farfli | ba5447d0e633c71238878b99ce366cc2d11c029641107091dd25062be455fcc9

Analysis

max time kernel
149s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
04/05/2026, 16:41

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General

Target
2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe
Size 337KB
Sample260504-t7capaby5p
SHA256 ba5447d0e633c71238878b99ce366cc2d11c029641107091dd25062be455fcc9
MD5 2ada4b9f36777f102c166acafd5c895e
SHA1 81c6e00b7ec6a93e3960b00294843e52e458bf75
SHA512 6ecc0efdb6301a324895a7c6afe065e670c09411dd3e28c4d646153f4c85bd1c5a3d9c725720ab8e717e7025e8ab9fa7f233ac2b0485272749ca7fa6845d7879
SSDEEP 6144:bhBq6X2tzs/l0HdEezbOGijPwZFvP+TTRLxpxUzdjK8sp:fq6X2tgd4VZBg8k8G
TLSH
T11274D06231D1C8A9C4C47633CD6DB7F4D7E9CEA8893D8A7B779B3E08EA379444205261
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

107.163.56.251:6658
http://107.163.56.238:18530/
http://107.163.56.239:18963/main.php

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli
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

Detects Farfli Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/4088-17-0x0000000010000000-0x0000000010089000-memory.dmp	family_farfli
behavioral2/memory/4088-20-0x0000000010000000-0x0000000010089000-memory.dmp	family_farfli
behavioral2/memory/4088-21-0x0000000010000000-0x0000000010089000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/4088-17-0x0000000010000000-0x0000000010089000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4088-20-0x0000000010000000-0x0000000010089000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4088-21-0x0000000010000000-0x0000000010089000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Detects executables packed with VMProtect. 5 IoCs

resource	yara_rule
behavioral2/memory/4144-0-0x0000000000400000-0x0000000000452000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4144-1-0x0000000000400000-0x0000000000452000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/4144-3-0x0000000000400000-0x0000000000452000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/files/0x000e0000000262c0-6.dat	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/2468-13-0x0000000000400000-0x0000000000452000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Deletes itself 1 IoCs

pid	Process
2468	mphfc.exe

Executes dropped EXE 2 IoCs

pid	Process
2468	mphfc.exe
4088	ochko.exe

Loads dropped DLL 1 IoCs

pid	Process
4088	ochko.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2397528088-2630719772-1129911217-1000\Software\Microsoft\Windows\CurrentVersion\Run\ECO = "c:\\Program Files\\fbhzgyuo\\ochko.exe \"c:\\Program Files\\fbhzgyuo\\ochko.dll\",EnumClassObjects"	ochko.exe

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\b:	ochko.exe
File opened (read-only)	\??\a:	ochko.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	ochko.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\fbhzgyuo	mphfc.exe
File created	\??\c:\Program Files\fbhzgyuo\ochko.dll	mphfc.exe
File created	\??\c:\Program Files\fbhzgyuo\ochko.exe	mphfc.exe
File opened for modification	\??\c:\Program Files\fbhzgyuo\ochko.exe	mphfc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5448	4088	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 5 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	2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mphfc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ochko.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2284	cmd.exe
2032	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2032	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4088	ochko.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4144	2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe
2468	mphfc.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4144 wrote to memory of 2284	4144	2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe	79
PID 2284 wrote to memory of 2032	2284	cmd.exe	81
PID 2284 wrote to memory of 2468	2284	cmd.exe	82
PID 2468 wrote to memory of 4088	2468	mphfc.exe	83

C:\Users\Admin\AppData\Local\Temp\2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4144
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mphfc.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2032
- - C:\Users\Admin\AppData\Local\Temp\mphfc.exe
    C:\Users\Admin\AppData\Local\Temp\\mphfc.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-04_2ada4b9f36777f102c166acafd5c895e_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2468
  - - \??\c:\Program Files\fbhzgyuo\ochko.exe
      "c:\Program Files\fbhzgyuo\ochko.exe" "c:\Program Files\fbhzgyuo\ochko.dll",EnumClassObjects C:\Users\Admin\AppData\Local\Temp\mphfc.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:4088
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4088 -s 1684
        5⤵
        Program crash
        
        PID:5448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4088 -ip 4088
1⤵
PID:3924

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

ochko.dll

Path C:\Program Files\fbhzgyuo\ochko.dll
Size 197KB
SHA256 9b1adcbf32c947043cd594eced61c570cf77b3ec6bc350bb04c1700e4cdc7e35
MD5 1056ddef7d1aca0c0677efd9efd93c14
SHA1 7d7b40d4928521bb39997f4016b9f042cc74adcd
SHA512 1dfdb40e4a7accd8eb1e6863edf0468a3c39ef2693c3b66ad1b074b0fe46e5259c1c272bbd8f8197643f25a18d72d279aee451734da0b0ae7300a9089fd502a4
SSDEEP 3072:ruc9Y8cZZ/jkk+2FsQAF3jY0gd2mINCTrhcObieOBdq3D143a5gUpP+:m8cZRi2FxAFc0VxNCTmONO+h4K5gim
TLSH
T1291402C1DBF10372D45F0B314A320D3A7972D8D894888B6AD289D29F6C7BDA9235D369
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ochko.exe

Path C:\Program Files\fbhzgyuo\ochko.exe
Size 40KB
SHA256 8dcaeeebef9b9f3d41d295db145ffb3850f309d089c08125c7fa7034db5fd80e
MD5 22bb5bd901d8b25ac5b41edbb7d5053e
SHA1 8a935dd8d7e104fc553ff7e8b54a404f7b079334
SHA512 cc3fb68fd6791a08e4a7d1a8db8d07cfcc8c9b9dceec10b53f0cb7ee86473303a19be4f23e379f84c59e02d0568e7c066e21cd1300f6032dac4ba52f609f62e7
SSDEEP 768:C67uhQpPPp0nnqFk509FRdVcQX6N58hJYim1jLP3RRe:C67uhQpXp0nnqa5093jKNAmB3RR
TLSH
T10C134C02BE88C071DDA114B41A5DB337939DED604B1586D3593887EBAA2D3E39E343DE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mphfc.exe

Path C:\Users\Admin\AppData\Local\Temp\mphfc.exe
Size 337KB
SHA256 727fb6c786a7eea529a3225ee7eac4484852716397261225f29790a6f64deb67
MD5 21f72bdbde79e0ff01ff79541f6d1f0c
SHA1 fdf4f6b36f893322ca7193108d9a8c37e361cd41
SHA512 1ec9e9303d1cd691b6bfbff24bdf9d15eb501db189b907141f1b4c80646c18484d1f7a3f9756fc4030646962e8b55a075c004f108e78ea299eedf251ce636e61
SSDEEP 6144:bhBq6X2tzs/l0HdEezbOGijPwZFvP+TTRLxpxUzdjK8s/:fq6X2tgd4VZBg8k84
TLSH
T18174D06231D1C8A9C4C47633CD6DB7F4D7E9CEA8893D8A7B779B3E08EA379444205261
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2468-13-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/4088-16-0x0000000010000000-0x0000000010089000-memory.dmp

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memory/4088-17-0x0000000010000000-0x0000000010089000-memory.dmp

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memory/4088-20-0x0000000010000000-0x0000000010089000-memory.dmp

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memory/4088-21-0x0000000010000000-0x0000000010089000-memory.dmp

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memory/4144-0-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/4144-1-0x0000000000400000-0x0000000000452000-memory.dmp

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memory/4144-3-0x0000000000400000-0x0000000000452000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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