farfli | 544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33

Analysis

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

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
30/07/2026, 08:24

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General

Target
544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.exe
Size 287KB
Sample260730-ka695axyav
SHA256 544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33
MD5 fa5ac0423d06f9206683ba734de127ea
SHA1 7e798611b44896138f22da96cbb4301b525d3661
SHA512 887ac63057a868f73cae25df3591ff2ff7c480bca0ec5c2702a2e8442726b19433ab753cf098ff34cc4052d86fc4331d2021260d87f3e2b5f24e1ab32a8a19b2
SSDEEP 6144:gQJf3uMxrbLgEN6S7KzA5x3S5+y3D82oC0UdkgxgfOqsG7Hc:nJ130ENL7kArI+y3XipfOK78
TLSH
T1615412A01A64D42FE0A50572D79AE23266F0EC817C620B2797E0BF1EB6D440FF935736
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/4664-17-0x0000000010000000-0x0000000010054000-memory.dmp	family_farfli
behavioral1/memory/4664-21-0x0000000010000000-0x0000000010054000-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	4664	rundll32.exe
6	4664	rundll32.exe
12	4664	rundll32.exe
13	4664	rundll32.exe
15	4664	rundll32.exe
20	4664	rundll32.exe
30	4664	rundll32.exe
37	4664	rundll32.exe
45	4664	rundll32.exe
48	4664	rundll32.exe
51	4664	rundll32.exe
54	4664	rundll32.exe
59	4664	rundll32.exe
62	4664	rundll32.exe
63	4664	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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	rundll32.exe

Deletes itself 1 IoCs

pid	Process
408	ahjjz.exe

Executes dropped EXE 3 IoCs

pid	Process
408	ahjjz.exe
3800	wiseman.exe
2348	wiseman.exe

Loads dropped DLL 1 IoCs

pid	Process
4664	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-1-5-21-204488895-2999877624-296153668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Wiseman = "C:\\wiseman.exe"	wiseman.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\tkmgeve\\mvyswz.vsm\",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)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\p:	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)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	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
1688	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	wiseman.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wiseman.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.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	ahjjz.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
1688	cmd.exe
412	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
412	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe
4664	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	rundll32.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1464	544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.exe
408	ahjjz.exe
3800	wiseman.exe
2348	wiseman.exe
3800	wiseman.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1688	1464	544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.exe	86
PID 1688 wrote to memory of 412	1688	cmd.exe	88
PID 1688 wrote to memory of 408	1688	cmd.exe	89
PID 408 wrote to memory of 4664	408	ahjjz.exe	90
PID 4664 wrote to memory of 3800	4664	rundll32.exe	91

C:\Users\Admin\AppData\Local\Temp\544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.exe
"C:\Users\Admin\AppData\Local\Temp\544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1464
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ahjjz.exe "C:\Users\Admin\AppData\Local\Temp\544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.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:1688
- - 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:412
- - C:\Users\Admin\AppData\Local\Temp\ahjjz.exe
    C:\Users\Admin\AppData\Local\Temp\\ahjjz.exe "C:\Users\Admin\AppData\Local\Temp\544b67bd015bfb9839fe25d8ecfff28b08cf44f5c351ab0633b3ab58e9ee7b33.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:408
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\tkmgeve\mvyswz.vsm",RAFlush C:\Users\Admin\AppData\Local\Temp\ahjjz.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:4664
    - - 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:3800

C:\wiseman.exe
C:\wiseman.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2348

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

ahjjz.exe

Path C:\Users\Admin\AppData\Local\Temp\ahjjz.exe
Size 287KB
SHA256 6cb96eb74ac03bdfb2b4a6dc829cdd306abada893431765a30c55c41e954593a
MD5 060ba60bed782e39e1a3c676bb6bcd72
SHA1 a157636461bf261afcafc90cbbd1ef5c78854984
SHA512 064936361d54dfac1da9a21f7eba511165474b82f663e8c8fe28ed5764ca43814692909a70c3794565e98215c1d71e7d175cc85a56d601a547d390b0c6d85d73
SSDEEP 6144:gQJf3uMxrbLgEN6S7KzA5x3S5+y3D82oC0UdkgxgfOqsG7Hy:nJ130ENL7kArI+y3XipfOK7S
TLSH
T1EA5412A01A64D42FE0A50472D79AE23266F0EC817C660B2797E0BF0EB6D440FF935736
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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mvyswz.vsm

Path \??\c:\tkmgeve\mvyswz.vsm
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/408-9-0x0000000000400000-0x000000000049E01B-memory.dmp

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memory/1464-0-0x0000000000400000-0x000000000049E01B-memory.dmp

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memory/1464-2-0x0000000000400000-0x000000000049E01B-memory.dmp

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memory/4664-12-0x0000000010000000-0x0000000010054000-memory.dmp

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memory/4664-17-0x0000000010000000-0x0000000010054000-memory.dmp

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memory/4664-21-0x0000000010000000-0x0000000010054000-memory.dmp

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