farfli | 8f518e4859865f2f17ea9a5be0ccaab011b8cde9ed70b74d7f162ac360d6bed1

Analysis

max time kernel
149s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/11/2026, 02:25

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General

Target
2026-11-11_f1d58d7072242d82a953c491172f0f81_coinminer_elex_wannacry.exe
Size 173KB
Sample261112-cwmtlsdw5k
SHA256 8f518e4859865f2f17ea9a5be0ccaab011b8cde9ed70b74d7f162ac360d6bed1
MD5 f1d58d7072242d82a953c491172f0f81
SHA1 74a2b8c5053a1cfca57451d3c9650d2db65d15c5
SHA512 9ab393ad5e06c4790bc846827253b38a802bd7a1cade12d5d905aa1db1d0dc263706be4ee9edfbe35dfb24ce79e4cc003e35c6bb535ea54870cb786e92ef50f9
SSDEEP 3072:h1qLbqRhEAZqR29I5pmHr8/iOwkZ4YHvpzerWA0luLUq:h0AZ42S5pp/dWYHBAWd+
TLSH
T17A04E141A759965AD333083F0722523DA6B9BD354F1C75D3E7C86A2E9138FE0AA3121F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion 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
behavioral2/memory/1648-7-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral2/memory/1648-9-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral2/memory/1648-10-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral2/memory/1648-11-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/1648-7-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1648-9-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1648-10-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1648-11-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

Detects executables packed with VMProtect. 4 IoCs

resource	yara_rule
behavioral2/memory/1648-7-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/1648-9-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/1648-10-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/1648-11-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Custom signature

UPX dump on OEP (original entry point) 7 IoCs

resource	yara_rule
behavioral2/files/0x000600000001b846-1.dat	UPX
behavioral2/files/0x000e00000001c573-4.dat	UPX
behavioral2/memory/1648-6-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/1648-7-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/1648-9-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/1648-10-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/1648-11-0x0000000010000000-0x000000001003A000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	1648	rundll32.exe
3	1648	rundll32.exe
4	1648	rundll32.exe
5	1648	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5404	ubuwlamhd.exe

Executes dropped EXE 1 IoCs

pid	Process
5404	ubuwlamhd.exe

Loads dropped DLL 1 IoCs

pid	Process
1648	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-1-5-21-4280978039-528710165-233981602-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\dbmbi\\vwrah.wav\",Exit"	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)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	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 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000600000001b846-1.dat	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
3300	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ubuwlamhd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-11_f1d58d7072242d82a953c491172f0f81_coinminer_elex_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
3300	cmd.exe
1312	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
1312	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe
1648	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2136	2026-11-11_f1d58d7072242d82a953c491172f0f81_coinminer_elex_wannacry.exe
5404	ubuwlamhd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 3300	2136	2026-11-11_f1d58d7072242d82a953c491172f0f81_coinminer_elex_wannacry.exe	89
PID 3300 wrote to memory of 1312	3300	cmd.exe	91
PID 3300 wrote to memory of 5404	3300	cmd.exe	92
PID 5404 wrote to memory of 1648	5404	ubuwlamhd.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-11-11_f1d58d7072242d82a953c491172f0f81_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-11_f1d58d7072242d82a953c491172f0f81_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ubuwlamhd.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-11_f1d58d7072242d82a953c491172f0f81_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:3300
- - 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:1312
- - C:\Users\Admin\AppData\Local\Temp\ubuwlamhd.exe
    C:\Users\Admin\AppData\Local\Temp\\ubuwlamhd.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-11_f1d58d7072242d82a953c491172f0f81_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:5404
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\dbmbi\vwrah.wav",Exit C:\Users\Admin\AppData\Local\Temp\ubuwlamhd.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)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1648

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4728

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

Indicator Removal

T1070

File Deletion

T1070.004

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

ubuwlamhd.exe

Path C:\Users\Admin\AppData\Local\Temp\ubuwlamhd.exe
Size 174KB
SHA256 8c815e161bb44005c8f29bb8d1819b53a50a5131b3a3058947a2085630ae40f2
MD5 a4cb4705727c34c3e6c0fb3481271f3b
SHA1 bf713186197ea56d38861a326683e52d201abd39
SHA512 be67a19d68af9b0d31df78c83a0560ff6b12174f5300c198ba6bfe71cb634851f6e1dd7a8ef528fce62db824f13aef12f52734f0939a94de1c81249bbbf3a344
SSDEEP 3072:h1qLbqRhEAZqR29I5pmHr8/iOwkZ4YHvpzerWA0luLUqe:h0AZ42S5pp/dWYHBAWd+e
TLSH
T12004E141A759925AD333083F0726523DA6B9BD344F1C75D3E7C86A2E9138FE0AA3121F
MD5 SHA1 SHA512 SSDEEP TLSH

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vwrah.wav

Path \??\c:\dbmbi\vwrah.wav
Size 116KB
SHA256 53a1a5f96fce740b377bb053a358c0a50c63dfafddb8925d9aca66c852420872
MD5 f05a84544193f908045a170532883815
SHA1 3ad06ef6cc572a5e363d7fe05dcde5e646445994
SHA512 eda15ad3d6656a0146fd9476b205d1aefb7f4f6ecd1ea73b46b39157bb62f99d531114fc5ea32de485382577a7cbff4ae0edd4efdab1706c9840a9d165bac2ff
SSDEEP 3072:fCp96vhbrOz3bCMqKZ0V4Slz+n14q1/Jo5z5i4:6p961rOrDrZddJoz5i4
TLSH
T170C302D9B720C9EDC7E2727884BF6271170B908E4879D22F6CEEF89294711D0F0425B6
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1648-6-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/1648-7-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/1648-9-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/1648-10-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/1648-11-0x0000000010000000-0x000000001003A000-memory.dmp

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