gh0strat | a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974

Analysis

max time kernel
166s
max time network
158s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 22:37

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General

Target

a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
Size

272KB
MD5

9c86a17f20093b7524829d2ddc75ecb4
SHA1

aee458162a2f0850cdb535fd220507fee8ea9b0a
SHA256

a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974
SHA512

8b5a9969f472af81f5838940efe9a9ce2a4ce99d5f8f9e968364c7680f129234a7c868dcf7ac63b3c3131f3fcce69023fb41066703843a4c1237a5b39021e660
SSDEEP

6144:qyqgeXfYpBT3Ye77MF79n0KXs0YKMsHleE8wUV6Ed9E:qyqgeXfYTYe7InbDHCwab9

Score

10^/10

gh0strat bootkit persistence rat

Malware Config

Signatures

Gh0st RAT payload 6 IoCs

resource	yara_rule
behavioral1/memory/944-55-0x0000000000400000-0x0000000000481000-memory.dmp	family_gh0strat
behavioral1/memory/944-64-0x0000000000400000-0x0000000000481000-memory.dmp	family_gh0strat
behavioral1/files/0x0008000000013109-63.dat	family_gh0strat
behavioral1/files/0x0008000000013109-69.dat	family_gh0strat
behavioral1/memory/856-76-0x0000000020000000-0x0000000020027000-memory.dmp	family_gh0strat
behavioral1/memory/944-82-0x0000000000400000-0x0000000000481000-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
856	ctfn0m.ini
2032	ctfn0m.exe

Deletes itself 1 IoCs

pid	Process
1496	cmd.exe

Loads dropped DLL 6 IoCs

pid	Process
944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
856	ctfn0m.ini
2032	ctfn0m.exe
2032	ctfn0m.exe
2032	ctfn0m.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 created	C:\Program Files\Common Files\ctfn0m.bat	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
File created	C:\Program Files\Common Files\zidong.bat	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
File created	C:\Program Files\2658\26589999ctfn0n.2658lm	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
File created	C:\Program Files\Common Files\ctfn0m.dll	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
File created	C:\Program Files\Common Files\ctfn0m.ini	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
File opened for modification	C:\Program Files\Common Files\ctfn0m.ini	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe

Launches sc.exe 1 IoCs

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

pid	Process
676	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
856	ctfn0m.ini
856	ctfn0m.ini

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 856	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	28
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 2032	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	29
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 944 wrote to memory of 920	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	31
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 2032 wrote to memory of 1988	2032	ctfn0m.exe	30
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 944 wrote to memory of 1496	944	a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe	33
PID 920 wrote to memory of 676	920	cmd.exe	36
PID 920 wrote to memory of 676	920	cmd.exe	36
PID 920 wrote to memory of 676	920	cmd.exe	36
PID 920 wrote to memory of 676	920	cmd.exe	36
PID 920 wrote to memory of 676	920	cmd.exe	36
PID 920 wrote to memory of 676	920	cmd.exe	36
PID 920 wrote to memory of 676	920	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe
"C:\Users\Admin\AppData\Local\Temp\a57f22af3a7ccd6767407a6ea7df326fbcad806f77761c63cb90994abc25b974.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:944
- C:\Program Files\Common Files\ctfn0m.ini
  "C:\Program Files\Common Files\ctfn0m.ini" "C:\Program Files\2658\26589999ctfn0n.2658lm" ServiceMain
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:856
- C:\Documents and Settings\ctfn0m.exe
  "C:\Documents and Settings\ctfn0m.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2032
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del C:\DOCUME~1\ctfn0m.exe
    3⤵
    PID:1988
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Program Files\Common Files\zidong.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:920
- - C:\Windows\SysWOW64\sc.exe
    sc config RasAuto start= auto
    3⤵
    - Launches sc.exe
    PID:676
- C:\Windows\SysWOW64\cmd.exe
  cmd /c del C:\Users\Admin\AppData\Local\Temp\A57F22~1.EXE
  2⤵
  - Deletes itself
  PID:1496

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

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Downloads

C:\Documents and Settings\ctfn0m.exe

Filesize
24.0MB

MD5
4301eb9e34773752b50934c1a8f2d435

SHA1
1231cc4109dc90fe4fa5aefccdbe73487bcf14a4

SHA256
900ccd6bd6a5d239514d1589564b2779e4da1467269b23a295ae3839ab29caab

SHA512
0440702bbbe5063e76e5c6c7249e9b43a79502cf3bb3e1610ca319c02628e32897f3bb98fcaa9377ba89cfea9779f233edc72697566f9e7f5e852913f9bceaff

Download Submit
C:\Program Files\2658\26589999ctfn0n.2658lm

Filesize
24.1MB

MD5
11bad3a0ce2055c5edf151a781da12cb

SHA1
94ca003904e8a30316920f089fd8fab3055d8b58

SHA256
0f670243244a34afad8a550bac7a748df1e004a2850bb0f27b16421691f4d568

SHA512
d5896a2f1a0fe79f79a3a022a90571e5319ffe576eaa782b60c1a5ecff0d4e09e2fa05ee86595c95947ea8d9f19b16b50b7206f5166363d2fe83d9d2bdd3b842

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\Common Files\zidong.bat

Filesize
44B

MD5
ea72733acebe9b418fb30d68b5a8c3df

SHA1
4bb0c9592895e902c95a190e9987ba82087060c0

SHA256
e4f714f6333f7f7e3f427072329471a22760d65c92311f3bd4c1d3cf6503a6ee

SHA512
4be94a98d79b54836765d724be21b91ff3a448fe8c921e30f3c929e87f6d0cce7be74005b7f5b2958f1404de601bbad658929a8aa7efbdfa95c6dd93cc15bff6

Download Submit
C:\Users\ctfn0m.exe

Filesize
24.0MB

MD5
4301eb9e34773752b50934c1a8f2d435

SHA1
1231cc4109dc90fe4fa5aefccdbe73487bcf14a4

SHA256
900ccd6bd6a5d239514d1589564b2779e4da1467269b23a295ae3839ab29caab

SHA512
0440702bbbe5063e76e5c6c7249e9b43a79502cf3bb3e1610ca319c02628e32897f3bb98fcaa9377ba89cfea9779f233edc72697566f9e7f5e852913f9bceaff

Download Submit
\Program Files\2658\26589999ctfn0n.2658lm

Filesize
24.1MB

MD5
11bad3a0ce2055c5edf151a781da12cb

SHA1
94ca003904e8a30316920f089fd8fab3055d8b58

SHA256
0f670243244a34afad8a550bac7a748df1e004a2850bb0f27b16421691f4d568

SHA512
d5896a2f1a0fe79f79a3a022a90571e5319ffe576eaa782b60c1a5ecff0d4e09e2fa05ee86595c95947ea8d9f19b16b50b7206f5166363d2fe83d9d2bdd3b842

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

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\ctfn0m.exe

Filesize
24.0MB

MD5
4301eb9e34773752b50934c1a8f2d435

SHA1
1231cc4109dc90fe4fa5aefccdbe73487bcf14a4

SHA256
900ccd6bd6a5d239514d1589564b2779e4da1467269b23a295ae3839ab29caab

SHA512
0440702bbbe5063e76e5c6c7249e9b43a79502cf3bb3e1610ca319c02628e32897f3bb98fcaa9377ba89cfea9779f233edc72697566f9e7f5e852913f9bceaff

Download Submit
\Users\ctfn0m.exe

Filesize
24.0MB

MD5
4301eb9e34773752b50934c1a8f2d435

SHA1
1231cc4109dc90fe4fa5aefccdbe73487bcf14a4

SHA256
900ccd6bd6a5d239514d1589564b2779e4da1467269b23a295ae3839ab29caab

SHA512
0440702bbbe5063e76e5c6c7249e9b43a79502cf3bb3e1610ca319c02628e32897f3bb98fcaa9377ba89cfea9779f233edc72697566f9e7f5e852913f9bceaff

Download Submit
\Users\ctfn0m.exe

Filesize
24.0MB

MD5
4301eb9e34773752b50934c1a8f2d435

SHA1
1231cc4109dc90fe4fa5aefccdbe73487bcf14a4

SHA256
900ccd6bd6a5d239514d1589564b2779e4da1467269b23a295ae3839ab29caab

SHA512
0440702bbbe5063e76e5c6c7249e9b43a79502cf3bb3e1610ca319c02628e32897f3bb98fcaa9377ba89cfea9779f233edc72697566f9e7f5e852913f9bceaff

Download Submit
\Users\ctfn0m.exe

Filesize
24.0MB

MD5
4301eb9e34773752b50934c1a8f2d435

SHA1
1231cc4109dc90fe4fa5aefccdbe73487bcf14a4

SHA256
900ccd6bd6a5d239514d1589564b2779e4da1467269b23a295ae3839ab29caab

SHA512
0440702bbbe5063e76e5c6c7249e9b43a79502cf3bb3e1610ca319c02628e32897f3bb98fcaa9377ba89cfea9779f233edc72697566f9e7f5e852913f9bceaff

Download Submit
memory/856-76-0x0000000020000000-0x0000000020027000-memory.dmp

Filesize
156KB

Download
memory/944-56-0x0000000000280000-0x0000000000301000-memory.dmp

Filesize
516KB

Download
memory/944-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/944-57-0x0000000000380000-0x00000000003BE000-memory.dmp

Filesize
248KB

Download
memory/944-55-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/944-66-0x00000000003D0000-0x00000000003D8000-memory.dmp

Filesize
32KB

Download
memory/944-87-0x0000000000380000-0x00000000003BE000-memory.dmp

Filesize
248KB

Download
memory/944-82-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/944-64-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2032-78-0x0000000000020000-0x0000000000028000-memory.dmp

Filesize
32KB

Download
memory/2032-77-0x0000000000020000-0x0000000000028000-memory.dmp

Filesize
32KB

Download
memory/2032-84-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2032-75-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download