farfli | e3aec1830e16bc2e2bb15e2c75d41fc8a77f614f98c4c986e671f7aae1f73ad4

Analysis

max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/07/2026, 08:12

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General

Target
2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe
Size 101KB
Sample260704-j4bvmsg15j
SHA256 e3aec1830e16bc2e2bb15e2c75d41fc8a77f614f98c4c986e671f7aae1f73ad4
MD5 b9eb2b6fd5994451461e891eea7b77d6
SHA1 7c7eb1967781cf313ca47de2808261a913f43421
SHA512 be58dc3b0960e423f0662a7add13fc1670ee755d092fa0a23b248dfbf4ac615e7d506f8b9b77c31308dfd45ef4a6557004d3481706cbb39cf337c5eec68036f1
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmy:uLRrO10TiJD9yjqrilyxOuP
TLSH
T15EA37C1C6962C59EE4015F74434B962096A2AC19FA304F335384BB4EFF36E1BEDA91D8
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 3 IoCs

resource	yara_rule
behavioral2/memory/1884-11-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/1884-13-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli
behavioral2/memory/1884-14-0x0000000010000000-0x0000000010023000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/1884-11-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1884-13-0x0000000010000000-0x0000000010023000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1884-14-0x0000000010000000-0x0000000010023000-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
2	1884	rundll32.exe
3	1884	rundll32.exe
4	1884	rundll32.exe
5	1884	rundll32.exe
7	1884	rundll32.exe
8	1884	rundll32.exe
10	1884	rundll32.exe
11	1884	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2160	ocjkgxvem.exe

Executes dropped EXE 1 IoCs

pid	Process
2160	ocjkgxvem.exe

Loads dropped DLL 1 IoCs

pid	Process
1884	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-1-5-21-3047816590-610495838-277027736-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\utururndp\\tantq.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)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	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

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	ocjkgxvem.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_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
2372	cmd.exe
4152	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
4152	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1884	rundll32.exe
1884	rundll32.exe
1884	rundll32.exe
1884	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3020	2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe
2160	ocjkgxvem.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2372	3020	2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe	88
PID 2372 wrote to memory of 4152	2372	cmd.exe	90
PID 2372 wrote to memory of 2160	2372	cmd.exe	91
PID 2160 wrote to memory of 1884	2160	ocjkgxvem.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ocjkgxvem.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2372
- - 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:4152
- - C:\Users\Admin\AppData\Local\Temp\ocjkgxvem.exe
    C:\Users\Admin\AppData\Local\Temp\\ocjkgxvem.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-04_b9eb2b6fd5994451461e891eea7b77d6_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2160
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\utururndp\tantq.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\ocjkgxvem.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:1884

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

ocjkgxvem.exe

Path C:\Users\Admin\AppData\Local\Temp\ocjkgxvem.exe
Size 101KB
SHA256 4b8ffdaa622971a9490433a6ffbf23f9808da78941ff237b587a502c6ccb7bd4
MD5 f38addaa0ece01bae75ca3ba735461c9
SHA1 36757649876433cc8835d29f0e3e2d6c9948cae0
SHA512 f903c706a6b26b5e77f0db53b14a15caf41a94fe9d7b2b8f87785a750d4131556ffcd19bca421b59ff310f448ba6e3a49d240f33d19c80580df786432b996763
SSDEEP 1536:8gDktLw4rO10tMrlk3SJDlf98jqP+8il3CxOeZIckWlmyc:uLRrO10TiJD9yjqrilyxOuPc
TLSH
T1FAA38C1C6962C59EE4015F74430B962097A2AC19FA344F335384BB4EFF36E1BEDA91D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tantq.dll

Path \??\c:\utururndp\tantq.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/1884-9-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/1884-10-0x00000000012F0000-0x00000000012F2000-memory.dmp

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memory/1884-11-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/1884-13-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/1884-14-0x0000000010000000-0x0000000010023000-memory.dmp

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memory/2160-6-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3020-0-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3020-2-0x0000000000400000-0x0000000000417000-memory.dmp

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