farfli | 7b14defd1e44c8d3a6121196d2ada2db3a08767223c14700e05c02ada2831824

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
09/08/2026, 06:41

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General

Target
2026-08-09_86c51714ef5fb3b5a780126592288784_coinminer_elex_wannacry.exe
Size 236KB
Sample260809-hfrqhsar6v
SHA256 7b14defd1e44c8d3a6121196d2ada2db3a08767223c14700e05c02ada2831824
MD5 86c51714ef5fb3b5a780126592288784
SHA1 1b2aaff1940ef15c732e7bcb552c102c283bec01
SHA512 7ba3c713ea62b85c940c9a0a641ddee2dddb3e24c081ec1fe11e7c9c209644a98a8fcb9a3a4928a4d8f26d72bdd51582fa3b4077c8eaf587f8b1a8d3111eceb7
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T13534F18136A5CD77F0621B7D4D7B163A8537BE691B00B097D3C4AD4FB431AE46E2E209
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/4304-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/4304-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4304-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4304-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4224-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/4224-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000a000000016cdf-3.dat	UPX
behavioral2/memory/4864-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
4864	cktyvxd.exe

Executes dropped EXE 2 IoCs

pid	Process
4864	cktyvxd.exe
4304	uecobr.exe

Loads dropped DLL 1 IoCs

pid	Process
4304	uecobr.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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\dikbw\\uecobr.exe \"c:\\Program Files\\dikbw\\uecobr.dll\",Interface"	uecobr.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)	\??\i:	uecobr.exe
File opened (read-only)	\??\l:	uecobr.exe
File opened (read-only)	\??\n:	uecobr.exe
File opened (read-only)	\??\q:	uecobr.exe
File opened (read-only)	\??\r:	uecobr.exe
File opened (read-only)	\??\s:	uecobr.exe
File opened (read-only)	\??\a:	uecobr.exe
File opened (read-only)	\??\g:	uecobr.exe
File opened (read-only)	\??\k:	uecobr.exe
File opened (read-only)	\??\m:	uecobr.exe
File opened (read-only)	\??\u:	uecobr.exe
File opened (read-only)	\??\v:	uecobr.exe
File opened (read-only)	\??\w:	uecobr.exe
File opened (read-only)	\??\b:	uecobr.exe
File opened (read-only)	\??\d:	uecobr.exe
File opened (read-only)	\??\h:	uecobr.exe
File opened (read-only)	\??\o:	uecobr.exe
File opened (read-only)	\??\x:	uecobr.exe
File opened (read-only)	\??\y:	uecobr.exe
File opened (read-only)	\??\z:	uecobr.exe
File opened (read-only)	\??\j:	uecobr.exe
File opened (read-only)	\??\p:	uecobr.exe
File opened (read-only)	\??\t:	uecobr.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	uecobr.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\dikbw	cktyvxd.exe
File created	\??\c:\Program Files\dikbw\uecobr.dll	cktyvxd.exe
File created	\??\c:\Program Files\dikbw\uecobr.exe	cktyvxd.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
3592	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	2026-08-09_86c51714ef5fb3b5a780126592288784_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cktyvxd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uecobr.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
3592	cmd.exe
3628	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	uecobr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	uecobr.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3628	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4304	uecobr.exe
4304	uecobr.exe
4304	uecobr.exe
4304	uecobr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4304	uecobr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4224	2026-08-09_86c51714ef5fb3b5a780126592288784_coinminer_elex_wannacry.exe
4864	cktyvxd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 3592	4224	2026-08-09_86c51714ef5fb3b5a780126592288784_coinminer_elex_wannacry.exe	89
PID 3592 wrote to memory of 3628	3592	cmd.exe	91
PID 3592 wrote to memory of 4864	3592	cmd.exe	92
PID 4864 wrote to memory of 4304	4864	cktyvxd.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-09_86c51714ef5fb3b5a780126592288784_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-09_86c51714ef5fb3b5a780126592288784_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\cktyvxd.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_86c51714ef5fb3b5a780126592288784_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:3592
- - 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:3628
- - C:\Users\Admin\AppData\Local\Temp\cktyvxd.exe
    C:\Users\Admin\AppData\Local\Temp\\cktyvxd.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-09_86c51714ef5fb3b5a780126592288784_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:4864
  - - \??\c:\Program Files\dikbw\uecobr.exe
      "c:\Program Files\dikbw\uecobr.exe" "c:\Program Files\dikbw\uecobr.dll",Interface C:\Users\Admin\AppData\Local\Temp\cktyvxd.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:4304

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

Replay Monitor

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Downloads

uecobr.exe

Path C:\Program Files\dikbw\uecobr.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

cktyvxd.exe

Path C:\Users\Admin\AppData\Local\Temp\cktyvxd.exe
Size 236KB
SHA256 1aa5f1ca8d84d1bd2c843437c6de133726c5024464ef229ba0a225923a63a947
MD5 28e34bfb95fa7af0e7a19f13c9644c6b
SHA1 0f06bcaa2dc79c18752fb75eb59a9b468cd0738d
SHA512 9a3cf80acb662b6933e8ede0ebb534bec1940dfb8fb51229cd2d132ac776eaeb036c22e9886cb81fa3a274b35e61500cff6bb4e78dab9c662fe0f481eebb1c56
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocl:tgmYA/nsYf8QdsINkZ6CQetFn
TLSH
T10A34F18136A5CD77F0621B7E4D7B163A8537BE691B00B097D3C4AD4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

uecobr.dll

Path \??\c:\Program Files\dikbw\uecobr.dll
Size 168KB
SHA256 a49c66b592b337f4f011ac2ee523fa8c8dd303bde2e5a52760365d7442e5ddf5
MD5 f0faf661ad9c8bed6fbf18619916784f
SHA1 3a693ef2c51779f46fd5e22799d2147a28d51529
SHA512 2308a133822382f968c2d56a7358d262842b1dc11ea458fdb3df031ca82c32f00fb987dcbc2866e65c3916dd4ceb488499b9832ed7959ff08ab016653d19ef0d
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMw:SJ8T1xE3ocg9f2nfLnwYsxf2ZP
TLSH
T1F3F312D3EFA649E0C0361BB07C53C10FB8620C6498725B5543D9BEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4224-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4224-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4304-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4304-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4304-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4864-7-0x0000000000400000-0x0000000000468000-memory.dmp

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