farfli | e908ed62ceecfc390ba530ca9be8213518370b03abb542b8cfc66fcc19182a3d

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
11/07/2026, 05:50

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General

Target
2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe
Size 104KB
Sample260711-gjxkhaex21
SHA256 e908ed62ceecfc390ba530ca9be8213518370b03abb542b8cfc66fcc19182a3d
MD5 8e43f3756e8f2f18a96677101df45cfa
SHA1 b4c53856ea8b22876a3399f6b760382e19d1274c
SHA512 d5a093493911bccd39bc27638dd2f38b7dd3b9d9df5677dda18da2b42861385948516f47f0b5255f018a190c22554e50141f79f5d6f1351f46c4a6189c36462a
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX47dq:piAXaKDeKNnD36cb8tI7o
TLSH
T196A3AE42ABF087A1E06159B506735B629EB3FC2B2934822777D7B70EAC30F40EE25355
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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
behavioral2/memory/2028-10-0x0000000010001000-0x000000001001E000-memory.dmp	family_farfli
behavioral2/memory/2028-9-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/2028-11-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/2028-12-0x0000000010001000-0x000000001001E000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2028-9-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2028-11-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Badlisted process makes network request 8 IoCs

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

flow	pid	Process
1	2028	rundll32.exe
2	2028	rundll32.exe
3	2028	rundll32.exe
4	2028	rundll32.exe
5	2028	rundll32.exe
6	2028	rundll32.exe
7	2028	rundll32.exe
8	2028	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3756	umhru.exe

Executes dropped EXE 1 IoCs

pid	Process
3756	umhru.exe

Loads dropped DLL 1 IoCs

pid	Process
2028	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-1-5-21-1079202589-886135813-2527035092-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\pezqdi\\abxdj.dll\",GetWindowClass"	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	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

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	2026-07-11_8e43f3756e8f2f18a96677101df45cfa_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	umhru.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
4512	cmd.exe
4700	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4700	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2028	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3172	2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe
3756	umhru.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 4512	3172	2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe	87
PID 4512 wrote to memory of 4700	4512	cmd.exe	89
PID 4512 wrote to memory of 3756	4512	cmd.exe	90
PID 3756 wrote to memory of 2028	3756	umhru.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\umhru.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4512
- - 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:4700
- - \??\c:\umhru.exe
    c:\umhru.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-11_8e43f3756e8f2f18a96677101df45cfa_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3756
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\pezqdi\abxdj.dll",GetWindowClass c:\umhru.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:2028

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

abxdj.dll

Path \??\c:\pezqdi\abxdj.dll
Size 46KB
SHA256 f57f9e54f4774c2b944fb070ae0c2a02cbb4b7686ab3207544c3ccaff0ff3dd9
MD5 a3fd41430ddcaa55fde840788925406a
SHA1 dbdd87f5c1bbf6a6f44c2e2c4744675d5e4e75c2
SHA512 23109572cfc9a282ea3ec84d93bfe02303d27f365ad2d9f47f6234f91da14c64f80133cc5e49746dfcb65d2454b7e7c13eff59ba4bbc18e09d2fb1c630ba59c9
SSDEEP 768:2sUfnvxs6iLlhpfFPtnQf7kifD/v7yb9Bh7Cb0VQJojZC/xjTk:2sJT1qf4W/vub9nnV1jZC/xE
TLSH
T19D2302C8A6F08EF3D2F90B7980E046DCDCFDB939877381150566008E7C71057FA446AA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

umhru.exe

Path \??\c:\umhru.exe
Size 104KB
SHA256 6709e2f565ac1d186112d1662dbb72bcb7905ac216c0ef314c832a46155a4a4e
MD5 61bcce77d31f6d86e504bd12c42fb279
SHA1 3709786b513cd842f855528594ad4c4d10fca0c9
SHA512 79802f0040a265314d603f394efcef9c18c54e07ffc5d8f1ceef8f037ae03a4d077c513eb55230af14e944cafdf052ab616ce2bc234788dc26a3933979b7bd33
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX47dqX:piAXaKDeKNnD36cb8tI7oX
TLSH
T11AA3AE42ABF087A1E06659B506735B629EB3FC2B2934822777D7B70E9C30F40EE25355
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2028-10-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/2028-9-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/2028-11-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/2028-12-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/3172-0-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/3172-2-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/3756-6-0x0000000000400000-0x000000000041A000-memory.dmp

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