farfli | ded8243d977a691c936708b7af9cadccec47a3a8b67dcc7c98ebb15c86ac34c9

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
04/08/2026, 15:46

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General

Target
2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_elex_wannacry.exe
Size 402KB
Sample260804-s75fsstenf
SHA256 ded8243d977a691c936708b7af9cadccec47a3a8b67dcc7c98ebb15c86ac34c9
MD5 52cc6bf21769de8ca63a2a41b479ea8e
SHA1 ce6ff06f19ff53e8a56931b7986364eaa58cbcc2
SHA512 01fa99fb56ae291e4acf8598bd7845d051e1f3ff3d9d8760d44ab821eafaef4784399a9728305723ca657d3a4e1a4c88e6ede2d1b33261d39c5656da71ce6db9
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T15494AF01E78351D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
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 4 IoCs

resource	yara_rule
behavioral1/memory/4968-14-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/4968-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/4968-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/4968-20-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/4968-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4968-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4968-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4968-20-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/1100-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/1100-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x000b00000002430e-4.dat	UPX
behavioral1/files/0x0008000000024555-10.dat	UPX
behavioral1/memory/3968-13-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/4968-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/4968-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/4968-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/4968-20-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
3968	wgvgm.exe

Executes dropped EXE 2 IoCs

pid	Process
3968	wgvgm.exe
4968	otcrtqzck.exe

Loads dropped DLL 1 IoCs

pid	Process
4968	otcrtqzck.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-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\wuvep\\otcrtqzck.exe \"c:\\Program Files\\wuvep\\otcrtqzck.dll\",Viewer"	otcrtqzck.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)	\??\b:	otcrtqzck.exe
File opened (read-only)	\??\j:	otcrtqzck.exe
File opened (read-only)	\??\l:	otcrtqzck.exe
File opened (read-only)	\??\z:	otcrtqzck.exe
File opened (read-only)	\??\e:	otcrtqzck.exe
File opened (read-only)	\??\n:	otcrtqzck.exe
File opened (read-only)	\??\s:	otcrtqzck.exe
File opened (read-only)	\??\u:	otcrtqzck.exe
File opened (read-only)	\??\y:	otcrtqzck.exe
File opened (read-only)	\??\g:	otcrtqzck.exe
File opened (read-only)	\??\i:	otcrtqzck.exe
File opened (read-only)	\??\m:	otcrtqzck.exe
File opened (read-only)	\??\p:	otcrtqzck.exe
File opened (read-only)	\??\q:	otcrtqzck.exe
File opened (read-only)	\??\r:	otcrtqzck.exe
File opened (read-only)	\??\t:	otcrtqzck.exe
File opened (read-only)	\??\x:	otcrtqzck.exe
File opened (read-only)	\??\a:	otcrtqzck.exe
File opened (read-only)	\??\h:	otcrtqzck.exe
File opened (read-only)	\??\k:	otcrtqzck.exe
File opened (read-only)	\??\o:	otcrtqzck.exe
File opened (read-only)	\??\v:	otcrtqzck.exe
File opened (read-only)	\??\w:	otcrtqzck.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	otcrtqzck.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\wuvep\otcrtqzck.exe	wgvgm.exe
File opened for modification	\??\c:\Program Files\wuvep	wgvgm.exe
File created	\??\c:\Program Files\wuvep\otcrtqzck.dll	wgvgm.exe
File created	\??\c:\Program Files\wuvep\otcrtqzck.exe	wgvgm.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
4976	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wgvgm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	otcrtqzck.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_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
4976	cmd.exe
3748	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	otcrtqzck.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	otcrtqzck.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3748	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4968	otcrtqzck.exe
4968	otcrtqzck.exe
4968	otcrtqzck.exe
4968	otcrtqzck.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4968	otcrtqzck.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1100	2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_elex_wannacry.exe
3968	wgvgm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 4976	1100	2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_elex_wannacry.exe	87
PID 4976 wrote to memory of 3748	4976	cmd.exe	89
PID 4976 wrote to memory of 3968	4976	cmd.exe	90
PID 3968 wrote to memory of 4968	3968	wgvgm.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wgvgm.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_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:4976
- - 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:3748
- - C:\Users\Admin\AppData\Local\Temp\wgvgm.exe
    C:\Users\Admin\AppData\Local\Temp\\wgvgm.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-04_52cc6bf21769de8ca63a2a41b479ea8e_coinminer_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:3968
  - - \??\c:\Program Files\wuvep\otcrtqzck.exe
      "c:\Program Files\wuvep\otcrtqzck.exe" "c:\Program Files\wuvep\otcrtqzck.dll",Viewer C:\Users\Admin\AppData\Local\Temp\wgvgm.exe
      4⤵
      Executes dropped EXE
      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:4968

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

otcrtqzck.exe

Path C:\Program Files\wuvep\otcrtqzck.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

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wgvgm.exe

Path C:\Users\Admin\AppData\Local\Temp\wgvgm.exe
Size 402KB
SHA256 658e2381cb9c05b0cd0d82f3946e26b823a35c80cbc9cc701faa62caee022320
MD5 76e47e7928de7bfa984bc9271295aae6
SHA1 58de2688c794ed2fc0079c7d7e42285dcce0eeac
SHA512 1d3b72334b000a760cfa68385b81abd3bb8ce2342fac25ebeca3b174bae0da28498b8e3247ae6be0d725670d48a1f89f1ba1b13f475db9eaa96ad80390490378
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumHh:zdE3sJd1fm/+yb3OYs84/JH6h
TLSH
T13F94AF01E78351D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

otcrtqzck.dll

Path \??\c:\Program Files\wuvep\otcrtqzck.dll
Size 89KB
SHA256 06ed963aa940bc208cb241528802c20ed975eab071d583d03c7da209afaa8ccb
MD5 f2bb14a173cf53ecaf9d58e0e81679ec
SHA1 97830656ded667a0d62b2c170e4a15a83aa3f385
SHA512 569a44a0a7c03ce5975e8e41b0087a58626e83a480e1518fcb14bbdcebb2e9a1fa81e8e51b4b8e130012dfa6d0ba3ea2bb2b9de7273826d8ef09fd37c15726f2
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGF:M1uF6Feu2NlQOBcGF
TLSH
T1989302C45665CD8BCCD87072727FAA4EE631D4CCB981ACB34A5E13A31B36AE3D05A705
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1100-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/1100-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3968-13-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/4968-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/4968-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/4968-17-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/4968-20-0x0000000010000000-0x0000000010033000-memory.dmp

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