farfli | e6c79934f66a65ec4be708686eded0b22f829c54bb3a403c85e70a2cb9c43441

Analysis

max time kernel
149s
max time network
95s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
23/05/2026, 22:11

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General

Target
2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe
Size 160KB
Sample260523-14bcjsbt8j
SHA256 e6c79934f66a65ec4be708686eded0b22f829c54bb3a403c85e70a2cb9c43441
MD5 d8afb72c7ace0a87da7400b82baed6eb
SHA1 3de7a40079d8eb4c1e29e8df002507070002bdac
SHA512 97b0d847a6b961baacbf6c983429cfb488cfe47bd06e3430172bf663a65a4381cf92b39ab2b541ac77f9dd173b71d3f6baade17282cfc458ce2804fbba1fdf03
SSDEEP 1536:fli0XaKn5gYkqDqgEeEHgUyQLrdcUcsA08IzYJzKsoVXOeqD7hi/x0rTE86mwYUi:di0XaKncqY31L2WXb0E86mwYUi
TLSH
T1F8F37C26E7A58542E3B24F7046A35B63AF71FC145AED8B4F7740A35E9838F00ED29364
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

67.229.62.194:3201
http://67.229.62.197:805/index.php
http://67.229.62.198:803/

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

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 5 IoCs

resource	yara_rule
behavioral2/memory/3020-14-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/3020-15-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/3020-13-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/3020-16-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli
behavioral2/memory/3020-18-0x0000000010000000-0x0000000010036000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral2/memory/3020-14-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3020-15-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3020-13-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3020-16-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3020-18-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
1	3020	rundll32.exe
3	3020	rundll32.exe
4	3020	rundll32.exe
5	3020	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x001c00000002b3b9-10.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
4440	peurd.exe

Executes dropped EXE 1 IoCs

pid	Process
4440	peurd.exe

Loads dropped DLL 1 IoCs

pid	Process
3020	rundll32.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-1-5-21-2043432456-1617298091-2772621413-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\qhqntykh\\ddwjgy.dll\",AbortProc"	rundll32.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:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.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	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2308	3020	WerFault.exe	84

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	2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_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	peurd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
804	cmd.exe
4040	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4040	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3020	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3744	2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe
4440	peurd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3744 wrote to memory of 804	3744	2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe	80
PID 804 wrote to memory of 4040	804	cmd.exe	82
PID 804 wrote to memory of 4440	804	cmd.exe	83
PID 4440 wrote to memory of 3020	4440	peurd.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3744
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\peurd.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:804
- - 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:4040
- - \??\c:\peurd.exe
    c:\peurd.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-23_d8afb72c7ace0a87da7400b82baed6eb_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4440
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\qhqntykh\ddwjgy.dll",AbortProc c:\peurd.exe
      4⤵
      Badlisted process makes network request
      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:3020
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 1604
        5⤵
        Program crash
        
        PID:2308

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3020 -ip 3020
1⤵
PID:3600

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

peurd.exe

Path C:\peurd.exe
Size 160KB
SHA256 7d9de457d48522ad6b03cacb6c7a5adc59714729482e4c79fb073d7c4ce1bb27
MD5 1f534b118215194391791cd738810732
SHA1 23bae57c8e79c7efe823c1431bc79dbb8640e979
SHA512 247cf4488f90f01a3d20826b481e69d8095ebfe9541b1492d9ce75aa0f88638100ea662b493b1ffe02d759b781aaea49ad5add3b3ab553a367ae84426b7cb06d
SSDEEP 1536:fli0XaKn5gYkqDqgEeEHgUyQLrdcUcsA08IzYJzKsoVXOeqD7hi/x0rTE86mwYUa:di0XaKncqY31L2WXb0E86mwYUiR
TLSH
T1FBF37C26E7A58542E3B24F7046A35B63AF71FC145AED8B4F7740A35E9838F00ED29364
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ddwjgy.dll

Path \??\c:\qhqntykh\ddwjgy.dll
Size 87KB
SHA256 37ab4b7ee8f6b61c3854af4ed4676fd0d69f0260fb1296ad75e57aa08e1eeb03
MD5 a2c2137ff7abf6be6bcae4252c394a69
SHA1 07b402104df563f9486c2eef975fee70f65a5145
SHA512 5d05ed7c55bee8f41502acaea3d41fcf4421ad641d43f0b97b4cdc8fe584983da7712c561a53b708e88391df7929914746115700ae733155418693bcec6989a9
SSDEEP 1536:Z9f99U7uHXjIdqsxng0ZsiG4gYV82mwx86aY1Enb0jv4WDBT:bfTVHXEdqRYu2mwxB11EbiT1
TLSH
T10B93E08EBFD80A7FC6BF123244A7D636D2723C117B199D5231DE8E1F38561096B0A768
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3020-12-0x0000000010000000-0x0000000010036000-memory.dmp

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memory/3020-14-0x0000000010000000-0x0000000010036000-memory.dmp

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memory/3020-15-0x0000000010000000-0x0000000010036000-memory.dmp

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memory/3020-13-0x0000000010000000-0x0000000010036000-memory.dmp

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memory/3020-16-0x0000000010000000-0x0000000010036000-memory.dmp

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memory/3020-18-0x0000000010000000-0x0000000010036000-memory.dmp

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memory/3744-3-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3744-1-0x0000000000405000-0x0000000000406000-memory.dmp

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memory/3744-0-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4440-7-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/4440-9-0x0000000000400000-0x0000000000428000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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