farfli | 7e36a0a58b0ecd37a775cf22aeaa539a944cc75520d261ef63b32915d7ed78b4

General

Target
2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_coinminer_elex_wannacry.exe
Size 238KB
Sample260915-mljpbatvdx
SHA256 7e36a0a58b0ecd37a775cf22aeaa539a944cc75520d261ef63b32915d7ed78b4
MD5 6103dca73414d47d9a6dc0f006d5ab9a
SHA1 5e08a70bfd01306e25ef8c2ecfeda6ff7f382255
SHA512 a71861f9de77b2fb0d11b63d17a0a7bbc90e981e352127f34b1c835866682753ec2ae5622b177edc571554b036cdbca6c5267f69b021de14940dcf045d67328d
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:zgmYA/nsYf8QdsINkZ6CQetF
TLSH
T17834E18136A5CD77F0621BBD0D7B56368136BE691B00709BD3C4AD4FF031AE5AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery execution farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

C2

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
behavioral1/memory/1152-12-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral1/memory/1152-15-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/1152-12-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1152-15-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral1/files/0x00180000000242da-2.dat	UPX

Deletes itself 1 IoCs

pid	Process
4300	eelby.exe

Executes dropped EXE 2 IoCs

pid	Process
4300	eelby.exe
1152	amv.exe

Loads dropped DLL 1 IoCs

pid	Process
1152	amv.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-1-5-21-240542094-4193773837-3211495583-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\nahld\\amv.exe \"c:\\Program Files\\nahld\\amvrn.dll\",Interface"	amv.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)	\??\p:	amv.exe
File opened (read-only)	\??\b:	amv.exe
File opened (read-only)	\??\g:	amv.exe
File opened (read-only)	\??\i:	amv.exe
File opened (read-only)	\??\l:	amv.exe
File opened (read-only)	\??\n:	amv.exe
File opened (read-only)	\??\u:	amv.exe
File opened (read-only)	\??\z:	amv.exe
File opened (read-only)	\??\h:	amv.exe
File opened (read-only)	\??\m:	amv.exe
File opened (read-only)	\??\o:	amv.exe
File opened (read-only)	\??\q:	amv.exe
File opened (read-only)	\??\y:	amv.exe
File opened (read-only)	\??\a:	amv.exe
File opened (read-only)	\??\e:	amv.exe
File opened (read-only)	\??\k:	amv.exe
File opened (read-only)	\??\r:	amv.exe
File opened (read-only)	\??\s:	amv.exe
File opened (read-only)	\??\t:	amv.exe
File opened (read-only)	\??\v:	amv.exe
File opened (read-only)	\??\x:	amv.exe
File opened (read-only)	\??\j:	amv.exe
File opened (read-only)	\??\w:	amv.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	amv.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\nahld	eelby.exe
File created	\??\c:\Program Files\nahld\amvrn.dll	eelby.exe
File created	\??\c:\Program Files\nahld\amv.exe	eelby.exe
File opened for modification	\??\c:\Program Files\nahld\amv.exe	eelby.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
3032	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	2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_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	eelby.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amv.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
3032	cmd.exe
2916	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	amv.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	amv.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2916	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1152	amv.exe
1152	amv.exe
1152	amv.exe
1152	amv.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	amv.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1432	2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_coinminer_elex_wannacry.exe
4300	eelby.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1432 wrote to memory of 3032	1432	2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_coinminer_elex_wannacry.exe	84
PID 3032 wrote to memory of 2916	3032	cmd.exe	86
PID 3032 wrote to memory of 4300	3032	cmd.exe	87
PID 4300 wrote to memory of 1152	4300	eelby.exe	88

C:\Users\Admin\AppData\Local\Temp\2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\eelby.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_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:3032
- - 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:2916
- - C:\Users\Admin\AppData\Local\Temp\eelby.exe
    C:\Users\Admin\AppData\Local\Temp\\eelby.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-14_6103dca73414d47d9a6dc0f006d5ab9a_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:4300
  - - \??\c:\Program Files\nahld\amv.exe
      "c:\Program Files\nahld\amv.exe" "c:\Program Files\nahld\amvrn.dll",Interface C:\Users\Admin\AppData\Local\Temp\eelby.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:1152

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

amv.exe

Path C:\Program Files\nahld\amv.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

amvrn.dll

Path C:\Program Files\nahld\amvrn.dll
Size 168KB
SHA256 6e6527ee617398562839f2961f2d2b8d59bad2be53b40eb81e7859aebca3bf4d
MD5 f7715fcd6b9e33f3170793ddcc875c14
SHA1 25fdc06f1067d6d6387724296755ec49838b03ee
SHA512 b8817c98cfa0b34520a73c99ff342d40a253c212114cad5b4899d2f3e0f4ebcb0fd92e8050744dc8c3f3275878d8e41cc08a9f1d983cbd34f827b65658638e35
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMm:SJ8T1xE3ocg9f2nfLnwYsxf2ZR
TLSH
T112F312D3EFA649E0C0361BB07C53C10FB8620CA498715B5543D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

eelby.exe

Path C:\Users\Admin\AppData\Local\Temp\eelby.exe
Size 239KB
SHA256 334635c753966e5351e32b9b04a66fad52a1ef3b3737332f35263a9a170e0ff6
MD5 e5c043f930a29022d45af07a2651d72f
SHA1 536453c0ac281e91b58962be16b889af91fd6be3
SHA512 947b6412e5635d3191a82c7baaafcb4944dedd5184937cd72688d5222a76d1ed0042872cca8d43d99b356c23245f76e717fcd9abe7d1a18d783576a71bb2bcaa
SSDEEP 6144:yOFgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo/:zgmYA/nsYf8QdsINkZ6CQetFM
TLSH
T18A34E18136A5DD77F06217BD0D7B56368136BE691B00709BD3C4AE4FF031AE5AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1152-11-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/1152-12-0x0000000010000000-0x000000001006D000-memory.dmp

Download

memory/1152-15-0x0000000010000000-0x000000001006D000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads