gh0strat | fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4

General

Target

fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe
Size

611KB
MD5

d04567f489761bd23e5d7993828826d3
SHA1

29cf17aa20e16625fca6583820cf666cac384ddd
SHA256

fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4
SHA512

db4cf56d5088f9155bef17d6e54fbf13564b8db7dde7f043d5d5a1ae1ed77bf7cca7ef3e311fdd2bd3bae3465b1ce035e97c9a772b99c373ca9b806ca37e1ebe
SSDEEP

12288:FFpuzZSkcBNrl5mTEUkDaSdJfpSaoNRVBUyMCe8VMM80B7qrI3iK1XBwZQO:FFmShDrngEUkDaiJfpSaoNRpMCe8CM8T

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/316-1-0x0000000010000000-0x000000001019F000-memory.dmp	purplefox_rootkit
behavioral1/memory/2540-21-0x0000000001110000-0x0000000001295000-memory.dmp	purplefox_rootkit
behavioral1/memory/316-20-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral1/memory/2540-30-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit
behavioral1/memory/2340-40-0x0000000000400000-0x0000000000585000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 5 IoCs

resource	yara_rule
behavioral1/memory/316-1-0x0000000010000000-0x000000001019F000-memory.dmp	family_gh0strat
behavioral1/memory/2540-21-0x0000000001110000-0x0000000001295000-memory.dmp	family_gh0strat
behavioral1/memory/316-20-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral1/memory/2540-30-0x0000000000400000-0x0000000000585000-memory.dmp	family_gh0strat
behavioral1/memory/2340-40-0x0000000000400000-0x0000000000585000-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

Deletes itself 1 IoCs

pid	Process
2688	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2540	sainbox.exe
2340	sainbox.exe

Loads dropped DLL 1 IoCs

pid	Process
2540	sainbox.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\sainbox.exe	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe
File created	C:\Windows\SysWOW64\sainbox.exe	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/316-0-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/files/0x00080000000120f9-9.dat	upx
behavioral1/memory/2540-10-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/memory/316-20-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/memory/2540-30-0x0000000000400000-0x0000000000585000-memory.dmp	upx
behavioral1/memory/2340-40-0x0000000000400000-0x0000000000585000-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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.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
2688	cmd.exe
2632	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2632	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2340	sainbox.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	316	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe
Token: SeLoadDriverPrivilege	2340	sainbox.exe
Token: 33	2340	sainbox.exe
Token: SeIncBasePriorityPrivilege	2340	sainbox.exe
Token: 33	2340	sainbox.exe
Token: SeIncBasePriorityPrivilege	2340	sainbox.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 2688	316	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe	31
PID 316 wrote to memory of 2688	316	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe	31
PID 316 wrote to memory of 2688	316	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe	31
PID 316 wrote to memory of 2688	316	fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe	31
PID 2540 wrote to memory of 2340	2540	sainbox.exe	32
PID 2540 wrote to memory of 2340	2540	sainbox.exe	32
PID 2540 wrote to memory of 2340	2540	sainbox.exe	32
PID 2540 wrote to memory of 2340	2540	sainbox.exe	32
PID 2688 wrote to memory of 2632	2688	cmd.exe	34
PID 2688 wrote to memory of 2632	2688	cmd.exe	34
PID 2688 wrote to memory of 2632	2688	cmd.exe	34
PID 2688 wrote to memory of 2632	2688	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe
"C:\Users\Admin\AppData\Local\Temp\fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:316
- 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\FC70F9~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2688
- - 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:2632

C:\Windows\SysWOW64\sainbox.exe
C:\Windows\SysWOW64\sainbox.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2540
- 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
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:2340

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
611KB

MD5
d04567f489761bd23e5d7993828826d3

SHA1
29cf17aa20e16625fca6583820cf666cac384ddd

SHA256
fc70f910455b36262ac9957dfc9d1dc99146bb700a7432fef2718d88a1d0daf4

SHA512
db4cf56d5088f9155bef17d6e54fbf13564b8db7dde7f043d5d5a1ae1ed77bf7cca7ef3e311fdd2bd3bae3465b1ce035e97c9a772b99c373ca9b806ca37e1ebe

Download Submit
memory/316-0-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/316-1-0x0000000010000000-0x000000001019F000-memory.dmp

Filesize
1.6MB

Download
memory/316-20-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2340-40-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2540-10-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download
memory/2540-21-0x0000000001110000-0x0000000001295000-memory.dmp

Filesize
1.5MB

Download
memory/2540-30-0x0000000000400000-0x0000000000585000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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