farfli | 946b448ee6777a7889a10c4e47fe33aaec11e9a72443db2af410279451fb5bc1

Analysis

max time kernel
149s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
25/09/2026, 23:03

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General

Target
2026-09-25_8e3102624920e79a4d7802c8e59efce5_coinminer_elex_wannacry.exe
Size 232KB
Sample260925-215mnayeka
SHA256 946b448ee6777a7889a10c4e47fe33aaec11e9a72443db2af410279451fb5bc1
MD5 8e3102624920e79a4d7802c8e59efce5
SHA1 521c0be3cea094ab2b403192e5d0dc0cecf58b81
SHA512 e6b75d2add7ca37262a1a12e86e4aacf48fe531371e19bb4c2b2b4e5afad7403a3b4759884cfe5b16f509a081c2e290ddc876aa288a939dc19b7c578104532a2
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T1BD34F18136A6CD77F0621B7E4D7B163B8536BE651B00B48BD3C4AD4FB4319E46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

98.126.40.18:3204
http://98.126.40.19:805/index.php
http://98.126.40.20:803/

Attributes

user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C))

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0)

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli
Family: Gh0strat
Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.
rat gh0strat

Detects Farfli Backdoor 2 IoCs

resource	yara_rule
behavioral1/memory/4488-15-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral1/memory/4488-18-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/4488-15-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/4488-18-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/3672-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/memory/3672-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/files/0x0020000000024405-4.dat	UPX
behavioral1/memory/3480-11-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
3480	bcsfwx.exe

Executes dropped EXE 2 IoCs

pid	Process
3480	bcsfwx.exe
4488	lfrhinysr.exe

Loads dropped DLL 1 IoCs

pid	Process
4488	lfrhinysr.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-1-5-21-524788801-3318743092-4051225893-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\vtskbfjiu\\lfrhinysr.exe \"c:\\Program Files\\vtskbfjiu\\lfrhinysr.dll\",Interface"	lfrhinysr.exe

Enumerates connected drives 3 TTPs 24 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
	\??\f:\	lfrhinysr.exe
File opened (read-only)	\??\i:	lfrhinysr.exe
File opened (read-only)	\??\l:	lfrhinysr.exe
File opened (read-only)	\??\q:	lfrhinysr.exe
File opened (read-only)	\??\s:	lfrhinysr.exe
File opened (read-only)	\??\w:	lfrhinysr.exe
File opened (read-only)	\??\x:	lfrhinysr.exe
File opened (read-only)	\??\z:	lfrhinysr.exe
File opened (read-only)	\??\g:	lfrhinysr.exe
File opened (read-only)	\??\k:	lfrhinysr.exe
File opened (read-only)	\??\o:	lfrhinysr.exe
File opened (read-only)	\??\p:	lfrhinysr.exe
File opened (read-only)	\??\r:	lfrhinysr.exe
File opened (read-only)	\??\t:	lfrhinysr.exe
File opened (read-only)	\??\a:	lfrhinysr.exe
File opened (read-only)	\??\b:	lfrhinysr.exe
File opened (read-only)	\??\e:	lfrhinysr.exe
File opened (read-only)	\??\h:	lfrhinysr.exe
File opened (read-only)	\??\m:	lfrhinysr.exe
File opened (read-only)	\??\u:	lfrhinysr.exe
File opened (read-only)	\??\y:	lfrhinysr.exe
File opened (read-only)	\??\j:	lfrhinysr.exe
File opened (read-only)	\??\n:	lfrhinysr.exe
File opened (read-only)	\??\v:	lfrhinysr.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	lfrhinysr.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vtskbfjiu\lfrhinysr.exe	bcsfwx.exe
File opened for modification	\??\c:\Program Files\vtskbfjiu	bcsfwx.exe
File created	\??\c:\Program Files\vtskbfjiu\lfrhinysr.dll	bcsfwx.exe
File created	\??\c:\Program Files\vtskbfjiu\lfrhinysr.exe	bcsfwx.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
3696	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	bcsfwx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lfrhinysr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-09-25_8e3102624920e79a4d7802c8e59efce5_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
5000	PING.EXE
3696	cmd.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	lfrhinysr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	lfrhinysr.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5000	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4488	lfrhinysr.exe
4488	lfrhinysr.exe
4488	lfrhinysr.exe
4488	lfrhinysr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4488	lfrhinysr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3672	2026-09-25_8e3102624920e79a4d7802c8e59efce5_coinminer_elex_wannacry.exe
3480	bcsfwx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 3696	3672	2026-09-25_8e3102624920e79a4d7802c8e59efce5_coinminer_elex_wannacry.exe	86
PID 3696 wrote to memory of 5000	3696	cmd.exe	89
PID 3696 wrote to memory of 3480	3696	cmd.exe	94
PID 3480 wrote to memory of 4488	3480	bcsfwx.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-09-25_8e3102624920e79a4d7802c8e59efce5_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-25_8e3102624920e79a4d7802c8e59efce5_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\bcsfwx.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-25_8e3102624920e79a4d7802c8e59efce5_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:3696
- - 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:5000
- - C:\Users\Admin\AppData\Local\Temp\bcsfwx.exe
    C:\Users\Admin\AppData\Local\Temp\\bcsfwx.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-25_8e3102624920e79a4d7802c8e59efce5_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:3480
  - - \??\c:\Program Files\vtskbfjiu\lfrhinysr.exe
      "c:\Program Files\vtskbfjiu\lfrhinysr.exe" "c:\Program Files\vtskbfjiu\lfrhinysr.dll",Interface C:\Users\Admin\AppData\Local\Temp\bcsfwx.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:4488

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

Indicator Removal

T1070

File Deletion

T1070.004

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

lfrhinysr.exe

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

Submit Download

bcsfwx.exe

Path C:\Users\Admin\AppData\Local\Temp\bcsfwx.exe
Size 233KB
SHA256 4e5cc7f2566d5151e60213d6dd1295deec52ad4f8c0189b31b0f28d934af8853
MD5 5f734c30b36322ee7a3876576a3975b4
SHA1 6371f3b81c639b812159b8dd580bda1315e6c16e
SHA512 5c8f28035dedec02034d9418be3e59c11bc69654486891788b5a1688fb018703522e7ddabcfb72b4daa7e472c48293f73deac10270bcd591b8c4a1dd605d0c23
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo6:tgmYA/nsYf8QdsINkZ6CQetFt
TLSH
T14834F18136A5CD77F0621B7E4D7B163A8536BE691B00709BD3C4ED4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

lfrhinysr.dll

Path \??\c:\Program Files\vtskbfjiu\lfrhinysr.dll
Size 168KB
SHA256 fb0f48d6f77274e85c11644bfb4753f621501c2293ceac398776bdd5c75e8e60
MD5 96f69b36c7e2c242e84e77589b482368
SHA1 898ce4d86f9669db9d591728a239cd3b401f6757
SHA512 ff97f540f105020c43f14ca3a17d6b8102b855c927cdf6300fc5d810dff0f8518cfaefff6d0756d30d1a2b9200c89cf9b651eb33dccc6ab6e73f77f81c9cec1c
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZM6:SJ8T1xE3ocg9f2nfLnwYsxf2Zj
TLSH
T1AAF312D3EFA649E0C0361BB07C53C10FB8620CA498725B5553D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3480-11-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3672-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3672-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4488-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4488-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4488-18-0x0000000010000000-0x000000001006D000-memory.dmp

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