farfli | 0d5ce5b05324db19f169b0163a0f718a1ef372b1ebd8380a9776f4764612940d

General

Target
2026-10-21_512ca918e53b863fc157bb6604eb1a46_coinminer_elex_wannacry.exe
Size 400KB
Sample261021-khsfya112m
SHA256 0d5ce5b05324db19f169b0163a0f718a1ef372b1ebd8380a9776f4764612940d
MD5 512ca918e53b863fc157bb6604eb1a46
SHA1 00a4e4cab5b63c83e72b1380d34ed370d4d3ef67
SHA512 867bad17f43f0d3bb477eb44df86e0f161d3edc28233eecb6230702224c4860f4c177787e56325e0b22d48103a4d8d246e070cdfb5610910e47cc9dd25e24ac1
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T15A94D02272C48BA3C1866432CDA6A67CD3F5CD689C305E3773E9F65DDD36841423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit defense_evasion discovery execution farfli persistence spyware stealer

Malware Config

Signatures

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

Detects Farfli Backdoor 3 IoCs

resource	yara_rule
behavioral2/memory/2408-6-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/2408-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/2408-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/2408-6-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2408-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2408-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000019cb3-1.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	2408	rundll32.exe
3	2408	rundll32.exe
4	2408	rundll32.exe
5	2408	rundll32.exe

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
2364	ogcnr.exe

Executes dropped EXE 1 IoCs

pid	Process
2364	ogcnr.exe

Loads dropped DLL 1 IoCs

pid	Process
2408	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-1-5-21-53044966-3830981193-2402648431-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\iejddx\\gdskt.dll\",InitEngine"	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)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\d:	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\iejddx	ogcnr.exe
File created	\??\c:\Program Files\iejddx\gdskt.dll	ogcnr.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
5092	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 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\Domain	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	rundll32.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	ogcnr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-10-21_512ca918e53b863fc157bb6604eb1a46_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

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
5092	cmd.exe
4656	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
4656	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2408	rundll32.exe
2408	rundll32.exe
2408	rundll32.exe
2408	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
844	2026-10-21_512ca918e53b863fc157bb6604eb1a46_coinminer_elex_wannacry.exe
2364	ogcnr.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 5092	844	2026-10-21_512ca918e53b863fc157bb6604eb1a46_coinminer_elex_wannacry.exe	89
PID 5092 wrote to memory of 4656	5092	cmd.exe	91
PID 5092 wrote to memory of 2364	5092	cmd.exe	92
PID 2364 wrote to memory of 2408	2364	ogcnr.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-10-21_512ca918e53b863fc157bb6604eb1a46_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-21_512ca918e53b863fc157bb6604eb1a46_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:844
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ogcnr.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-21_512ca918e53b863fc157bb6604eb1a46_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:5092
- - 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:4656
- - C:\Users\Admin\AppData\Local\Temp\ogcnr.exe
    C:\Users\Admin\AppData\Local\Temp\\ogcnr.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-21_512ca918e53b863fc157bb6604eb1a46_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:2364
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\iejddx\gdskt.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\ogcnr.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)
      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:2408

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:5248

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Indicator Removal

1

T1070

File Deletion

Modify Registry

Pre-OS Boot

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

2

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

ogcnr.exe

Path C:\Users\Admin\AppData\Local\Temp\ogcnr.exe
Size 400KB
SHA256 ab840925a14eb2379bdba9785a5bea6d6adb846972f1e59d67aeac868b67f8b3
MD5 dd37c8f6c588749fbd341ad6a525adb1
SHA1 9ce13caaf52571ff6fd7dfaa4cddfd67d878bf97
SHA512 d8d952955313d6dab6f5838748d5cd614b14dd40c89a23892d553cff4413096094731be6f6b004e77eae8a41521fd95feaf52ad702f1251dc4788656af23dc11
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L8:jGmTju+mMC4ITJE8dfSJ/F6I
TLSH
T12D94D02272C48BA3C1866432CDA6A67CD3F5CD689C309E3773E9FA5DDD36841423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

gdskt.dll

Path \??\c:\Program Files\iejddx\gdskt.dll
Size 176KB
SHA256 72ad8a30908494e6ce20655853c316b552b5a3b1ded5866f78b5f7cc4bb7862c
MD5 97e4bbbe19c33a9377d8ec2ddc3e7c64
SHA1 906e35e5af55d5b03e55e24b2e8a7187450c5288
SHA512 e6a84e58e19f510306ef4ad6d1b1f2d0c179460d4b71c5beafa7461c48c11daa6380b7fa0c8688b51b0ed00c20ae44c055dd848691ddd937ea7e98fc8ef904ca
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocTt:1Jv2tOItshGYdMnYYVjasKbOWSFofTt
TLSH
T10C041261862D1C34D087B7717B05920DF6B453A491B9CB93F6B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2408-7-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/2408-6-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/2408-8-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/2408-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads