gh0strat | 41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53

General

Target

41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe
Size

736KB
MD5

2f8f7ae053c6bc790ec5c13b86eb1e3a
SHA1

6572ade871e91e54d44352f95ea40244e954e866
SHA256

41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53
SHA512

e48ed77f14bb01b7b4ba397f35c21ea5861a501177e5c1aed1ca949125f36decf13b44756ae8c55e5283a4bb3ca40257dbb1e2e788a5d02e594942edae0bcd71
SSDEEP

12288:Gi2cAro2HQVWAHkFSq2hAWJYlMUtrxlyuJVRe8yCt6YwSEP1p:Gi2Tro2H2HESq2eWJ6MQjySjyCtVwZp

Score

10^/10

gh0strat purplefox discovery persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 9 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral1/memory/2828-15-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2828-10-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2828-11-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2648-21-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2648-29-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2620-30-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2620-31-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2620-35-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit
behavioral1/memory/2620-36-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 9 IoCs

resource	yara_rule
behavioral1/memory/2828-15-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2828-10-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2828-11-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2648-21-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2648-29-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2620-30-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2620-31-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2620-35-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat
behavioral1/memory/2620-36-0x0000000010000000-0x00000000101B6000-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
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	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 3 IoCs

pid	Process
2828	RVN.exe
2648	TXPlatforn.exe
2620	TXPlatforn.exe

Loads dropped DLL 2 IoCs

pid	Process
2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe
2648	TXPlatforn.exe

Drops file in System32 directory 2 IoCs

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

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2828-8-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2828-15-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2828-10-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2828-11-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2648-21-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2648-29-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2620-30-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2620-31-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2620-35-0x0000000010000000-0x00000000101B6000-memory.dmp	upx
behavioral1/memory/2620-36-0x0000000010000000-0x00000000101B6000-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	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RVN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TXPlatforn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
2676	cmd.exe
380	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
380	PING.EXE

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2620	TXPlatforn.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2828	RVN.exe
Token: SeLoadDriverPrivilege	2620	TXPlatforn.exe
Token: 33	2620	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	2620	TXPlatforn.exe
Token: 33	2620	TXPlatforn.exe
Token: SeIncBasePriorityPrivilege	2620	TXPlatforn.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2888 wrote to memory of 2828	2888	41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe	30
PID 2828 wrote to memory of 2676	2828	RVN.exe	32
PID 2828 wrote to memory of 2676	2828	RVN.exe	32
PID 2828 wrote to memory of 2676	2828	RVN.exe	32
PID 2828 wrote to memory of 2676	2828	RVN.exe	32
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2648 wrote to memory of 2620	2648	TXPlatforn.exe	33
PID 2676 wrote to memory of 380	2676	cmd.exe	35
PID 2676 wrote to memory of 380	2676	cmd.exe	35
PID 2676 wrote to memory of 380	2676	cmd.exe	35
PID 2676 wrote to memory of 380	2676	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe
"C:\Users\Admin\AppData\Local\Temp\41a9b05b5ad76c82220e55b8b07adbbe7876aaa5b4ce0a74f644d34d4f853f53.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2888
- 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:2828
- - 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:2676
  - - 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:380

C:\Windows\SysWOW64\TXPlatforn.exe
C:\Windows\SysWOW64\TXPlatforn.exe -auto
1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2648
- 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:2620

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:\Users\Admin\Desktop\InitializeDismount.exe

Filesize
977KB

MD5
a92ea5e0b50394f6048c4de5be0815ca

SHA1
cda5dde133710c536c107902843e95bcf9194dea

SHA256
0c905e3080131f22ad7fa3db4b15ab99b1c38419ab9e3ada9cfef6ef4001d998

SHA512
338d1f36069ed3d8e2ed2fa64629554adae1e3899d22c3730331bd8c3c22f81575597c138fbff0c8f5d992467be0ac8934e0b5be4efc1c4bac947ed3a7b4e9c1

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

Filesize
377KB

MD5
80ade1893dec9cab7f2e63538a464fcc

SHA1
c06614da33a65eddb506db00a124a3fc3f5be02e

SHA256
57a920389c044e3f5cf93dabff67070b4511e79779b6f874e08f92d8b0d7afbd

SHA512
fffd4f3fccb5301b3c7a5b3bd92747f31549fbd9d0803fe5d502d1bb0ef979140988718c2ee1406ed3e755790d275185e120a56cbcb5ed2eadf62b5cdbfc4cc4

Download Submit
memory/2620-30-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2620-31-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2620-35-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2620-36-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2648-21-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2648-29-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2828-8-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2828-15-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2828-10-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download
memory/2828-11-0x0000000010000000-0x00000000101B6000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads