farfli | 768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
04/05/2026, 09:06

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General

Target
768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe
Size 235KB
Sample260504-k249vafs8x
SHA256 768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7
MD5 d6f3beaffbbfbe1e3a71727546bc90ea
SHA1 084023daa24fcde9d4834a532dd712a2fcdd6ed8
SHA512 df2b6458b3d8db3fe384e96465f7c20b48dab2511ba22d2097bfc9ebefdbc8a52314850539feceea8401e5c4e533febc8ce9e8f5691b51ee799beb00839b665e
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFK:X2vnSwjaOcADw9cUeCOf
TLSH
T14C340100D7B2E5E8D44824BA0787D310EAE5DC9E7B736B7143D5E21FAB41F0AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli gh0strat persistence rat spyware stealer

Malware Config

Extracted

Family

gh0strat

107.163.241.193:6520
http://107.163.241.181:16300/
http://107.163.241.182:12354/login.php

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/4544-19-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral1/memory/4544-20-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli
behavioral1/memory/4544-27-0x0000000010000000-0x000000001004E000-memory.dmp	family_farfli

Deletes itself 1 IoCs

pid	Process
4856	dxsvp.exe

Executes dropped EXE 2 IoCs

pid	Process
4856	dxsvp.exe
4544	tvm.exe

Loads dropped DLL 1 IoCs

pid	Process
4544	tvm.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-1-5-21-312252282-3884318443-358092420-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Depend = "c:\\Program Files\\bdrfe\\tvm.exe \"c:\\Program Files\\bdrfe\\tvmpy.dll\",Compliance"	tvm.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)	\??\h:	tvm.exe
File opened (read-only)	\??\t:	tvm.exe
File opened (read-only)	\??\y:	tvm.exe
File opened (read-only)	\??\a:	tvm.exe
File opened (read-only)	\??\b:	tvm.exe
File opened (read-only)	\??\i:	tvm.exe
File opened (read-only)	\??\j:	tvm.exe
File opened (read-only)	\??\k:	tvm.exe
File opened (read-only)	\??\p:	tvm.exe
File opened (read-only)	\??\u:	tvm.exe
File opened (read-only)	\??\x:	tvm.exe
File opened (read-only)	\??\l:	tvm.exe
File opened (read-only)	\??\m:	tvm.exe
File opened (read-only)	\??\n:	tvm.exe
File opened (read-only)	\??\o:	tvm.exe
File opened (read-only)	\??\q:	tvm.exe
File opened (read-only)	\??\r:	tvm.exe
File opened (read-only)	\??\s:	tvm.exe
File opened (read-only)	\??\v:	tvm.exe
File opened (read-only)	\??\e:	tvm.exe
File opened (read-only)	\??\g:	tvm.exe
File opened (read-only)	\??\w:	tvm.exe
File opened (read-only)	\??\z:	tvm.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	tvm.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\bdrfe	dxsvp.exe
File created	\??\c:\Program Files\bdrfe\tvmpy.dll	dxsvp.exe
File created	\??\c:\Program Files\bdrfe\tvm.exe	dxsvp.exe
File opened for modification	\??\c:\Program Files\bdrfe\tvm.exe	dxsvp.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	dxsvp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tvm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.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
1320	cmd.exe
2628	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	tvm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	tvm.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2628	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4544	tvm.exe
4544	tvm.exe
4544	tvm.exe
4544	tvm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4544	tvm.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2848	768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe
4856	dxsvp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 1320	2848	768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe	85
PID 1320 wrote to memory of 2628	1320	cmd.exe	87
PID 1320 wrote to memory of 4856	1320	cmd.exe	88
PID 4856 wrote to memory of 4544	4856	dxsvp.exe	89

C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe
"C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dxsvp.exe "C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1320
- - 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:2628
- - C:\Users\Admin\AppData\Local\Temp\dxsvp.exe
    C:\Users\Admin\AppData\Local\Temp\\dxsvp.exe "C:\Users\Admin\AppData\Local\Temp\768a2de91caa64ecff570607dc33effa80207b7a0288b5151ed5f87042eb91e7.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:4856
  - - \??\c:\Program Files\bdrfe\tvm.exe
      "c:\Program Files\bdrfe\tvm.exe" "c:\Program Files\bdrfe\tvmpy.dll",Compliance C:\Users\Admin\AppData\Local\Temp\dxsvp.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:4544

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

dxsvp.exe

Path C:\Users\Admin\AppData\Local\Temp\dxsvp.exe
Size 236KB
SHA256 0bb5e8c413271e26246018379e830cafc8be914d0ef4bc21a1a78d55313a2b97
MD5 07e563301a474e1c2286488787caf83e
SHA1 79469c024a179118bb552cd61345dc6a4ed12add
SHA512 490f4b8c5fbf8f72cb427a09405f62ed57469f9bed84f00dbd0c27a61d82e62090b5a06ba77ffa56d33a830c91f670e20b1da27175d39153b5f9d7616247c443
SSDEEP 3072:fP5gvNVLIfHQja1RfmLQADwSKkhU+tLgT5lODbiC8r1PkTFKu:X2vnSwjaOcADw9cUeCOfb
TLSH
T1DD340200D7B2E5E8D44824BA0787D310EAE5DC9E7F736B7143D5E31FAB41F0AA4AA194
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

tvm.exe

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

Submit Download

tvmpy.dll

Path \??\c:\Program Files\bdrfe\tvmpy.dll
Size 141KB
SHA256 97504f3912d2b67615a311498eb271060ae81d5f6a4189307e484e6f3ac31721
MD5 dc4499c03d147602605b48c19584ad10
SHA1 39e89dcaa7c9dc3ae08865479af8419fe2243b48
SHA512 41b9b6d150dc8671d9b0b2318d984acdf5df7c18750aa1b29581a23d3035e5901eb40a688910c74ff259cee0593f6dc9c0eb4008e7f0d445cef8950dca5503a1
SSDEEP 3072:RGmRmNJToTJfp2D1QzpSyiJEkGSPf1bc4l6:RGMmfToTJY6zpSyvkGSn1tl6
TLSH
T13BE312E0E3A7C4B6C2695B3147937DF31628F4346B18072AFD62A32769394C44A9DB1A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2848-0-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2848-1-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2848-4-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/2848-2-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4544-21-0x0000000000780000-0x00000000007E3000-memory.dmp

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memory/4544-19-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4544-20-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4544-24-0x0000000000780000-0x00000000007E3000-memory.dmp

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memory/4544-26-0x0000000000780000-0x00000000007E3000-memory.dmp

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memory/4544-27-0x0000000010000000-0x000000001004E000-memory.dmp

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memory/4544-42-0x0000000000780000-0x00000000007E3000-memory.dmp

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memory/4856-15-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4856-9-0x0000000000400000-0x000000000044901D-memory.dmp

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memory/4856-8-0x0000000000400000-0x000000000044901D-memory.dmp

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