gh0strat | 75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac

Analysis

max time kernel
148s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 14:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe
Size

106KB
MD5

618dbca37462a4191d5f01fdce385630
SHA1

2c45c955f4933a27e1b625ac0250daa0e1d016f8
SHA256

75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac
SHA512

947aa33cd975c10a0ea920a1c95319a82ba43a81b3b842e70fe1821847880ee222441877da63cd4ea6c9cdce573443a7d58494346e4e83695c1162436bf05d5a
SSDEEP

3072:46JR+uNAEaC3KtYlG4tOLjnUKfBjzLcu+SRokqWQz:4gZNATdYlG4AnU2vrPQ

Score

10^/10

gh0strat persistence rat

Malware Config

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral2/files/0x000b000000022e03-133.dat	family_gh0strat
behavioral2/files/0x000b000000022e03-134.dat	family_gh0strat
behavioral2/memory/4968-135-0x0000000000400000-0x000000000041D520-memory.dmp	family_gh0strat
behavioral2/files/0x0007000000022e0d-136.dat	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 1 IoCs

pid	Process
4968	server.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet003\Services\BITS\Parameters\ServiceDll = "C:\\Windows\\system32\\bits.dll"	server.exe

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	75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe

Loads dropped DLL 1 IoCs

pid	Process
4968	server.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\bits.dll	server.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4968	server.exe
4968	server.exe
4968	server.exe
4968	server.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3392 wrote to memory of 4968	3392	75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe	83
PID 3392 wrote to memory of 4968	3392	75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe	83
PID 3392 wrote to memory of 4968	3392	75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe	83

C:\Users\Admin\AppData\Local\Temp\75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe
"C:\Users\Admin\AppData\Local\Temp\75675bd7a0128edbde98a898306f88c00b25e1b6d2f7b7ae090c87240197fcac.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3392
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:4968

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
PID:4840

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
117KB

MD5
1abfd0abb2ae9134c60bad818e6c4271

SHA1
7ba01ec9903b794c68adb493654c59418a5632df

SHA256
6c94cfb7064f68671619572a41f8c2092ec428dc1c9b00fc0793db1af63fde36

SHA512
69a7de8c5a6fdde928c5d407889bfb10fb0be1e6829a4019ed52648fce983838b16afe3c5b5fddb36b0a327336d241b64c86f724829de6b7ba1898529dc84bc6

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

Filesize
117KB

MD5
1abfd0abb2ae9134c60bad818e6c4271

SHA1
7ba01ec9903b794c68adb493654c59418a5632df

SHA256
6c94cfb7064f68671619572a41f8c2092ec428dc1c9b00fc0793db1af63fde36

SHA512
69a7de8c5a6fdde928c5d407889bfb10fb0be1e6829a4019ed52648fce983838b16afe3c5b5fddb36b0a327336d241b64c86f724829de6b7ba1898529dc84bc6

Download Submit
C:\Windows\SysWOW64\bits.dll

Filesize
103KB

MD5
ec3e5f0b2f132bf6864bfa00e5bbf532

SHA1
4afe87c83ab0be05aa8b9cd7a1677e221d32b979

SHA256
91819a4a2a1aea1987c7b30558a907fe0f1f2de01af7988f2d253ab904aee4a8

SHA512
0257a3544aac032ebd23c1dee03b4aff789d48ea332f45ddf4f8c92f4e6cff7190835e8d6fbe3355d70bbffe232642a88fa0be9406f153a31e3035596232f17c

Download Submit
memory/4840-137-0x0000019308340000-0x0000019308350000-memory.dmp

Filesize
64KB

Download
memory/4840-138-0x00000193083A0000-0x00000193083B0000-memory.dmp

Filesize
64KB

Download
memory/4840-139-0x000001930B2C0000-0x000001930B2C4000-memory.dmp

Filesize
16KB

Download
memory/4840-140-0x000001930B580000-0x000001930B584000-memory.dmp

Filesize
16KB

Download
memory/4840-141-0x000001930B2F0000-0x000001930B2F4000-memory.dmp

Filesize
16KB

Download
memory/4840-142-0x000001930B2E0000-0x000001930B2E4000-memory.dmp

Filesize
16KB

Download
memory/4968-135-0x0000000000400000-0x000000000041D520-memory.dmp

Filesize
117KB

Download