farfli | 5909fce4467c8db1595d4a99aaf0755c0230c7a39987b938752e9fad320065b7

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260630-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/07/2026, 04:15

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General

Target
2026-07-04_8625e52299fe0b9f041837e7ab55de9a_coinminer_elex_wannacry.exe
Size 294KB
Sample260704-evcncse16n
SHA256 5909fce4467c8db1595d4a99aaf0755c0230c7a39987b938752e9fad320065b7
MD5 8625e52299fe0b9f041837e7ab55de9a
SHA1 407a005fd92a1c9ccca16bc911edc4b9706d56ab
SHA512 4f659aa190de2da9d6a27a44b8bc6b9539899a5a3078e29580a6ea7caa64fdd019c7e5745d5bd69e4bcf4d59968bc44e886571847ea063a6aa0c92f2d250f300
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrO:ywLcCmuErglr73aAD+
TLSH
T146540282E502DF07EC3FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer upx

Malware Config

Signatures

Family: Farfli
Farfli is a Windows backdoor written in C++.
backdoor farfli

Detects Farfli Backdoor 7 IoCs

resource	yara_rule
behavioral2/memory/4944-13-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/4944-12-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/4944-15-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/4944-18-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/4944-19-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/4944-20-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli
behavioral2/memory/4944-21-0x0000000010000000-0x0000000010058000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 7 IoCs

resource	yara_rule
behavioral2/memory/4944-13-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4944-12-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4944-15-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4944-18-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4944-19-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4944-20-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4944-21-0x0000000010000000-0x0000000010058000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/memory/4852-2-0x0000000000400000-0x0000000000483000-memory.dmp	UPX
behavioral2/files/0x000c000000019cb6-3.dat	UPX
behavioral2/memory/5500-6-0x0000000000400000-0x0000000000483000-memory.dmp	UPX

Badlisted process makes network request 8 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
1	4944	rundll32.exe
2	4944	rundll32.exe
3	4944	rundll32.exe
4	4944	rundll32.exe
5	4944	rundll32.exe
6	4944	rundll32.exe
7	4944	rundll32.exe
8	4944	rundll32.exe

Deletes itself 1 IoCs

pid	Process
5500	hfijs.exe

Executes dropped EXE 1 IoCs

pid	Process
5500	hfijs.exe

Loads dropped DLL 1 IoCs

pid	Process
4944	rundll32.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-1-5-21-2132828192-1552876075-2324613956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wetor = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\manxg\\jeghjurj.dll\",GetProc"	rundll32.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:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\d:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.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	rundll32.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4852-0-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/memory/4852-2-0x0000000000400000-0x0000000000483000-memory.dmp	upx
behavioral2/files/0x000c000000019cb6-3.dat	upx
behavioral2/memory/5500-6-0x0000000000400000-0x0000000000483000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\manxg	hfijs.exe
File created	\??\c:\Program Files\manxg\jeghjurj.dll	hfijs.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-04_8625e52299fe0b9f041837e7ab55de9a_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	hfijs.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
5656	cmd.exe
1440	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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1440	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4944	rundll32.exe
4944	rundll32.exe
4944	rundll32.exe
4944	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4944	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4852	2026-07-04_8625e52299fe0b9f041837e7ab55de9a_coinminer_elex_wannacry.exe
5500	hfijs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4852 wrote to memory of 5656	4852	2026-07-04_8625e52299fe0b9f041837e7ab55de9a_coinminer_elex_wannacry.exe	88
PID 5656 wrote to memory of 1440	5656	cmd.exe	90
PID 5656 wrote to memory of 5500	5656	cmd.exe	91
PID 5500 wrote to memory of 4944	5500	hfijs.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-07-04_8625e52299fe0b9f041837e7ab55de9a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-04_8625e52299fe0b9f041837e7ab55de9a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hfijs.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-04_8625e52299fe0b9f041837e7ab55de9a_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5656
- - 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:1440
- - C:\Users\Admin\AppData\Local\Temp\hfijs.exe
    C:\Users\Admin\AppData\Local\Temp\\hfijs.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-04_8625e52299fe0b9f041837e7ab55de9a_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:5500
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\manxg\jeghjurj.dll",GetProc C:\Users\Admin\AppData\Local\Temp\hfijs.exe
      4⤵
      Badlisted process makes network request
      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:4944

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

hfijs.exe

Path C:\Users\Admin\AppData\Local\Temp\hfijs.exe
Size 294KB
SHA256 109d6bd9a22c62eba8f0ffc2b215ae9e22b33407578e72e333b65085b471376e
MD5 f08d78ce150da4b16936e965587d5bb0
SHA1 ee21f8aa9a07af7da8d85348dc65799c26aad42f
SHA512 e3cad144f0caf56506ae8f63b5e1312a420a21ff8353d73d608e546f8fdb49e9ed0bcee1f72f6e8c334798e62001db291170ab4e1eff97baf4301c3f03194715
SSDEEP 6144:glYAIeOcaxmlJaErfbMCurC7xS3ZMOBnskyrOV:ywLcCmuErglr73aAD+C
TLSH
T1D9540282E502DF07EC3FC7B6813E5E291217AF521B705597D3C4B91E26B3682B63A0D9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

jeghjurj.dll

Path \??\c:\Program Files\manxg\jeghjurj.dll
Size 218KB
SHA256 7f0fdf0a2174becb808fb742f3dac3ab6b07588599cadf56841fd7068d0c1191
MD5 282aba93064fb62077dd193b35d34ee9
SHA1 5427c10c8d87caf9c761d6ddd8e0fc4092513d89
SHA512 4804200a076b2cea8422578d819a90399beef54e098e30d7ca232041b0d593e68f45e08ec06962452e59fc5ffabc3b0505fd6e4021f73a88aa410c84367e59c2
SSDEEP 6144:KORxNwD2VOidhzeXwddDzLi5vOQEqscr0ZTJauyt0:pnNwDTi3swddDiROXIG
TLSH
T1A324128BCF983873C5223379597951A0B9325290AFA1530DD2E6D34FA072BA2CF7B531
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4852-2-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4852-0-0x0000000000400000-0x0000000000483000-memory.dmp

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memory/4944-15-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-9-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-10-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

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memory/4944-13-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-12-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-16-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

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memory/4944-18-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-19-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-20-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/4944-21-0x0000000010000000-0x0000000010058000-memory.dmp

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memory/5500-6-0x0000000000400000-0x0000000000483000-memory.dmp

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