farfli | cc28076b99b4ce2ebfd255285c1a3d24661c5af0a938b76183329d5f8a4b14f7

Analysis

max time kernel
150s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/07/2026, 12:43

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General

Target
2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_coinminer_elex_wannacry.exe
Size 233KB
Sample260727-pxy99aer21
SHA256 cc28076b99b4ce2ebfd255285c1a3d24661c5af0a938b76183329d5f8a4b14f7
MD5 eae2a35ccbda1c27ffc52faca427b9e1
SHA1 2379c88881c38e210acce8679339ec4bd9478580
SHA512 9ae30700440d45e5e0169f9d9845fd08c3e7a28ae3bbd1390f16a7d5b655d6477e476962392ca53b5c81697aa864c8052a21663e2a4b3e688fc5c34ce84eb26f
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoc:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T19534F18136A5CD77F0621B7E4D7B163A8537BE691B00B48BD3C4AD4FB4319E46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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
behavioral2/memory/5836-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/5836-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/5836-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5836-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/3388-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000f000000016cb6-3.dat	UPX
behavioral2/memory/5476-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
5476	mbaswg.exe

Executes dropped EXE 2 IoCs

pid	Process
5476	mbaswg.exe
5836	gdyi.exe

Loads dropped DLL 1 IoCs

pid	Process
5836	gdyi.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\it = "c:\\Program Files\\kjgbzjoe\\gdyi.exe \"c:\\Program Files\\kjgbzjoe\\gdyid.dll\",Interface"	gdyi.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)	\??\a:	gdyi.exe
File opened (read-only)	\??\k:	gdyi.exe
File opened (read-only)	\??\l:	gdyi.exe
File opened (read-only)	\??\m:	gdyi.exe
File opened (read-only)	\??\o:	gdyi.exe
File opened (read-only)	\??\r:	gdyi.exe
File opened (read-only)	\??\t:	gdyi.exe
File opened (read-only)	\??\b:	gdyi.exe
File opened (read-only)	\??\g:	gdyi.exe
File opened (read-only)	\??\i:	gdyi.exe
File opened (read-only)	\??\j:	gdyi.exe
File opened (read-only)	\??\p:	gdyi.exe
File opened (read-only)	\??\s:	gdyi.exe
File opened (read-only)	\??\u:	gdyi.exe
File opened (read-only)	\??\x:	gdyi.exe
File opened (read-only)	\??\q:	gdyi.exe
File opened (read-only)	\??\w:	gdyi.exe
File opened (read-only)	\??\y:	gdyi.exe
File opened (read-only)	\??\z:	gdyi.exe
File opened (read-only)	\??\d:	gdyi.exe
File opened (read-only)	\??\h:	gdyi.exe
File opened (read-only)	\??\n:	gdyi.exe
File opened (read-only)	\??\v:	gdyi.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	gdyi.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\kjgbzjoe	mbaswg.exe
File created	\??\c:\Program Files\kjgbzjoe\gdyid.dll	mbaswg.exe
File created	\??\c:\Program Files\kjgbzjoe\gdyi.exe	mbaswg.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
2924	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	mbaswg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gdyi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_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
2924	cmd.exe
3248	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	gdyi.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	gdyi.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3248	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
5836	gdyi.exe
5836	gdyi.exe
5836	gdyi.exe
5836	gdyi.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5836	gdyi.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3388	2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_coinminer_elex_wannacry.exe
5476	mbaswg.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3388 wrote to memory of 2924	3388	2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_coinminer_elex_wannacry.exe	90
PID 2924 wrote to memory of 3248	2924	cmd.exe	92
PID 2924 wrote to memory of 5476	2924	cmd.exe	93
PID 5476 wrote to memory of 5836	5476	mbaswg.exe	94

C:\Users\Admin\AppData\Local\Temp\2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mbaswg.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_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:2924
- - 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:3248
- - C:\Users\Admin\AppData\Local\Temp\mbaswg.exe
    C:\Users\Admin\AppData\Local\Temp\\mbaswg.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-27_eae2a35ccbda1c27ffc52faca427b9e1_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:5476
  - - \??\c:\Program Files\kjgbzjoe\gdyi.exe
      "c:\Program Files\kjgbzjoe\gdyi.exe" "c:\Program Files\kjgbzjoe\gdyid.dll",Interface C:\Users\Admin\AppData\Local\Temp\mbaswg.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:5836

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

gdyi.exe

Path C:\Program Files\kjgbzjoe\gdyi.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

mbaswg.exe

Path C:\Users\Admin\AppData\Local\Temp\mbaswg.exe
Size 234KB
SHA256 fbb35f93f0fb23663c6bc248b9c6dbd34c22768e154e7b4450d3e00505643cab
MD5 2888778f9a74c2272f1e47e049008871
SHA1 fd10f798262288043640249627f9f945fdc85f83
SHA512 895def54dacad75e73991b40662961e67f511f3762a410bd941495c7cf2cb111c34b9816e8e451d6ed61cad434d24fdf33eb95813d93181b1b821ec31ec5e7a6
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocg:tgmYA/nsYf8QdsINkZ6CQetFK
TLSH
T1A234F18136A5CD77F0621B7E4D7B163A8537BE691B00B48BD3C4AD4FB4319E46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

gdyid.dll

Path \??\c:\Program Files\kjgbzjoe\gdyid.dll
Size 168KB
SHA256 bfb822ef0377f936c08bc691bfdf09910f18376ffaacb624dc87b2480fbb4272
MD5 6b04feb16889265882e4af3dbb0ddbd0
SHA1 8bf88bdb9d0cf623797fcd4e8838a8264fc7d318
SHA512 57c6cd31b04bce46e385755ff11da1ea06ea0b874735ab98d57ea49fac4813a20464a29a73ed733ec9fd93507a2a445a3901b43f82ab334943820344b4203691
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMW:SJ8T1xE3ocg9f2nfLnwYsxf2Zb
TLSH
T19BF312D3EFB649E0C0361BB07C53C10FB8620D6498725B5543D9BEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3388-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/3388-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/5476-7-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/5836-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/5836-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/5836-14-0x0000000010000000-0x000000001006D000-memory.dmp

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