farfli | dd09e10168871c7988afba96f364538ac11c0ef896a387a25c5a4dc13782a5b8

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/10/2026, 09:30

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General

Target
2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_coinminer_elex_wannacry.exe
Size 234KB
Sample261024-lgrcxsys6l
SHA256 dd09e10168871c7988afba96f364538ac11c0ef896a387a25c5a4dc13782a5b8
MD5 6d5c8724c3f43e1eaeca0f8a409b0576
SHA1 93630b07ef0eb40cef0d07ed392e870487a79808
SHA512 40463a5c16bcd778d74d0938cd5ab3995118845bdae634006548add595523d9fcf61a812fa68de0d2c4e411c98da152c1888026cddd579051ba624065dd5fa1d
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSo:tgmYA/nsYf8QdsINkZ6CQetF
TLSH
T1BC34F18136A5CD77F0221B7E4D7B163B8536BE651B00B09BD3C4AD4FB431AE46E2E209
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
behavioral2/memory/2104-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/2104-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2104-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2104-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4776-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/4776-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000500000000053e-3.dat	UPX
behavioral2/memory/4836-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
4836	kdjfm.exe

Executes dropped EXE 2 IoCs

pid	Process
4836	kdjfm.exe
2104	vyhpbxr.exe

Loads dropped DLL 1 IoCs

pid	Process
2104	vyhpbxr.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-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\epwtu\\vyhpbxr.exe \"c:\\Program Files\\epwtu\\vyhpbxr.dll\",Interface"	vyhpbxr.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)	\??\u:	vyhpbxr.exe
File opened (read-only)	\??\w:	vyhpbxr.exe
File opened (read-only)	\??\z:	vyhpbxr.exe
File opened (read-only)	\??\b:	vyhpbxr.exe
File opened (read-only)	\??\o:	vyhpbxr.exe
File opened (read-only)	\??\v:	vyhpbxr.exe
File opened (read-only)	\??\x:	vyhpbxr.exe
File opened (read-only)	\??\y:	vyhpbxr.exe
File opened (read-only)	\??\d:	vyhpbxr.exe
File opened (read-only)	\??\g:	vyhpbxr.exe
File opened (read-only)	\??\q:	vyhpbxr.exe
File opened (read-only)	\??\t:	vyhpbxr.exe
File opened (read-only)	\??\h:	vyhpbxr.exe
File opened (read-only)	\??\j:	vyhpbxr.exe
File opened (read-only)	\??\m:	vyhpbxr.exe
File opened (read-only)	\??\n:	vyhpbxr.exe
File opened (read-only)	\??\r:	vyhpbxr.exe
File opened (read-only)	\??\s:	vyhpbxr.exe
File opened (read-only)	\??\a:	vyhpbxr.exe
File opened (read-only)	\??\i:	vyhpbxr.exe
File opened (read-only)	\??\k:	vyhpbxr.exe
File opened (read-only)	\??\l:	vyhpbxr.exe
File opened (read-only)	\??\p:	vyhpbxr.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	vyhpbxr.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	\??\c:\Program Files\epwtu\vyhpbxr.exe	kdjfm.exe
File opened for modification	\??\c:\Program Files\epwtu	kdjfm.exe
File created	\??\c:\Program Files\epwtu\vyhpbxr.dll	kdjfm.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
4160	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 1 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	vyhpbxr.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	2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_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	kdjfm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vyhpbxr.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
4160	cmd.exe
3780	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	vyhpbxr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vyhpbxr.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3780	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2104	vyhpbxr.exe
2104	vyhpbxr.exe
2104	vyhpbxr.exe
2104	vyhpbxr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	vyhpbxr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4776	2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_coinminer_elex_wannacry.exe
4836	kdjfm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 4160	4776	2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_coinminer_elex_wannacry.exe	91
PID 4160 wrote to memory of 3780	4160	cmd.exe	93
PID 4160 wrote to memory of 4836	4160	cmd.exe	94
PID 4836 wrote to memory of 2104	4836	kdjfm.exe	95

C:\Users\Admin\AppData\Local\Temp\2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\kdjfm.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_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:4160
- - 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:3780
- - C:\Users\Admin\AppData\Local\Temp\kdjfm.exe
    C:\Users\Admin\AppData\Local\Temp\\kdjfm.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-22_6d5c8724c3f43e1eaeca0f8a409b0576_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:4836
  - - \??\c:\Program Files\epwtu\vyhpbxr.exe
      "c:\Program Files\epwtu\vyhpbxr.exe" "c:\Program Files\epwtu\vyhpbxr.dll",Interface C:\Users\Admin\AppData\Local\Temp\kdjfm.exe
      4⤵
      Executes dropped EXE
      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:2104

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:5124

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

vyhpbxr.exe

Path C:\Program Files\epwtu\vyhpbxr.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

kdjfm.exe

Path C:\Users\Admin\AppData\Local\Temp\kdjfm.exe
Size 234KB
SHA256 be16929e936db9c0860e3e6a079096ade4a69a7d469c0a0416f1187af87a6a6b
MD5 ea002f52dd7394cbd40b155995c3a6ff
SHA1 7aecbec078536625c2deaf20ebde06ab0220c369
SHA512 8b8516de05263a0a74b86f05861c2f2a75446a0696c6cb2d5fd74e167d0a65f5e850bf7a2914906c745d18bc650beece5b84df67dd385aa54caeb5e83ab9f0e6
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoB:tgmYA/nsYf8QdsINkZ6CQetFO
TLSH
T19034F18136A5CD77F0221B7E4D7B163B8536BE651B00B09BD3C4AD4FB431AE46E2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vyhpbxr.dll

Path \??\c:\Program Files\epwtu\vyhpbxr.dll
Size 168KB
SHA256 136df2bf23d994a3f11f1b43b51f9f729a951d5ad608ba83097d015c01d98690
MD5 7b6d68b972d9cac71f45877e6baf448c
SHA1 8b8502fe03d716877ae53b16f212e1f6e5700c94
SHA512 8669c394ca3b74b78c640500e8e044d14cc9252339ebff65decb83877b3a8f930ba22044d989a20cdde5d59647990e04e666b72e36bdd449ef9b35e66c91ab1d
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMG:SJ8T1xE3ocg9f2nfLnwYsxf2ZR
TLSH
T1DBF312D3EFA649E0C0361BB07C53C10FB8620C6498715B5653D9BEEA3DA668E493D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2104-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2104-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/2104-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4776-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4776-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4836-7-0x0000000000400000-0x0000000000468000-memory.dmp

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