farfli | cd03d43e090e3bed3852af9e6c6b89513f09842085d3182ebc13d0b9988cb1ff

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/08/2026, 03:44

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General

Target
2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_coinminer_elex_wannacry.exe
Size 133KB
Sample260807-earlsafm2s
SHA256 cd03d43e090e3bed3852af9e6c6b89513f09842085d3182ebc13d0b9988cb1ff
MD5 ca9ea0eef70eafb7f9d4556ba0b124de
SHA1 098ed044f96445cea05aeff3f17780687c97fbb3
SHA512 15f8a6318d3d6d8084427ee62ede72371ea8e6d964e350eb0546cf62e5cd1ac6334fbb1a7f49615126c579da59646e7c6b88b689980e4003ce490ded4862d2ba
SSDEEP 1536:PWCfpn0RbXmUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpQT:PWmpn0RbXGxeeJ9w7EPWMWp
TLSH
T11BD3CF53AB7E84F6E0210C7406BA173543B5785A2B245773D388EE5EE872EC4EC3D25A
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/5772-10-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/5772-11-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral2/memory/5772-13-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/5772-10-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5772-11-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5772-13-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4936-0-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral2/memory/4936-2-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral2/files/0x001200000001157e-3.dat	UPX
behavioral2/memory/1904-6-0x0000000000400000-0x000000000041E000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	5772	rundll32.exe
3	5772	rundll32.exe
4	5772	rundll32.exe
5	5772	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
1904	vzfxysof.exe

Loads dropped DLL 1 IoCs

pid	Process
5772	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-1-5-21-1014449518-1831897916-4205727055-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\qgygu\\yveeqtl.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)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\i:	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/4936-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/memory/4936-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral2/files/0x001200000001157e-3.dat	upx
behavioral2/memory/1904-6-0x0000000000400000-0x000000000041E000-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
4692	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	vzfxysof.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_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
5096	PING.EXE
4692	cmd.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
5096	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5772	rundll32.exe
5772	rundll32.exe
5772	rundll32.exe
5772	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5772	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4936	2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_coinminer_elex_wannacry.exe
1904	vzfxysof.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 4692	4936	2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_coinminer_elex_wannacry.exe	91
PID 4692 wrote to memory of 5096	4692	cmd.exe	93
PID 4692 wrote to memory of 1904	4692	cmd.exe	94
PID 1904 wrote to memory of 5772	1904	vzfxysof.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\vzfxysof.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_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:4692
- - 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:5096
- - \??\c:\vzfxysof.exe
    c:\vzfxysof.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_ca9ea0eef70eafb7f9d4556ba0b124de_coinminer_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\qgygu\yveeqtl.dll",AbortProc c:\vzfxysof.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:5772

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4824

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

yveeqtl.dll

Path \??\c:\qgygu\yveeqtl.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

vzfxysof.exe

Path \??\c:\vzfxysof.exe
Size 133KB
SHA256 0aa9fb6f61b5cd273612a97e43f50980368866c3e768f49c399405c7f0986f8a
MD5 b5d984af8f2ba03c64dab7e98c5fa963
SHA1 6b178c427c56ce08bc0d807f07f937eb26a3a7c2
SHA512 215d4ce37320e6c286c86dcc0884c18eafa42418b303a127f4636193ce633daf0572cbaf837096a17bc9eb72f6a2836dfba1114971b64bfaffa477d32d40858e
SSDEEP 1536:PWCfpn0RbXmUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpQTy:PWmpn0RbXGxeeJ9w7EPWMWpD
TLSH
T12AD3BF53AB7E84F6E0210C7406BA173543B5685A2B245773D388EE5EEC71E84EC3D25A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1904-6-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4936-0-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4936-2-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/5772-10-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5772-12-0x0000000002C60000-0x0000000002C61000-memory.dmp

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memory/5772-9-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5772-11-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5772-13-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5772-14-0x0000000002C60000-0x0000000002C61000-memory.dmp

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