farfli | a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2

Analysis

max time kernel
150s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
09/05/2026, 09:49

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General

Target
a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe
Size 101KB
Sample260509-ltsrhset4t
SHA256 a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2
MD5 816ae0d1ee68f4f449aad74fca7a9bed
SHA1 ee41719b07c95685cb9785c218a64587f7a26656
SHA512 f7011affd7f8d3c8c24a68f3d3956ca933a80986959c94e4c6e087de734d0a8c606529500adc0ef437a22e4ce341d6665515137b64d0c04dfdd16a4fd3bf0e57
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX48X:piAXaKDeKNnD36cb8tI8X
TLSH
T122A3AE42ABF087A1E0619DB506735B629E73FC2B193482677BD6B70EAC34F40EE21355
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/4528-13-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/4528-14-0x0000000010001000-0x000000001001E000-memory.dmp	family_farfli
behavioral2/memory/4528-15-0x0000000010000000-0x000000001002E000-memory.dmp	family_farfli
behavioral2/memory/4528-17-0x0000000010001000-0x000000001001E000-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
1	4528	rundll32.exe
2	4528	rundll32.exe
3	4528	rundll32.exe
4	4528	rundll32.exe
5	4528	rundll32.exe
6	4528	rundll32.exe
7	4528	rundll32.exe
8	4528	rundll32.exe
9	4528	rundll32.exe
10	4528	rundll32.exe
13	4528	rundll32.exe
14	4528	rundll32.exe
15	4528	rundll32.exe
16	4528	rundll32.exe
17	4528	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4812	qpccn.exe

Executes dropped EXE 1 IoCs

pid	Process
4812	qpccn.exe

Loads dropped DLL 1 IoCs

pid	Process
4528	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-1-5-21-1456842261-3464001825-2855069093-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\yugdc\\dpyxrtm.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)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	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)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\k:	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	a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.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	qpccn.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
4284	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 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
4452	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4528	rundll32.exe
4528	rundll32.exe
4528	rundll32.exe
4528	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4528	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
492	a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe
4812	qpccn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 492 wrote to memory of 4284	492	a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe	78
PID 4284 wrote to memory of 4452	4284	cmd.exe	80
PID 4284 wrote to memory of 4812	4284	cmd.exe	81
PID 4812 wrote to memory of 4528	4812	qpccn.exe	82

C:\Users\Admin\AppData\Local\Temp\a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe
"C:\Users\Admin\AppData\Local\Temp\a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:492
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\qpccn.exe "C:\Users\Admin\AppData\Local\Temp\a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4284
- - 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:\qpccn.exe
    c:\qpccn.exe "C:\Users\Admin\AppData\Local\Temp\a287543c0b3350b6bd1ff46fae6455a9f3ed642d329774b669d8488f982062a2.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4812
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\yugdc\dpyxrtm.dll",GetWindowClass c:\qpccn.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:4528

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

qpccn.exe

Path C:\qpccn.exe
Size 102KB
SHA256 1e7b3bfe10bbcc2da68e05fcdc85e9a535be3b50676012f2dfed93921a524867
MD5 67780ae8cebbe83f0c841df179100266
SHA1 62231f51fee05e3ef71e26de060fe41e8949f186
SHA512 91a28e250876f906377a30b595701d27c7e7f58ada5041bd0ae63c1c517cd4572259a4e7b27b3446848c7dad296868ccbac104639551b5f1715c1789d5408e41
SSDEEP 1536:vRiAXaKD5gxzmwYEM/D3ozc4I8JboecWtX48K:piAXaKDeKNnD36cb8tI8K
TLSH
T1FFA3AE42ABF087A1E0619DB506735B629E73FC2B193482277BD6B70EAC34F40EE25355
MD5 SHA1 SHA512 SSDEEP TLSH

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dpyxrtm.dll

Path C:\yugdc\dpyxrtm.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

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memory/492-3-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/492-2-0x0000000000770000-0x00000000007EA000-memory.dmp

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memory/492-0-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/4528-14-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/4528-13-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4528-15-0x0000000010000000-0x000000001002E000-memory.dmp

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memory/4528-16-0x0000000002730000-0x00000000027AA000-memory.dmp

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memory/4528-17-0x0000000010001000-0x000000001001E000-memory.dmp

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memory/4812-9-0x0000000000850000-0x00000000008CA000-memory.dmp

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memory/4812-10-0x0000000000400000-0x000000000041A000-memory.dmp

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memory/4812-7-0x0000000000400000-0x000000000041A000-memory.dmp

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