farfli | c69937167a802eacd64cbfa07ea0cbf061ae1fccccb171ecb1b78292ceecb5fa

Analysis

max time kernel
148s
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
20/08/2026, 12:30

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General

Target
2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe
Size 237KB
Sample260820-ppwt6axbka
SHA256 c69937167a802eacd64cbfa07ea0cbf061ae1fccccb171ecb1b78292ceecb5fa
MD5 70ce5fcf336d1a73a2d3f6987705878d
SHA1 eb6972b03d8a26d81a9b41d3a78e8a6d62309092
SHA512 39343ad52a60a2ec62da3dd6ee76bb47d22b82b57f7f7f2134547580ab44f98628b68109ad3265c033f4281c9eb7919f7b7185f9189614dbb2c28bdac32f1ebb
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSocc:tgmYA/nsYf8QdsINkZ6CQetFG
TLSH
T1C634F18136A5CD77F0621B7D4D7B163A8536BE691B00B097D3C4AD4FF431AE4AE2E209
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/1956-11-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli
behavioral2/memory/1956-14-0x0000000010000000-0x000000001006D000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/1956-11-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/1956-14-0x0000000010000000-0x000000001006D000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4944-0-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/memory/4944-2-0x0000000000400000-0x0000000000468000-memory.dmp	UPX
behavioral2/files/0x000a00000001136f-3.dat	UPX
behavioral2/memory/6020-7-0x0000000000400000-0x0000000000468000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
6020	cjkhwtgno.exe

Executes dropped EXE 2 IoCs

pid	Process
6020	cjkhwtgno.exe
1956	ajssa.exe

Loads dropped DLL 1 IoCs

pid	Process
1956	ajssa.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-1-5-21-3986082593-3624157295-3514260330-1000\Software\Microsoft\Windows\CurrentVersion\Run\it = "c:\\Program Files\\vtjfoohgw\\ajssa.exe \"c:\\Program Files\\vtjfoohgw\\ajssa.dll\",Interface"	ajssa.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)	\??\t:	ajssa.exe
File opened (read-only)	\??\y:	ajssa.exe
File opened (read-only)	\??\a:	ajssa.exe
File opened (read-only)	\??\x:	ajssa.exe
File opened (read-only)	\??\z:	ajssa.exe
File opened (read-only)	\??\d:	ajssa.exe
File opened (read-only)	\??\k:	ajssa.exe
File opened (read-only)	\??\l:	ajssa.exe
File opened (read-only)	\??\n:	ajssa.exe
File opened (read-only)	\??\o:	ajssa.exe
File opened (read-only)	\??\s:	ajssa.exe
File opened (read-only)	\??\g:	ajssa.exe
File opened (read-only)	\??\h:	ajssa.exe
File opened (read-only)	\??\i:	ajssa.exe
File opened (read-only)	\??\j:	ajssa.exe
File opened (read-only)	\??\u:	ajssa.exe
File opened (read-only)	\??\v:	ajssa.exe
File opened (read-only)	\??\w:	ajssa.exe
File opened (read-only)	\??\b:	ajssa.exe
File opened (read-only)	\??\m:	ajssa.exe
File opened (read-only)	\??\p:	ajssa.exe
File opened (read-only)	\??\q:	ajssa.exe
File opened (read-only)	\??\r:	ajssa.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	ajssa.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vtjfoohgw	cjkhwtgno.exe
File created	\??\c:\Program Files\vtjfoohgw\ajssa.dll	cjkhwtgno.exe
File created	\??\c:\Program Files\vtjfoohgw\ajssa.exe	cjkhwtgno.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
4352	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	2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_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	cjkhwtgno.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ajssa.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
4352	cmd.exe
5320	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	ajssa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ajssa.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5320	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1956	ajssa.exe
1956	ajssa.exe
1956	ajssa.exe
1956	ajssa.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1956	ajssa.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4944	2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe
6020	cjkhwtgno.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4944 wrote to memory of 4352	4944	2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe	88
PID 4352 wrote to memory of 5320	4352	cmd.exe	90
PID 4352 wrote to memory of 6020	4352	cmd.exe	91
PID 6020 wrote to memory of 1956	6020	cjkhwtgno.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4944
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\cjkhwtgno.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_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:4352
- - 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:5320
- - C:\Users\Admin\AppData\Local\Temp\cjkhwtgno.exe
    C:\Users\Admin\AppData\Local\Temp\\cjkhwtgno.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-20_70ce5fcf336d1a73a2d3f6987705878d_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:6020
  - - \??\c:\Program Files\vtjfoohgw\ajssa.exe
      "c:\Program Files\vtjfoohgw\ajssa.exe" "c:\Program Files\vtjfoohgw\ajssa.dll",Interface C:\Users\Admin\AppData\Local\Temp\cjkhwtgno.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:1956

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

Replay Monitor

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Downloads

ajssa.exe

Path C:\Program Files\vtjfoohgw\ajssa.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

cjkhwtgno.exe

Path C:\Users\Admin\AppData\Local\Temp\cjkhwtgno.exe
Size 237KB
SHA256 5a6ace0de081ef5469e5b3d20a55d6d3763e75a48292e141cf8f33e45d4089ce
MD5 27085692919408a5f8c1f89776c09f60
SHA1 cdd91f075bae230b9d36fb1460ccfbbeb932c251
SHA512 fb6d9d08dfea31a749bff2955b4ac60fe4f983007f1a97356ec82d0657dc16089ff2803a41de424b816dccc735ce488566efc989873a51110c792b655c38267f
SSDEEP 6144:eMgmYA/npA6SUqfjKfr4QdsICWkZ3h1SLCDFqnetKSoca:tgmYA/nsYf8QdsINkZ6CQetFM
TLSH
T1D334F18136A5CD77F0221B7D4D7B163A8536BE691B00B097D3C4AD4FF431AE4AE2E209
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ajssa.dll

Path \??\c:\Program Files\vtjfoohgw\ajssa.dll
Size 168KB
SHA256 bc54db9b9c88689c0ed30bdd9f5e2781d783a9a39112f7f242ba0c39b4a91dd5
MD5 d0daf99bfd12086fdd4de5ffa0dc3471
SHA1 afbc0075e2f2c0c9c900ec974f2187e7d26a0634
SHA512 fbf88b68d6141643d5b173dee29d79d8f6e9eb5641be2cf20f8f4bcdda7a9f07307a36dc65889b482c190ed4dfde820fda79f1012f66f465f2cdc5084cf472f7
SSDEEP 3072:S25S8qsPfVoCxEI5GRycgzQkf2+JKC8L1MwwYsg89R5gZMV:SJ8T1xE3ocg9f2nfLnwYsxf2Z2
TLSH
T12BF302D3EFA649E0C0361BB07C53C10FB8620C6498725B5552D9FEEA3DA668E453D3A1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1956-11-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/1956-10-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/1956-14-0x0000000010000000-0x000000001006D000-memory.dmp

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memory/4944-0-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/4944-2-0x0000000000400000-0x0000000000468000-memory.dmp

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memory/6020-7-0x0000000000400000-0x0000000000468000-memory.dmp

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