farfli | fb3ca9e8420e67bfd871740a30d6d5107caabaa4c2c8a91c1eb601739fc72f88

Analysis

max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/09/2026, 22:40

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General

Target
2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_coinminer_elex_wannacry.exe
Size 406KB
Sample260901-2lr31ssyd1
SHA256 fb3ca9e8420e67bfd871740a30d6d5107caabaa4c2c8a91c1eb601739fc72f88
MD5 fe69fc3f9bc9d469567ec71b4650675a
SHA1 7086c1b7a16f87b1b0b060f0b27632ac7d02736c
SHA512 938f2634b7c29b04a7d2e69a0c1393a847cff8372b48f8b1c2d7dac89e6d28cb96da9751fe23e294030b88e9ffec1907d9909655939361d884b7bde4430c11f3
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum43:zdE3sJd1fm/+yb3OYs84/JHd3
TLSH
T17894AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
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
behavioral2/memory/2676-10-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2676-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2676-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2676-16-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/2676-10-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2676-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2676-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2676-16-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/3116-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/3116-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000f00000001b1d0-3.dat	UPX
behavioral2/memory/5056-7-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000d00000001c5e1-8.dat	UPX
behavioral2/memory/2676-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2676-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2676-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2676-16-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
5056	ahemb.exe

Executes dropped EXE 2 IoCs

pid	Process
5056	ahemb.exe
2676	nbgw.exe

Loads dropped DLL 1 IoCs

pid	Process
2676	nbgw.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-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\sonlmavj\\nbgw.exe \"c:\\Program Files\\sonlmavj\\nbgws.dll\",Viewer"	nbgw.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)	\??\j:	nbgw.exe
File opened (read-only)	\??\t:	nbgw.exe
File opened (read-only)	\??\w:	nbgw.exe
File opened (read-only)	\??\d:	nbgw.exe
File opened (read-only)	\??\g:	nbgw.exe
File opened (read-only)	\??\k:	nbgw.exe
File opened (read-only)	\??\l:	nbgw.exe
File opened (read-only)	\??\x:	nbgw.exe
File opened (read-only)	\??\z:	nbgw.exe
File opened (read-only)	\??\i:	nbgw.exe
File opened (read-only)	\??\m:	nbgw.exe
File opened (read-only)	\??\o:	nbgw.exe
File opened (read-only)	\??\r:	nbgw.exe
File opened (read-only)	\??\u:	nbgw.exe
File opened (read-only)	\??\v:	nbgw.exe
File opened (read-only)	\??\y:	nbgw.exe
File opened (read-only)	\??\n:	nbgw.exe
File opened (read-only)	\??\p:	nbgw.exe
File opened (read-only)	\??\q:	nbgw.exe
File opened (read-only)	\??\s:	nbgw.exe
File opened (read-only)	\??\a:	nbgw.exe
File opened (read-only)	\??\b:	nbgw.exe
File opened (read-only)	\??\h:	nbgw.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	nbgw.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\sonlmavj	ahemb.exe
File created	\??\c:\Program Files\sonlmavj\nbgws.dll	ahemb.exe
File created	\??\c:\Program Files\sonlmavj\nbgw.exe	ahemb.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
972	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	2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_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	ahemb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nbgw.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
972	cmd.exe
700	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	nbgw.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	nbgw.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
700	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2676	nbgw.exe
2676	nbgw.exe
2676	nbgw.exe
2676	nbgw.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	nbgw.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3116	2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_coinminer_elex_wannacry.exe
5056	ahemb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3116 wrote to memory of 972	3116	2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_coinminer_elex_wannacry.exe	89
PID 972 wrote to memory of 700	972	cmd.exe	91
PID 972 wrote to memory of 5056	972	cmd.exe	92
PID 5056 wrote to memory of 2676	5056	ahemb.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ahemb.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_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:972
- - 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:700
- - C:\Users\Admin\AppData\Local\Temp\ahemb.exe
    C:\Users\Admin\AppData\Local\Temp\\ahemb.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-31_fe69fc3f9bc9d469567ec71b4650675a_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:5056
  - - \??\c:\Program Files\sonlmavj\nbgw.exe
      "c:\Program Files\sonlmavj\nbgw.exe" "c:\Program Files\sonlmavj\nbgws.dll",Viewer C:\Users\Admin\AppData\Local\Temp\ahemb.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:2676

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

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Downloads

nbgw.exe

Path C:\Program Files\sonlmavj\nbgw.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ahemb.exe

Path C:\Users\Admin\AppData\Local\Temp\ahemb.exe
Size 406KB
SHA256 4e4c27a2c9fae2b3d40f27f91ab3d8aad92435422aae67ac8b480dcb8cb3364f
MD5 573c849b0179b0e2b821f9319deaaefb
SHA1 9d69af28cc590b177e37f93be2dfb96bc3e23d1d
SHA512 9132c5d851b5c80ee5a98c55d3f957f84583585e00ee7b569df031f622c9329639ebfedc6c80449ccff182926f5ccf4f08c85daa2147ba209fb3a71649e91f45
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKum46:zdE3sJd1fm/+yb3OYs84/JHd6
TLSH
T1D894AF01E7C351D6DE82257081FA7376B3789A4D0F12CBE3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

nbgws.dll

Path \??\c:\Program Files\sonlmavj\nbgws.dll
Size 89KB
SHA256 bc5853940703f9655f3094de3f1c7895a6eed164f6a873e3b7a323fc3ccd133d
MD5 4bda795eb8972ac68b47b3744158a502
SHA1 b61f594572550603dd37c78ff66aa1793d09e086
SHA512 3b3815f199c547cca084d01ec1c0d5cb6a5582475c1205716a6845c24fa81b3702bcfc4de0ab8d1a25f6d70c0c1564c9015c39ddf5b6897b2e1d9510f8433c0a
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlG/:M1uF6Feu2NlQOBcG/
TLSH
T1F69302C45665CD8BCCD87072327FAA4EE631D4CCB941ACB34A5E13A31A366F3D05A745
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2676-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2676-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2676-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2676-16-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/3116-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3116-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/5056-7-0x0000000000400000-0x0000000000471000-memory.dmp

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