farfli | fddac98922b4b8f18ac28c528df151def14ccff40e08c6e6bc9c44f1c039c5f1

General

Target
2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_elex_wannacry.exe
Size 412KB
Sample260820-bzhtdszyhs
SHA256 fddac98922b4b8f18ac28c528df151def14ccff40e08c6e6bc9c44f1c039c5f1
MD5 98ab69aeb2841a116bda3d06dea26b23
SHA1 c708ac7e0ec8aee88fc5214e9cd7f0e7b6b9b940
SHA512 4f14ce1654c2d09c8241c11a5eee416a41acc229e63fa541521f7d0c3531a96e5c271fb5877e5df9ccacd8bca0d055b5acde95cfddb51322f5d91b587a45d051
SSDEEP 12288:JdDU6g13sJd1fm/+yb3O2jg82ydU/DdKum8:JdE3sJd1fm/+yb3OYg84/JHz
TLSH
T12294AF01E7C351D6DE82257081FA7376B378DA4D0F12C7E3BBA8EE2E6E21191953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution 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
behavioral1/memory/3884-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/3884-12-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/3884-14-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/3884-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/3884-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3884-12-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3884-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3884-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/files/0x00100000000231f3-2.dat	UPX
behavioral1/files/0x00080000000246d0-8.dat	UPX
behavioral1/memory/3884-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/3884-12-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/3884-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/3884-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
5544	whdum.exe

Executes dropped EXE 2 IoCs

pid	Process
5544	whdum.exe
3884	vmz.exe

Loads dropped DLL 1 IoCs

pid	Process
3884	vmz.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-1-5-21-3053180483-1881419501-3594244048-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\jfzvnjy\\vmz.exe \"c:\\Program Files\\jfzvnjy\\vmzrr.dll\",Viewer"	vmz.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)	\??\n:	vmz.exe
File opened (read-only)	\??\o:	vmz.exe
File opened (read-only)	\??\w:	vmz.exe
File opened (read-only)	\??\z:	vmz.exe
File opened (read-only)	\??\h:	vmz.exe
File opened (read-only)	\??\i:	vmz.exe
File opened (read-only)	\??\j:	vmz.exe
File opened (read-only)	\??\l:	vmz.exe
File opened (read-only)	\??\q:	vmz.exe
File opened (read-only)	\??\s:	vmz.exe
File opened (read-only)	\??\u:	vmz.exe
File opened (read-only)	\??\y:	vmz.exe
File opened (read-only)	\??\g:	vmz.exe
File opened (read-only)	\??\r:	vmz.exe
File opened (read-only)	\??\v:	vmz.exe
File opened (read-only)	\??\x:	vmz.exe
File opened (read-only)	\??\a:	vmz.exe
File opened (read-only)	\??\b:	vmz.exe
File opened (read-only)	\??\e:	vmz.exe
File opened (read-only)	\??\k:	vmz.exe
File opened (read-only)	\??\p:	vmz.exe
File opened (read-only)	\??\t:	vmz.exe
File opened (read-only)	\??\m:	vmz.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	vmz.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\jfzvnjy	whdum.exe
File created	\??\c:\Program Files\jfzvnjy\vmzrr.dll	whdum.exe
File created	\??\c:\Program Files\jfzvnjy\vmz.exe	whdum.exe
File opened for modification	\??\c:\Program Files\jfzvnjy\vmz.exe	whdum.exe

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5908	cmd.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	2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_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	whdum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vmz.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
5908	cmd.exe
5460	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	vmz.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vmz.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5460	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3884	vmz.exe
3884	vmz.exe
3884	vmz.exe
3884	vmz.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3884	vmz.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4572	2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_elex_wannacry.exe
5544	whdum.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 5908	4572	2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_elex_wannacry.exe	85
PID 5908 wrote to memory of 5460	5908	cmd.exe	87
PID 5908 wrote to memory of 5544	5908	cmd.exe	88
PID 5544 wrote to memory of 3884	5544	whdum.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4572
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\whdum.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_elex_wannacry.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5908
- - 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:5460
- - C:\Users\Admin\AppData\Local\Temp\whdum.exe
    C:\Users\Admin\AppData\Local\Temp\\whdum.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-19_98ab69aeb2841a116bda3d06dea26b23_coinminer_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:5544
  - - \??\c:\Program Files\jfzvnjy\vmz.exe
      "c:\Program Files\jfzvnjy\vmz.exe" "c:\Program Files\jfzvnjy\vmzrr.dll",Viewer C:\Users\Admin\AppData\Local\Temp\whdum.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
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3884

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

vmz.exe

Path C:\Program Files\jfzvnjy\vmz.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

whdum.exe

Path C:\Users\Admin\AppData\Local\Temp\whdum.exe
Size 412KB
SHA256 fcc207d42dd3fc3e1d7ca6284c06dd5aee5087f58e30e8caee1dd5c04026dce9
MD5 d6b7749e9287a5a3dcbd8593dac0630a
SHA1 0c396afbf470253729c04c5fdadaf0bd86de188e
SHA512 4010b07b3acf3a5dbc25c6c6688a408db4925e7da6515e30639d4098b746470c323e1cd563d6338a5a3404c16ae0ac0217f640be57ce9aac44746bfaf2a6c4c5
SSDEEP 12288:JdDU6g13sJd1fm/+yb3O2jg82ydU/DdKum8:JdE3sJd1fm/+yb3OYg84/JHz
TLSH
T1D694AF01E7C351D6DE82257081FA7376B378DA4D0F12C7E3BBA8EE2E6E21191953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vmzrr.dll

Path \??\c:\Program Files\jfzvnjy\vmzrr.dll
Size 89KB
SHA256 26187e26c490358123475afaddd2b3f82f095ab60cfc56eabf4715c73b18639e
MD5 dcedc9efc68ca59b37eef8b21fc0fc0a
SHA1 77d43eebe99a59321bf97a4da2389f1218d06418
SHA512 5501cc35a07cdd4d8301d8d95be6a3871f5790a1e53b51326ea8daa70e95f8a3172eba186b54000e4bc6c1ae933feead8f3c10d7cf309bc7ff1082c9ecd6608a
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlG3:M1uF6Feu2NlQOBcG3
TLSH
T1A89302C45665CD8BCCD87072727FAA4EE631D4CCB941ACB34A5E13A31B36AE3D05A705
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3884-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/3884-12-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/3884-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/3884-17-0x0000000010000000-0x0000000010033000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads