysWOW64\svhsot.exe
C:\Windows\SysWOW64\svhsot.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Windows\SysWOW64\svhsot.exe
  C:\Windows\SysWOW64\svhsot.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:2528

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\svhsot.exe

Filesize
631KB

MD5
41850422e4c7395319095a38924a4feb

SHA1
6a04170a1dcebc26ab237c711511eadbe7e43e75

SHA256
37b6002732a56eaa5782a94aedd6fbd6f5b2f404d4110f614f1b2d9d85b6b2f3

SHA512
0d9d8d8dcb42110bafc7eec8bfec217e3f16501079cfb6532096f46615aa7e113229e868a393406686b0e98eba7bf332e561be432f8387a703b46c87c23bb791

Download Submit
memory/1796-22-0x0000000000400000-0x000000000057D000-memory.dmp

Filesize
1.5MB

Download
memory/1796-10-0x0000000000400000-0x000000000057D000-memory.dmp

Filesize
1.5MB

Download
memory/2528-24-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2528-40-0x0000000000400000-0x000000000057D000-memory.dmp

Filesize
1.5MB

Download
memory/2568-20-0x0000000000400000-0x000000000057D000-memory.dmp

Filesize
1.5MB

Download
memory/2568-2-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2568-0-0x0000000000400000-0x000000000057D000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads