farfli | daa347c5d9a90e45446390cf3443aae6b10dafc2d865eedebc232e94e38b785f

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
08/08/2026, 05:03

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General

Target
2026-08-08_2fb084620a9de4470d4e65fa41932ee9_elex_wannacry.exe
Size 98KB
Sample260808-fp197styet
SHA256 daa347c5d9a90e45446390cf3443aae6b10dafc2d865eedebc232e94e38b785f
MD5 2fb084620a9de4470d4e65fa41932ee9
SHA1 ee5122908d19e746d93755030dcbe4ca9cd5c7c2
SHA512 f2b404b54ff711f383ac938e17257460ce8454778f5009b42062d8596655ef1099f3626df51d1f5d2f10714fd9afbd4b6242405a2cd8ed2708bfe21c1f254028
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6z:uLRrO10TiJD9yjqrilyxOuPp6z
TLSH
T1A1A3BF1DAD52C8AEE0014B7147579715E6B2AC5AF9714F334340FA1DEF32A0BEED9288
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 3 IoCs

resource	yara_rule
behavioral1/memory/2864-12-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/2864-15-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral1/memory/2864-16-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/2864-12-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2864-15-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2864-16-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
6	2864	rundll32.exe
7	2864	rundll32.exe
8	2864	rundll32.exe
16	2864	rundll32.exe
31	2864	rundll32.exe
35	2864	rundll32.exe
45	2864	rundll32.exe
48	2864	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3940	rfbpz.exe

Executes dropped EXE 1 IoCs

pid	Process
3940	rfbpz.exe

Loads dropped DLL 1 IoCs

pid	Process
2864	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-1-5-21-889581200-2041691093-2048517887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\xxwpu\\dtyccc.dll\",QueryPluginInterface"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	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

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
2944	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	rfbpz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-08_2fb084620a9de4470d4e65fa41932ee9_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

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
3628	PING.EXE
2944	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
3628	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe
2864	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
464	2026-08-08_2fb084620a9de4470d4e65fa41932ee9_elex_wannacry.exe
3940	rfbpz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 464 wrote to memory of 2944	464	2026-08-08_2fb084620a9de4470d4e65fa41932ee9_elex_wannacry.exe	86
PID 2944 wrote to memory of 3628	2944	cmd.exe	88
PID 2944 wrote to memory of 3940	2944	cmd.exe	89
PID 3940 wrote to memory of 2864	3940	rfbpz.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-08-08_2fb084620a9de4470d4e65fa41932ee9_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_2fb084620a9de4470d4e65fa41932ee9_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:464
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\rfbpz.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_2fb084620a9de4470d4e65fa41932ee9_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:2944
- - 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:3628
- - C:\Users\Admin\AppData\Local\Temp\rfbpz.exe
    C:\Users\Admin\AppData\Local\Temp\\rfbpz.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_2fb084620a9de4470d4e65fa41932ee9_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3940
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\xxwpu\dtyccc.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\rfbpz.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:2864

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

rfbpz.exe

Path C:\Users\Admin\AppData\Local\Temp\rfbpz.exe
Size 98KB
SHA256 e260f20234e9972c7d3b70583c437c5f77892837a708cbf9e6d6a1c65dfe60ad
MD5 2a7b75f36beca2f05b1df8d084a687e9
SHA1 c09a9a351d6c6c15b2816d3f6a745bf0ffbb0562
SHA512 6cba5fc4e1680f1d49eabfd4585383e7f85db8f19d0e19a19236a47ee729c324b112aae81eed5b71421f01d7576c8c1d278c83e3b04e9f9e3aaa0b8c040d5218
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyp6T:uLRrO10TiJD9yjqrilyxOuPp6T
TLSH
T150A3BF1DAD52C9AEE0014B7143579715E6B2AC5AF9714F334340FA1DEF32A0BEED9288
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

dtyccc.dll

Path \??\c:\xxwpu\dtyccc.dll
Size 44KB
SHA256 9111c1eb1f0b59dcd49cfd5a0abc0ba100ac59a3bcae8623ff091dfdc46fed3c
MD5 0f12a7d509b2c9bb9b4cd6d8a0325e86
SHA1 f5fb59ad4f0633d115b06f35a2dc161dc4367157
SHA512 e3c84a643ff0a2627daba8a056221985a472aaf07bade61b3e9459db4bfc8792c1347606911e3fcc01581508004b18b5435bcccd5e7617cc6d091f37a5f42e7f
SSDEEP 768:DICzePjle2367kjhrXLdCuYMW8QVnwrLDGe/brbtJyOTuXfADVjeJ2i/MVJWAE:DDePjA23Ukjh37YMonwrvGybrbbRCf4E
TLSH
T1FD23F1A7B94E8D4FC0AE41F7078FC8D422B5589A97A7CB4626008F216CC4FB07E52376
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/464-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/464-2-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/2864-10-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2864-11-0x0000000000CF0000-0x0000000000CF2000-memory.dmp

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memory/2864-13-0x0000000000CF0000-0x0000000000CF2000-memory.dmp

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memory/2864-12-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2864-15-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2864-16-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/3940-7-0x0000000000400000-0x0000000000417000-memory.dmp

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