farfli | 9f8cfba49fc4d17e27b4eb1fd35801fd8d5d0ff012cbbc32bbd132740251beee

General

Target
2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe
Size 399KB
Sample260706-1e7z8aby21
SHA256 9f8cfba49fc4d17e27b4eb1fd35801fd8d5d0ff012cbbc32bbd132740251beee
MD5 537bb1fd6cefdd9f073c3ec3e7bde633
SHA1 9014d2ce7f16ada3741939db30e25048206a4479
SHA512 b06e4dbd630a1a48ae132c96be9e3dffdc7647ebcfb6f553de31180e0b737573b40fcece471d598e80f80bded522a6c218595f09f6ef6dff93c881c61c215024
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T15094D02272C48BA3C1866432CDA6A67CD3F5CD689C309E3773E9F65DDE36841423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit discovery farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 2 IoCs

resource	yara_rule
behavioral2/memory/2824-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/2824-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2824-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2824-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000006905-1.dat	UPX

Badlisted process makes network request 3 IoCs

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

flow	pid	Process
1	2824	rundll32.exe
4	2824	rundll32.exe
5	2824	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4676	dgrsh.exe

Executes dropped EXE 1 IoCs

pid	Process
4676	dgrsh.exe

Loads dropped DLL 1 IoCs

pid	Process
2824	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-1-5-21-3437697693-2283162250-3003737219-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\iedfe\\ktkzi.dll\",InitEngine"	rundll32.exe

Enumerates connected drives 3 TTPs 2 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:	rundll32.exe
File opened (read-only)	\??\b:	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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\iedfe	dgrsh.exe
File created	\??\c:\Program Files\iedfe\ktkzi.dll	dgrsh.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dgrsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3360	PING.EXE
5560	cmd.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
3360	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2824	rundll32.exe
2824	rundll32.exe
2824	rundll32.exe
2824	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2636	2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe
4676	dgrsh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 5560	2636	2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe	87
PID 5560 wrote to memory of 3360	5560	cmd.exe	89
PID 5560 wrote to memory of 4676	5560	cmd.exe	90
PID 4676 wrote to memory of 2824	4676	dgrsh.exe	91

C:\Users\Admin\AppData\Local\Temp\2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dgrsh.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5560
- - 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:3360
- - C:\Users\Admin\AppData\Local\Temp\dgrsh.exe
    C:\Users\Admin\AppData\Local\Temp\\dgrsh.exe "C:\Users\Admin\AppData\Local\Temp\2026-07-06_537bb1fd6cefdd9f073c3ec3e7bde633_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:4676
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\iedfe\ktkzi.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\dgrsh.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:2824

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

dgrsh.exe

Path C:\Users\Admin\AppData\Local\Temp\dgrsh.exe
Size 399KB
SHA256 02b285c4b032875ce29e64b13b5aa75af109938500359db1aa90d48820dfb8ef
MD5 f9dbed1bd8dc36324eed5c44fff26c27
SHA1 6a33e3b2d5740e2a78a3d999fdb98526718493f9
SHA512 fedb0277705cb2bac6a2774085d65b1902115a7ff35cbbcd14d4f0c7b0cfeb2f2eaa0fd3086a5155acf18f4f16481867913a9b78dfb722d6f38ff1616b55cac2
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T1EB94D02272C48BA3C1866432CDA6A67CD3F5CD689C309E3773E9F65DDE36841423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ktkzi.dll

Path \??\c:\Program Files\iedfe\ktkzi.dll
Size 176KB
SHA256 0d33a98e38906585519cdfce2cf11a2ddf3bd51dc0ded8e0ee45ec9fc6430296
MD5 88460a8989364211a85bd5cc281cc619
SHA1 f3815d343cdd1582e5eed026dee83a5bbe33630f
SHA512 7338f30778a2cd9e0d3bf2eb2c5259e0f1f4d9d71dbf56cde6a7f26c4c7b1295055d7a98f76d7a8ce228e4c1a9636656e6c7d3eefc6a86190bb93093d58c7af5
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocn:1Jv2tOItshGYdMnYYVjasKbOWSFofn
TLSH
T164041261862D1C34D087B7717B05920DF6B452A49179CB93F7B8AF2A3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2824-8-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/2824-7-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/2824-6-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/2824-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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