farfli | 7f744fa922be0bc166e549bb259aeda4f1666afdffb824b1711b24f1a8091fa8

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
09/08/2026, 05:07

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General

Target
2026-08-09_a87aea07f2e38f2795069942d85b3b65_elex_wannacry.exe
Size 588KB
Sample260809-fr128agg74
SHA256 7f744fa922be0bc166e549bb259aeda4f1666afdffb824b1711b24f1a8091fa8
MD5 a87aea07f2e38f2795069942d85b3b65
SHA1 4068e6d27298c2ba8949f28b18ae3b48b06f0862
SHA512 37c120965effc7dd6f81328967315b2cddc3729cb60918ff2a2726475797eed01996e7202e3802c518cc6066d1067b567c50de3b1edc0d437343db17e311c0ef
SSDEEP 6144:WAMejnmtYZnAmGJ/8uADNFlbF/joovD6fkjOmfPWq6da0npNu:HMimtuAmGJ/85BbFb976s3Wq6d7npU
TLSH
T191D41242F59288BAD438DB34C75B8B35A3D299747A064362838C6C9FEDB9F0787053D8
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 2 IoCs

resource	yara_rule
behavioral1/memory/3808-11-0x0000000010000000-0x0000000010090000-memory.dmp	family_farfli
behavioral1/memory/3808-13-0x0000000010000000-0x0000000010090000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/3808-11-0x0000000010000000-0x0000000010090000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/3808-13-0x0000000010000000-0x0000000010090000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 7 IoCs

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

flow	pid	Process
9	3808	rundll32.exe
14	3808	rundll32.exe
15	3808	rundll32.exe
16	3808	rundll32.exe
40	3808	rundll32.exe
46	3808	rundll32.exe
54	3808	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4072	qfigg.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	qfigg.exe

Loads dropped DLL 1 IoCs

pid	Process
3808	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-1-5-21-2937465464-4167303362-2236413517-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Meture = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\jtjul\\cjsgvguic.dll\",Decompress"	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)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	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)	\??\n:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\t:	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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3808	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\jtjul	qfigg.exe
File created	\??\c:\Program Files\jtjul\cjsgvguic.dll	qfigg.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
4892	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	2026-08-09_a87aea07f2e38f2795069942d85b3b65_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	qfigg.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
4892	cmd.exe
2016	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
2016	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe
3808	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3808	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4728	2026-08-09_a87aea07f2e38f2795069942d85b3b65_elex_wannacry.exe
4072	qfigg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 4892	4728	2026-08-09_a87aea07f2e38f2795069942d85b3b65_elex_wannacry.exe	84
PID 4892 wrote to memory of 2016	4892	cmd.exe	86
PID 4892 wrote to memory of 4072	4892	cmd.exe	88
PID 4072 wrote to memory of 3808	4072	qfigg.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-09_a87aea07f2e38f2795069942d85b3b65_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_a87aea07f2e38f2795069942d85b3b65_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\qfigg.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_a87aea07f2e38f2795069942d85b3b65_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:4892
- - 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:2016
- - C:\Users\Admin\AppData\Local\Temp\qfigg.exe
    C:\Users\Admin\AppData\Local\Temp\\qfigg.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_a87aea07f2e38f2795069942d85b3b65_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:4072
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\jtjul\cjsgvguic.dll",Decompress C:\Users\Admin\AppData\Local\Temp\qfigg.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)
      Suspicious use of NtSetInformationThreadHideFromDebugger
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3808

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

qfigg.exe

Path C:\Users\Admin\AppData\Local\Temp\qfigg.exe
Size 589KB
SHA256 5db9261ea268843c313c073f458d2fb311e930514dfb1cc4e6b9f7d15521e8d4
MD5 4b6a88f0f874dd5f0045cd0750d55ee3
SHA1 319075934b2f634c3651c7874fae1e6bc3339b39
SHA512 4685a17fea96ddd524c623e0754fbf11e5a780869480edde8e4c34aa9bab47b90d891c86f72e821fde654de7e78df14a50045e74fbe7059998c97709ec938138
SSDEEP 6144:WAMejnmtYZnAmGJ/8uADNFlbF/joovD6fkjOmfPWq6da0npNuu:HMimtuAmGJ/85BbFb976s3Wq6d7npUu
TLSH
T1BAD41242F59288BAD439DB34C75B8B35A3D299747A064362838C6C9FEDA9F0787053D8
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cjsgvguic.dll

Path \??\c:\Program Files\jtjul\cjsgvguic.dll
Size 266KB
SHA256 52a751a70b789e75384a8d227aa2f8f905e6202ef43e8c8ac9b97ef3a52f0eed
MD5 d930a7342a32ff87a1f05ae380f934ac
SHA1 ea53b2e9b3418f0dba8ad0df9da5b9e2f6aca910
SHA512 c4e81996d4913351c06b7be71ba8333d1c7f19befe0b14cec33c0a1d2ef312fec1e24d81040b99735f0f28dc29bc8a27a6825095d71a8cfef002590869c50946
SSDEEP 6144:/hJkmMlGAzciA4nhT5ai7Ohk/0BFen/xmH:/hJEQloHOXM4H
TLSH
T1DF4423915B3E34B3FC5F2B327A77E56FFB7422342862899FC78F422165936601019792
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3808-10-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/3808-11-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/3808-13-0x0000000010000000-0x0000000010090000-memory.dmp

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memory/4072-7-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/4728-0-0x0000000000400000-0x0000000000494000-memory.dmp

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memory/4728-2-0x0000000000400000-0x0000000000494000-memory.dmp

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