gh0strat | 8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303

Analysis

max time kernel
140s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-09-2024 09:55

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General

Target

8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe
Size

133KB
MD5

395bb7ea9944773809df27b69422d67b
SHA1

0c422257fa0917e4e176a74dc46f059abc8859f4
SHA256

8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303
SHA512

12ef46e547db9a13969300e7a4723aa0ab4f99229f68c528c140f0da8967267dea65004306b9b63476612567bc3103e4b6bb273f2162f3a06f2a1d6912e61d64
SSDEEP

3072:6yIpG2/iDbYvGY4/BL/MDOw//5zzDVL7Jjk/dR8iV:rIposOpwJzzi8iV

Score

10^/10

gh0strat discovery rat upx

Malware Config

Extracted

Family

gh0strat

10.111.253.140

Signatures

Gh0st RAT payload 4 IoCs

resource	yara_rule
behavioral1/memory/1876-1-0x0000000010000000-0x0000000010015000-memory.dmp	family_gh0strat
behavioral1/memory/2804-15-0x0000000000400000-0x000000000046D000-memory.dmp	family_gh0strat
behavioral1/memory/2820-19-0x0000000000400000-0x000000000046D000-memory.dmp	family_gh0strat
behavioral1/memory/1876-20-0x0000000000400000-0x000000000046D000-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
2804	Cxmkrzh.scr
2820	Cxmkrzh.scr

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1876-0-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2804-15-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/2820-19-0x0000000000400000-0x000000000046D000-memory.dmp	upx
behavioral1/memory/1876-20-0x0000000000400000-0x000000000046D000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Cxmkrzh.scr	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe
File opened for modification	C:\Program Files (x86)\Cxmkrzh.scr	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	Cxmkrzh.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Cxmkrzh.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1876	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe
1876	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe
1876	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe
2804	Cxmkrzh.scr
2804	Cxmkrzh.scr
2804	Cxmkrzh.scr
2820	Cxmkrzh.scr
2820	Cxmkrzh.scr
2820	Cxmkrzh.scr

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1876	8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2820	2804	Cxmkrzh.scr	31
PID 2804 wrote to memory of 2820	2804	Cxmkrzh.scr	31
PID 2804 wrote to memory of 2820	2804	Cxmkrzh.scr	31
PID 2804 wrote to memory of 2820	2804	Cxmkrzh.scr	31

C:\Users\Admin\AppData\Local\Temp\8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe
"C:\Users\Admin\AppData\Local\Temp\8473d4b398a72605f8cfbffbc45709f9267a173208cb8814caba98b4d8c53303.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
PID:1876

C:\Program Files (x86)\Cxmkrzh.scr
"C:\Program Files (x86)\Cxmkrzh.scr"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Program Files (x86)\Cxmkrzh.scr
  "C:\Program Files (x86)\Cxmkrzh.scr" Win7
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1876-0-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1876-1-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/1876-20-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2804-15-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2820-19-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download