farfli | bd113b4257e850a2f32ecf518e3540e90eef097c0f7c1e9cab70daab5974b35b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
30/10/2026, 03:45

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General

Target
2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_coinminer_elex_wannacry.exe
Size 131KB
Sample261030-ea6qpsdb84
SHA256 bd113b4257e850a2f32ecf518e3540e90eef097c0f7c1e9cab70daab5974b35b
MD5 5c4b6bfea341d4c4d9f6b74d8042e01d
SHA1 58ce883e346fe14e428f8eaa0859a31edaa2bb8e
SHA512 01ae4192ebb9f31bf17707baccfdc4c34e41f1ce58eab667235d4cddf32d791cd07622613422c1f3bd6279175ca55f4c9df27227f9b7244c2ff80aca1d9248c5
SSDEEP 1536:wWCfpn0RbXJdUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKpt0:wWmpn0RbXHxeeJ9w7EPWMWpt0
TLSH
T147D3C013ABAE44FAE0210D7405BA173647B66C592B245777D388EE1EAC72EC0EC3D356
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
behavioral1/memory/5148-12-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral1/memory/5148-13-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli
behavioral1/memory/5148-14-0x0000000010000000-0x0000000010045000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/5148-12-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5148-13-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/5148-14-0x0000000010000000-0x0000000010045000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1864-0-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral1/memory/1864-2-0x0000000000400000-0x000000000041E000-memory.dmp	UPX
behavioral1/files/0x001000000002164c-4.dat	UPX
behavioral1/memory/2512-7-0x0000000000400000-0x000000000041E000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
10	5148	rundll32.exe
16	5148	rundll32.exe
17	5148	rundll32.exe
32	5148	rundll32.exe

Executes dropped EXE 1 IoCs

pid	Process
2512	iyqjlsz.exe

Loads dropped DLL 1 IoCs

pid	Process
5148	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-1-5-21-2091445952-3649787497-104050984-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rsfsgytez\\cgsejluf.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)	\??\b:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\k:	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
behavioral1/memory/1864-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/memory/1864-2-0x0000000000400000-0x000000000041E000-memory.dmp	upx
behavioral1/files/0x001000000002164c-4.dat	upx
behavioral1/memory/2512-7-0x0000000000400000-0x000000000041E000-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
2232	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	rundll32.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	2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_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	iyqjlsz.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
5996	PING.EXE
2232	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
5996	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5148	rundll32.exe
5148	rundll32.exe
5148	rundll32.exe
5148	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5148	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1864	2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_coinminer_elex_wannacry.exe
2512	iyqjlsz.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 2232	1864	2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_coinminer_elex_wannacry.exe	86
PID 2232 wrote to memory of 5996	2232	cmd.exe	88
PID 2232 wrote to memory of 2512	2232	cmd.exe	89
PID 2512 wrote to memory of 5148	2512	iyqjlsz.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&c:\iyqjlsz.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_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:2232
- - 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:5996
- - \??\c:\iyqjlsz.exe
    c:\iyqjlsz.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-28_5c4b6bfea341d4c4d9f6b74d8042e01d_coinminer_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2512
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\rsfsgytez\cgsejluf.dll",AbortProc c:\iyqjlsz.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)
      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:5148

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

iyqjlsz.exe

Path C:\iyqjlsz.exe
Size 132KB
SHA256 0151dbefc0a5b3d6d10af128021485b48de65a6586a66785b104e47d7a2b9b70
MD5 b0c713b73fa6edc6d4865f5e2bbd89db
SHA1 e97475b5dd9210b70485bb5488c6273c1ed97d59
SHA512 e5d5b4dbed48ba06101ed7b57b0afb6a99e12b6f603b94de86d6d1d35e3bf55fcb3c481d73803cc74392f343becf5e8b99980664396c3358e0cb7f946e605958
SSDEEP 1536:wWCfpn0RbXJdUvElSdwS4ytneUDy9ZkM4A3FaJw/xfPWMDXKptE:wWmpn0RbXHxeeJ9w7EPWMWptE
TLSH
T18ED3C013ABAE44FAE0210D7406BA173647B56C592B245777D388EE1EAC72EC0EC3D356
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

cgsejluf.dll

Path \??\c:\rsfsgytez\cgsejluf.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

memory/1864-0-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1864-2-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2512-7-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/5148-10-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5148-12-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5148-11-0x0000000000F80000-0x0000000000F81000-memory.dmp

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memory/5148-13-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5148-14-0x0000000010000000-0x0000000010045000-memory.dmp

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memory/5148-15-0x0000000000F80000-0x0000000000F81000-memory.dmp

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