farfli | 4160f4af560ac7d31e61f0205a7e68788d9623dc4f0e9250fea13956d44ccbfe

General

Target
2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_coinminer_elex_wannacry.exe
Size 411KB
Sample260516-qlg29sd19v
SHA256 4160f4af560ac7d31e61f0205a7e68788d9623dc4f0e9250fea13956d44ccbfe
MD5 95ff8c34a06c1ca7ec987f2966f0476b
SHA1 e6a3a1f4dc700d23c781e40db4651feab4725b2d
SHA512 ed6337e51a5e4f76749e2dbceb6afe7d7ba6cfed54c907e2af4aa57fc7269c3426741dc2915c0e18fe133d5c281ab3c294fb88dcdc1ddc9835caed61ee0db7af
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LSs:jGmTju+mMC4ITJE8dfSJ/F6H
TLSH
T15094D02272D08BA3C1866432CE66E67CD3E5CC689C705E3773E9F65EDD36941423A274
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 3 IoCs

resource	yara_rule
behavioral2/memory/3868-7-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3868-9-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli
behavioral2/memory/3868-11-0x0000000010000000-0x0000000010067000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/3868-7-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3868-9-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/3868-11-0x0000000010000000-0x0000000010067000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/files/0x002100000002b2be-2.dat	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	3868	rundll32.exe
3	3868	rundll32.exe
4	3868	rundll32.exe
15	3868	rundll32.exe

Deletes itself 1 IoCs

pid	Process
3268	mzmibtzng.exe

Executes dropped EXE 1 IoCs

pid	Process
3268	mzmibtzng.exe

Loads dropped DLL 1 IoCs

pid	Process
3868	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-1-5-21-2824035265-2271499813-2042964211-1000\Software\Microsoft\Windows\CurrentVersion\Run\D3D = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\nfvea\\pbqrc.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)	\??\e:	rundll32.exe
File opened (read-only)	\??\j:	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	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)	\??\r:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
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\nfvea	mzmibtzng.exe
File created	\??\c:\Program Files\nfvea\pbqrc.dll	mzmibtzng.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	mzmibtzng.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_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
4172	cmd.exe
4240	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
4240	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3868	rundll32.exe
3868	rundll32.exe
3868	rundll32.exe
3868	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3868	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1148	2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_coinminer_elex_wannacry.exe
3268	mzmibtzng.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 4172	1148	2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_coinminer_elex_wannacry.exe	83
PID 4172 wrote to memory of 4240	4172	cmd.exe	85
PID 4172 wrote to memory of 3268	4172	cmd.exe	86
PID 3268 wrote to memory of 3868	3268	mzmibtzng.exe	87

C:\Users\Admin\AppData\Local\Temp\2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\mzmibtzng.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4172
- - 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:4240
- - C:\Users\Admin\AppData\Local\Temp\mzmibtzng.exe
    C:\Users\Admin\AppData\Local\Temp\\mzmibtzng.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-16_95ff8c34a06c1ca7ec987f2966f0476b_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:3268
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\Program Files\nfvea\pbqrc.dll",InitEngine C:\Users\Admin\AppData\Local\Temp\mzmibtzng.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:3868

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

mzmibtzng.exe

Path C:\Users\Admin\AppData\Local\Temp\mzmibtzng.exe
Size 411KB
SHA256 88df506530590f59470cf84bfcd97dcf62798bfc6877f0c9493aaffc46d558d8
MD5 505047cc57e1ffee4e96a304920a1e76
SHA1 84c07b6de2caa4084ba71422365ffc9c0dd3469e
SHA512 fff30823efaeb0c687f5b6b06309447cf2c275e46836562ffd324a4c5ad89adf0372b066fa0013a3eb1b3e003062fdb6e9e9f894c645eef8b1182613a963a591
SSDEEP 6144:TKgGmTBBuFIsBMkVuq4nITJJVn0wOa7sNvYfSkk/F6LSk:jGmTju+mMC4ITJE8dfSJ/F67
TLSH
T11894D02272D08BA3C1866432CE66E67CD3E5CC689C705E3773E9F65EED36941423A274
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

pbqrc.dll

Path \??\c:\Program Files\nfvea\pbqrc.dll
Size 176KB
SHA256 701445d14c4dbe1bc5a22894c84b4ef0bf87938884349feea4ab14eea45af816
MD5 9853f66f9cc06c16143252345879e9d8
SHA1 fc73c03a61a6dd14887d2846d4addcbdbc3f3bbf
SHA512 ad53d7b1a19e6f46c60956b04d8d59dc48bff835f64dd0e638c596b45eb236083cd6434a1b23bc3f186c9800e758eab900500189d7c6b2fa336c82263d7d6782
SSDEEP 3072:KiDJQVl82dm+NBiPAaHDb0gL/CyGbEPVMnY0RVjatbmKb6DWSFoocf:1Jv2tOItshGYdMnYYVjasKbOWSFoff
TLSH
T169041261862D1C34D087B7717B05920DF6B453A49179CB93F7B8AF2B3D12AEA805E353
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3868-7-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/3868-10-0x000000001005A000-0x000000001005B000-memory.dmp

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memory/3868-9-0x0000000010000000-0x0000000010067000-memory.dmp

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memory/3868-11-0x0000000010000000-0x0000000010067000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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