farfli | 8abffcd8039b3a1d66701328e646ea9aadcb1b7a85c9e8f116dbaf9a4f58c3c2

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/07/2026, 22:24

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General

Target
2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe
Size 295KB
Sample260702-2be1pscv6k
SHA256 8abffcd8039b3a1d66701328e646ea9aadcb1b7a85c9e8f116dbaf9a4f58c3c2
MD5 ec4e7ac0a26892f860e2fa83e7f9c066
SHA1 42845d22428957c8b0c8b064a9621cf677791da6
SHA512 3603bcdfa18073b1f6635bc7664c84dce449869aeb7466a7dba427d2832fd012005c76c82371262e58b1100acdf2b10a306026a7a9c4ec0305b34c8f5caa4480
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T1F9540282E502DF07EC3FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer upx

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 6 IoCs

resource	yara_rule
behavioral1/memory/976-14-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/976-11-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/976-16-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/976-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/976-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral1/memory/976-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 6 IoCs

resource	yara_rule
behavioral1/memory/976-14-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/976-11-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/976-16-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/976-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/976-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/976-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2984-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral1/memory/2984-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral1/files/0x000c00000002432e-5.dat	UPX
behavioral1/memory/2316-7-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
13	976	rundll32.exe
18	976	rundll32.exe
19	976	rundll32.exe
20	976	rundll32.exe
31	976	rundll32.exe
32	976	rundll32.exe
38	976	rundll32.exe
44	976	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2316	fvkyx.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	fvkyx.exe

Loads dropped DLL 1 IoCs

pid	Process
976	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-1-5-21-204488895-2999877624-296153668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\edxejkprk\\vreix.dll\",GetProc"	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	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)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	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)	\??\b:	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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2984-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/memory/2984-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral1/files/0x000c00000002432e-5.dat	upx
behavioral1/memory/2316-7-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\edxejkprk	fvkyx.exe
File created	\??\c:\Program Files\edxejkprk\vreix.dll	fvkyx.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	fvkyx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_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
4264	PING.EXE
3852	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
4264	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
976	rundll32.exe
976	rundll32.exe
976	rundll32.exe
976	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	976	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2984	2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe
2316	fvkyx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 3852	2984	2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe	86
PID 3852 wrote to memory of 4264	3852	cmd.exe	88
PID 3852 wrote to memory of 2316	3852	cmd.exe	89
PID 2316 wrote to memory of 976	2316	fvkyx.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\fvkyx.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3852
- - 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:4264
- - C:\Users\Admin\AppData\Local\Temp\fvkyx.exe
    C:\Users\Admin\AppData\Local\Temp\\fvkyx.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-02_ec4e7ac0a26892f860e2fa83e7f9c066_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:2316
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\edxejkprk\vreix.dll",GetProc C:\Users\Admin\AppData\Local\Temp\fvkyx.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:976

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

fvkyx.exe

Path C:\Users\Admin\AppData\Local\Temp\fvkyx.exe
Size 295KB
SHA256 7157ce1886658afb75c3be80f0642c659078188b13502c7442ddd40fa12e898d
MD5 d71311c58470d75b8f11a0eb4869738d
SHA1 3413ff1963fb8b795d17c0b621442709ee45184e
SHA512 49da86e23aa7b447d7085637364d833f59482a5f5e9a222cabc257262dad39db399a185c06a7d24d26c7ac2222eb2d3559a4110eecfe86737c285c99304eeca4
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOG:ywLcCmuErglr73aAD+b
TLSH
T1B4540282E502DF07EC3FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vreix.dll

Path \??\c:\Program Files\edxejkprk\vreix.dll
Size 218KB
SHA256 d3aa6637bcce9ed4c9d63c9d446b561ea4454fe6a27fc0650d3da75bb99bd357
MD5 7a6ae31c79e9126cd489ff49ac43d2cb
SHA1 e72e2e6980b67d002df84b172c09308976fd5bd4
SHA512 1798e5d86efcab32efd8443325d2be8f987106c2fb7e4f553d831ce9bed418977cd3b3e9df060aae77ec93b0b96d012ce04529a425be91455f957c21aced50f5
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauytT:pnNwDTi3swddDiROXIN
TLSH
T17824128BCF983873C5223379597911A0B9725290AFA1530D93E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/976-16-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/976-10-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/976-14-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/976-13-0x0000000000F30000-0x0000000000F31000-memory.dmp

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memory/976-11-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/976-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/976-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/976-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/2316-7-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/2984-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/2984-0-0x0000000000400000-0x0000000000483000-memory.dmp

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