farfli | 9ea222a73101c559b349d01d8616df82b1c78454fbec181492782f4b7f0d82a5

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
03/08/2026, 02:57

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General

Target
2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_elex_wannacry.exe
Size 403KB
Sample260803-dfxvbabl2y
SHA256 9ea222a73101c559b349d01d8616df82b1c78454fbec181492782f4b7f0d82a5
MD5 151398c24c52d0b7188f7507606fd434
SHA1 3ed46c38f6251449336a6dc4b3d2604f1e64b9b3
SHA512 85f6e8da71d1f6b3b73263252750d6e10a20e1a2b39fb935df150d75032c23fa0999e86b386b9f9d946d958f77824998e231c8e02baa8c73b91552025db47e8c
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T1F394AF01E7C351D6DE8225B081FA7376B3789A4D0F12C7E3BB68EE2E6E211D1953B119
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 4 IoCs

resource	yara_rule
behavioral1/memory/636-14-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/636-15-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/636-17-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral1/memory/636-20-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral1/memory/636-14-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/636-15-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/636-17-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/636-20-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/2660-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/memory/2660-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x00060000000231d3-4.dat	UPX
behavioral1/memory/3044-10-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral1/files/0x0008000000024436-11.dat	UPX
behavioral1/memory/636-14-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/636-15-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/636-17-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral1/memory/636-20-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
3044	sbupw.exe

Executes dropped EXE 2 IoCs

pid	Process
3044	sbupw.exe
636	bjnhwk.exe

Loads dropped DLL 1 IoCs

pid	Process
636	bjnhwk.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-1-5-21-1074038928-2032447174-945360078-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VIEW = "c:\\Program Files\\vlnpejjb\\bjnhwk.exe \"c:\\Program Files\\vlnpejjb\\bjnhwk.dll\",Viewer"	bjnhwk.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)	\??\j:	bjnhwk.exe
File opened (read-only)	\??\p:	bjnhwk.exe
File opened (read-only)	\??\q:	bjnhwk.exe
File opened (read-only)	\??\r:	bjnhwk.exe
File opened (read-only)	\??\v:	bjnhwk.exe
File opened (read-only)	\??\a:	bjnhwk.exe
File opened (read-only)	\??\e:	bjnhwk.exe
File opened (read-only)	\??\k:	bjnhwk.exe
File opened (read-only)	\??\m:	bjnhwk.exe
File opened (read-only)	\??\s:	bjnhwk.exe
File opened (read-only)	\??\w:	bjnhwk.exe
File opened (read-only)	\??\z:	bjnhwk.exe
File opened (read-only)	\??\b:	bjnhwk.exe
File opened (read-only)	\??\h:	bjnhwk.exe
File opened (read-only)	\??\t:	bjnhwk.exe
File opened (read-only)	\??\y:	bjnhwk.exe
File opened (read-only)	\??\g:	bjnhwk.exe
File opened (read-only)	\??\l:	bjnhwk.exe
File opened (read-only)	\??\n:	bjnhwk.exe
File opened (read-only)	\??\o:	bjnhwk.exe
File opened (read-only)	\??\u:	bjnhwk.exe
File opened (read-only)	\??\x:	bjnhwk.exe
File opened (read-only)	\??\i:	bjnhwk.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	bjnhwk.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vlnpejjb	sbupw.exe
File created	\??\c:\Program Files\vlnpejjb\bjnhwk.dll	sbupw.exe
File created	\??\c:\Program Files\vlnpejjb\bjnhwk.exe	sbupw.exe
File opened for modification	\??\c:\Program Files\vlnpejjb\bjnhwk.exe	sbupw.exe

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
4172	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	sbupw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bjnhwk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_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
4172	cmd.exe
4832	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	bjnhwk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bjnhwk.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4832	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
636	bjnhwk.exe
636	bjnhwk.exe
636	bjnhwk.exe
636	bjnhwk.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	bjnhwk.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2660	2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_elex_wannacry.exe
3044	sbupw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 4172	2660	2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_elex_wannacry.exe	85
PID 4172 wrote to memory of 4832	4172	cmd.exe	87
PID 4172 wrote to memory of 3044	4172	cmd.exe	88
PID 3044 wrote to memory of 636	3044	sbupw.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\sbupw.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_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:4172
- - 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:4832
- - C:\Users\Admin\AppData\Local\Temp\sbupw.exe
    C:\Users\Admin\AppData\Local\Temp\\sbupw.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-03_151398c24c52d0b7188f7507606fd434_coinminer_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3044
  - - \??\c:\Program Files\vlnpejjb\bjnhwk.exe
      "c:\Program Files\vlnpejjb\bjnhwk.exe" "c:\Program Files\vlnpejjb\bjnhwk.dll",Viewer C:\Users\Admin\AppData\Local\Temp\sbupw.exe
      4⤵
      Executes dropped EXE
      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:636

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

bjnhwk.exe

Path C:\Program Files\vlnpejjb\bjnhwk.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

sbupw.exe

Path C:\Users\Admin\AppData\Local\Temp\sbupw.exe
Size 403KB
SHA256 7ae51d7640c6a5069375c8bcb3eae2932b498847bd9ef79c869bd37a4c24dc5d
MD5 118e1f0720c4b0adc0526878ae1feb90
SHA1 7cf90d81adb88ad2a35cafd3086fa86fb578303d
SHA512 308dbada8e8bd63c0dcf8ebe93e262259bcd49d35eb6bb95dae5a3d5fe20cc581f469172dba51e18aab29a36f33b1ba6c760e905c990b05aaf09810347eb67e1
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH1:zdE3sJd1fm/+yb3OYs84/JH61
TLSH
T1C994AF01E7C351D6DE8225B081FA7376B3789A4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bjnhwk.dll

Path \??\c:\Program Files\vlnpejjb\bjnhwk.dll
Size 89KB
SHA256 6ba8470c48441734ee5dba1e379f9d7ef2480e92b7fd83a8564fe8dce3c11db9
MD5 0929c2fb2ede4f0f5a36d41e6bda789b
SHA1 72b5c5d1712a80d52326bc926187b9d8447606a0
SHA512 0de494a0f75ec4c3d602d79751d6938e50fa5dfabae7180b7566878c65ea914e5f3a5ec9d7600922f6ded355b0fb6ef524a13ff89f0c91f2522e8a6d7773b306
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGO:M1uF6Feu2NlQOBcGO
TLSH
T1229302C45665CD8BCCD87072327FAA4EE631D48CB941ACB34B5E17A31B36AE3D41AB05
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/636-14-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/636-15-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/636-17-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/636-20-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2660-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/2660-2-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3044-10-0x0000000000400000-0x0000000000471000-memory.dmp

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