gh0strat | 21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462

General

Target

21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe
Size

1.3MB
MD5

9d85fa809465eb500a2f569979190a04
SHA1

d47d9af2fc686debcf3628ecf8168661ed36e44d
SHA256

21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462
SHA512

fd0b8bec62c5ccb3e3a87e1d33b32cb65122cb2d982a4f945cbfda29246ddaa68ce99a2206c8148ff4f23abefabf82379e2c92b8da12480bc4c016de789aba15
SSDEEP

24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNO: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/2540-0-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral2/memory/2704-10-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

resource	yara_rule
behavioral2/memory/2540-0-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral2/memory/2704-10-0x0000000010000000-0x000000001019F000-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	sainbox.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"	sainbox.exe

Executes dropped EXE 2 IoCs

pid	Process
2704	sainbox.exe
4540	sainbox.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\sainbox.exe	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe
File opened for modification	C:\Windows\SysWOW64\sainbox.exe	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sainbox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sainbox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2352	cmd.exe
404	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	sainbox.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	sainbox.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	sainbox.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
404	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
4540	sainbox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2540	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe
Token: SeLoadDriverPrivilege	4540	sainbox.exe
Token: 33	4540	sainbox.exe
Token: SeIncBasePriorityPrivilege	4540	sainbox.exe
Token: 33	4540	sainbox.exe
Token: SeIncBasePriorityPrivilege	4540	sainbox.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2352	2540	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe	88
PID 2540 wrote to memory of 2352	2540	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe	88
PID 2540 wrote to memory of 2352	2540	21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe	88
PID 2704 wrote to memory of 4540	2704	sainbox.exe	89
PID 2704 wrote to memory of 4540	2704	sainbox.exe	89
PID 2704 wrote to memory of 4540	2704	sainbox.exe	89
PID 2352 wrote to memory of 404	2352	cmd.exe	91
PID 2352 wrote to memory of 404	2352	cmd.exe	91
PID 2352 wrote to memory of 404	2352	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe
"C:\Users\Admin\AppData\Local\Temp\21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540
- 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\21AB12~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2352
- - 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:404

C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Windows\SysWOW64\sainbox.exe
  C:\Windows\SysWOW64\sainbox.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:4540

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\sainbox.exe

Filesize
1.3MB

MD5
9d85fa809465eb500a2f569979190a04

SHA1
d47d9af2fc686debcf3628ecf8168661ed36e44d

SHA256
21ab12b7e4df273b0f01ce79af674b43eca1f44d10c8a01341ff2dc9dbb7f462

SHA512
fd0b8bec62c5ccb3e3a87e1d33b32cb65122cb2d982a4f945cbfda29246ddaa68ce99a2206c8148ff4f23abefabf82379e2c92b8da12480bc4c016de789aba15

Download Submit
memory/2540-0-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/2704-10-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads