gh0strat | 55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea

General

Target

55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
Size

1.7MB
MD5

85537b02c115fbe3a20477c234b2069e
SHA1

305a0bd22027504d49dd9e0cbb8976597a8a0815
SHA256

55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea
SHA512

6f5d2e96aef236999a8f8d717439c34e217e3bc52a84d3fd42354916e5d2a5acab4afac08c224cd08ba546ce9162975aa1eab08e3e2c0559bbe5cc4cad8b4cde
SSDEEP

24576:009tv9/7JtDElDEExIko2H2HESq2eWJ6MQjySjy+Y5/mdD07mZn:009XJt4HIN2H2tFvduySC5/mkm

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 11 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/688-7-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/688-11-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/688-8-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4164-16-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4164-17-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/5060-30-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4164-29-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/5060-32-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/5060-34-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/4164-18-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral2/memory/5060-37-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 11 IoCs

resource	yara_rule
behavioral2/memory/688-7-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/688-11-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/688-8-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4164-16-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4164-17-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/5060-30-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4164-29-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/5060-32-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/5060-34-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/4164-18-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral2/memory/5060-37-0x0000000010000000-0x00000000101B6000-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	TXPlatforn.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"	TXPlatforn.exe

Executes dropped EXE 4 IoCs

pid	Process
688	RVN.exe
4164	TXPlatforn.exe
5060	TXPlatforn.exe
4380	HD_55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\TXPlatforn.exe	RVN.exe
File created	C:\Windows\SysWOW64\TXPlatforn.exe	RVN.exe

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/688-7-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/688-11-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/688-6-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/688-8-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4164-14-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4164-16-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4164-17-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5060-30-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4164-29-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5060-32-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5060-34-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/4164-18-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral2/memory/5060-37-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
File created	C:\Program Files (x86)\Google\Chrome\Application\chrome.exe	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4504	4380	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 6 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	HD_55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
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	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RVN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TXPlatforn.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
3476	cmd.exe
1840	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1840	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
5060	TXPlatforn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	688	RVN.exe
Token: SeLoadDriverPrivilege	5060	TXPlatforn.exe
Token: 33	5060	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	5060	TXPlatforn.exe
Token: 33	5060	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	5060	TXPlatforn.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 688	1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe	82
PID 1928 wrote to memory of 688	1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe	82
PID 1928 wrote to memory of 688	1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe	82
PID 688 wrote to memory of 3476	688	RVN.exe	84
PID 688 wrote to memory of 3476	688	RVN.exe	84
PID 688 wrote to memory of 3476	688	RVN.exe	84
PID 4164 wrote to memory of 5060	4164	TXPlatforn.exe	85
PID 4164 wrote to memory of 5060	4164	TXPlatforn.exe	85
PID 4164 wrote to memory of 5060	4164	TXPlatforn.exe	85
PID 1928 wrote to memory of 4380	1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe	86
PID 1928 wrote to memory of 4380	1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe	86
PID 1928 wrote to memory of 4380	1928	55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe	86
PID 3476 wrote to memory of 1840	3476	cmd.exe	88
PID 3476 wrote to memory of 1840	3476	cmd.exe	88
PID 3476 wrote to memory of 1840	3476	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
"C:\Users\Admin\AppData\Local\Temp\55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Users\Admin\AppData\Local\Temp\RVN.exe
  C:\Users\Admin\AppData\Local\Temp\\RVN.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:688
- - 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\RVN.exe > nul
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:3476
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 2 127.0.0.1
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1840
- C:\Users\Admin\AppData\Local\Temp\HD_55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
  C:\Users\Admin\AppData\Local\Temp\HD_55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4380
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 804
    3⤵
    - Program crash
    PID:4504

C:\Windows\SysWOW64\TXPlatforn.exe
C:\Windows\SysWOW64\TXPlatforn.exe -auto
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4164
- C:\Windows\SysWOW64\TXPlatforn.exe
  C:\Windows\SysWOW64\TXPlatforn.exe -acsi
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4380 -ip 4380
1⤵
PID:2956

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 Information Discovery

1

T1082

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:\Users\Admin\AppData\Local\Temp\HD_55bb20dbbfe9bf4c159a2995a3caf19f28c2a29b5c54871d4451018b622875ea.exe

Filesize
328KB

MD5
0e6aca7bfea61f86e95dffd8ea267b6b

SHA1
fca379c85ccbd2f1ebd9158f0f093472fb913a25

SHA256
e93209abc897a1184585f90def4f73cc92273e44cf96392903baac5347aa49e6

SHA512
ac8e3a4315dbc9abc1a8719a1457565813f36d3c6ca146b0eed8553f17c7e4d45533abb68d3df973c75fc5ea836aab486b896f9d0bb39cca370702c88cd4b39d

Download Submit
C:\Users\Admin\AppData\Local\Temp\HD_X.dat

Filesize
1.4MB

MD5
ef6dffedd58a91c6d771329b59750eae

SHA1
fd40b7f036321fa8c33292be7fdaa61fdad4c90d

SHA256
ddd6d1fa5f65a430320d7782cc6234ae13b5c16df39bcade8055e4da88b43640

SHA512
a710138c50380d533c1510e71aabf9216bada60a018ff5b7165b3ea9e3b4631c7c703fc103a177012aac1cd8d549ee07b70fc881eefafdb06fc17e2164963614

Download Submit
C:\Users\Admin\AppData\Local\Temp\RVN.exe

Filesize
377KB

MD5
80ade1893dec9cab7f2e63538a464fcc

SHA1
c06614da33a65eddb506db00a124a3fc3f5be02e

SHA256
57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd

SHA512
fffd4f3fccb5301b3c7a5b3bd92747f31549fbd9d0803fe5d502d1bb0ef979140988718c2ee1406ed3e755790d275185e120a56cbcb5ed2eadf62b5cdbfc4cc4

Download Submit
memory/688-7-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/688-11-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/688-6-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/688-8-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/1928-100-0x0000000000400000-0x0000000000580000-memory.dmp

Filesize
1.5MB

Download
memory/1928-0-0x0000000000400000-0x0000000000580000-memory.dmp

Filesize
1.5MB

Download
memory/4164-18-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4164-29-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4164-17-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4164-16-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4164-14-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/4380-31-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/4380-38-0x0000000000100000-0x0000000000156000-memory.dmp

Filesize
344KB

Download
memory/5060-30-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/5060-32-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/5060-34-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/5060-37-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads