farfli | 39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
15/08/2026, 12:30

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General

Target
39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.exe
Size 282KB
Sample260815-ppv8maxsgw
SHA256 39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee
MD5 820af90bb92d6ce3f75384b5e1ad690c
SHA1 ad7ecf5a66a6bfdb874d7eef8727397a7c25e22e
SHA512 10b6879a8b95b8d8b42d954124b782cf4e2d7ee161430a910aff1afa07d7f9db5b3c56dfb3200135564a5c1bc99e9a9a288a561d66c7aa4f96a96889d125fcee
SSDEEP 6144:gQJf3uMxrbLgEN6S7KzA5x3S5+y3D82oC0UdkgxgfOqsG7HP:nJ130ENL7kArI+y3XipfOK7v
TLSH
T15B5412E02A58C41FF0A10572D5A976336BB1DCC0AC6607279BD17B1EB9E541BFA34732
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 2 IoCs

resource	yara_rule
behavioral1/memory/4844-17-0x0000000010000000-0x0000000010054000-memory.dmp	family_farfli
behavioral1/memory/4844-22-0x0000000010000000-0x0000000010054000-memory.dmp	family_farfli

Badlisted process makes network request 15 IoCs

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

flow	pid	Process
5	4844	rundll32.exe
6	4844	rundll32.exe
13	4844	rundll32.exe
14	4844	rundll32.exe
16	4844	rundll32.exe
19	4844	rundll32.exe
23	4844	rundll32.exe
30	4844	rundll32.exe
37	4844	rundll32.exe
48	4844	rundll32.exe
54	4844	rundll32.exe
60	4844	rundll32.exe
64	4844	rundll32.exe
67	4844	rundll32.exe
70	4844	rundll32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2416	eoayg.exe

Executes dropped EXE 3 IoCs

pid	Process
2416	eoayg.exe
2892	wiseman.exe
4120	wiseman.exe

Loads dropped DLL 1 IoCs

pid	Process
4844	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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wiseman = "C:\\wiseman.exe"	wiseman.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\wmgok\\uumqx.uqu\",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)	\??\i:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	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)	\??\v:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\w:	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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
4968	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	eoayg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wiseman.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wiseman.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.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
4968	cmd.exe
4016	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
4016	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe
4844	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4844	rundll32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2564	39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.exe
2416	eoayg.exe
2892	wiseman.exe
4120	wiseman.exe
2892	wiseman.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2564 wrote to memory of 4968	2564	39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.exe	87
PID 4968 wrote to memory of 4016	4968	cmd.exe	89
PID 4968 wrote to memory of 2416	4968	cmd.exe	90
PID 2416 wrote to memory of 4844	2416	eoayg.exe	91
PID 4844 wrote to memory of 2892	4844	rundll32.exe	92

C:\Users\Admin\AppData\Local\Temp\39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.exe
"C:\Users\Admin\AppData\Local\Temp\39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2564
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\eoayg.exe "C:\Users\Admin\AppData\Local\Temp\39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.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:4968
- - 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:4016
- - C:\Users\Admin\AppData\Local\Temp\eoayg.exe
    C:\Users\Admin\AppData\Local\Temp\\eoayg.exe "C:\Users\Admin\AppData\Local\Temp\39efa3a2a9af9c5806480859090dc29437141ad1d113d2fb6987cea32b2d69ee.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2416
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\wmgok\uumqx.uqu",RAFlush C:\Users\Admin\AppData\Local\Temp\eoayg.exe
      4⤵
      Badlisted process makes network request
      Checks computer location settings
      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
      Suspicious use of WriteProcessMemory
      PID:4844
    - - C:\wiseman.exe
        
        "C:\wiseman.exe"
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2892

C:\wiseman.exe
C:\wiseman.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:4120

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

eoayg.exe

Path C:\Users\Admin\AppData\Local\Temp\eoayg.exe
Size 282KB
SHA256 c499cf90406ff4be431d613e60f26989003dd75f1717950f42af8af9c96edf76
MD5 fc6bc7c8208dc25d1db0773c30ce8703
SHA1 83039c6c637ad636a0240e7fb19f374440ce8b77
SHA512 20ff1f9b28c776775cd145e1032370424f718c6f492316831e818b681306ee8544ad0fb45325dfcf2a9795cdf7c64755e161ea31beca3587972dfcb423721001
SSDEEP 6144:gQJf3uMxrbLgEN6S7KzA5x3S5+y3D82oC0UdkgxgfOqsG7HK:nJ130ENL7kArI+y3XipfOK7q
TLSH
T14B5412A02A68C41FF0A10572D59976336BF1DCC0AC650B279BD1BB1EB9E541BFA34732
MD5 SHA1 SHA512 SSDEEP TLSH

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wiseman.exe

Path C:\wiseman.exe
Size 378KB
SHA256 03505198d487e04a8ec82c627d34e4d9145f211140c4c8793b4461621e6bf6ce
MD5 8f242369cf14f2b26ced131d7dd67144
SHA1 d4f2f0f3047300ff5f36af6119ad5e109258fcd0
SHA512 4516b3fa2f68e64baf166bc7731ba3bb0ca53d36d71ff8fa78b1f211d7c14fc4442af50bd637d0c3f11913583c9c66996101d6e8738592a053e82a78bbd771f5
SSDEEP 6144:yraxNx1Gc9N6xJ/MO2N89M4qjGggUA0CthK1KLAb+AfQQIh+K+TuAubWq49OU/CU:ygVhNrAM1qgg2l
TLSH
T14B844C2152C61426E16B8232B4F7E3FAB53F940A56126BEBBB9CFE34C54E4533532349
MD5 SHA1 SHA512 SSDEEP TLSH

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uumqx.uqu

Path \??\c:\wmgok\uumqx.uqu
Size 155KB
SHA256 ec6ef50587a847d4a655e9bfc5c1aee4078005c0774a3e6fa23949cc4d8fbad3
MD5 20e7a8b973ac2b43c95ddb77308266c9
SHA1 e46e6ea272ae628d15bfb7b71ff40e3950fd2e85
SHA512 60b585b2de46ac412577eb590916d282bf3f25ba1196362a97c12620c3b6eb94a78e3faac182305002790bb9c3705a346e54508b644d3e9329201fcb4bad0fd6
SSDEEP 3072:YuTByM2ViNpg032aUgrhoiFmyt8KDZS1:ZByMnN+3d1
TLSH
T10FF36D1163FD4618F5F7BF356EB54A605E3ABC62AE38CB0C1650504E59B1F60DAB0B23
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2416-9-0x0000000000400000-0x000000000049E01B-memory.dmp

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memory/2564-0-0x0000000000400000-0x000000000049E01B-memory.dmp

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memory/2564-2-0x0000000000400000-0x000000000049E01B-memory.dmp

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memory/4844-12-0x0000000010000000-0x0000000010054000-memory.dmp

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memory/4844-17-0x0000000010000000-0x0000000010054000-memory.dmp

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memory/4844-22-0x0000000010000000-0x0000000010054000-memory.dmp

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