farfli | 56156d6f35c90c20028971e7298e04b7bddaf8c26ae4fbb16278117890599dbf

Analysis

max time kernel
149s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/10/2026, 17:13

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General

Target
2026-10-01_313dd24dde44370123311685945ab382_coinminer_elex_wannacry.exe
Size 232KB
Sample261002-vrexbatvdy
SHA256 56156d6f35c90c20028971e7298e04b7bddaf8c26ae4fbb16278117890599dbf
MD5 313dd24dde44370123311685945ab382
SHA1 2b06051be4ef9f2bbfa877f48ba1a916237252ee
SHA512 0123a8274edcfee6e04dc97317bf6da85c792c646b24e8c4d9aac9b8107b3f0148d23d2dcaab9d134808dc0bf2705a909ba771a7834771248c9011bc4fd447f4
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSob:tgmYA/nsYf8QdsINkZ6CQetFG
TLSH
T13334F18136A5CD77F0621B7E4D7B163B8536BE651B00B08BD3C4AD4FB431AE46E2E209
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
behavioral1/memory/1136-16-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral1/memory/1136-19-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral1/memory/1136-16-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/1136-19-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2940-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/memory/2940-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/files/0x00080000000216a1-4.dat	UPX
behavioral1/memory/4852-6-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral1/memory/4852-11-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
4852	wrivt.exe

Executes dropped EXE 2 IoCs

pid	Process
4852	wrivt.exe
1136	fvrolghx.exe

Loads dropped DLL 1 IoCs

pid	Process
1136	fvrolghx.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\it = "c:\\Program Files\\wsmwf\\fvrolghx.exe \"c:\\Program Files\\wsmwf\\fvrolghx.dll\",Interface"	fvrolghx.exe

Enumerates connected drives 3 TTPs 24 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)	\??\j:	fvrolghx.exe
File opened (read-only)	\??\n:	fvrolghx.exe
File opened (read-only)	\??\o:	fvrolghx.exe
File opened (read-only)	\??\r:	fvrolghx.exe
File opened (read-only)	\??\u:	fvrolghx.exe
File opened (read-only)	\??\y:	fvrolghx.exe
File opened (read-only)	\??\z:	fvrolghx.exe
File opened (read-only)	\??\a:	fvrolghx.exe
File opened (read-only)	\??\g:	fvrolghx.exe
File opened (read-only)	\??\h:	fvrolghx.exe
File opened (read-only)	\??\m:	fvrolghx.exe
File opened (read-only)	\??\t:	fvrolghx.exe
File opened (read-only)	\??\w:	fvrolghx.exe
File opened (read-only)	\??\e:	fvrolghx.exe
	\??\f:\	fvrolghx.exe
File opened (read-only)	\??\i:	fvrolghx.exe
File opened (read-only)	\??\k:	fvrolghx.exe
File opened (read-only)	\??\l:	fvrolghx.exe
File opened (read-only)	\??\p:	fvrolghx.exe
File opened (read-only)	\??\q:	fvrolghx.exe
File opened (read-only)	\??\s:	fvrolghx.exe
File opened (read-only)	\??\b:	fvrolghx.exe
File opened (read-only)	\??\v:	fvrolghx.exe
File opened (read-only)	\??\x:	fvrolghx.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	fvrolghx.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\wsmwf	wrivt.exe
File created	\??\c:\Program Files\wsmwf\fvrolghx.dll	wrivt.exe
File created	\??\c:\Program Files\wsmwf\fvrolghx.exe	wrivt.exe
File opened for modification	\??\c:\Program Files\wsmwf\fvrolghx.exe	wrivt.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
3352	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wrivt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fvrolghx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-01_313dd24dde44370123311685945ab382_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
3352	cmd.exe
6012	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	fvrolghx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fvrolghx.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
6012	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1136	fvrolghx.exe
1136	fvrolghx.exe
1136	fvrolghx.exe
1136	fvrolghx.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1136	fvrolghx.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2940	2026-10-01_313dd24dde44370123311685945ab382_coinminer_elex_wannacry.exe
4852	wrivt.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 3352	2940	2026-10-01_313dd24dde44370123311685945ab382_coinminer_elex_wannacry.exe	86
PID 3352 wrote to memory of 6012	3352	cmd.exe	88
PID 3352 wrote to memory of 4852	3352	cmd.exe	92
PID 4852 wrote to memory of 1136	4852	wrivt.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-10-01_313dd24dde44370123311685945ab382_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-01_313dd24dde44370123311685945ab382_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wrivt.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-01_313dd24dde44370123311685945ab382_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:3352
- - 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:6012
- - C:\Users\Admin\AppData\Local\Temp\wrivt.exe
    C:\Users\Admin\AppData\Local\Temp\\wrivt.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-01_313dd24dde44370123311685945ab382_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:4852
  - - \??\c:\Program Files\wsmwf\fvrolghx.exe
      "c:\Program Files\wsmwf\fvrolghx.exe" "c:\Program Files\wsmwf\fvrolghx.dll",Interface C:\Users\Admin\AppData\Local\Temp\wrivt.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:1136

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

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Downloads

fvrolghx.exe

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

Submit Download

wrivt.exe

Path C:\Users\Admin\AppData\Local\Temp\wrivt.exe
Size 233KB
SHA256 0b46908e79ff13ef719bc1554489c05fb05c420e6ae88a1484dfceb21e1ee1b0
MD5 cf5599ea1908ab2f7d96280c7de3603f
SHA1 d3aacf631b68ed0446e26d871641cfb19275dc58
SHA512 83b51ebd14891c4fe7b5ddaabcb62e7ae76d40ffc1862b3fdaa8e999dfafa11038c50307de116bee6bfb23df81b3545285bd1f5a134782e4fb90b407d8a7ee8b
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo6:tgmYA/nsYf8QdsINkZ6CQetFB
TLSH
T15334F18136A5CD77F0621B7D4D7B163A8536BE651B00B09BD3C4AD4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

fvrolghx.dll

Path \??\c:\Program Files\wsmwf\fvrolghx.dll
Size 168KB
SHA256 5a4432c9af748fee6b0f21c92ab0e335523c6e087cd6ff64088c47756d4d8250
MD5 8b428cca4a8af8bc33aac67ce7e5d4c6
SHA1 dbac6bad1f0f41050ad11b0940f898d78f3b85fc
SHA512 5157491b734bff2f26658a366e8bd5177a07a1ce2cdfe1486ac5a944c3c4c74be4b3f3aca9ae06031813c143c7bbaaebbe1e2b60bf64c76fe39cdd5167e5858c
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMX:SJ8T1xE3ocg9f2nfLnwYsxf2Z+
TLSH
T1F6F302D3EFA649E0C0361BB07C53C10FB8620CA498725B5553D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1136-15-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/1136-16-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/1136-19-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2940-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/2940-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4852-6-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4852-11-0x0000000000400000-0x0000000000468000-memory.dmp

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