farfli | 62311b84a2d43fd8754a03b3bab83f063b1a93b808e311fbd672d3b454d7914c

Analysis

max time kernel
149s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
31/08/2026, 08:44

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
2026-08-30_873cba79ae5fd0f961a311961bfad4ed_coinminer_elex_wannacry.exe
Size 145KB
Sample260831-km727aycnd
SHA256 62311b84a2d43fd8754a03b3bab83f063b1a93b808e311fbd672d3b454d7914c
MD5 873cba79ae5fd0f961a311961bfad4ed
SHA1 af4db34b5e89fd16962124ae75193946ccb80385
SHA512 06eed315a601cb8fb4f37c8775a36dd040efe09cc3cc50a3a82bdb57f5fafdbf11d83b12d95706fbda9f8883d44fc16417a8c66bb553a09dee7b8b3aa656a3a9
SSDEEP 1536:L3aacznhtqkUla/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJny3GM+9xx:+aCqc9rqzMseNoVv9EJFnM8xx
TLSH
T10DE3370263F6C194F0B21A34CA3646F04B7ABC69FA70921B17847E4EBD31A15ED21777
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer upx

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/2364-11-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral1/memory/2364-10-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral1/memory/2364-12-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral1/memory/2364-13-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/2364-10-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2364-12-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/4536-0-0x0000000000400000-0x0000000000423000-memory.dmp	UPX
behavioral1/memory/4536-2-0x0000000000400000-0x0000000000423000-memory.dmp	UPX
behavioral1/files/0x001100000001e4cc-4.dat	UPX
behavioral1/memory/4684-7-0x0000000000400000-0x0000000000423000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
11	2364	rundll32.exe
17	2364	rundll32.exe
18	2364	rundll32.exe
19	2364	rundll32.exe
31	2364	rundll32.exe
32	2364	rundll32.exe
37	2364	rundll32.exe
45	2364	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4684	njmvpxmeg.exe

Executes dropped EXE 1 IoCs

pid	Process
4684	njmvpxmeg.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	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-1-5-21-889581200-2041691093-2048517887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\oxoxc\\xekkh.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)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/4536-0-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral1/memory/4536-2-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral1/files/0x001100000001e4cc-4.dat	upx
behavioral1/memory/4684-7-0x0000000000400000-0x0000000000423000-memory.dmp	upx

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
2132	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	2026-08-30_873cba79ae5fd0f961a311961bfad4ed_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	njmvpxmeg.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
2132	cmd.exe
4664	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
4664	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2364	rundll32.exe
2364	rundll32.exe
2364	rundll32.exe
2364	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4536	2026-08-30_873cba79ae5fd0f961a311961bfad4ed_coinminer_elex_wannacry.exe
4684	njmvpxmeg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 2132	4536	2026-08-30_873cba79ae5fd0f961a311961bfad4ed_coinminer_elex_wannacry.exe	87
PID 2132 wrote to memory of 4664	2132	cmd.exe	89
PID 2132 wrote to memory of 4684	2132	cmd.exe	91
PID 4684 wrote to memory of 2364	4684	njmvpxmeg.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-30_873cba79ae5fd0f961a311961bfad4ed_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-30_873cba79ae5fd0f961a311961bfad4ed_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\njmvpxmeg.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-30_873cba79ae5fd0f961a311961bfad4ed_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:2132
- - 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:4664
- - \??\c:\njmvpxmeg.exe
    c:\njmvpxmeg.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-30_873cba79ae5fd0f961a311961bfad4ed_coinminer_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4684
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\oxoxc\xekkh.dll",init c:\njmvpxmeg.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:2364

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

Replay Monitor

Loading Replay Monitor...

Downloads

njmvpxmeg.exe

Path C:\njmvpxmeg.exe
Size 145KB
SHA256 e27556bc975390d700e3c73251de3407ff8609c64a6de6d8e91dd69d6fbf9cb9
MD5 9cd89c0193f45e9d1139417bc8fae959
SHA1 d4e0aa792664741fd647396d862a89cefe03c237
SHA512 8c9461171b1ddde8b25149de71f69e0addc56db808be2f7c0d4494fbc86c4b53cb6de0f7a5ff49ca8167c00006d2c7c33ea3996b9b8e357777320293d20c6585
SSDEEP 1536:L3aacznhtqkUla/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJny3GM+9xS:+aCqc9rqzMseNoVv9EJFnM8xS
TLSH
T131E3270267F6C194F0B21A34CA3646F08B7ABC69FA70921B17847E4EBD31A15ED21777
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

xekkh.dll

Path \??\c:\oxoxc\xekkh.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

memory/2364-11-0x0000000010001000-0x0000000010021000-memory.dmp

Download

memory/2364-10-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/2364-12-0x0000000010000000-0x0000000010032000-memory.dmp

Download

memory/2364-13-0x0000000010001000-0x0000000010021000-memory.dmp

Download

memory/4536-0-0x0000000000400000-0x0000000000423000-memory.dmp

Download

memory/4536-2-0x0000000000400000-0x0000000000423000-memory.dmp

Download

memory/4684-7-0x0000000000400000-0x0000000000423000-memory.dmp

Download