farfli | a701cb04162b30af221f04363840292cbf81eeeb97ed5660823d852721657dd3

Analysis

max time kernel
148s
max time network
138s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
28/08/2026, 06:02

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General

Target
2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_coinminer_elex_wannacry.exe
Size 243KB
Sample260828-grwm6stdnd
SHA256 a701cb04162b30af221f04363840292cbf81eeeb97ed5660823d852721657dd3
MD5 f56ac9cdb48d1f6a7f25905d1916d95c
SHA1 d92376f1c0127519e825ba0219f4a6a25f0649fd
SHA512 cb7c1913b04f772579f84f58fcff459caa7bd017d0b44e784437bb525d016c118f8692e8338cd971374f5e8def17946616c12c9a8110a907adf702b32988214a
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T14F34E1813665CDB7F4621ABD4E3B56368136BE591B00B097D3C4AD4FF434AE5AE3E208
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
behavioral2/memory/4912-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/4912-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4912-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4912-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4260-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/4260-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000600000001b86d-3.dat	UPX
behavioral2/memory/4816-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4816	ubjts.exe

Executes dropped EXE 2 IoCs

pid	Process
4816	ubjts.exe
4912	rutsut.exe

Loads dropped DLL 1 IoCs

pid	Process
4912	rutsut.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-1-5-21-189034102-168398478-1159367937-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\afoiixs\\rutsut.exe \"c:\\Program Files\\afoiixs\\rutsut.dll\",Interface"	rutsut.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)	\??\r:	rutsut.exe
File opened (read-only)	\??\t:	rutsut.exe
File opened (read-only)	\??\u:	rutsut.exe
File opened (read-only)	\??\v:	rutsut.exe
File opened (read-only)	\??\x:	rutsut.exe
File opened (read-only)	\??\z:	rutsut.exe
File opened (read-only)	\??\s:	rutsut.exe
File opened (read-only)	\??\y:	rutsut.exe
File opened (read-only)	\??\i:	rutsut.exe
File opened (read-only)	\??\k:	rutsut.exe
File opened (read-only)	\??\n:	rutsut.exe
File opened (read-only)	\??\o:	rutsut.exe
File opened (read-only)	\??\w:	rutsut.exe
File opened (read-only)	\??\a:	rutsut.exe
File opened (read-only)	\??\b:	rutsut.exe
File opened (read-only)	\??\d:	rutsut.exe
File opened (read-only)	\??\h:	rutsut.exe
File opened (read-only)	\??\j:	rutsut.exe
File opened (read-only)	\??\m:	rutsut.exe
File opened (read-only)	\??\p:	rutsut.exe
File opened (read-only)	\??\q:	rutsut.exe
File opened (read-only)	\??\g:	rutsut.exe
File opened (read-only)	\??\l:	rutsut.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	rutsut.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\afoiixs	ubjts.exe
File created	\??\c:\Program Files\afoiixs\rutsut.dll	ubjts.exe
File created	\??\c:\Program Files\afoiixs\rutsut.exe	ubjts.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
3408	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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ubjts.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rutsut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3408	cmd.exe
4888	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	rutsut.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rutsut.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4888	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4912	rutsut.exe
4912	rutsut.exe
4912	rutsut.exe
4912	rutsut.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	rutsut.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4260	2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_coinminer_elex_wannacry.exe
4816	ubjts.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 3408	4260	2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_coinminer_elex_wannacry.exe	89
PID 3408 wrote to memory of 4888	3408	cmd.exe	91
PID 3408 wrote to memory of 4816	3408	cmd.exe	92
PID 4816 wrote to memory of 4912	4816	ubjts.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4260
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ubjts.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_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:3408
- - 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:4888
- - C:\Users\Admin\AppData\Local\Temp\ubjts.exe
    C:\Users\Admin\AppData\Local\Temp\\ubjts.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-28_f56ac9cdb48d1f6a7f25905d1916d95c_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:4816
  - - \??\c:\Program Files\afoiixs\rutsut.exe
      "c:\Program Files\afoiixs\rutsut.exe" "c:\Program Files\afoiixs\rutsut.dll",Interface C:\Users\Admin\AppData\Local\Temp\ubjts.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:4912

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

rutsut.exe

Path C:\Program Files\afoiixs\rutsut.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ubjts.exe

Path C:\Users\Admin\AppData\Local\Temp\ubjts.exe
Size 243KB
SHA256 67228ab08893d9796953d514778cefb91ceaf7249547bcb35aa8b9e8d789e0a2
MD5 66b3a5c993ad891ae9724b45839ee4e6
SHA1 b18ca107837569582c067c633758a0c65420d836
SHA512 948e38fd5021fdffafe0b19c8022f4b7584bdcb065672d0b3536b890c5346f98544dc7cc44eee7033669a91322adfb1a7ed10e0c1da9cc80a872ad585615e543
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo8:tgmYA/nsYf8QdsINkZ6CQetFX
TLSH
T15934E1813665CDB7F0621ABD4E3B56368136BE591B00B097D3C4AD4FF434AE5AE3E208
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

rutsut.dll

Path \??\c:\Program Files\afoiixs\rutsut.dll
Size 168KB
SHA256 6b72eb0f4fde997fc17b54e0ffa8b224f97f73b9b3e297e6c1d5bea7b74c13b6
MD5 38424a1eb02cb5c02b909046a48a779d
SHA1 6b65d03ff432ac9f2d3b0df2cd84b3f9470ad260
SHA512 902589c23fabe8578248a393f6e511d9b9c001b4d3f10e0bc20f92cb939c74b9961b61f804fb3e06e9fa538915ce90cc19513f0be9f48b4951199816e23c0b6f
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMo:SJ8T1xE3ocg9f2nfLnwYsxf2Zn
TLSH
T1A3F312D3EFB649E0C4361BB06C53C10FB8620CA498715B5543D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4260-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4260-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4816-7-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4912-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4912-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4912-14-0x0000000010000000-0x000000001006D000-memory.dmp

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