gh0strat | 3b75334de4798eea48c2b47180c6d059821ba5cbb46f74b8b060e230dba245a4

Analysis

max time kernel
182s
max time network
194s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 21:58

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General

Target

3b75334de4798eea48c2b47180c6d059821ba5cbb46f74b8b060e230dba245a4.dll
Size

702KB
MD5

52c05bd4dcd33aae52fa663a38c72cc0
SHA1

9d52ade35495b8ed1eff7d4e690322152f45b31d
SHA256

3b75334de4798eea48c2b47180c6d059821ba5cbb46f74b8b060e230dba245a4
SHA512

1b537092cba58cc61d6ca41af33e1ab4a20f07f49a85de7e07a6ca4ee2d42cdb9780c7410fd25f3de10dd114133ff95d62c23e34049b5e1141476d4277daf066
SSDEEP

12288:YgIn6s/NFLEs3IOcwKs/rs9aaVBTlm64fPtA+AfbOIEH/WRep8KKJv34:YdJjIOcwKs/r8lm6L+vz/eepPy

Score

10^/10

gh0strat purplefox persistence rat rootkit trojan upx

Malware Config

Signatures

Detect PurpleFox Rootkit 2 IoCs

Detect PurpleFox Rootkit.

rootkit

Processes:

resource	yara_rule
behavioral2/memory/4548-133-0x0000000002E90000-0x0000000003036000-memory.dmp	purplefox_rootkit
behavioral2/memory/4548-139-0x0000000010000000-0x0000000010169000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4548-133-0x0000000002E90000-0x0000000003036000-memory.dmp	family_gh0strat
behavioral2/memory/4548-139-0x0000000010000000-0x0000000010169000-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
PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

18 4548 rundll32.exe
48 4548 rundll32.exe

flow	pid	process
18	4548	rundll32.exe
48	4548	rundll32.exe

UPX packed file 1 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4548-139-0x0000000010000000-0x0000000010169000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Éù¿¨Çý¶¯ = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4728 wrote to memory of 4548	4728	rundll32.exe	rundll32.exe
PID 4728 wrote to memory of 4548	4728	rundll32.exe	rundll32.exe
PID 4728 wrote to memory of 4548	4728	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b75334de4798eea48c2b47180c6d059821ba5cbb46f74b8b060e230dba245a4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4728

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3b75334de4798eea48c2b47180c6d059821ba5cbb46f74b8b060e230dba245a4.dll,#1
2⤵
- Blocklisted process makes network request
- Adds Run key to start application
PID:4548

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4548-132-0x0000000000000000-mapping.dmp

Download
memory/4548-133-0x0000000002E90000-0x0000000003036000-memory.dmp

Filesize
1.6MB

Download
memory/4548-139-0x0000000010000000-0x0000000010169000-memory.dmp

Filesize
1.4MB

Download