farfli | f44919b3e79a410694b66719e7a048b1eeee220292b76801bd0145d046b2acf5

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
09/11/2026, 23:14

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General

Target
2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_elex_wannacry.exe
Size 405KB
Sample261109-2772csbc23
SHA256 f44919b3e79a410694b66719e7a048b1eeee220292b76801bd0145d046b2acf5
MD5 9bd716bcd86fc865f6a3977c41f8e31b
SHA1 45b0febf87cf8d992adedb7a0c12c1040a0f5b12
SHA512 f79a9c5e080d6521254983a147d81efb7b26002df6a17a6502d4d177b411c516638875199b6cb7c93359fd914607d06340d1f6f8366eb554b0749eaef873d8b6
SSDEEP 6144:JtecHBTSpjVfs3mCL17O/cvARZZWcStoWwABr8iXpXxr2kDQH/9M:nHBTwjBqbYkvqZMcV7i32ie
TLSH
T1E294CF2332C1C8B7C1D17373FEE2AA72E3F5C2A85D356A7753EA014D1E2744C92562A9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli persistence spyware stealer upx

Malware Config

Signatures

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

Detects Farfli Backdoor 5 IoCs

resource	yara_rule
behavioral1/memory/1020-19-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral1/memory/1020-16-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral1/memory/1020-21-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral1/memory/1020-23-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli
behavioral1/memory/1020-26-0x0000000010000000-0x000000001005A000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 5 IoCs

resource	yara_rule
behavioral1/memory/1020-19-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1020-16-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1020-21-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1020-23-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1020-26-0x0000000010000000-0x000000001005A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5032	gicvp.exe

Executes dropped EXE 2 IoCs

pid	Process
5032	gicvp.exe
1020	jyuhytf.exe

Loads dropped DLL 1 IoCs

pid	Process
1020	jyuhytf.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-1-5-21-681733028-2344970462-962213935-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DESIME = "c:\\Program Files\\crfpwjuqp\\jyuhytf.exe \"c:\\Program Files\\crfpwjuqp\\jyuhytf.dll\",DoPrivacy"	jyuhytf.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)	\??\u:	jyuhytf.exe
File opened (read-only)	\??\y:	jyuhytf.exe
File opened (read-only)	\??\z:	jyuhytf.exe
File opened (read-only)	\??\h:	jyuhytf.exe
File opened (read-only)	\??\i:	jyuhytf.exe
File opened (read-only)	\??\k:	jyuhytf.exe
File opened (read-only)	\??\t:	jyuhytf.exe
File opened (read-only)	\??\x:	jyuhytf.exe
File opened (read-only)	\??\a:	jyuhytf.exe
File opened (read-only)	\??\e:	jyuhytf.exe
File opened (read-only)	\??\j:	jyuhytf.exe
File opened (read-only)	\??\o:	jyuhytf.exe
File opened (read-only)	\??\p:	jyuhytf.exe
File opened (read-only)	\??\r:	jyuhytf.exe
File opened (read-only)	\??\s:	jyuhytf.exe
File opened (read-only)	\??\v:	jyuhytf.exe
File opened (read-only)	\??\b:	jyuhytf.exe
File opened (read-only)	\??\l:	jyuhytf.exe
File opened (read-only)	\??\m:	jyuhytf.exe
File opened (read-only)	\??\n:	jyuhytf.exe
File opened (read-only)	\??\w:	jyuhytf.exe
File opened (read-only)	\??\g:	jyuhytf.exe
File opened (read-only)	\??\q:	jyuhytf.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	jyuhytf.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1808-0-0x0000000000400000-0x0000000000499000-memory.dmp	upx
behavioral1/memory/1808-2-0x0000000000400000-0x0000000000499000-memory.dmp	upx
behavioral1/files/0x000900000002452d-4.dat	upx
behavioral1/memory/5032-6-0x0000000000400000-0x0000000000499000-memory.dmp	upx
behavioral1/memory/5032-11-0x0000000000400000-0x0000000000499000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\crfpwjuqp\jyuhytf.dll	gicvp.exe
File created	\??\c:\Program Files\crfpwjuqp\jyuhytf.exe	gicvp.exe
File opened for modification	\??\c:\Program Files\crfpwjuqp\jyuhytf.exe	gicvp.exe
File opened for modification	\??\c:\Program Files\crfpwjuqp	gicvp.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
4660	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	2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_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	gicvp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jyuhytf.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
4660	cmd.exe
3924	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	jyuhytf.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	jyuhytf.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3924	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1020	jyuhytf.exe
1020	jyuhytf.exe
1020	jyuhytf.exe
1020	jyuhytf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1020	jyuhytf.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1808	2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_elex_wannacry.exe
5032	gicvp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 4660	1808	2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_elex_wannacry.exe	84
PID 4660 wrote to memory of 3924	4660	cmd.exe	86
PID 4660 wrote to memory of 5032	4660	cmd.exe	88
PID 5032 wrote to memory of 1020	5032	gicvp.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\gicvp.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_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:4660
- - 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:3924
- - C:\Users\Admin\AppData\Local\Temp\gicvp.exe
    C:\Users\Admin\AppData\Local\Temp\\gicvp.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-09_9bd716bcd86fc865f6a3977c41f8e31b_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:5032
  - - \??\c:\Program Files\crfpwjuqp\jyuhytf.exe
      "c:\Program Files\crfpwjuqp\jyuhytf.exe" "c:\Program Files\crfpwjuqp\jyuhytf.dll",DoPrivacy C:\Users\Admin\AppData\Local\Temp\gicvp.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:1020

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

Indicator Removal

T1070

File Deletion

T1070.004

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

gicvp.exe

Path C:\Users\Admin\AppData\Local\Temp\gicvp.exe
Size 405KB
SHA256 282c5f0dd1a62afb15249cd540cd3452e60a84d69185927e9b2dbd67ead669e7
MD5 a17d9786705a79130cb2d247e3a5cc50
SHA1 33ac27a0bb2b8fe92cf1d745ee79f23a3e301726
SHA512 943626df74287eb3779dd9cab190739a28d7cef524dcc923b49fc6b79e4cae1e31a999242a71fdff496d603cc8d8d5d6e57f2d40222f5855ac42e0ca068b723c
SSDEEP 6144:JtecHBTSpjVfs3mCL17O/cvARZZWcStoWwABr8iXpXxr2kDQH/9Mn:nHBTwjBqbYkvqZMcV7i32iem
TLSH
T16294CF2332C1C8B7C1D17373FEE2AA72E3F5C2A85D356A7753EA014D1E2744C92562A9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

jyuhytf.dll

Path \??\c:\Program Files\crfpwjuqp\jyuhytf.dll
Size 219KB
SHA256 7fd7f791284f769fb1c00e027542a88171bc3f65ef0d6d5adeecf1113e9c9f5d
MD5 dc715ff2145856bbde08e195a9cc5c88
SHA1 731fa913c372d65fea8a67c398202b2aa73c9eb9
SHA512 f22b3cc0d93bd8306bcba82201c6ecb70e7cabb9d13ea8b778a411a0efb273edf42d7eb708951cde1a8888ce0f759f93450bbaa07db662b50860e630d09e6fdd
SSDEEP 6144:XxDink0qeQKc/A8MNfnX2p2KL5aI3iMKO:XAk9uNfnX2p2Q5aIxT
TLSH
T1722413C4FF52EECEE8610AF03B4FA265DF71586BC48202C114EE58535A65EB3F695B01
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

jyuhytf.exe

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

Submit Download

memory/1020-18-0x0000000000850000-0x0000000000851000-memory.dmp

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memory/1020-15-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1020-19-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1020-16-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1020-21-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1020-23-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1020-26-0x0000000010000000-0x000000001005A000-memory.dmp

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memory/1808-2-0x0000000000400000-0x0000000000499000-memory.dmp

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memory/1808-0-0x0000000000400000-0x0000000000499000-memory.dmp

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memory/5032-11-0x0000000000400000-0x0000000000499000-memory.dmp

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memory/5032-6-0x0000000000400000-0x0000000000499000-memory.dmp

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