gh0strat | d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1

Analysis

max time kernel
133s
max time network
138s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05/12/2022, 17:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
Size

272KB
MD5

4b74fa308c2c26b0f71757565b8951e9
SHA1

eadcfbe0a4dadd531a1cd750b10adbefabb5f749
SHA256

d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1
SHA512

58fd4aaf9017cb81f0874ce4e29d57fb236ef11aac61862288269a19c5673f6823860586abbe7ede2e21bd13aa8e8f79f5288ae533a3bc7af208217d3ddae64b
SSDEEP

6144:ALge5sXPoBQfFMa36PaS+CGsoozQ9bVx0uL5wy:QgeEoiaaqaS+fkgx0uL

Score

10^/10

gh0strat bootkit persistence rat

Malware Config

Signatures

Gh0st RAT payload 8 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012677-63.dat	family_gh0strat
behavioral1/memory/2032-64-0x0000000000400000-0x0000000000482000-memory.dmp	family_gh0strat
behavioral1/files/0x0009000000012677-70.dat	family_gh0strat
behavioral1/files/0x0009000000012677-72.dat	family_gh0strat
behavioral1/files/0x0009000000012677-71.dat	family_gh0strat
behavioral1/files/0x0009000000012677-73.dat	family_gh0strat
behavioral1/memory/2004-74-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/2032-86-0x0000000000400000-0x0000000000482000-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

Executes dropped EXE 2 IoCs

pid	Process
2004	ctfn0m.ini
1888	ctsstm.exe

Deletes itself 1 IoCs

pid	Process
280	cmd.exe

Loads dropped DLL 9 IoCs

pid	Process
2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
2004	ctfn0m.ini
2004	ctfn0m.ini
2004	ctfn0m.ini
2004	ctfn0m.ini
2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
1888	ctsstm.exe
1888	ctsstm.exe
1888	ctsstm.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

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	ctfn0m.ini

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Common Files\loveuu.png	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
File created	C:\Program Files\Common Files\loveuu.png	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
File created	C:\Program Files\Common Files\ctfn0m.ini	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
File opened for modification	C:\Program Files\Common Files\ctfn0m.ini	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
File created	C:\Program Files\Common Files\loveuu.bat	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
File created	C:\Program Files\worubkk\gnthfsum.exe	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1264	sc.exe
1532	sc.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	ctfn0m.ini
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	ctfn0m.ini

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2004	ctfn0m.ini
2004	ctfn0m.ini

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 2004	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	28
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1532	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	29
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1264	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	30
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 2032 wrote to memory of 1888	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	33
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 1888 wrote to memory of 1660	1888	ctsstm.exe	34
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35
PID 2032 wrote to memory of 280	2032	d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe	35

C:\Users\Admin\AppData\Local\Temp\d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe
"C:\Users\Admin\AppData\Local\Temp\d8fd5256f3d4e921ede509635478ac04f964f0ca278003aa7e3c94579ffb37b1.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Program Files\Common Files\ctfn0m.ini
  "C:\Program Files\Common Files\ctfn0m.ini" "C:\Program Files\worubkk\gnthfsum.exe" ServiceMain
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2004
- C:\Windows\SysWOW64\sc.exe
  sc config RasAuto start= auto
  2⤵
  - Launches sc.exe
  PID:1532
- C:\Windows\SysWOW64\sc.exe
  sc config RasAuto start= auto
  2⤵
  - Launches sc.exe
  PID:1264
- C:\Documents and Settings\ctsstm.exe
  "C:\Documents and Settings\ctsstm.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1888
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del C:\DOCUME~1\ctsstm.exe
    3⤵
    PID:1660
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del C:\Users\Admin\AppData\Local\Temp\D8FD52~1.EXE
  2⤵
  - Deletes itself
  PID:280

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Documents and Settings\ctsstm.exe

Filesize
10.5MB

MD5
3a1bdc977fbede7d3e76059754b17831

SHA1
ee89dcf7f8ccc33f1c7d768482627da0c681b1bb

SHA256
f941d4105193791e8ece7cae565c76d6757cc58246c034fd1620b29cd9dc73e9

SHA512
bc32f8fdae6055a668ebf6191a402ee78ce12076e703314d880982a7695d5af471356aed6f7908b345cec12f4e265bed21170b8b5c8b4a94fa916393a4f49e0c

Download Submit
C:\Program Files\Common Files\ctfn0m.ini

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
C:\Program Files\Common Files\ctfn0m.ini

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
C:\Program Files\worubkk\gnthfsum.exe

Filesize
27.1MB

MD5
8d9bd1cdc6a009cda8c98b87d465b3ea

SHA1
119f74f6d4858a3a243d53c127e45f03e31c25f0

SHA256
56acbd7417d8de358032f8f3c07304987a6e2c018d3459726fa79f1d50c5eeac

SHA512
75137a8e0b6a937b79207d00eec013e4eab2da2654baba801067384e5f2a1e908c563dfc157753c29ed51d0afc2afba296e110db90ea5d5e098b959b0edfea6d

Download Submit
C:\Users\ctsstm.exe

Filesize
10.5MB

MD5
3a1bdc977fbede7d3e76059754b17831

SHA1
ee89dcf7f8ccc33f1c7d768482627da0c681b1bb

SHA256
f941d4105193791e8ece7cae565c76d6757cc58246c034fd1620b29cd9dc73e9

SHA512
bc32f8fdae6055a668ebf6191a402ee78ce12076e703314d880982a7695d5af471356aed6f7908b345cec12f4e265bed21170b8b5c8b4a94fa916393a4f49e0c

Download Submit
\Program Files\Common Files\ctfn0m.ini

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Program Files\worubkk\gnthfsum.exe

Filesize
27.1MB

MD5
8d9bd1cdc6a009cda8c98b87d465b3ea

SHA1
119f74f6d4858a3a243d53c127e45f03e31c25f0

SHA256
56acbd7417d8de358032f8f3c07304987a6e2c018d3459726fa79f1d50c5eeac

SHA512
75137a8e0b6a937b79207d00eec013e4eab2da2654baba801067384e5f2a1e908c563dfc157753c29ed51d0afc2afba296e110db90ea5d5e098b959b0edfea6d

Download Submit
\Program Files\worubkk\gnthfsum.exe

Filesize
27.1MB

MD5
8d9bd1cdc6a009cda8c98b87d465b3ea

SHA1
119f74f6d4858a3a243d53c127e45f03e31c25f0

SHA256
56acbd7417d8de358032f8f3c07304987a6e2c018d3459726fa79f1d50c5eeac

SHA512
75137a8e0b6a937b79207d00eec013e4eab2da2654baba801067384e5f2a1e908c563dfc157753c29ed51d0afc2afba296e110db90ea5d5e098b959b0edfea6d

Download Submit
\Program Files\worubkk\gnthfsum.exe

Filesize
27.1MB

MD5
8d9bd1cdc6a009cda8c98b87d465b3ea

SHA1
119f74f6d4858a3a243d53c127e45f03e31c25f0

SHA256
56acbd7417d8de358032f8f3c07304987a6e2c018d3459726fa79f1d50c5eeac

SHA512
75137a8e0b6a937b79207d00eec013e4eab2da2654baba801067384e5f2a1e908c563dfc157753c29ed51d0afc2afba296e110db90ea5d5e098b959b0edfea6d

Download Submit
\Program Files\worubkk\gnthfsum.exe

Filesize
27.1MB

MD5
8d9bd1cdc6a009cda8c98b87d465b3ea

SHA1
119f74f6d4858a3a243d53c127e45f03e31c25f0

SHA256
56acbd7417d8de358032f8f3c07304987a6e2c018d3459726fa79f1d50c5eeac

SHA512
75137a8e0b6a937b79207d00eec013e4eab2da2654baba801067384e5f2a1e908c563dfc157753c29ed51d0afc2afba296e110db90ea5d5e098b959b0edfea6d

Download Submit
\Users\ctsstm.exe

Filesize
10.5MB

MD5
3a1bdc977fbede7d3e76059754b17831

SHA1
ee89dcf7f8ccc33f1c7d768482627da0c681b1bb

SHA256
f941d4105193791e8ece7cae565c76d6757cc58246c034fd1620b29cd9dc73e9

SHA512
bc32f8fdae6055a668ebf6191a402ee78ce12076e703314d880982a7695d5af471356aed6f7908b345cec12f4e265bed21170b8b5c8b4a94fa916393a4f49e0c

Download Submit
\Users\ctsstm.exe

Filesize
10.5MB

MD5
3a1bdc977fbede7d3e76059754b17831

SHA1
ee89dcf7f8ccc33f1c7d768482627da0c681b1bb

SHA256
f941d4105193791e8ece7cae565c76d6757cc58246c034fd1620b29cd9dc73e9

SHA512
bc32f8fdae6055a668ebf6191a402ee78ce12076e703314d880982a7695d5af471356aed6f7908b345cec12f4e265bed21170b8b5c8b4a94fa916393a4f49e0c

Download Submit
\Users\ctsstm.exe

Filesize
10.5MB

MD5
3a1bdc977fbede7d3e76059754b17831

SHA1
ee89dcf7f8ccc33f1c7d768482627da0c681b1bb

SHA256
f941d4105193791e8ece7cae565c76d6757cc58246c034fd1620b29cd9dc73e9

SHA512
bc32f8fdae6055a668ebf6191a402ee78ce12076e703314d880982a7695d5af471356aed6f7908b345cec12f4e265bed21170b8b5c8b4a94fa916393a4f49e0c

Download Submit
\Users\ctsstm.exe

Filesize
10.5MB

MD5
3a1bdc977fbede7d3e76059754b17831

SHA1
ee89dcf7f8ccc33f1c7d768482627da0c681b1bb

SHA256
f941d4105193791e8ece7cae565c76d6757cc58246c034fd1620b29cd9dc73e9

SHA512
bc32f8fdae6055a668ebf6191a402ee78ce12076e703314d880982a7695d5af471356aed6f7908b345cec12f4e265bed21170b8b5c8b4a94fa916393a4f49e0c

Download Submit
memory/1888-85-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2004-74-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/2032-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2032-56-0x0000000000360000-0x00000000003E2000-memory.dmp

Filesize
520KB

Download
memory/2032-57-0x0000000000250000-0x000000000028E000-memory.dmp

Filesize
248KB

Download
memory/2032-54-0x0000000076031000-0x0000000076033000-memory.dmp

Filesize
8KB

Download
memory/2032-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2032-65-0x0000000000250000-0x000000000028E000-memory.dmp

Filesize
248KB

Download
memory/2032-87-0x0000000000250000-0x000000000028E000-memory.dmp

Filesize
248KB

Download
memory/2032-86-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download