farfli | f6352fc78835c6656af8bd693643481a1440a16043e4c264076e6833e046675d

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
13/11/2026, 14:03

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General

Target
2026-11-11_3bde89244544fa8e0c4d9131c1748d78_coinminer_elex_wannacry.exe
Size 242KB
Sample261113-rc4ekswv9k
SHA256 f6352fc78835c6656af8bd693643481a1440a16043e4c264076e6833e046675d
MD5 3bde89244544fa8e0c4d9131c1748d78
SHA1 21cb54449a7c6676a1cce08a611e3add2fe5e0ba
SHA512 99d2b485882aa446066ea924ebdb75e35a62db9c5ecb406277622d5ac18eb328b79e060d80443128199fcf13066c1713d1d20c4f93914f1a467017a27ec2961d
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T1F534F18136A5CE77F0621ABD4D7B16368136BE591B00B097D3C4AD4FF431AE5AE3E209
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
behavioral2/memory/2880-15-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/2880-18-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2880-15-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2880-18-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3608-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/3608-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000d000000006908-3.dat	UPX
behavioral2/memory/1944-10-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
1944	zkpcq.exe

Executes dropped EXE 2 IoCs

pid	Process
1944	zkpcq.exe
2880	yuzeooeqq.exe

Loads dropped DLL 1 IoCs

pid	Process
2880	yuzeooeqq.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-1-5-21-2251218687-1689653882-3767565116-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\pfsscjvnp\\yuzeooeqq.exe \"c:\\Program Files\\pfsscjvnp\\yuzeooeqq.dll\",Interface"	yuzeooeqq.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:	yuzeooeqq.exe
File opened (read-only)	\??\j:	yuzeooeqq.exe
File opened (read-only)	\??\m:	yuzeooeqq.exe
File opened (read-only)	\??\n:	yuzeooeqq.exe
File opened (read-only)	\??\x:	yuzeooeqq.exe
File opened (read-only)	\??\y:	yuzeooeqq.exe
File opened (read-only)	\??\a:	yuzeooeqq.exe
File opened (read-only)	\??\b:	yuzeooeqq.exe
File opened (read-only)	\??\l:	yuzeooeqq.exe
File opened (read-only)	\??\o:	yuzeooeqq.exe
File opened (read-only)	\??\q:	yuzeooeqq.exe
File opened (read-only)	\??\s:	yuzeooeqq.exe
File opened (read-only)	\??\t:	yuzeooeqq.exe
File opened (read-only)	\??\z:	yuzeooeqq.exe
File opened (read-only)	\??\d:	yuzeooeqq.exe
File opened (read-only)	\??\h:	yuzeooeqq.exe
File opened (read-only)	\??\k:	yuzeooeqq.exe
File opened (read-only)	\??\u:	yuzeooeqq.exe
File opened (read-only)	\??\v:	yuzeooeqq.exe
File opened (read-only)	\??\p:	yuzeooeqq.exe
File opened (read-only)	\??\r:	yuzeooeqq.exe
File opened (read-only)	\??\w:	yuzeooeqq.exe
File opened (read-only)	\??\g:	yuzeooeqq.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	yuzeooeqq.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\pfsscjvnp	zkpcq.exe
File created	\??\c:\Program Files\pfsscjvnp\yuzeooeqq.dll	zkpcq.exe
File created	\??\c:\Program Files\pfsscjvnp\yuzeooeqq.exe	zkpcq.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
3308	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 1 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	yuzeooeqq.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	zkpcq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yuzeooeqq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-11-11_3bde89244544fa8e0c4d9131c1748d78_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
3308	cmd.exe
3260	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	yuzeooeqq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	yuzeooeqq.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3260	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2880	yuzeooeqq.exe
2880	yuzeooeqq.exe
2880	yuzeooeqq.exe
2880	yuzeooeqq.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2880	yuzeooeqq.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3608	2026-11-11_3bde89244544fa8e0c4d9131c1748d78_coinminer_elex_wannacry.exe
1944	zkpcq.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 3308	3608	2026-11-11_3bde89244544fa8e0c4d9131c1748d78_coinminer_elex_wannacry.exe	89
PID 3308 wrote to memory of 3260	3308	cmd.exe	91
PID 3308 wrote to memory of 1944	3308	cmd.exe	92
PID 1944 wrote to memory of 2880	1944	zkpcq.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-11-11_3bde89244544fa8e0c4d9131c1748d78_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-11_3bde89244544fa8e0c4d9131c1748d78_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\zkpcq.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-11_3bde89244544fa8e0c4d9131c1748d78_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:3308
- - 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:3260
- - C:\Users\Admin\AppData\Local\Temp\zkpcq.exe
    C:\Users\Admin\AppData\Local\Temp\\zkpcq.exe "C:\Users\Admin\AppData\Local\Temp\2026-11-11_3bde89244544fa8e0c4d9131c1748d78_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:1944
  - - \??\c:\Program Files\pfsscjvnp\yuzeooeqq.exe
      "c:\Program Files\pfsscjvnp\yuzeooeqq.exe" "c:\Program Files\pfsscjvnp\yuzeooeqq.dll",Interface C:\Users\Admin\AppData\Local\Temp\zkpcq.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      Reads the TCP/IP host and domain name from the registry
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2880

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

Replay Monitor

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Downloads

yuzeooeqq.exe

Path C:\Program Files\pfsscjvnp\yuzeooeqq.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

zkpcq.exe

Path C:\Users\Admin\AppData\Local\Temp\zkpcq.exe
Size 242KB
SHA256 fdbbde99a0dc363e42ecb9689335aa9f374218ee64a3abfa7281d5c4d41f14c9
MD5 a29e0a40eead5cd1b7c100702f72e51d
SHA1 05ccbc16c23e7987ff788116aecd9eb4469a02d8
SHA512 769541c8d324135614d402a33e55010449273586efdf9ae78a689c15e54ee6d5b0163076fd6e155b55c9510e06ed6efa16d8b5df7b67470a54e9cfc7343fd4f6
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoL:tgmYA/nsYf8QdsINkZ6CQetFO
TLSH
T1C734F18136A5CE77F0621A7D4D7B16368136BE591B04B097D3C4AE4FF431AE5AE3E208
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

yuzeooeqq.dll

Path \??\c:\Program Files\pfsscjvnp\yuzeooeqq.dll
Size 168KB
SHA256 0f52bfa712f75a8a3d6bc886de3b2c7f87721595a73396e6320b3fdec48f6d64
MD5 6bace208816ebc182d01d9084e0c5858
SHA1 8aee95591b5dc2993e2cf783dc6f5074589d5fc5
SHA512 00990a397a1f24e12ebf3196945680acfac10d2fb2b1dfd33b523efb4fde965a10257656f07cf3ccef0483e39f6050f1df6c66ef5865bd5598634276a0a22ead
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMJ:SJ8T1xE3ocg9f2nfLnwYsxf2ZK
TLSH
T164F312D3EFA649E0C4361BB07C53C10FB8620C6498715B5643D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1944-10-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/2880-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2880-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2880-18-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/3608-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3608-2-0x0000000000400000-0x0000000000468000-memory.dmp

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