gh0strat | 5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f

General

Target

5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe
Size

207KB
MD5

c9d720436e83a30bc1e16ff2737d8a22
SHA1

ba192740c249bf6c0d64c89a0b52810ac6766881
SHA256

5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f
SHA512

cba92b6bed50063d4334b084af153775320fd630704ea5a7389058bd908823f0368407fd7b34e0d4bcdd33e3ffa411fd0046924211bb103317e9fab3d401a909
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
2692	hgccb.exe

Executes dropped EXE 2 IoCs

pid	Process
2692	hgccb.exe
1736	reyh.exe

Loads dropped DLL 7 IoCs

pid	Process
2008	cmd.exe
2008	cmd.exe
2692	hgccb.exe
1736	reyh.exe
1736	reyh.exe
1736	reyh.exe
1736	reyh.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\ocaos\\reyh.exe \"c:\\Program Files\\ocaos\\reyhe.dll\",Compliance"	reyh.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)	\??\g:	reyh.exe
File opened (read-only)	\??\i:	reyh.exe
File opened (read-only)	\??\k:	reyh.exe
File opened (read-only)	\??\l:	reyh.exe
File opened (read-only)	\??\h:	reyh.exe
File opened (read-only)	\??\j:	reyh.exe
File opened (read-only)	\??\q:	reyh.exe
File opened (read-only)	\??\v:	reyh.exe
File opened (read-only)	\??\z:	reyh.exe
File opened (read-only)	\??\o:	reyh.exe
File opened (read-only)	\??\a:	reyh.exe
File opened (read-only)	\??\e:	reyh.exe
File opened (read-only)	\??\m:	reyh.exe
File opened (read-only)	\??\n:	reyh.exe
File opened (read-only)	\??\r:	reyh.exe
File opened (read-only)	\??\s:	reyh.exe
File opened (read-only)	\??\b:	reyh.exe
File opened (read-only)	\??\t:	reyh.exe
File opened (read-only)	\??\u:	reyh.exe
File opened (read-only)	\??\w:	reyh.exe
File opened (read-only)	\??\x:	reyh.exe
File opened (read-only)	\??\y:	reyh.exe
File opened (read-only)	\??\p:	reyh.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	reyh.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\ocaos\reyh.exe	hgccb.exe
File opened for modification	\??\c:\Program Files\ocaos\reyh.exe	hgccb.exe
File opened for modification	\??\c:\Program Files\ocaos	hgccb.exe
File created	\??\c:\Program Files\ocaos\reyhe.dll	hgccb.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	hgccb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reyh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.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
2008	cmd.exe
2392	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	reyh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	reyh.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2392	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1736	reyh.exe
1736	reyh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1736	reyh.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
768	5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe
2692	hgccb.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 2008	768	5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe	30
PID 768 wrote to memory of 2008	768	5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe	30
PID 768 wrote to memory of 2008	768	5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe	30
PID 768 wrote to memory of 2008	768	5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe	30
PID 2008 wrote to memory of 2392	2008	cmd.exe	32
PID 2008 wrote to memory of 2392	2008	cmd.exe	32
PID 2008 wrote to memory of 2392	2008	cmd.exe	32
PID 2008 wrote to memory of 2392	2008	cmd.exe	32
PID 2008 wrote to memory of 2692	2008	cmd.exe	33
PID 2008 wrote to memory of 2692	2008	cmd.exe	33
PID 2008 wrote to memory of 2692	2008	cmd.exe	33
PID 2008 wrote to memory of 2692	2008	cmd.exe	33
PID 2692 wrote to memory of 1736	2692	hgccb.exe	34
PID 2692 wrote to memory of 1736	2692	hgccb.exe	34
PID 2692 wrote to memory of 1736	2692	hgccb.exe	34
PID 2692 wrote to memory of 1736	2692	hgccb.exe	34

C:\Users\Admin\AppData\Local\Temp\5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe
"C:\Users\Admin\AppData\Local\Temp\5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hgccb.exe "C:\Users\Admin\AppData\Local\Temp\5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2008
- - 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:2392
- - C:\Users\Admin\AppData\Local\Temp\hgccb.exe
    C:\Users\Admin\AppData\Local\Temp\\hgccb.exe "C:\Users\Admin\AppData\Local\Temp\5a94b33f4ef24a398089499cab5a9fa2f32610f97bde49bbc178c7f2dad2598f.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:2692
  - - \??\c:\Program Files\ocaos\reyh.exe
      "c:\Program Files\ocaos\reyh.exe" "c:\Program Files\ocaos\reyhe.dll",Compliance C:\Users\Admin\AppData\Local\Temp\hgccb.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:1736

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hgccb.exe

Filesize
208KB

MD5
2f0f02b7ae4f9c25636c6853df48249c

SHA1
87721b93a8c5737d21e54d294e0b109d0782464b

SHA256
ccdda100a6d2e015bf7f40ed461b9047e6b00e15dfea274e5f3c23fb1cb9b8c4

SHA512
e0cceed6462b1e64cb1a0a46da597e42fcf008f9b3080f45db4cfc37059ef05b0611b192ba8d6579c9c9c33c83d6ea3ea66e147d827a1a91f97ca0419df1762f

Download Submit
\??\c:\Program Files\ocaos\reyhe.dll

Filesize
141KB

MD5
ba9c289de8c0ba9699178b8c96d4b01a

SHA1
a80316f73d92de969e4adc1fbe7322fe0ae407e4

SHA256
be9300c1b88317f7f3fcc47dcb780f39527ea1d3e937fea9ce44c4273484e545

SHA512
ea287b9d83b1f40ac1cdc11bd8af514af4b2e8f5d51634852afba4131c0c6eb2d465f67ec0836e0a957b7b0418cf3a49368babbedde1af32fff457d635a775aa

Download Submit
\Program Files\ocaos\reyh.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/768-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/768-4-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/768-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/768-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/1736-32-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1736-28-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1736-31-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1736-34-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1736-30-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/1736-29-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/2008-9-0x0000000000370000-0x00000000003BA000-memory.dmp

Filesize
296KB

Download
memory/2008-7-0x0000000000370000-0x00000000003BA000-memory.dmp

Filesize
296KB

Download
memory/2692-11-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2692-21-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2692-13-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/2692-12-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads