gh0strat | 71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae

General

Target

71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe
Size

205KB
MD5

4a9f9117844a1bb194be94f2f706937c
SHA1

3428134c082eba947a439b2f0645bd2a5e3847d1
SHA256

71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae
SHA512

372ef57c9c24ae20b738fb4463076aa9d6b8224fac1e939771d1089f69589a6f23b0301623ca004d1dd1beb6cdb202fdc8900d28a11958ed1a9eb70ebadbd22e
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
4800	fjlff.exe

Executes dropped EXE 2 IoCs

pid	Process
4800	fjlff.exe
6008	xdr.exe

Loads dropped DLL 1 IoCs

pid	Process
6008	xdr.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-1-5-21-446031748-3036493239-2009529691-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\ywwik\\xdr.exe \"c:\\Program Files\\ywwik\\xdrsm.dll\",Compliance"	xdr.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)	\??\i:	xdr.exe
File opened (read-only)	\??\m:	xdr.exe
File opened (read-only)	\??\n:	xdr.exe
File opened (read-only)	\??\q:	xdr.exe
File opened (read-only)	\??\t:	xdr.exe
File opened (read-only)	\??\a:	xdr.exe
File opened (read-only)	\??\e:	xdr.exe
File opened (read-only)	\??\g:	xdr.exe
File opened (read-only)	\??\h:	xdr.exe
File opened (read-only)	\??\p:	xdr.exe
File opened (read-only)	\??\r:	xdr.exe
File opened (read-only)	\??\s:	xdr.exe
File opened (read-only)	\??\u:	xdr.exe
File opened (read-only)	\??\b:	xdr.exe
File opened (read-only)	\??\j:	xdr.exe
File opened (read-only)	\??\l:	xdr.exe
File opened (read-only)	\??\o:	xdr.exe
File opened (read-only)	\??\v:	xdr.exe
File opened (read-only)	\??\z:	xdr.exe
File opened (read-only)	\??\k:	xdr.exe
File opened (read-only)	\??\w:	xdr.exe
File opened (read-only)	\??\x:	xdr.exe
File opened (read-only)	\??\y:	xdr.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	xdr.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\ywwik\xdrsm.dll	fjlff.exe
File created	\??\c:\Program Files\ywwik\xdr.exe	fjlff.exe
File opened for modification	\??\c:\Program Files\ywwik\xdr.exe	fjlff.exe
File opened for modification	\??\c:\Program Files\ywwik	fjlff.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	71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.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	fjlff.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xdr.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
3920	cmd.exe
2680	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	xdr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	xdr.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2680	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6008	xdr.exe
6008	xdr.exe
6008	xdr.exe
6008	xdr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6008	xdr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
6060	71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe
4800	fjlff.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 6060 wrote to memory of 3920	6060	71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe	88
PID 6060 wrote to memory of 3920	6060	71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe	88
PID 6060 wrote to memory of 3920	6060	71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe	88
PID 3920 wrote to memory of 2680	3920	cmd.exe	90
PID 3920 wrote to memory of 2680	3920	cmd.exe	90
PID 3920 wrote to memory of 2680	3920	cmd.exe	90
PID 3920 wrote to memory of 4800	3920	cmd.exe	93
PID 3920 wrote to memory of 4800	3920	cmd.exe	93
PID 3920 wrote to memory of 4800	3920	cmd.exe	93
PID 4800 wrote to memory of 6008	4800	fjlff.exe	94
PID 4800 wrote to memory of 6008	4800	fjlff.exe	94
PID 4800 wrote to memory of 6008	4800	fjlff.exe	94

C:\Users\Admin\AppData\Local\Temp\71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe
"C:\Users\Admin\AppData\Local\Temp\71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:6060
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fjlff.exe "C:\Users\Admin\AppData\Local\Temp\71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3920
- - 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:2680
- - C:\Users\Admin\AppData\Local\Temp\fjlff.exe
    C:\Users\Admin\AppData\Local\Temp\\fjlff.exe "C:\Users\Admin\AppData\Local\Temp\71a48f2ce5e665c7b8d058f56e15b5890dca951f3b812e6a85e91ae3379afdae.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:4800
  - - \??\c:\Program Files\ywwik\xdr.exe
      "c:\Program Files\ywwik\xdr.exe" "c:\Program Files\ywwik\xdrsm.dll",Compliance C:\Users\Admin\AppData\Local\Temp\fjlff.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:6008

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c c:\Program Files\ywwik\xdr.exe "c:\Program Files\ywwik\xdrsm.dll",Compliance
1⤵
PID:4624

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\ywwik\xdr.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
205KB

MD5
a9a28cace6e4dfb34ad6113bd0ffaf3b

SHA1
af11995c3a45651eeba287dd6dfbe79b00130fb1

SHA256
cd1222012b03c6ff5f5be2a412f7506149dd7c2e1112fb726919d95ef154d08a

SHA512
ac94e238ac98b2394a59cbe6452c83aa31f83c025907bc828324aa20b36de4a9cc3005e6b0cbd06700e738607da7cc8879bf5283efa33996cd5bf1e2819f15bc

Download Submit
\??\c:\Program Files\ywwik\xdrsm.dll

Filesize
141KB

MD5
fca1ce9a8e25bc84bcecf862a5c486ec

SHA1
06821f5b71c48b353ce6652bd89b76f1d25ff8cd

SHA256
c03d74e4f12b711dfd11245170cc67c6145011809c951ee80983cc288f26efdf

SHA512
1c2c5833ad94404cc5f663ee64f4f5ec3e501985a4b6bccb380ffd07930dee547f32b49c0dd4d0c4c27db2367c049dd5c53dad0a0270197925f703a9072955f4

Download Submit
memory/4800-9-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4800-10-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/4800-16-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/6008-20-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/6008-21-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/6008-24-0x0000000010000000-0x000000001004E000-memory.dmp

Filesize
312KB

Download
memory/6060-5-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/6060-0-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/6060-1-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download
memory/6060-2-0x0000000000400000-0x000000000044901D-memory.dmp

Filesize
292KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads