farfli | 270f5a662e04ce739f1e9b3bd6ef436014033d8560701cacaef22897d9d72361

Analysis

max time kernel
149s
max time network
141s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
08/06/2026, 14:48

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General

Target
2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe
Size 103KB
Sample260608-r6n7rags21
SHA256 270f5a662e04ce739f1e9b3bd6ef436014033d8560701cacaef22897d9d72361
MD5 2411aae3c7c17acdb77244556c8d83cd
SHA1 787be158f73fdbb3c220b2e783489ffb5ab13413
SHA512 da3d3df97babf7b38478a5bda73903b47ae340fdf4cd8152bfca59cc7d0093d864ad955d2335ce07225116c7baba82124c3c54d8a197bbf243af52fe00ea2eb5
SSDEEP 1536:gWCfpn0RbXfmvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMywb:gWmpn0RbXNxeeJ9w7EPWMywb
TLSH
T145A3BF576BAF04FAD1200D7504BA1B7647BA64562B205BBBC394EC2DA872DC0EC3D35B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

host123.zz.am:6658
http://23.104.160.115:8890/version.php
http://23.104.160.116:9963/

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 4 IoCs

resource	yara_rule
behavioral2/memory/1884-10-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1884-9-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1884-11-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1884-13-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/1884-10-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1884-9-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1884-11-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1884-13-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 3 IoCs

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

flow	pid	Process
1	1884	rundll32.exe
4	1884	rundll32.exe
3	1884	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
1932	nguamnd.exe

Loads dropped DLL 1 IoCs

pid	Process
1884	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-1-5-21-1636999435-3883760687-346127294-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rogvzbir\\seywg.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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	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
2884	1884	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nguamnd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.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
1704	cmd.exe
3744	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3744	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2984	2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe
1932	nguamnd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 1704	2984	2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe	80
PID 1704 wrote to memory of 3744	1704	cmd.exe	82
PID 1704 wrote to memory of 1932	1704	cmd.exe	83
PID 1932 wrote to memory of 1884	1932	nguamnd.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\nguamnd.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1704
- - 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:3744
- - \??\c:\nguamnd.exe
    c:\nguamnd.exe "C:\Users\Admin\AppData\Local\Temp\2026-06-08_2411aae3c7c17acdb77244556c8d83cd_elex_feodo_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1932
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\rogvzbir\seywg.dll",AbortProc c:\nguamnd.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
      Checks processor information in registry
      Suspicious use of AdjustPrivilegeToken
      PID:1884
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1884 -s 1532
        5⤵
        Program crash
        
        PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1884 -ip 1884
1⤵
PID:3360

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

nguamnd.exe

Path C:\nguamnd.exe
Size 103KB
SHA256 65beecbde7ca2713d2cad0ae4dac731b5ddd95b6983c2e2739e10339210d5388
MD5 be0934c0f63f3dbd17748a0cd6fc0d10
SHA1 434eab8970146ecedfa272d43056b6d335e9c2fe
SHA512 4cfa1a6e41e50482e9462cee1a5044ffa544c0c7e9f186c14bd4d8be68cc1c61900147de5071856478c3637fea61e0c05241ad6a431278357a660b83012c349e
SSDEEP 1536:gWCfpn0RbXfmvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMywX:gWmpn0RbXNxeeJ9w7EPWMywX
TLSH
T11DA3B0176BAF04F6E0200D7505BA1B3647BA68562B205BB7D394ED1DA872DC0EC3D35B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

seywg.dll

Path \??\c:\rogvzbir\seywg.dll
Size 60KB
SHA256 42304221991ff2ea9d6c0252d42b90390caebc312a17126a4b13e9514f2b7d87
MD5 75e08aa9274df390fcdb1df3d0733bd5
SHA1 f3053cc10f33436aa1da7ec82a12ffdaff10ccfb
SHA512 dee8a07ca2142eb2ec1a5ce56af92605bb1c11e89da5d4335aee1098dc73375e422d9c53f201e571ff64b51c5cfa3928b1f26c0a23f4671dfbd91b1355d0e9db
SSDEEP 1536:Itj4HbqT+M0L2J2US62eSBQno/CUVzsxeOPw:ItqeT+M02J25qnLUVzs9w
TLSH
T1D05301286F6D2EDDFA3152B1E0985093FBD98B03043FA24D2544777F7D829631A93BA4
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1884-7-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1884-10-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1884-9-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1884-8-0x0000000000A20000-0x0000000000A21000-memory.dmp

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memory/1884-11-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1884-12-0x0000000000A20000-0x0000000000A21000-memory.dmp

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memory/1884-13-0x0000000010000000-0x0000000010045000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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