gh0strat | 792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba

Analysis

max time kernel
188s
max time network
73s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 14:04

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General

Target

792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe
Size

350KB
MD5

54fdd65c3118c9b6b3d1515940a383f6
SHA1

cbd95fcb1ae9f7265063d8d193c541c422395594
SHA256

792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba
SHA512

9df1b91b8c85ace67af4c8d55ae5dff72b49fbfd3d8d7376d57472c052b836a381d25b4de192179997daa658451705602c03aea17d206af2b5a9ef17d5073246
SSDEEP

6144:QGzRxSVtp0l6whGfsKR+zkBpTaa5tJHXF:jt0VPFfsKAkrbPlXF

Score

10^/10

gh0strat persistence rat upx

Malware Config

Signatures

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral1/memory/1712-59-0x0000000000400000-0x00000000004F1000-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
1712	(null)0.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/844-55-0x0000000000400000-0x00000000004F1000-memory.dmp	upx
behavioral1/files/0x000a000000012300-57.dat	upx
behavioral1/memory/1712-59-0x0000000000400000-0x00000000004F1000-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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe"	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	\??\c:\Windows\BJ.exe	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe
File opened for modification	\??\c:\Windows\BJ.exe	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe
File created	\??\c:\Windows\(null)0.exe	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 1712	844	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe	28
PID 844 wrote to memory of 1712	844	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe	28
PID 844 wrote to memory of 1712	844	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe	28
PID 844 wrote to memory of 1712	844	792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe	28

C:\Users\Admin\AppData\Local\Temp\792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe
"C:\Users\Admin\AppData\Local\Temp\792ebaf71eecbed1ad4447af25522b393662e17d1500a93354b7f5c20d7088ba.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:844
- \??\c:\Windows\(null)0.exe
  c:\Windows\(null)0.exe
  2⤵
  - Executes dropped EXE
  PID:1712

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
350KB

MD5
899e95584d173d8bf1b0ab91ab3d8b05

SHA1
a8b10caa392217f25d7f48e6e441b494cc517ac1

SHA256
ac538ef93b92bd3324925f86024b634faed83043a600d3a96ce967b3f1566c6b

SHA512
956ef3c578308298a905205e742823d1840c428985e792bd3c3fd39ed8786070eb6bc12c2ff42d1eb5708351bb47015d35cd29fbba9c329f5a343505a3822207

Download Submit
memory/844-54-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download
memory/844-55-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download
memory/844-60-0x0000000002550000-0x0000000002641000-memory.dmp

Filesize
964KB

Download
memory/1712-59-0x0000000000400000-0x00000000004F1000-memory.dmp

Filesize
964KB

Download