farfli | 5c02d0ff165d5b89d55a1e2a06888a93cf73d63df7753f0116f8f167bfdb0435

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/09/2026, 23:24

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General

Target
2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_elex_wannacry.exe
Size 273KB
Sample260910-3d63msy1hv
SHA256 5c02d0ff165d5b89d55a1e2a06888a93cf73d63df7753f0116f8f167bfdb0435
MD5 cb84133c7df7b4d7b313fd15a0b06bce
SHA1 ba190a9b820d4ab3af800628c71795b3e65f0790
SHA512 6fdeef02a124ae959a7fd194526fc8d68aca5ece633024c1cf1cd48feefb101f0d5182d4bea5aa8bd17b9c543063a4916f5e803e1d0d804f6f09152b63684478
SSDEEP 6144:H8AbwMmJOyOK5ZV7NHPR519jtr5a8MueZG7HM:PwVJOp8FNprdrMul7s
TLSH
T11254CF11F621C985E4724C3177AE59248764FC19EB4CA243A3F86B0FDC2EE96E93C256
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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 3 IoCs

resource	yara_rule
behavioral1/memory/2228-11-0x0000000010000000-0x000000001003D000-memory.dmp	family_farfli
behavioral1/memory/2228-13-0x0000000010000000-0x000000001003D000-memory.dmp	family_farfli
behavioral1/memory/2228-16-0x0000000010000000-0x000000001003D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/2228-11-0x0000000010000000-0x000000001003D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2228-13-0x0000000010000000-0x000000001003D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2228-16-0x0000000010000000-0x000000001003D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/4936-7-0x0000000000400000-0x000000000043A000-memory.dmp	UPX
behavioral1/files/0x000a000000024559-8.dat	UPX
behavioral1/memory/2228-10-0x0000000010000000-0x000000001003D000-memory.dmp	UPX
behavioral1/memory/2228-11-0x0000000010000000-0x000000001003D000-memory.dmp	UPX
behavioral1/memory/2228-13-0x0000000010000000-0x000000001003D000-memory.dmp	UPX
behavioral1/memory/2228-16-0x0000000010000000-0x000000001003D000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
10	2228	rundll32.exe
16	2228	rundll32.exe
17	2228	rundll32.exe
30	2228	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4936	iednh.exe

Executes dropped EXE 1 IoCs

pid	Process
4936	iednh.exe

Loads dropped DLL 1 IoCs

pid	Process
2228	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\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\cxzqm\\jcgvk.cvj\",RAFlush"	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)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	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 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a000000024559-8.dat	upx
behavioral1/memory/2228-10-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/2228-11-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/2228-13-0x0000000010000000-0x000000001003D000-memory.dmp	upx
behavioral1/memory/2228-16-0x0000000010000000-0x000000001003D000-memory.dmp	upx

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
2628	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	2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_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	iednh.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
2628	cmd.exe
4364	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
4364	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe
2228	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3052	2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_elex_wannacry.exe
4936	iednh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2628	3052	2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_elex_wannacry.exe	85
PID 2628 wrote to memory of 4364	2628	cmd.exe	87
PID 2628 wrote to memory of 4936	2628	cmd.exe	88
PID 4936 wrote to memory of 2228	4936	iednh.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\iednh.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_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:2628
- - 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:4364
- - C:\Users\Admin\AppData\Local\Temp\iednh.exe
    C:\Users\Admin\AppData\Local\Temp\\iednh.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-09_cb84133c7df7b4d7b313fd15a0b06bce_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4936
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\cxzqm\jcgvk.cvj",RAFlush C:\Users\Admin\AppData\Local\Temp\iednh.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:2228

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

iednh.exe

Path C:\Users\Admin\AppData\Local\Temp\iednh.exe
Size 273KB
SHA256 7445df9620b8f5b7081e032ebc5cfdd4eaf8cb0e9979f43dae3524c70cf3e914
MD5 9d42a7bcf93bbe9b6b01095bc3b3beac
SHA1 0b1a877beb20b52f580aeadce9a54662ea813dd8
SHA512 d0d418eb7094ebb1a01648fbefb5a8394d84834bd92fb9532ea66918ffd9bec26055d805198dce8b39fb10a0b86dd12a5fd8978996561d856eb5ee1a1552c0f0
SSDEEP 6144:H8AbwMmJOyOK5ZV7NHPR519jtr5a8MueZG7HD:PwVJOp8FNprdrMul7j
TLSH
T1F654CF11F621C985E4724C3177AE59248764FC19EB4CA243A3F86B0FDC2EE96E93C256
MD5 SHA1 SHA512 SSDEEP TLSH

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jcgvk.cvj

Path \??\c:\cxzqm\jcgvk.cvj
Size 81KB
SHA256 2973a0957bd204e123307415bade58f84cdf272c659048a99bf42dfdb563415a
MD5 fe3b1b222244f783fe9927ff16813c45
SHA1 69c88427b6fe1b75b4f5dc51d7dcce1bc438de9b
SHA512 ad16236d7b0bca4f021d031c8c75c5a339218f6e27dd8be62dfc3719cf945ba832ec6c4c04483622431ed545125415ca03a636a22b2d4f13cc9545fffbe7bd64
SSDEEP 1536:gz2wGkhJuwe4428NPz+Sczth8kgodmbxLhevko1pLHKDwJ:gzzTw4kN7TEtmbFhebJKsJ
TLSH
T1D783AD8AEB9E4B3EE84D4633AD929D31DC27FB5526588F7A43FC102CEE46752B200107
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2228-10-0x0000000010000000-0x000000001003D000-memory.dmp

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memory/2228-11-0x0000000010000000-0x000000001003D000-memory.dmp

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memory/2228-13-0x0000000010000000-0x000000001003D000-memory.dmp

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memory/2228-16-0x0000000010000000-0x000000001003D000-memory.dmp

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memory/3052-0-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/3052-2-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/4936-7-0x0000000000400000-0x000000000043A000-memory.dmp

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