farfli | 81a6b79fa05aa94f52dd79167ba48f67b5c25e09d4f840ce5856a75b86855a2b

General

Target
2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_coinminer_elex_wannacry.exe
Size 420KB
Sample260822-2datrszfjg
SHA256 81a6b79fa05aa94f52dd79167ba48f67b5c25e09d4f840ce5856a75b86855a2b
MD5 e468f3c87e2b06c5d78ac65a4bae0aef
SHA1 e5aa86bc663f49cd0c890645990b8050372fc74e
SHA512 d00f1098d75b4e6da713f92b0a681034b40735e733d686deda04aec12589c3d278de5c070435a6375a0daaed6892cc083cab7d2f6074eb6b374c134f509d56ee
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6L:jGmTju+mMC4ITJE8dfSJ/F6
TLSH
T17494D02272D0CBA3D0856472CE66E63CD3E5CC689D705E3373E9F65EEA36901423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

backdoor bootkit 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/4884-6-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/4884-8-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/4884-10-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/4884-6-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4884-8-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4884-10-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001b85f-1.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
7	4884	rundll32.exe
9	4884	rundll32.exe
10	4884	rundll32.exe
11	4884	rundll32.exe

Deletes itself 1 IoCs

pid	Process
1788	nmeie.exe

Executes dropped EXE 1 IoCs

pid	Process
1788	nmeie.exe

Loads dropped DLL 1 IoCs

pid	Process
4884	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-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\idqiitux\\drnfm.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)	\??\d:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	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\idqiitux	nmeie.exe
File created	\??\c:\Program Files\idqiitux\drnfm.dll	nmeie.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
5904	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	2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_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	nmeie.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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
5904	cmd.exe
5908	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
5908	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4884	rundll32.exe
4884	rundll32.exe
4884	rundll32.exe
4884	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4884	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3276	2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_coinminer_elex_wannacry.exe
1788	nmeie.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 5904	3276	2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_coinminer_elex_wannacry.exe	89
PID 5904 wrote to memory of 5908	5904	cmd.exe	91
PID 5904 wrote to memory of 1788	5904	cmd.exe	92
PID 1788 wrote to memory of 4884	1788	nmeie.exe	93

C:\Users\Admin\AppData\Local\Temp\2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3276
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nmeie.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_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:5904
- - 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:5908
- - C:\Users\Admin\AppData\Local\Temp\nmeie.exe
    C:\Users\Admin\AppData\Local\Temp\\nmeie.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-22_e468f3c87e2b06c5d78ac65a4bae0aef_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:1788
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\idqiitux\drnfm.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\nmeie.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:4884

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

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

nmeie.exe

Path C:\Users\Admin\AppData\Local\Temp\nmeie.exe
Size 420KB
SHA256 502cfabd9b5b457a209ba9432e7c4262ad45fb3972eb2800b585967db87d07a9
MD5 3168853411c16f30c8a6bd40276e0d26
SHA1 461bcd242a67f3a4e8dcd8f3478031f7f6ded9c0
SHA512 167780c8208bd4177687906813d1239b45ab3feb0ecc0e6f71ced36619ee5d36cf0117211566c5a1246258e883e4e852bcd4d0dbb04d7c4ad037aa0934413ebc
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6Lq:jGmTju+mMC4ITJE8dfSJ/F62
TLSH
T17694D02272D0CBA3C0856472CE66E63CD3E5CC689D705E3373E9F65EEA36901423A275
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

drnfm.dll

Path \??\c:\Program Files\idqiitux\drnfm.dll
Size 176KB
SHA256 147080a06b8a29921045c6b2e65f598c5b6b7005cf2e8071c655ba7b9c579d96
MD5 777c0fec9faaea4020d618434f7c4368
SHA1 666a329eac85d9110c1c34d623a04b08e7657ecc
SHA512 587debd01aef317966fa3ba66f93bc6780cebb871c49de589545c4f3616a70f7323be5a3c3ba4253b4b1f2845c200106edc150a20b3383e9ed90c159bcba0e8d
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFooc6:1Jv2tOItshGYdMnYYVjasKbOWSFof6
TLSH
T1BD041261862D1C34D087B7717B05920DF6B453A49079CB93F7B8AF2B3D12AEA806E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4884-6-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/4884-9-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/4884-8-0x0000000010000000-0x0000000010067000-memory.dmp

Download

memory/4884-10-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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