farfli | 140838fc9ff95c946a98caa576d8114ed8e559bf8df5896aa0d2ce79be60d58f

General

Target
2026-11-08_6777d797e5ad2808bad8d6d51aba410e_coinminer_elex_wannacry.exe
Size 250KB
Sample261109-cwcnmshs4x
SHA256 140838fc9ff95c946a98caa576d8114ed8e559bf8df5896aa0d2ce79be60d58f
MD5 6777d797e5ad2808bad8d6d51aba410e
SHA1 70eda858fac4699f47be16bf0ab262b162e51cbb
SHA512 63f07c4a536e8fbdabfb9540fa339a84f838353ecb5685ddfa599aacf2bb406e481011ea6340ff520670a64e572af50d8f591eae036661caef77f95284d5a387
SSDEEP 6144:etatPE5Txnev1zQBgexOdw6rpI9FsbLO:9PwTNCl+zGp60
TLSH
T116448C1233E84869E5EA3E33CEB6A630D7FAE9759C33D66F1394420D4E36904CB15366
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
behavioral1/memory/3788-11-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral1/memory/3788-12-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral1/memory/3788-14-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral1/memory/3788-16-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/3788-11-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3788-12-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3788-14-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3788-16-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/files/0x00180000000242da-2.dat	UPX
behavioral1/files/0x00090000000243f3-8.dat	UPX
behavioral1/memory/3788-11-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral1/memory/3788-12-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral1/memory/3788-14-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral1/memory/3788-16-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
3240	dtnmaq.exe

Executes dropped EXE 2 IoCs

pid	Process
3240	dtnmaq.exe
3788	amv.exe

Loads dropped DLL 1 IoCs

pid	Process
3788	amv.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-1-5-21-240542094-4193773837-3211495583-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\bzpkv\\amv.exe \"c:\\Program Files\\bzpkv\\amvrn.dll\",Group"	amv.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:	amv.exe
File opened (read-only)	\??\n:	amv.exe
File opened (read-only)	\??\a:	amv.exe
File opened (read-only)	\??\b:	amv.exe
File opened (read-only)	\??\e:	amv.exe
File opened (read-only)	\??\l:	amv.exe
File opened (read-only)	\??\q:	amv.exe
File opened (read-only)	\??\x:	amv.exe
File opened (read-only)	\??\z:	amv.exe
File opened (read-only)	\??\g:	amv.exe
File opened (read-only)	\??\o:	amv.exe
File opened (read-only)	\??\s:	amv.exe
File opened (read-only)	\??\v:	amv.exe
File opened (read-only)	\??\w:	amv.exe
File opened (read-only)	\??\y:	amv.exe
File opened (read-only)	\??\h:	amv.exe
File opened (read-only)	\??\i:	amv.exe
File opened (read-only)	\??\k:	amv.exe
File opened (read-only)	\??\m:	amv.exe
File opened (read-only)	\??\p:	amv.exe
File opened (read-only)	\??\r:	amv.exe
File opened (read-only)	\??\t:	amv.exe
File opened (read-only)	\??\u:	amv.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	amv.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00090000000243f3-8.dat	upx
behavioral1/memory/3788-11-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral1/memory/3788-12-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral1/memory/3788-14-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral1/memory/3788-16-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\bzpkv	dtnmaq.exe
File created	\??\c:\Program Files\bzpkv\amvrn.dll	dtnmaq.exe
File created	\??\c:\Program Files\bzpkv\amv.exe	dtnmaq.exe
File opened for modification	\??\c:\Program Files\bzpkv\amv.exe	dtnmaq.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
4160	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	amv.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	amv.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dtnmaq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-08_6777d797e5ad2808bad8d6d51aba410e_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3396	PING.EXE
4160	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	amv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	amv.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3396	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3788	amv.exe
3788	amv.exe
3788	amv.exe
3788	amv.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3788	amv.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4628	2026-11-08_6777d797e5ad2808bad8d6d51aba410e_coinminer_elex_wannacry.exe
3240	dtnmaq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4628 wrote to memory of 4160	4628	2026-11-08_6777d797e5ad2808bad8d6d51aba410e_coinminer_elex_wannacry.exe	85
PID 4160 wrote to memory of 3396	4160	cmd.exe	87
PID 4160 wrote to memory of 3240	4160	cmd.exe	88
PID 3240 wrote to memory of 3788	3240	dtnmaq.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-11-08_6777d797e5ad2808bad8d6d51aba410e_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-08_6777d797e5ad2808bad8d6d51aba410e_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dtnmaq.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-08_6777d797e5ad2808bad8d6d51aba410e_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:4160
- - 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:3396
- - C:\Users\Admin\AppData\Local\Temp\dtnmaq.exe
    C:\Users\Admin\AppData\Local\Temp\\dtnmaq.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-08_6777d797e5ad2808bad8d6d51aba410e_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:3240
  - - \??\c:\Program Files\bzpkv\amv.exe
      "c:\Program Files\bzpkv\amv.exe" "c:\Program Files\bzpkv\amvrn.dll",Group C:\Users\Admin\AppData\Local\Temp\dtnmaq.exe
      4⤵
      Executes dropped EXE
      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:3788

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

Indicator Removal

1

T1070

File Deletion

Modify Registry

Pre-OS Boot

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

2

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

amv.exe

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

Submit Download

dtnmaq.exe

Path C:\Users\Admin\AppData\Local\Temp\dtnmaq.exe
Size 250KB
SHA256 104f0f781fe097101b06e84591facea1fb9b159f6c026abb2609bfa4dac2c614
MD5 799a668a29a4f0a7e664afbd36516ac7
SHA1 d87ac8c69d66f7cf818075ab9d0410667cc036f3
SHA512 cd4362cb6b3de8ca1c8e9cf922d2683c90b238b2783563e155bdc0e6832fb7656cf18220e7b208b8a6a73d2331a07a59c5fe6f27d6fe34bfc0d66db67c7cd3ab
SSDEEP 6144:etatPE5Txnev1zQBgexOdw6rpI9FsbLOi:9PwTNCl+zGp60n
TLSH
T129448C1233E84869E5EA3E33CEB6A630D7FAE9759C33D66F1394420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

amvrn.dll

Path \??\c:\Program Files\bzpkv\amvrn.dll
Size 97KB
SHA256 acded27ff819d842dd68e03578484c6cc727df4560b1fcbaecd02c3850696f68
MD5 23eef6f501cae3452d94696fb98e34c0
SHA1 c0d945498b3f97d4ad615bf27b32b91c151dbec1
SHA512 763c8f00481b1d688a8dbf8aa7860ba693d63828665ec754e9f3fa264fb410dde315b055ee56cc091dc99bae1051bd11acfd6141de408d454819e63cf0f96c98
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbGG:5pG6Sg9txRk/SS6bGG
TLSH
T19EA301F6290D7DD6CB354839D2528E35FA29EE348C589F887ECE6C13ACB8510E1645F1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3788-11-0x0000000010000000-0x0000000010038000-memory.dmp

Download

memory/3788-12-0x0000000010000000-0x0000000010038000-memory.dmp

Download

memory/3788-14-0x0000000010000000-0x0000000010038000-memory.dmp

Download

memory/3788-16-0x0000000010000000-0x0000000010038000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads