farfli | 7ff220b3e811b8793762e96ce7bbd9d56a148ab116d172a7bc89352b3c283d39

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/07/2026, 22:25

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General

Target
2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe
Size 234KB
Sample260710-2cclzaft4x
SHA256 7ff220b3e811b8793762e96ce7bbd9d56a148ab116d172a7bc89352b3c283d39
MD5 84715f0784cb8913e6a912dda4bd0bef
SHA1 3b4a74c6397ab68af6657c984aba95b72a833e9a
SHA512 dd1241082db95f20eff253d3e2fab278d9be21100092e9f002a9328e0eeb5c1f35020850a20b7fb18a3fb77b4f322927c0a5e904f0a4a7f06ec9cab2783ae3b8
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T1F734F18136A5CD77F0621B7E4D7B163A8537BE691B00B48BD3C4AD4FB4319E46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery 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/2528-15-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral1/memory/2528-18-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/2528-15-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2528-18-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/844-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/memory/844-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/files/0x001b0000000242e8-4.dat	UPX
behavioral1/memory/1756-11-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
1756	vinkm.exe

Executes dropped EXE 2 IoCs

pid	Process
1756	vinkm.exe
2528	buhatojju.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	buhatojju.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\it = "c:\\Program Files\\vdniy\\buhatojju.exe \"c:\\Program Files\\vdniy\\buhatojju.dll\",Interface"	buhatojju.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)	\??\x:	buhatojju.exe
File opened (read-only)	\??\y:	buhatojju.exe
File opened (read-only)	\??\b:	buhatojju.exe
File opened (read-only)	\??\j:	buhatojju.exe
File opened (read-only)	\??\o:	buhatojju.exe
File opened (read-only)	\??\p:	buhatojju.exe
File opened (read-only)	\??\a:	buhatojju.exe
File opened (read-only)	\??\g:	buhatojju.exe
File opened (read-only)	\??\h:	buhatojju.exe
File opened (read-only)	\??\i:	buhatojju.exe
File opened (read-only)	\??\k:	buhatojju.exe
File opened (read-only)	\??\l:	buhatojju.exe
File opened (read-only)	\??\n:	buhatojju.exe
File opened (read-only)	\??\t:	buhatojju.exe
File opened (read-only)	\??\e:	buhatojju.exe
File opened (read-only)	\??\m:	buhatojju.exe
File opened (read-only)	\??\q:	buhatojju.exe
File opened (read-only)	\??\s:	buhatojju.exe
File opened (read-only)	\??\v:	buhatojju.exe
File opened (read-only)	\??\z:	buhatojju.exe
File opened (read-only)	\??\r:	buhatojju.exe
File opened (read-only)	\??\u:	buhatojju.exe
File opened (read-only)	\??\w:	buhatojju.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	buhatojju.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vdniy	vinkm.exe
File created	\??\c:\Program Files\vdniy\buhatojju.dll	vinkm.exe
File created	\??\c:\Program Files\vdniy\buhatojju.exe	vinkm.exe
File opened for modification	\??\c:\Program Files\vdniy\buhatojju.exe	vinkm.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	vinkm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	buhatojju.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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
820	cmd.exe
2908	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	buhatojju.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	buhatojju.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2908	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2528	buhatojju.exe
2528	buhatojju.exe
2528	buhatojju.exe
2528	buhatojju.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	buhatojju.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
844	2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe
1756	vinkm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 820	844	2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe	85
PID 820 wrote to memory of 2908	820	cmd.exe	87
PID 820 wrote to memory of 1756	820	cmd.exe	88
PID 1756 wrote to memory of 2528	1756	vinkm.exe	89

C:\Users\Admin\AppData\Local\Temp\2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:844
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vinkm.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-10_84715f0784cb8913e6a912dda4bd0bef_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:820
- - 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:2908
- - C:\Users\Admin\AppData\Local\Temp\vinkm.exe
    C:\Users\Admin\AppData\Local\Temp\\vinkm.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-10_84715f0784cb8913e6a912dda4bd0bef_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:1756
  - - \??\c:\Program Files\vdniy\buhatojju.exe
      "c:\Program Files\vdniy\buhatojju.exe" "c:\Program Files\vdniy\buhatojju.dll",Interface C:\Users\Admin\AppData\Local\Temp\vinkm.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:2528

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

buhatojju.exe

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

Submit Download

vinkm.exe

Path C:\Users\Admin\AppData\Local\Temp\vinkm.exe
Size 234KB
SHA256 e3e2f7e65f4a933b28cc864b07a8bf0492a2019a63e05629fa5af8014fdbd97c
MD5 94f2c8700e5479c91dc24fcb56642a98
SHA1 d3d5d3063a1495d246a3a6a6f3edb6e73412b619
SHA512 d446840fbb909426917b0f013ab40fcc499c5f4ed04a0a628102400048647892a141cfea2b99511b0d740a6f4713eb82260a223060a00d65861c0f9031dab670
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocN:tgmYA/nsYf8QdsINkZ6CQetF3
TLSH
T12E34F18136A5CD77F0621B7D4D7B163A8536BE691B00B09BD3C4AD4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

buhatojju.dll

Path \??\c:\Program Files\vdniy\buhatojju.dll
Size 168KB
SHA256 189c2d70f8cd0de75964d741e4b0b353c646729e12464de9489c803741ff167b
MD5 da42676e82e2d952e54008b663560964
SHA1 862b48fce375deb55f85a20176b8441b6071ccdf
SHA512 34bb0e90434fe7bd3d401b5c168ab10a567a0687676259565c89b7739781f08b38fa0842596342f2dd45d78b08cb03c5a5bb137f4085b1502ff257d7afd69c0f
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMM:SJ8T1xE3ocg9f2nfLnwYsxf2Zb
TLSH
T1AAF312D3EFA649E0C0361BB07C53C10FB8620C6498715B5553D9FEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/844-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/844-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/1756-11-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/2528-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2528-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2528-18-0x0000000010000000-0x000000001006D000-memory.dmp

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