gh0strat | 5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f

General

Target

5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe
Size

206KB
MD5

6a949abda0492d3f4692adfd6a29795c
SHA1

3b9f6e32243d7a81c859b9c8dfc3ebc124d9979f
SHA256

5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f
SHA512

bb83fcabe7063d40d1b0284f8ddbb951a45e024fa15b930d0688d74ce227909a6abffd50f1b1e2266c09008cc1d21b5cb93bdd0f7c7a5d8254d87fa8d6b24cc9
SSDEEP

3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTF:X2vnSwjaOcADw9cUeCOf

Score

10^/10

gh0strat bootkit discovery persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

C2

107.163.241.193:6520

http://107.163.241.181:16300/

http://107.163.241.182:12354/login.php

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

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

Deletes itself 1 IoCs

pid	Process
4560	ltrfq.exe

Executes dropped EXE 2 IoCs

pid	Process
4560	ltrfq.exe
4648	avwytx.exe

Loads dropped DLL 1 IoCs

pid	Process
4648	avwytx.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\bkqypxvb\\avwytx.exe \"c:\\Program Files\\bkqypxvb\\avwytx.dll\",Compliance"	avwytx.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\t:	avwytx.exe
File opened (read-only)	\??\e:	avwytx.exe
File opened (read-only)	\??\o:	avwytx.exe
File opened (read-only)	\??\q:	avwytx.exe
File opened (read-only)	\??\r:	avwytx.exe
File opened (read-only)	\??\v:	avwytx.exe
File opened (read-only)	\??\x:	avwytx.exe
File opened (read-only)	\??\b:	avwytx.exe
File opened (read-only)	\??\g:	avwytx.exe
File opened (read-only)	\??\i:	avwytx.exe
File opened (read-only)	\??\k:	avwytx.exe
File opened (read-only)	\??\m:	avwytx.exe
File opened (read-only)	\??\z:	avwytx.exe
File opened (read-only)	\??\h:	avwytx.exe
File opened (read-only)	\??\j:	avwytx.exe
File opened (read-only)	\??\p:	avwytx.exe
File opened (read-only)	\??\u:	avwytx.exe
File opened (read-only)	\??\w:	avwytx.exe
File opened (read-only)	\??\y:	avwytx.exe
File opened (read-only)	\??\a:	avwytx.exe
File opened (read-only)	\??\l:	avwytx.exe
File opened (read-only)	\??\n:	avwytx.exe
File opened (read-only)	\??\s:	avwytx.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	avwytx.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\bkqypxvb\avwytx.exe	ltrfq.exe
File opened for modification	\??\c:\Program Files\bkqypxvb	ltrfq.exe
File created	\??\c:\Program Files\bkqypxvb\avwytx.dll	ltrfq.exe
File created	\??\c:\Program Files\bkqypxvb\avwytx.exe	ltrfq.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	5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.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	ltrfq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avwytx.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
1224	cmd.exe
440	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	avwytx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	avwytx.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
440	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4648	avwytx.exe
4648	avwytx.exe
4648	avwytx.exe
4648	avwytx.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	avwytx.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3992	5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe
4560	ltrfq.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3992 wrote to memory of 1224	3992	5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe	86
PID 3992 wrote to memory of 1224	3992	5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe	86
PID 3992 wrote to memory of 1224	3992	5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe	86
PID 1224 wrote to memory of 440	1224	cmd.exe	88
PID 1224 wrote to memory of 440	1224	cmd.exe	88
PID 1224 wrote to memory of 440	1224	cmd.exe	88
PID 1224 wrote to memory of 4560	1224	cmd.exe	92
PID 1224 wrote to memory of 4560	1224	cmd.exe	92
PID 1224 wrote to memory of 4560	1224	cmd.exe	92
PID 4560 wrote to memory of 4648	4560	ltrfq.exe	94
PID 4560 wrote to memory of 4648	4560	ltrfq.exe	94
PID 4560 wrote to memory of 4648	4560	ltrfq.exe	94

C:\Users\Admin\AppData\Local\Temp\5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe
"C:\Users\Admin\AppData\Local\Temp\5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ltrfq.exe "C:\Users\Admin\AppData\Local\Temp\5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:440
- - C:\Users\Admin\AppData\Local\Temp\ltrfq.exe
    C:\Users\Admin\AppData\Local\Temp\\ltrfq.exe "C:\Users\Admin\AppData\Local\Temp\5518a4cc4b2cdbc70aaba759e92cb16ac22e74e89510aa876a53e7b9a1a5466f.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4560
  - - \??\c:\Program Files\bkqypxvb\avwytx.exe
      "c:\Program Files\bkqypxvb\avwytx.exe" "c:\Program Files\bkqypxvb\avwytx.dll",Compliance C:\Users\Admin\AppData\Local\Temp\ltrfq.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4648

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c c:\Program Files\bkqypxvb\avwytx.exe "c:\Program Files\bkqypxvb\avwytx.dll",Compliance
1⤵
PID:5968

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

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

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

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\bkqypxvb\avwytx.dll

Filesize
141KB

MD5
84450381b07b19e5cee2a5033418e94f

SHA1
b4fc28a3c7689f074dc2d47cf2e9c93bceb551bf

SHA256
2ec85a397fc5fa36b0216954a90dbbe7ccc4f4ce96ddca2ecd885284dce67ee1

SHA512
7ed2390cdcd023283a05e750062d12baa7e6a15683ff51bca4b766015535ed1eeb97fec3e06a885074a00a5cc5268d4746d76f3a41b11a0451df66a325307ad2

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

Filesize
206KB

MD5
1f63c7944b6b1f550bf3e378981ac221

SHA1
7fc7fe59b9351296e4cbe9fbb533a5ead1f7ea4e

SHA256
b4e100051a37d44f28c901b9fed9a28610767fc4b2f0b9faa4b7da86ac103627

SHA512
214416a56e24c7210af4657546437769f94f43c128ff44df04ac19e00f78ec8641d1d98225b36898ce3219d981c3bef9f8cddb808fc4b88048aa5ab48483cece

Download Submit
\??\c:\Program Files\bkqypxvb\avwytx.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
memory/3992-4-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3992-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3992-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3992-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4560-8-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4560-9-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4560-14-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4648-19-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4648-20-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4648-22-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/4648-24-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads