farfli | 96f365ee749cc630824a228860b11598ffc8f60eecf5e699b28d4a96eb1431ff

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
06/05/2026, 02:23

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General

Target
2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe
Size 113KB
Sample260506-cva4esdx5k
SHA256 96f365ee749cc630824a228860b11598ffc8f60eecf5e699b28d4a96eb1431ff
MD5 edda60d1677da965b12619dda299e92e
SHA1 f53ea0331c041f1d52228fed24713c687f2ce9b5
SHA512 5c7177afba6911358322f48de137f59d9a5347199fab5f1cae192edbd7717a589214003edfe098aafc13009ab17504f03c6df4cf84a11824262081c1334f2170
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX4:piAXaKDeKNnD36cb8tI
TLSH
T1ADB39E12ABF0C6A5E0665CB5467757619EB2FC2A2924832777C6B70FEC30F04EE25394
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer

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/6008-12-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral1/memory/6008-13-0x0000000010001000-0x000000001001E000-memory.dmp	family_farfli
behavioral1/memory/6008-14-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral1/memory/6008-16-0x0000000010001000-0x000000001001E000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/6008-12-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/6008-14-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 15 IoCs

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

flow	pid	Process
9	6008	rundll32.exe
11	6008	rundll32.exe
10	6008	rundll32.exe
12	6008	rundll32.exe
15	6008	rundll32.exe
16	6008	rundll32.exe
33	6008	rundll32.exe
35	6008	rundll32.exe
44	6008	rundll32.exe
45	6008	rundll32.exe
49	6008	rundll32.exe
50	6008	rundll32.exe
57	6008	rundll32.exe
58	6008	rundll32.exe
59	6008	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5116	gdelt.exe

Executes dropped EXE 1 IoCs

pid	Process
5116	gdelt.exe

Loads dropped DLL 1 IoCs

pid	Process
6008	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-1-5-21-643422742-1162610606-620613169-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\artwef\\wcgkk.dll\",GetWindowClass"	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)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\q:	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)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	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)	\??\s:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	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

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	2026-05-06_edda60d1677da965b12619dda299e92e_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	gdelt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4448	cmd.exe
4556	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
4556	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
6008	rundll32.exe
6008	rundll32.exe
6008	rundll32.exe
6008	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	6008	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4548	2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe
5116	gdelt.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4548 wrote to memory of 4448	4548	2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe	85
PID 4448 wrote to memory of 4556	4448	cmd.exe	87
PID 4448 wrote to memory of 5116	4448	cmd.exe	88
PID 5116 wrote to memory of 6008	5116	gdelt.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\gdelt.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4448
- - 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:4556
- - \??\c:\gdelt.exe
    c:\gdelt.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-06_edda60d1677da965b12619dda299e92e_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5116
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\artwef\wcgkk.dll",GetWindowClass c:\gdelt.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:6008

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

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Downloads

wcgkk.dll

Path C:\artwef\wcgkk.dll
Size 46KB
SHA256 f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9
MD5 a3fd41430ddcaa55fde840788925406a
SHA1 dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2
SHA512 23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9
SSDEEP 768:2sUfnvxs6iLlhpfFPtnQf7kifD/v7yb9Bh7Cb0VQJojZC/xjTk:2sJT1qf4W/vub9nnV1jZC/xE
TLSH
T19D2302C8A6F08EF3D2F90B7980E046DCDCFDB939877381150566008E7C71057FA446AA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

gdelt.exe

Path C:\gdelt.exe
Size 113KB
SHA256 f2ed0bafa5d21f9c14bcf651f9b46330566f3a92420eeae4de695513abd214c2
MD5 f6c8f4d61ef4fdc15d0d4dcb0f71e87a
SHA1 529b51df31758bede62fa9115374d8dade18aff2
SHA512 87d28e76edab2687cb63123c9f5138bb22890a081dacd2846f32ddfbe4577f4789b4126f003dc9afe75c838f634b61112c9b8c0a4adf091eb0c7b03178e05b4e
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX4J:piAXaKDeKNnD36cb8tIJ
TLSH
T1AAB39E12ABF0C6A5E0265C75467757619EB2FC6A2924832777C6B70FEC30F04EE253A4
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4548-2-0x00000000008E0000-0x0000000000A00000-memory.dmp

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memory/4548-0-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/4548-3-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/5116-8-0x00000000008A0000-0x00000000009C0000-memory.dmp

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memory/5116-9-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/6008-13-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/6008-12-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/6008-14-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/6008-15-0x0000000001550000-0x0000000001670000-memory.dmp

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memory/6008-16-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/6008-19-0x0000000001550000-0x0000000001670000-memory.dmp

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memory/6008-29-0x0000000001550000-0x0000000001670000-memory.dmp

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memory/6008-30-0x0000000001550000-0x0000000001670000-memory.dmp

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