farfli | c69937167a802eacd64cbfa07ea0cbf061ae1fccccb171ecb1b78292ceecb5fa

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
20/08/2026, 12:30

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General

Target
2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe
Size 237KB
Sample260820-ppwt6axbka
SHA256 c69937167a802eacd64cbfa07ea0cbf061ae1fccccb171ecb1b78292ceecb5fa
MD5 70ce5fcf336d1a73a2d3f6987705878d
SHA1 eb6972b03d8a26d81a9b41d3a78e8a6d62309092
SHA512 39343ad52a60a2ec62da3dd6ee76bb47d22b82b57f7f7f2134547580ab44f98628b68109ad3265c033f4281c9eb7919f7b7185f9189614dbb2c28bdac32f1ebb
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocc:tgmYA/nsYf8QdsINkZ6CQetFG
TLSH
T1C634F18136A5CD77F0621B7D4D7B163A8536BE691B00B097D3C4AD4FF431AE4AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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/1432-15-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral1/memory/1432-18-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/1432-15-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1432-18-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1416-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/memory/1416-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/files/0x001700000002433e-4.dat	UPX
behavioral1/memory/1036-10-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1036	axaejlhd.exe

Executes dropped EXE 2 IoCs

pid	Process
1036	axaejlhd.exe
1432	xlg.exe

Loads dropped DLL 1 IoCs

pid	Process
1432	xlg.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-1-5-21-540052884-2969440504-464782435-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\yywfs\\xlg.exe \"c:\\Program Files\\yywfs\\xlgzd.dll\",Interface"	xlg.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)	\??\s:	xlg.exe
File opened (read-only)	\??\v:	xlg.exe
File opened (read-only)	\??\w:	xlg.exe
File opened (read-only)	\??\y:	xlg.exe
File opened (read-only)	\??\z:	xlg.exe
File opened (read-only)	\??\a:	xlg.exe
File opened (read-only)	\??\h:	xlg.exe
File opened (read-only)	\??\j:	xlg.exe
File opened (read-only)	\??\m:	xlg.exe
File opened (read-only)	\??\n:	xlg.exe
File opened (read-only)	\??\r:	xlg.exe
File opened (read-only)	\??\x:	xlg.exe
File opened (read-only)	\??\b:	xlg.exe
File opened (read-only)	\??\e:	xlg.exe
File opened (read-only)	\??\o:	xlg.exe
File opened (read-only)	\??\p:	xlg.exe
File opened (read-only)	\??\q:	xlg.exe
File opened (read-only)	\??\t:	xlg.exe
File opened (read-only)	\??\u:	xlg.exe
File opened (read-only)	\??\k:	xlg.exe
File opened (read-only)	\??\l:	xlg.exe
File opened (read-only)	\??\g:	xlg.exe
File opened (read-only)	\??\i:	xlg.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	xlg.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\yywfs	axaejlhd.exe
File created	\??\c:\Program Files\yywfs\xlgzd.dll	axaejlhd.exe
File created	\??\c:\Program Files\yywfs\xlg.exe	axaejlhd.exe
File opened for modification	\??\c:\Program Files\yywfs\xlg.exe	axaejlhd.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
4660	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	axaejlhd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xlg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_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
4660	cmd.exe
2400	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	xlg.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	xlg.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2400	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1432	xlg.exe
1432	xlg.exe
1432	xlg.exe
1432	xlg.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1432	xlg.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1416	2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe
1036	axaejlhd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1416 wrote to memory of 4660	1416	2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe	84
PID 4660 wrote to memory of 2400	4660	cmd.exe	86
PID 4660 wrote to memory of 1036	4660	cmd.exe	87
PID 1036 wrote to memory of 1432	1036	axaejlhd.exe	88

C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\axaejlhd.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_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:4660
- - 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:2400
- - C:\Users\Admin\AppData\Local\Temp\axaejlhd.exe
    C:\Users\Admin\AppData\Local\Temp\\axaejlhd.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_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:1036
  - - \??\c:\Program Files\yywfs\xlg.exe
      "c:\Program Files\yywfs\xlg.exe" "c:\Program Files\yywfs\xlgzd.dll",Interface C:\Users\Admin\AppData\Local\Temp\axaejlhd.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:1432

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

xlg.exe

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

Submit Download

axaejlhd.exe

Path C:\Users\Admin\AppData\Local\Temp\axaejlhd.exe
Size 237KB
SHA256 88494cafa666322b4778589073a35323a8bb610c851b4316d320b3855893507c
MD5 94b1b1d48c14b8184469800acefeccfc
SHA1 b6d585367f3cd05857268ba571e9dce194f0732d
SHA512 fcc389426869c4494acf0651a2d0dfba59f2ad9b880be28fd94dc6505d2309193ee4b1d9dd0e3eac54ba4b40a5372da9cf1f8ed487519df953806d6d48adb70e
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocJ:tgmYA/nsYf8QdsINkZ6CQetFf
TLSH
T1F934F18136A5CD77F0221B7D4D7B163A8536BE691B407097D3C4AE4FF431AE4AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

xlgzd.dll

Path \??\c:\Program Files\yywfs\xlgzd.dll
Size 168KB
SHA256 775729e0e6526274756098eebca1965b74754cdc7adab615dbd52ebff8be2bf4
MD5 ad51c243a420ec17254113932b5118d9
SHA1 707524480572644246bf60956baed5225403c634
SHA512 2016ce031724366e1a6627e6980e0d58e3677fd177a53f84040d958996afd08df6255a1f27c1b48d8ef1066acefec17e0b61f6e4407ff4d6f3e22c530205dfe0
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMA:SJ8T1xE3ocg9f2nfLnwYsxf2ZN
TLSH
T179F312D3EFB649E0C4361BB07C53C10FB8620CA498715B5543D9BEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1036-10-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1416-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1416-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1432-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/1432-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/1432-18-0x0000000010000000-0x000000001006D000-memory.dmp

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