farfli | 92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
21/04/2026, 10:15

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General

Target
92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe
Size 100KB
Sample260421-mab54afw91
SHA256 92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba
MD5 36ad6d61efaf8e6bc59467ebbfb32639
SHA1 40f77a177cc2d65cc697b3f78677111e4c8415db
SHA512 c50a964d6df28a1738d8a32ffa5edb34b9dbcf20220d5199eb0277457054a753e1d1fe2f745a41d184c6eb9c38d1be07db054eb29af1cdb00a457c4fad393f35
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX48:piAXaKDeKNnD36cb8tI8
TLSH
T1DBA3AE42ABF087A1E0619DB506735B629E73FC2B193482277BD6B70EAC34F40EE25355
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
behavioral1/memory/4356-14-0x0000000010001000-0x000000001001E000-memory.dmp	family_farfli
behavioral1/memory/4356-13-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral1/memory/4356-15-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral1/memory/4356-17-0x0000000010001000-0x000000001001E000-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
10	4356	rundll32.exe
14	4356	rundll32.exe
13	4356	rundll32.exe
15	4356	rundll32.exe
20	4356	rundll32.exe
26	4356	rundll32.exe
34	4356	rundll32.exe
35	4356	rundll32.exe
38	4356	rundll32.exe
39	4356	rundll32.exe
48	4356	rundll32.exe
49	4356	rundll32.exe
50	4356	rundll32.exe
51	4356	rundll32.exe
52	4356	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4624	mpkrzngo.exe

Executes dropped EXE 1 IoCs

pid	Process
4624	mpkrzngo.exe

Loads dropped DLL 1 IoCs

pid	Process
4356	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-1-5-21-1609746302-1884177235-1125644204-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\vypcv\\inidgszf.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)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\n:	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)	\??\z:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\h:	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mpkrzngo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.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
4524	cmd.exe
5856	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
5856	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4356	rundll32.exe
4356	rundll32.exe
4356	rundll32.exe
4356	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4356	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5376	92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe
4624	mpkrzngo.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5376 wrote to memory of 4524	5376	92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe	86
PID 4524 wrote to memory of 5856	4524	cmd.exe	88
PID 4524 wrote to memory of 4624	4524	cmd.exe	89
PID 4624 wrote to memory of 4356	4624	mpkrzngo.exe	90

C:\Users\Admin\AppData\Local\Temp\92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe
"C:\Users\Admin\AppData\Local\Temp\92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5376
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\mpkrzngo.exe "C:\Users\Admin\AppData\Local\Temp\92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4524
- - 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:5856
- - \??\c:\mpkrzngo.exe
    c:\mpkrzngo.exe "C:\Users\Admin\AppData\Local\Temp\92e712ddf48fc52c5fe745ca43b81473d9686145e13cf9cfbfecf82632c9bbba.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4624
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\vypcv\inidgszf.dll",GetWindowClass c:\mpkrzngo.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:4356

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

inidgszf.dll

Path C:\vypcv\inidgszf.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

mpkrzngo.exe

Path \??\c:\mpkrzngo.exe
Size 101KB
SHA256 ef7d5d5f945e345fe16714f381fc585035f5fe668b6547fd02d82c48dfa5cc7e
MD5 dc62a636e00b752b9d76c351ac76c507
SHA1 6ef1e30d0d730fe84e57cf82a609b2f9b7e5ebc9
SHA512 5d848abf140528940a81b878cbd5dae20e47f18dbbfb5a1f4ce0fa9347e03eab9ed1221dd89d544007fe2a20facedf79f96357ac482936cf5059da5b0d059cc4
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX48+:piAXaKDeKNnD36cb8tI8+
TLSH
T1C2A39D42ABF087A1E0619DB506735B629E73FC2B193482277BD6B70EAC34F40EE25355
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4356-17-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/4356-16-0x0000000000A60000-0x0000000000ADB000-memory.dmp

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memory/4356-15-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4356-14-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/4356-13-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4624-7-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/4624-10-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/4624-9-0x0000000000440000-0x00000000004BB000-memory.dmp

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memory/5376-0-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/5376-2-0x00000000005B0000-0x000000000062B000-memory.dmp

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memory/5376-3-0x0000000000400000-0x000000000041A000-memory.dmp

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