gh0strat | 87b776b386b0815fea7cb8b3ac9c1261bd7f1ccfa2a84c05c171131ad905f07e

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/10/2026, 17:34

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General

Target
87b776b386b0815fea7cb8b3ac9c1261bd7f1ccfa2a84c05c171131ad905f07e.dll
Size 1.5MB
Sample261005-v5f2jayeqh
SHA256 87b776b386b0815fea7cb8b3ac9c1261bd7f1ccfa2a84c05c171131ad905f07e
MD5 6bed58ca03a5688604d1a5b95bef5a9a
SHA1 e3b29f1113d76bbc58bf478660ccfb6d7a4ec6c1
SHA512 cf483678d6a47362da94d456e9de5a95e8448f037be206fc5e0158f821b533804748f87a5681cede32848194162720896d052ae2cff08b1ee602b5d7bff80211
SSDEEP 24576:7MfywgIt/65Fu99573/aiVIOYrFzpCM5hyv3m8AMtRyce0LCOK0B:l49rJ
TLSH
T129755C83F2B64CE3CBD40034EC6AD2767B34791D93FB86737240DAD6B5A6690792035A
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/2692-0-0x0000000010000000-0x00000000101B6000-memory.dmp	purplefox_rootkit

Gh0st RAT payload 1 IoCs

resource	yara_rule
behavioral2/memory/2692-0-0x0000000010000000-0x00000000101B6000-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/2692-0-0x0000000010000000-0x00000000101B6000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1840	2692	WerFault.exe	89

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 4560 wrote to memory of 2692	4560	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\87b776b386b0815fea7cb8b3ac9c1261bd7f1ccfa2a84c05c171131ad905f07e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\87b776b386b0815fea7cb8b3ac9c1261bd7f1ccfa2a84c05c171131ad905f07e.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2692 -s 460
    3⤵
    - Program crash
    PID:1840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2692 -ip 2692
1⤵
PID:3840

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/2692-0-0x0000000010000000-0x00000000101B6000-memory.dmp

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