gh0strat | 1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54

General

Target

1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe
Size

375KB
MD5

4a4ec92008973d2f90d9daa736a11cff
SHA1

823b8b124ea5184b2563a4c2aee148782211ca17
SHA256

1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54
SHA512

ea24a8dd88345e75a22279442637d58ef764a3d062139f952bf0cc73286f6d9b736314b3c66fa7ae7f5349b1b83ee4744ee3f734096e53fa88da7c1ed07976a6
SSDEEP

6144:mv5zQJVb5p72cHF1ybDFwekh212KhvwIb759QOaBjpaVRPu23E2rJmWjFc94:m4VOiF1WD7kE1dTYOi8V5u23zmWFy4

Score

10^/10

Malware Config

Signatures

Gh0st RAT payload 8 IoCs

resource	yara_rule
behavioral1/memory/5100-136-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/5100-137-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/5100-138-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4624-152-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4624-153-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4840-154-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/4624-158-0x0000000010000000-0x0000000010362000-memory.dmp	family_gh0strat
behavioral1/memory/2456-175-0x0000000010000000-0x0000000010362000-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 4 IoCs

pid	Process
4840	SQLSerasi.exe
4624	SQLSerasi.exe
2456	SQLSerasi.exe
4236	SQLSerasi.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/5100-133-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/5100-136-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/5100-137-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/5100-138-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4624-149-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4624-152-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4624-153-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4840-154-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/4624-158-0x0000000010000000-0x0000000010362000-memory.dmp	upx
behavioral1/memory/2456-175-0x0000000010000000-0x0000000010362000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	SQLSerasi.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	SQLSerasi.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe
File opened for modification	C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
308	4624	WerFault.exe	85

Checks processor information in registry 2 TTPs 5 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\1	SQLSerasi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString	SQLSerasi.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\2	SQLSerasi.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	SQLSerasi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	SQLSerasi.exe

Modifies data under HKEY_USERS 8 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	SQLSerasi.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	SQLSerasi.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	SQLSerasi.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	SQLSerasi.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	SQLSerasi.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	5100	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe
Token: SeDebugPrivilege	4840	SQLSerasi.exe
Token: SeDebugPrivilege	4624	SQLSerasi.exe
Token: SeDebugPrivilege	4624	SQLSerasi.exe
Token: SeDebugPrivilege	4624	SQLSerasi.exe
Token: SeDebugPrivilege	2456	SQLSerasi.exe
Token: SeDebugPrivilege	4236	SQLSerasi.exe
Token: SeDebugPrivilege	2456	SQLSerasi.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 4840	5100	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe	84
PID 5100 wrote to memory of 4840	5100	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe	84
PID 5100 wrote to memory of 4840	5100	1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe	84
PID 4624 wrote to memory of 2456	4624	SQLSerasi.exe	89
PID 4624 wrote to memory of 2456	4624	SQLSerasi.exe	89
PID 4624 wrote to memory of 2456	4624	SQLSerasi.exe	89
PID 4624 wrote to memory of 4236	4624	SQLSerasi.exe	88
PID 4624 wrote to memory of 4236	4624	SQLSerasi.exe	88
PID 4624 wrote to memory of 4236	4624	SQLSerasi.exe	88

C:\Users\Admin\AppData\Local\Temp\1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe
"C:\Users\Admin\AppData\Local\Temp\1f66dca8a4d3274b2ed67e1c54b0b92b778c782b37b873455146b3f7f0dace54.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
  "C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4840

C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
"C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 572
  2⤵
  - Program crash
  PID:308
- C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
  "C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4236
- C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe
  "C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious use of AdjustPrivilegeToken
  PID:2456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4624 -ip 4624
1⤵
PID:1048

Network

DNS

d.nxxxn.ga

SQLSerasi.exe

Remote address:

8.8.8.8:53

Request

d.nxxxn.ga

IN A

Response

d.nxxxn.ga

IN A

91.208.245.48
DNS

r.pengyou.com

SQLSerasi.exe

Remote address:

8.8.8.8:53

Request

r.pengyou.com

IN A

Response

r.pengyou.com

IN A

0.0.0.1

91.208.245.48:22251

d.nxxxn.ga

SQLSerasi.exe

260 B
5
93.184.220.29:80

322 B
7
104.46.162.224:443

322 B
7
209.197.3.8:80

322 B
7
209.197.3.8:80

322 B
7
209.197.3.8:80

322 B
7
104.80.225.205:443

322 B
7
91.208.245.48:22251

d.nxxxn.ga

SQLSerasi.exe

260 B
5

8.8.8.8:53

d.nxxxn.ga

dns

SQLSerasi.exe

56 B
72 B
1
1

DNS Request

d.nxxxn.ga

DNS Response

91.208.245.48
8.8.8.8:53

r.pengyou.com

dns

SQLSerasi.exe

59 B
75 B
1
1

DNS Request

r.pengyou.com

DNS Response

0.0.0.1

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
3ac2585cf4f0ceab0487514dd281bae7

SHA1
9c873e1f3ed25fa96391623fc344f8b5752a38e7

SHA256
58e154bd8bfc62aecbe266d232d14f5fe930567f364939b00fb6f68c3f87e8c3

SHA512
c2c61aee38951ba362e646d3ae7344857c3678fa35343e195ed31ce810efd5a66f976b71ee6435cf5c61f90a816345687ce0ab9500b5500b7b5d8a0e48202068

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
3ac2585cf4f0ceab0487514dd281bae7

SHA1
9c873e1f3ed25fa96391623fc344f8b5752a38e7

SHA256
58e154bd8bfc62aecbe266d232d14f5fe930567f364939b00fb6f68c3f87e8c3

SHA512
c2c61aee38951ba362e646d3ae7344857c3678fa35343e195ed31ce810efd5a66f976b71ee6435cf5c61f90a816345687ce0ab9500b5500b7b5d8a0e48202068

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
3ac2585cf4f0ceab0487514dd281bae7

SHA1
9c873e1f3ed25fa96391623fc344f8b5752a38e7

SHA256
58e154bd8bfc62aecbe266d232d14f5fe930567f364939b00fb6f68c3f87e8c3

SHA512
c2c61aee38951ba362e646d3ae7344857c3678fa35343e195ed31ce810efd5a66f976b71ee6435cf5c61f90a816345687ce0ab9500b5500b7b5d8a0e48202068

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
3ac2585cf4f0ceab0487514dd281bae7

SHA1
9c873e1f3ed25fa96391623fc344f8b5752a38e7

SHA256
58e154bd8bfc62aecbe266d232d14f5fe930567f364939b00fb6f68c3f87e8c3

SHA512
c2c61aee38951ba362e646d3ae7344857c3678fa35343e195ed31ce810efd5a66f976b71ee6435cf5c61f90a816345687ce0ab9500b5500b7b5d8a0e48202068

Download Submit
C:\Program Files (x86)\Microsoft SQL Server\SQLSerasi.exe

Filesize
39.4MB

MD5
3ac2585cf4f0ceab0487514dd281bae7

SHA1
9c873e1f3ed25fa96391623fc344f8b5752a38e7

SHA256
58e154bd8bfc62aecbe266d232d14f5fe930567f364939b00fb6f68c3f87e8c3

SHA512
c2c61aee38951ba362e646d3ae7344857c3678fa35343e195ed31ce810efd5a66f976b71ee6435cf5c61f90a816345687ce0ab9500b5500b7b5d8a0e48202068

Download Submit
memory/2456-175-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/2456-172-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4236-173-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4236-174-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4624-149-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4624-152-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4624-158-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4624-156-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/4624-153-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4840-154-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/4840-155-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5100-132-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5100-133-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/5100-136-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/5100-143-0x0000000000400000-0x0000000000469000-memory.dmp

Filesize
420KB

Download
memory/5100-137-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download
memory/5100-138-0x0000000010000000-0x0000000010362000-memory.dmp

Filesize
3.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v6

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Downloads

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