farfli | c0e9e77d739ac250752fe06eefb70330da2f7fc6808066f82f005c64afb4c8c2

General

Target
2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe
Size 119KB
Sample260715-ls996scv91
SHA256 c0e9e77d739ac250752fe06eefb70330da2f7fc6808066f82f005c64afb4c8c2
MD5 82c857a85c596cf6e6221d834e315c42
SHA1 29448344d012fa4ff828292cb298dd0a148644da
SHA512 d79cf1b921f09ee88a429066c27c671c6428093dadc2cbe2e8b534a79920ced89fd198b5f2d182abe0d660545ac937581252f26a690390f78ce848b4489b86af
SSDEEP 1536:QaaczXhtqkUlX/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJnddI3GMb0:la7qc9rqzMseNoVv9EJFdXMb0
TLSH
T126C3160663E6C584F1B20B30CA3646F04A7BBCA9F970925F17407E5EBD31A55AD21B37
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 4 IoCs

resource	yara_rule
behavioral2/memory/4768-7-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/4768-6-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/4768-9-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/4768-8-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4768-6-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4768-8-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
1	4768	rundll32.exe
4	4768	rundll32.exe
6	4768	rundll32.exe
5	4768	rundll32.exe
7	4768	rundll32.exe
8	4768	rundll32.exe
10	4768	rundll32.exe
11	4768	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5328	topzet.exe

Executes dropped EXE 1 IoCs

pid	Process
5328	topzet.exe

Loads dropped DLL 1 IoCs

pid	Process
4768	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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\pnpcg\\qzxup.dll\",init"	rundll32.exe

Enumerates connected drives 3 TTPs 23 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)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	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

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	topzet.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
4160	cmd.exe
3176	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3176	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4768	rundll32.exe
4768	rundll32.exe
4768	rundll32.exe
4768	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4768	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4848	2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe
5328	topzet.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 4160	4848	2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe	88
PID 4160 wrote to memory of 3176	4160	cmd.exe	90
PID 4160 wrote to memory of 5328	4160	cmd.exe	91
PID 5328 wrote to memory of 4768	5328	topzet.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\topzet.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4160
- - 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:3176
- - \??\c:\topzet.exe
    c:\topzet.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-15_82c857a85c596cf6e6221d834e315c42_elex_strictor_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5328
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\pnpcg\qzxup.dll",init c:\topzet.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 behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4768

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

qzxup.dll

Path \??\c:\pnpcg\qzxup.dll
Size 50KB
SHA256 a632527bcd457c9a4cfce83e7a9a675baff790b0279de5d8ea3192dfb2dd888a
MD5 ab32c5bfd7ecfbe9ed733dfb81210933
SHA1 4d5c6e7a0031691f12e78b096ff928b0d55bdfab
SHA512 59b971146292074d76d23d5f26889108f4d6e33804332449f4c589bf8a8d53e37ac8dfea47e9d3c5ae0f382ae1acf25c4968bea87b3f5ff9d51f2274229c1ab5
SSDEEP 1536:mrrG57ZqLLpf+Xz+HOtygmRnO/x5Rq8Gm:mwKGqutWM/x281
TLSH
T12033F1F4EFB4E067ECBA5F743E6A6215DA727B10C63188EA518090135F335CACA18717
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

topzet.exe

Path \??\c:\topzet.exe
Size 119KB
SHA256 dcc337934365c7a00a30669ca3b07d7f44e9c4c5bbfedcf579c1f13df7068b74
MD5 1edb523ea5eefb5968862aa66b0ca96b
SHA1 bdef95d47fb7786fd8b3c587bebb8c25302d6f94
SHA512 22e055a6b9360434a38c5184f1cc5ff42ae6a849a21c3d8f07d979ea2eb20c43065cd36de1b39426fb4d1c489e89deea249a03ec205e6186c08c64a06ac9fb88
SSDEEP 1536:QaaczXhtqkUlX/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJnddI3GMba:la7qc9rqzMseNoVv9EJFdXMba
TLSH
T1C9C3160663E6C584F1B20B30CA3646F04A7BBCA9F970925F17407E5EBD31A55AD21B37
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4768-7-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/4768-6-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/4768-9-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/4768-8-0x0000000010000000-0x0000000010032000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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