farfli | 8abffcd8039b3a1d66701328e646ea9aadcb1b7a85c9e8f116dbaf9a4f58c3c2

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/07/2026, 22:24

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General

Target
2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe
Size 295KB
Sample260702-2be1pscv6k
SHA256 8abffcd8039b3a1d66701328e646ea9aadcb1b7a85c9e8f116dbaf9a4f58c3c2
MD5 ec4e7ac0a26892f860e2fa83e7f9c066
SHA1 42845d22428957c8b0c8b064a9621cf677791da6
SHA512 3603bcdfa18073b1f6635bc7664c84dce449869aeb7466a7dba427d2832fd012005c76c82371262e58b1100acdf2b10a306026a7a9c4ec0305b34c8f5caa4480
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T1F9540282E502DF07EC3FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer upx

Malware Config

Signatures

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

Detects Farfli Backdoor 7 IoCs

resource	yara_rule
behavioral2/memory/1880-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/1880-10-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/1880-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/1880-17-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/1880-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/1880-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/1880-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/1880-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1880-10-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1880-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1880-17-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1880-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1880-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1880-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4440-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/4440-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x000a00000001b1b6-3.dat	UPX
behavioral2/memory/4620-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
1	1880	rundll32.exe
4	1880	rundll32.exe
5	1880	rundll32.exe
6	1880	rundll32.exe
7	1880	rundll32.exe
9	1880	rundll32.exe
10	1880	rundll32.exe
11	1880	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4620	nuvtwonsi.exe

Executes dropped EXE 1 IoCs

pid	Process
4620	nuvtwonsi.exe

Loads dropped DLL 1 IoCs

pid	Process
1880	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-1-5-21-2639994890-966400312-4246138405-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\cxpzd\\qlcan.dll\",GetProc"	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)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	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)	\??\o:	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)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	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
behavioral2/memory/4440-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/4440-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x000a00000001b1b6-3.dat	upx
behavioral2/memory/4620-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\cxpzd	nuvtwonsi.exe
File created	\??\c:\Program Files\cxpzd\qlcan.dll	nuvtwonsi.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_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	nuvtwonsi.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
4700	PING.EXE
5904	cmd.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
4700	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe
1880	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4440	2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe
4620	nuvtwonsi.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 5904	4440	2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe	87
PID 5904 wrote to memory of 4700	5904	cmd.exe	89
PID 5904 wrote to memory of 4620	5904	cmd.exe	90
PID 4620 wrote to memory of 1880	4620	nuvtwonsi.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nuvtwonsi.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5904
- - 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:4700
- - C:\Users\Admin\AppData\Local\Temp\nuvtwonsi.exe
    C:\Users\Admin\AppData\Local\Temp\\nuvtwonsi.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_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:4620
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\cxpzd\qlcan.dll",GetProc C:\Users\Admin\AppData\Local\Temp\nuvtwonsi.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:1880

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

nuvtwonsi.exe

Path C:\Users\Admin\AppData\Local\Temp\nuvtwonsi.exe
Size 295KB
SHA256 9a8a7668293f841685981c2959a9e311ebf95f3f223c383797846082debb0cac
MD5 9b1b19627a7182a00ad199451cabdc37
SHA1 7f1d9fe09f29cc09c035cae5dfd3640eb35c8e10
SHA512 4cf541f4578237879f284db650fab076704b0338deb11bf5b491bbd5fd85b93d23aa571b7ba5301ffd9d6c666ae4f1d9e9d18a0c78714c34526470e540ff9a91
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOj:ywLcCmuErglr73aAD+0
TLSH
T1F0540282E502DF07EC3FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

qlcan.dll

Path \??\c:\Program Files\cxpzd\qlcan.dll
Size 218KB
SHA256 e7710a001ef85838e147631ee2231aaad95790ab097b44b1c699bd4724accb0a
MD5 193614b55de1a1d3da04b52658ed85d2
SHA1 89cf2d36123874a64c1769851b8bd5b0b8dd2453
SHA512 2c39a9d3350eafd80399de4567b72233877e4a92bbf07385fedb024fe8385ad54e03a522a49a817b71c3746af3eb484714fae61b405b03314a5c0e8c5b4127f9
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytU:pnNwDTi3swddDiROXIO
TLSH
T1D424128BCF983873C5223379597951A0B9325290AFA1534DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1880-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-14-0x0000000000B30000-0x0000000000B31000-memory.dmp

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memory/1880-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-17-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/1880-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4440-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4440-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4620-6-0x0000000000400000-0x0000000000483000-memory.dmp

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