farfli | 5237edd4fc5af4a3d9719871225eadba7f8b7bdea7c0d74e36c56d989f14774a

Analysis

max time kernel
149s
max time network
149s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
19/04/2026, 18:10

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General

Target
2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe
Size 167KB
Sample260419-wr8easds2w
SHA256 5237edd4fc5af4a3d9719871225eadba7f8b7bdea7c0d74e36c56d989f14774a
MD5 2b41855f7b8138d98e77e35d8cfcf67a
SHA1 a0149957765ae785868da3fab9ff1e4a4e6b3bc3
SHA512 d93b4cdaabf026442976e12e2653b4319c5cc6ea255fbd8b4e989d8ad0fb2eaa37366a0b026209f1aba920a573dc2d4e8d8e8015f2e24db9c4a5b5835693364c
SSDEEP 3072:h1qLbqRhEAZqR29I5pmHr8/iOwkZ4YHvpzerWA0luLUq:h0AZ42S5pp/dWYHBAWd+
TLSH
T14DF3F101A759925AD733083F0A23527DA6BE7D344F1C75D3E7C9692E9138EE0AA3121F
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 4 IoCs

resource	yara_rule
behavioral2/memory/5572-8-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral2/memory/5572-12-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral2/memory/5572-14-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli
behavioral2/memory/5572-16-0x0000000010000000-0x000000001003A000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 4 IoCs

resource	yara_rule
behavioral2/memory/5572-8-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5572-12-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5572-14-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/5572-16-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Detects executables packed with VMProtect. 4 IoCs

resource	yara_rule
behavioral2/memory/5572-8-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/5572-12-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/5572-14-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral2/memory/5572-16-0x0000000010000000-0x000000001003A000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

UPX dump on OEP (original entry point) 7 IoCs

resource	yara_rule
behavioral2/files/0x000c000000027002-2.dat	UPX
behavioral2/files/0x001a00000002b429-5.dat	UPX
behavioral2/memory/5572-7-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/5572-8-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/5572-12-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/5572-14-0x0000000010000000-0x000000001003A000-memory.dmp	UPX
behavioral2/memory/5572-16-0x0000000010000000-0x000000001003A000-memory.dmp	UPX

Badlisted process makes network request 4 IoCs

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

flow	pid	Process
1	5572	rundll32.exe
3	5572	rundll32.exe
4	5572	rundll32.exe
5	5572	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4732	xbogf.exe

Executes dropped EXE 1 IoCs

pid	Process
4732	xbogf.exe

Loads dropped DLL 1 IoCs

pid	Process
5572	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-1-5-21-600123060-2148212387-2211176695-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\ffuyn\\omaqlaq.mqo\",Exit"	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	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)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\h:	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)	\??\y:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\n:	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

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000027002-2.dat	upx

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	xbogf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_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
808	PING.EXE
5768	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
808	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe
5572	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5572	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5520	2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe
4732	xbogf.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5520 wrote to memory of 5768	5520	2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe	78
PID 5768 wrote to memory of 808	5768	cmd.exe	80
PID 5768 wrote to memory of 4732	5768	cmd.exe	81
PID 4732 wrote to memory of 5572	4732	xbogf.exe	82

C:\Users\Admin\AppData\Local\Temp\2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5520
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xbogf.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:5768
- - 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:808
- - C:\Users\Admin\AppData\Local\Temp\xbogf.exe
    C:\Users\Admin\AppData\Local\Temp\\xbogf.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-19_2b41855f7b8138d98e77e35d8cfcf67a_coinminer_elex_wannacry.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4732
  - - \??\c:\windows\SysWOW64\rundll32.exe
      c:\windows\system32\rundll32.exe "c:\ffuyn\omaqlaq.mqo",Exit C:\Users\Admin\AppData\Local\Temp\xbogf.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:5572

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

xbogf.exe

Path C:\Users\Admin\AppData\Local\Temp\xbogf.exe
Size 168KB
SHA256 12b8a3bcac27a0be43a4463c0dc9695df8c2569320665571d3feef2bc0668da6
MD5 deed7cb82cf7fc77bbb56f6d1ae90ce3
SHA1 79f40ad9a642029c5e3cb2e1c4a761829e7f8c25
SHA512 62522033489c2a7b9e9e9138bcb0948366d2d68651ddd81ef8ac4c8bd74387c059a7157fc3b512fe7a1525c6679f6d58f2a098d0c998378657820acd89adae33
SSDEEP 3072:h1qLbqRhEAZqR29I5pmHr8/iOwkZ4YHvpzerWA0luLUq9:h0AZ42S5pp/dWYHBAWd+9
TLSH
T16BF3F101A759925AD733083F0A23527DA6BE7D344B1C75D3E7C9692E9138EE0AA3121F
MD5 SHA1 SHA512 SSDEEP TLSH

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omaqlaq.mqo

Path \??\c:\ffuyn\omaqlaq.mqo
Size 116KB
SHA256 53a1a5f96fce740b377bb053a358c0a50c63dfafddb8925d9aca66c852420872
MD5 f05a84544193f908045a170532883815
SHA1 3ad06ef6cc572a5e363d7fe05dcde5e646445994
SHA512 eda15ad3d6656a0146fd9476b205d1aefb7f4f6ecd1ea73b46b39157bb62f99d531114fc5ea32de485382577a7cbff4ae0edd4efdab1706c9840a9d165bac2ff
SSDEEP 3072:fCp96vhbrOz3bCMqKZ0V4Slz+n14q1/Jo5z5i4:6p961rOrDrZddJoz5i4
TLSH
T170C302D9B720C9EDC7E2727884BF6271170B908E4879D22F6CEEF89294711D0F0425B6
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5572-7-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5572-8-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5572-9-0x0000000002AC0000-0x0000000002B3C000-memory.dmp

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memory/5572-13-0x0000000002AC0000-0x0000000002B3C000-memory.dmp

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memory/5572-12-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5572-14-0x0000000010000000-0x000000001003A000-memory.dmp

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memory/5572-16-0x0000000010000000-0x000000001003A000-memory.dmp

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