gh0strat | b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535

Analysis

max time kernel
157s
max time network
53s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29-11-2022 14:03

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General

Target

b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe
Size

167KB
MD5

39e1fe7316885d7b8322f5e5739484aa
SHA1

c7889057dc01d79571d82473db3cb551121893f4
SHA256

b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535
SHA512

02d17d482996b40e54785bb1742cf72e3653db544bef4d390a64e7e40d50cedab3dbdf9737107cf471a1463731e98aea048a0795bdf5b591960049493a1de9b8
SSDEEP

3072:DoUGzRVHgCcnV5j9j0lvil2NnGfNGHqRy1zkeS1FpTa3q5tJH9BY/s9:LGzRxSVtp0l6whGfsKR+zkBpTaa5tJH7

Score

10^/10

gh0strat persistence rat upx

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/1872-59-0x0000000000400000-0x00000000004F0000-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 1 IoCs

pid	Process
1872	(null)0.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1256-54-0x0000000000400000-0x00000000004F0000-memory.dmp	upx
behavioral1/files/0x00080000000152c0-57.dat	upx
behavioral1/memory/1872-59-0x0000000000400000-0x00000000004F0000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe"	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	\??\c:\Windows\BJ.exe	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe
File opened for modification	\??\c:\Windows\BJ.exe	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe
File created	\??\c:\Windows\(null)0.exe	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 1872	1256	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe	26
PID 1256 wrote to memory of 1872	1256	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe	26
PID 1256 wrote to memory of 1872	1256	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe	26
PID 1256 wrote to memory of 1872	1256	b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe	26

C:\Users\Admin\AppData\Local\Temp\b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe
"C:\Users\Admin\AppData\Local\Temp\b4160fda2f0edc44fb646db2d609876382afc0fa78b5be047533802f5fcb7535.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1256
- \??\c:\Windows\(null)0.exe
  c:\Windows\(null)0.exe
  2⤵
  - Executes dropped EXE
  PID:1872

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\(null)0.exe

Filesize
167KB

MD5
d77ccf7b3fc7fcf01cae17078bee2c29

SHA1
3434ac13a29557614358156a20ad69a47411bfd0

SHA256
5427b869d348f620c1371f02c894c323ffb27dd5cac6f18dde604bc93cd2a0bd

SHA512
11977ed8a4e0019bdd62f17f713d013c2881278c9f429ea2f19e2a74d9da2692b22711b48a8f4b8870a04220e667630d9bcdf77a58e49afbbf8dd91e9868cdad

Download Submit
memory/1256-54-0x0000000000400000-0x00000000004F0000-memory.dmp

Filesize
960KB

Download
memory/1256-55-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1256-60-0x0000000000710000-0x0000000000800000-memory.dmp

Filesize
960KB

Download
memory/1872-56-0x0000000000000000-mapping.dmp

Download
memory/1872-59-0x0000000000400000-0x00000000004F0000-memory.dmp

Filesize
960KB

Download