farfli | cec3ca14dc3bc27ff64dd393c3f54e619104a34ff2d278a6da60b7c00d475f05

General

Target
2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.exe
Size 122KB
Sample260808-lpjm2sthlb
SHA256 cec3ca14dc3bc27ff64dd393c3f54e619104a34ff2d278a6da60b7c00d475f05
MD5 e3cc6678856716e9121390dc9ce09153
SHA1 d8b01407ff6fcdbb0027d7ecf2d65a189a43a53b
SHA512 999c3c2d13258ab87922ee717db8139eb7c7b97023db103e2526778a1a0617a3ad6e4f3992b4305163305534228d05baa9a7527b5a26e00a6b72ef9eb4e4382c
SSDEEP 1536:f/6EkrKHqgGFs5N6s7H3dPT+X/O3DX6HZ9am1AEgHZ5bdpDvkDBlxZP1no:fSKP3Pe/Oz67aKVgbbdpDcljZ9no
TLSH
T133C3C0927A6085F0E01685331397AB318671AC5E7A1803EF93C8FE0FBD65625EC77299
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 2 IoCs

resource	yara_rule
behavioral2/memory/4320-9-0x0000000010000000-0x0000000010030000-memory.dmp	family_farfli
behavioral2/memory/4320-10-0x0000000010000000-0x0000000010030000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4320-9-0x0000000010000000-0x0000000010030000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4320-10-0x0000000010000000-0x0000000010030000-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
7	4320	rundll32.exe
8	4320	rundll32.exe
9	4320	rundll32.exe
11	4320	rundll32.exe
12	4320	rundll32.exe
15	4320	rundll32.exe
16	4320	rundll32.exe
17	4320	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3684	wzammfwuz.exe

Executes dropped EXE 1 IoCs

pid	Process
3684	wzammfwuz.exe

Loads dropped DLL 1 IoCs

pid	Process
4320	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-1-5-21-1875162379-3804078649-638427191-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\apktb\\wlqmkhngd.dll\",QueryPluginInterface"	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)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	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
behavioral2/memory/4588-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/memory/4588-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/files/0x000f00000001b87e-3.dat	upx
behavioral2/memory/3684-6-0x0000000000400000-0x000000000041E000-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
4704	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wzammfwuz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.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
4704	cmd.exe
4452	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
4452	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4320	rundll32.exe
4320	rundll32.exe
4320	rundll32.exe
4320	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4320	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4588	2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.exe
3684	wzammfwuz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 4704	4588	2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.exe	90
PID 4704 wrote to memory of 4452	4704	cmd.exe	92
PID 4704 wrote to memory of 3684	4704	cmd.exe	93
PID 3684 wrote to memory of 4320	3684	wzammfwuz.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wzammfwuz.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_e3cc6678856716e9121390dc9ce09153_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:4704
- - 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:4452
- - C:\Users\Admin\AppData\Local\Temp\wzammfwuz.exe
    C:\Users\Admin\AppData\Local\Temp\\wzammfwuz.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-08_e3cc6678856716e9121390dc9ce09153_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3684
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\apktb\wlqmkhngd.dll",QueryPluginInterface C:\Users\Admin\AppData\Local\Temp\wzammfwuz.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:4320

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

wzammfwuz.exe

Path C:\Users\Admin\AppData\Local\Temp\wzammfwuz.exe
Size 122KB
SHA256 5798b6b3aa404cc76c7ff0451691cbf191b2539ae02827c77226f87d350afe79
MD5 d56a99825d30d2fff3e413d9077899d3
SHA1 da77d21708d4bd2df51749c97235a46fcccf3b6f
SHA512 408a93e49e886fd6d4887659e8467b261539cb2df8b56e30f8c5fb3f8339a3353335267670dfc30ecdfba5e61a7f0c4c41babda63b11cef2b5d6f7bc00959943
SSDEEP 1536:f/6EkrKHqgGFs5N6s7H3dPT+X/O3DX6HZ9am1AEgHZ5bdpDvkDBlxZP1nH:fSKP3Pe/Oz67aKVgbbdpDcljZ9nH
TLSH
T1E5C3C0927A6085F0E01685331397AB318671EC5E7A1803EF93C8FE0FBD65625EC77299
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

wlqmkhngd.dll

Path \??\c:\apktb\wlqmkhngd.dll
Size 59KB
SHA256 12264670242948b129acc4d9cd80cdf83fac88e662c09a57ce5ac6b39510618d
MD5 8552951ec6ab253e038ffc809235b08c
SHA1 c59e347bfebd96c0e4b60a0d33b5923fb137af55
SHA512 17864dfff89f397c647ec02926cfd639e33a05061cb6164756afd3d8c4e24281cba9c4770d16927ba56e1e02a139faf970748bfe07454f4528eab9f87e2c0cd9
SSDEEP 1536:x0u5H+DyujZ2uoHzCf/IYmRGMJnc7Z4ch:x04eDyY/oH8SIMJncNnh
TLSH
T12843F21CE351855BDAAB0672678F6F407A238A7F5B32485A914C2454BF3BE77C937380
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3684-6-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/4320-9-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/4320-10-0x0000000010000000-0x0000000010030000-memory.dmp

Download

memory/4588-0-0x0000000000400000-0x000000000041E000-memory.dmp

Download

memory/4588-2-0x0000000000400000-0x000000000041E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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