gh0strat | bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c

General

Target
bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe
Size 3.3MB
Sample240602-mlfmnabc52
SHA256 bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c
MD5 761d1e733e792daf72c65bc1e5316045
SHA1 c67b708d4112ad1245fb41e65cf64a0af0e5cb58
SHA512 6288722441d26d52ad478d07d1a6e408dffd08ec1424d421e14ca040d5f02090ed2daa4de07f1c5d66d5cbe80a63e43bdb4c1e0329925c18094f8d10839e68cf
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNEI:QHPkVOBTKL
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan

Malware Config

Signatures

Detect PurpleFox Rootkit 3 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/3936-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/2360-11-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/1004-18-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 3 IoCs

resource	yara_rule
behavioral2/memory/3936-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/2360-11-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/1004-18-0x0000000010000000-0x000000001019F000-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	systeam.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"	systeam.exe

Executes dropped EXE 2 IoCs

pid	Process
2360	systeam.exe
1004	systeam.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\systeam.exe	bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe
File opened for modification	C:\Windows\SysWOW64\systeam.exe	bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.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	systeam.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	systeam.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	systeam.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2908	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1004	systeam.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	3936	bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe
Token: SeLoadDriverPrivilege	1004	systeam.exe
Token: 33	1004	systeam.exe
Token: SeIncBasePriorityPrivilege	1004	systeam.exe
Token: 33	1004	systeam.exe
Token: SeIncBasePriorityPrivilege	1004	systeam.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 4836	3936	bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe	85
PID 3936 wrote to memory of 4836	3936	bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe	85
PID 3936 wrote to memory of 4836	3936	bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe	85
PID 2360 wrote to memory of 1004	2360	systeam.exe	86
PID 2360 wrote to memory of 1004	2360	systeam.exe	86
PID 2360 wrote to memory of 1004	2360	systeam.exe	86
PID 4836 wrote to memory of 2908	4836	cmd.exe	88
PID 4836 wrote to memory of 2908	4836	cmd.exe	88
PID 4836 wrote to memory of 2908	4836	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe
"C:\Users\Admin\AppData\Local\Temp\bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3936
- 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\BEE726~1.EXE > nul
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4836
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 2 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2908

C:\Windows\SysWOW64\systeam.exe
C:\Windows\SysWOW64\systeam.exe -auto
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\systeam.exe
  C:\Windows\SysWOW64\systeam.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Modifies data under HKEY_USERS
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:1004

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

systeam.exe

Path C:\Windows\SysWOW64\systeam.exe
Size 3.3MB
SHA256 bee726ee33b3a8222ed67c991c5de535f8e90978ba253305c7d88e11fb05141c
MD5 761d1e733e792daf72c65bc1e5316045
SHA1 c67b708d4112ad1245fb41e65cf64a0af0e5cb58
SHA512 6288722441d26d52ad478d07d1a6e408dffd08ec1424d421e14ca040d5f02090ed2daa4de07f1c5d66d5cbe80a63e43bdb4c1e0329925c18094f8d10839e68cf
SSDEEP 24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNEI:QHPkVOBTKL
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1004-18-0x0000000010000000-0x000000001019F000-memory.dmp

Download

memory/2360-11-0x0000000010000000-0x000000001019F000-memory.dmp

Download

memory/3936-0-0x0000000010000000-0x000000001019F000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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