gh0strat | 1fb9d857fc2fe334a9564ff3564fb3979a18e779c277bd2ee98143396ddf393e

Analysis

max time kernel
149s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
20/04/2026, 05:50

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General

Target
1fb9d857fc2fe334a9564ff3564fb3979a18e779c277bd2ee98143396ddf393e.dll
Size 1.5MB
Sample260420-gjqryset2x
SHA256 1fb9d857fc2fe334a9564ff3564fb3979a18e779c277bd2ee98143396ddf393e
MD5 a7d2801a13f38987313b67b6d6200044
SHA1 ab7585953662c9173cf2052aa86c389ab8fca765
SHA512 b056cc8e93f02fad7179f60c5a96ebef3f3cfac5d281f454134555f689bc61774cc127a2d497ec16ecfc14cbb650dd9489dafed7c833bdb0a2a3a0167be6adff
SSDEEP 24576:7MfywgIt/65Fu99573/aiVIOYrFzpCM5hyv3m8AMtRyce0LCOK0B:l49rJ
TLSH
T158755C83F2B64CE3CBD40034EC6AD2767B34791D93FB86737240DAD6B5A6690792035A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery gh0strat purplefox rat rootkit trojan upx

Malware Config

Signatures

Family: 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
Family: PurpleFox
PurpleFox is an exploit kit used to distribute other malware families and first seen in 2018.
rootkit trojan purplefox

Detect PurpleFox Rootkit 1 IoCs

Detect PurpleFox Rootkit.

rootkit

resource	yara_rule
behavioral2/memory/1620-0-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000010000000-0x00000000101B6000-memory.dmp	family_gh0strat

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1620-0-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1824	1620	WerFault.exe	80

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 1620	3240	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1fb9d857fc2fe334a9564ff3564fb3979a18e779c277bd2ee98143396ddf393e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1fb9d857fc2fe334a9564ff3564fb3979a18e779c277bd2ee98143396ddf393e.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1620
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 400
    3⤵
    - Program crash
    PID:1824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 1620 -ip 1620
1⤵
PID:3536

Network

MITRE ATT&CK Enterprise v16

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

Replay Monitor

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Downloads

memory/1620-0-0x0000000010000000-0x00000000101B6000-memory.dmp

Download

memory/1620-1-0x00000000012C0000-0x00000000012C6000-memory.dmp