farfli | fc81b0e8632a117f67b6614807df592dda6354b2ad8ea49eb146a71a85fe301c

Analysis

max time kernel
148s
max time network
136s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/09/2026, 22:59

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General

Target
2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_coinminer_elex_wannacry.exe
Size 154KB
Sample260904-2ynlcsaf29
SHA256 fc81b0e8632a117f67b6614807df592dda6354b2ad8ea49eb146a71a85fe301c
MD5 bcc9e6e3f8ffcf50c4ddb7ba10295d4e
SHA1 1c1bd96ece86155d19f9216c9fd056a4f48c26b4
SHA512 485bd6f24721080b14b8f583ae7734302c06025927042bb1bc24d9d9ffd1d84af4dd9580dac0be1562255d40e18fe4a513b3dc3904c13dbcc14568e764823e3a
SSDEEP 1536:B3aacz2htqkUla/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJny3GM+9qKvd:Ua/qc9rqzMseNoVv9EJFnM8qKvd
TLSH
T1B3F3280267F6C194F0B31E34DA3646F08BA6BC59FA70922B13847E4EBD31A15ED21776
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
behavioral2/memory/1124-10-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli
behavioral2/memory/1124-9-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/1124-11-0x0000000010000000-0x0000000010032000-memory.dmp	family_farfli
behavioral2/memory/1124-12-0x0000000010001000-0x0000000010021000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/1124-9-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1124-11-0x0000000010000000-0x0000000010032000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/5156-0-0x0000000000400000-0x0000000000423000-memory.dmp	UPX
behavioral2/memory/5156-2-0x0000000000400000-0x0000000000423000-memory.dmp	UPX
behavioral2/files/0x000900000001b1c8-3.dat	UPX
behavioral2/memory/5872-6-0x0000000000400000-0x0000000000423000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
8	1124	rundll32.exe
10	1124	rundll32.exe
11	1124	rundll32.exe
12	1124	rundll32.exe
13	1124	rundll32.exe
15	1124	rundll32.exe
18	1124	rundll32.exe
19	1124	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5872	nmdhzsme.exe

Executes dropped EXE 1 IoCs

pid	Process
5872	nmdhzsme.exe

Loads dropped DLL 1 IoCs

pid	Process
1124	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-1-5-21-3986082593-3624157295-3514260330-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\phhgl\\ypzfzg.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)	\??\i:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\d:	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/5156-0-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/5156-2-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/files/0x000900000001b1c8-3.dat	upx
behavioral2/memory/5872-6-0x0000000000400000-0x0000000000423000-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
4100	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_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	nmdhzsme.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
4100	cmd.exe
4624	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
4624	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1124	rundll32.exe
1124	rundll32.exe
1124	rundll32.exe
1124	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1124	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5156	2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_coinminer_elex_wannacry.exe
5872	nmdhzsme.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5156 wrote to memory of 4100	5156	2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_coinminer_elex_wannacry.exe	89
PID 4100 wrote to memory of 4624	4100	cmd.exe	91
PID 4100 wrote to memory of 5872	4100	cmd.exe	92
PID 5872 wrote to memory of 1124	5872	nmdhzsme.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5156
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\nmdhzsme.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_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:4100
- - 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:4624
- - \??\c:\nmdhzsme.exe
    c:\nmdhzsme.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-04_bcc9e6e3f8ffcf50c4ddb7ba10295d4e_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:5872
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\phhgl\ypzfzg.dll",init c:\nmdhzsme.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:1124

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

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Downloads

nmdhzsme.exe

Path \??\c:\nmdhzsme.exe
Size 155KB
SHA256 eecfcca0d3d0138576288321654bc29f19261f4aa52c59e278bc2d2592e3ff20
MD5 469847a0adc0115a7af3454729c0d2b7
SHA1 e12d7dd37f0cf912e6e3670a78443f0b807e0ad9
SHA512 b073739cbac118058fcf814aab08bab2596b4a04ca543cc115ac72d0a66f8f54eb0f08c27c719f2f791024c236bb4be55f380b7cc6a0470396128cb956bbbf3f
SSDEEP 1536:B3aacz2htqkUla/NGVcJ/gAqcX0JMseuiGSeNVvDi0tMuUJJny3GM+9qKvJ:Ua/qc9rqzMseNoVv9EJFnM8qKvJ
TLSH
T135F3280267F6C194F0B31E34DA2646F08BA6BC59FA70922B13847E4EBD31A15ED21776
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ypzfzg.dll

Path \??\c:\phhgl\ypzfzg.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/1124-10-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/1124-9-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/1124-11-0x0000000010000000-0x0000000010032000-memory.dmp

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memory/1124-12-0x0000000010001000-0x0000000010021000-memory.dmp

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memory/5156-0-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/5156-2-0x0000000000400000-0x0000000000423000-memory.dmp

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memory/5872-6-0x0000000000400000-0x0000000000423000-memory.dmp

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