gh0strat | 5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae

General

Target

5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe
Size

207KB
MD5

1632d73a01e86f19487d9cc009d71b08
SHA1

8e82da1a899bf42311423ed9ef737cf45f3630fd
SHA256

5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae
SHA512

b060b0cee0472933db7423e1775651598710fe86c7eaea795a6acddaf71df708eff1b5debaa9bba9687d9c96d2bde2175dbb884d4962907be6503be622e10ac9
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
2796	apdfu.exe

Executes dropped EXE 2 IoCs

pid	Process
2796	apdfu.exe
2624	ocs.exe

Loads dropped DLL 7 IoCs

pid	Process
2792	cmd.exe
2792	cmd.exe
2796	apdfu.exe
2624	ocs.exe
2624	ocs.exe
2624	ocs.exe
2624	ocs.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\yrdbjo\\ocs.exe \"c:\\Program Files\\yrdbjo\\ocsot.dll\",Compliance"	ocs.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)	\??\x:	ocs.exe
File opened (read-only)	\??\y:	ocs.exe
File opened (read-only)	\??\e:	ocs.exe
File opened (read-only)	\??\k:	ocs.exe
File opened (read-only)	\??\o:	ocs.exe
File opened (read-only)	\??\q:	ocs.exe
File opened (read-only)	\??\w:	ocs.exe
File opened (read-only)	\??\z:	ocs.exe
File opened (read-only)	\??\l:	ocs.exe
File opened (read-only)	\??\r:	ocs.exe
File opened (read-only)	\??\s:	ocs.exe
File opened (read-only)	\??\t:	ocs.exe
File opened (read-only)	\??\v:	ocs.exe
File opened (read-only)	\??\b:	ocs.exe
File opened (read-only)	\??\g:	ocs.exe
File opened (read-only)	\??\h:	ocs.exe
File opened (read-only)	\??\m:	ocs.exe
File opened (read-only)	\??\u:	ocs.exe
File opened (read-only)	\??\a:	ocs.exe
File opened (read-only)	\??\i:	ocs.exe
File opened (read-only)	\??\j:	ocs.exe
File opened (read-only)	\??\n:	ocs.exe
File opened (read-only)	\??\p:	ocs.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	ocs.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\yrdbjo	apdfu.exe
File created	\??\c:\Program Files\yrdbjo\ocsot.dll	apdfu.exe
File created	\??\c:\Program Files\yrdbjo\ocs.exe	apdfu.exe
File opened for modification	\??\c:\Program Files\yrdbjo\ocs.exe	apdfu.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	5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.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	apdfu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ocs.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
2792	cmd.exe
2904	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	ocs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ocs.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2904	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2624	ocs.exe
2624	ocs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2624	ocs.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3008	5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe
2796	apdfu.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2792	3008	5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe	30
PID 3008 wrote to memory of 2792	3008	5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe	30
PID 3008 wrote to memory of 2792	3008	5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe	30
PID 3008 wrote to memory of 2792	3008	5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe	30
PID 2792 wrote to memory of 2904	2792	cmd.exe	32
PID 2792 wrote to memory of 2904	2792	cmd.exe	32
PID 2792 wrote to memory of 2904	2792	cmd.exe	32
PID 2792 wrote to memory of 2904	2792	cmd.exe	32
PID 2792 wrote to memory of 2796	2792	cmd.exe	33
PID 2792 wrote to memory of 2796	2792	cmd.exe	33
PID 2792 wrote to memory of 2796	2792	cmd.exe	33
PID 2792 wrote to memory of 2796	2792	cmd.exe	33
PID 2796 wrote to memory of 2624	2796	apdfu.exe	34
PID 2796 wrote to memory of 2624	2796	apdfu.exe	34
PID 2796 wrote to memory of 2624	2796	apdfu.exe	34
PID 2796 wrote to memory of 2624	2796	apdfu.exe	34

C:\Users\Admin\AppData\Local\Temp\5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe
"C:\Users\Admin\AppData\Local\Temp\5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\apdfu.exe "C:\Users\Admin\AppData\Local\Temp\5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2792
- - 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:2904
- - C:\Users\Admin\AppData\Local\Temp\apdfu.exe
    C:\Users\Admin\AppData\Local\Temp\\apdfu.exe "C:\Users\Admin\AppData\Local\Temp\5dec1a8df4b2b5a8663cf908d61eb5f7b77e7868bddc40b842239edbf49e4bae.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2796
  - - \??\c:\Program Files\yrdbjo\ocs.exe
      "c:\Program Files\yrdbjo\ocs.exe" "c:\Program Files\yrdbjo\ocsot.dll",Compliance C:\Users\Admin\AppData\Local\Temp\apdfu.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:2624

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\yrdbjo\ocsot.dll

Filesize
141KB

MD5
e0ae47d418434dc9a5d6fed5237f9d21

SHA1
1c33b5d1d52d02cf0a3d81cd6d056409fa9b238a

SHA256
d2415fd651845b668602b8dab4ce8e63c8eb9cbd8a395975e052377269855153

SHA512
8bcd72ec3035e378919f45b270078928346fc5b9c92195f4a6c07bc1f0df5333afcc65732f08cb1e0881820ed83ef19f6200fd64ae23793750585cf3d14c5ea5

Download Submit
\Program Files\yrdbjo\ocs.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

Filesize
208KB

MD5
7cec29ef96d534341e8393e2585c0d3b

SHA1
086baa0a8a6130ad3edec7a7b7ea87ab790924a9

SHA256
b7287d5cc4de3c6bb58e5422013250c2e5f509a445e86d2ce68095c8eeffeb8c

SHA512
8a17ca0e26ba4395a19d13496d3d6b065e18271235ebb9b0ca3ee874898b4b2f4375f5f2b14376c590765d3c272e5954cd925036dc809981f38848bb2f13cfaf

Download Submit
memory/2624-31-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2624-28-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2624-27-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2792-8-0x0000000000210000-0x000000000025A000-memory.dmp

Filesize
296KB

Download
memory/2792-9-0x0000000000210000-0x000000000025A000-memory.dmp

Filesize
296KB

Download
memory/2796-11-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2796-12-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2796-20-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3008-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3008-4-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3008-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/3008-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads