farfli | 3f465fa2946c82ff01e99da52b5dd332ae81a445249f69e015c25257dfeaf2a9

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 11:40

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General

Target
2026-08-03_614278d6c3507297f9d15446dc118858_coinminer_elex_wannacry.exe
Size 131KB
Sample260804-ns69maad82
SHA256 3f465fa2946c82ff01e99da52b5dd332ae81a445249f69e015c25257dfeaf2a9
MD5 614278d6c3507297f9d15446dc118858
SHA1 2f2d8c184a61797e5e6e164e6eaee5f743e68cc0
SHA512 7f43ec6713ad92254f3d4e01006f3cdeda4b19b429ee8dcddc76486b1704b34db752b54ab5e394967c94c2a7dce6a32c9b46a1719fbfd66601d2f2169736d0f0
SSDEEP 1536:PWCfpn0RbXmUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpQTF:PWmpn0RbXGxeeJ9w7EPWMWp+
TLSH
T199D3C053ABAE44F6E0210D7406BA173643B5685A2B245777D388EE1EEC72EC0EC3D356
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli gh0strat persistence rat spyware stealer upx

Malware Config

Extracted

Family

gh0strat

host123.zz.am:6658
http://23.104.160.115:8890/version.php
http://23.104.160.116:9963/

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 3 IoCs

resource	yara_rule
behavioral2/memory/1712-11-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1712-12-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/1712-13-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/1712-11-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1712-12-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1712-13-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1196-0-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral2/memory/1196-2-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral2/files/0x000c00000001b87d-3.dat	UPX
behavioral2/memory/3516-6-0x0000000000400000-0x000000000041E000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
3	1712	rundll32.exe
10	1712	rundll32.exe
11	1712	rundll32.exe
12	1712	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
3516	pqdcy.exe

Loads dropped DLL 1 IoCs

pid	Process
1712	rundll32.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-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\nrlxg\\bcaujdd.dll\",AbortProc"	rundll32.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:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.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	rundll32.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1196-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/memory/1196-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/files/0x000c00000001b87d-3.dat	upx
behavioral2/memory/3516-6-0x0000000000400000-0x000000000041E000-memory.dmp	upx

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
4316	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	2026-08-03_614278d6c3507297f9d15446dc118858_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	pqdcy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
4316	cmd.exe
4348	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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4348	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1712	rundll32.exe
1712	rundll32.exe
1712	rundll32.exe
1712	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1196	2026-08-03_614278d6c3507297f9d15446dc118858_coinminer_elex_wannacry.exe
3516	pqdcy.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 4316	1196	2026-08-03_614278d6c3507297f9d15446dc118858_coinminer_elex_wannacry.exe	89
PID 4316 wrote to memory of 4348	4316	cmd.exe	91
PID 4316 wrote to memory of 3516	4316	cmd.exe	92
PID 3516 wrote to memory of 1712	3516	pqdcy.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-03_614278d6c3507297f9d15446dc118858_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-03_614278d6c3507297f9d15446dc118858_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\pqdcy.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-03_614278d6c3507297f9d15446dc118858_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:4316
- - 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:4348
- - \??\c:\pqdcy.exe
    c:\pqdcy.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-03_614278d6c3507297f9d15446dc118858_coinminer_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3516
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\nrlxg\bcaujdd.dll",AbortProc c:\pqdcy.exe
      4⤵
      Badlisted process makes network request
      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:1712

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

bcaujdd.dll

Path \??\c:\nrlxg\bcaujdd.dll
Size 60KB
SHA256 42304221991ff2ea9d6c0252d42b90390caebc312a17126a4b13e9514f2b7d87
MD5 75e08aa9274df390fcdb1df3d0733bd5
SHA1 f3053cc10f33436aa1da7ec82a12ffdaff10ccfb
SHA512 dee8a07ca2142eb2ec1a5ce56af92605bb1c11e89da5d4335aee1098dc73375e422d9c53f201e571ff64b51c5cfa3928b1f26c0a23f4671dfbd91b1355d0e9db
SSDEEP 1536:Itj4HbqT+M0L2J2US62eSBQno/CUVzsxeOPw:ItqeT+M02J25qnLUVzs9w
TLSH
T1D05301286F6D2EDDFA3152B1E0985093FBD98B03043FA24D2544777F7D829631A93BA4
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

pqdcy.exe

Path \??\c:\pqdcy.exe
Size 131KB
SHA256 7ed7030ca6af4187fa3bc84e54f5d80dceeb876d4db225a672ecffbc483c5485
MD5 9aca8aac27ca6fb325989321765a6d95
SHA1 2f94ba37d0a4e7d7a94115991a4f710660864662
SHA512 c9059d30eed8403170ae4ab0fa9be6d62b93aa959cb2556ced763f5ceed68ca6c6e5327c38e201b42e5b308be4b002045d333bf28e4bb32951caa968b64c891e
SSDEEP 1536:PWCfpn0RbXmUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpQTj:PWmpn0RbXGxeeJ9w7EPWMWpI
TLSH
T13BD3CF13ABAE84F6E0210C7406BA173543B5685A2B245777D388EE5EE872EC0EC3D256
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1196-0-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1196-2-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1712-9-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1712-10-0x00000000027D0000-0x00000000027D1000-memory.dmp

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memory/1712-11-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1712-12-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1712-13-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/1712-14-0x00000000027D0000-0x00000000027D1000-memory.dmp

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memory/3516-6-0x0000000000400000-0x000000000041E000-memory.dmp

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