farfli | 5472c3064d7c0658ea4244a3f73cf0275c9248ca55f4044afdc7964043349dc7

Analysis

max time kernel
148s
max time network
137s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/08/2026, 03:40

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General

Target
2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_coinminer_elex_wannacry.exe
Size 402KB
Sample260807-d8pdmszvct
SHA256 5472c3064d7c0658ea4244a3f73cf0275c9248ca55f4044afdc7964043349dc7
MD5 eeaadbe8f71c28086fed359114f2e6fc
SHA1 714b29db536dd7e7741eb0f01ca92489b89d4927
SHA512 80a9d2a4a9b495541831f22aa67cc6076be54f89407e70bcc118c78d3888e5e624f60be64058886e1337dd4e51a7078295b250eb0b006acd1887be0155b8d6f3
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumH:zdE3sJd1fm/+yb3OYs84/JH6
TLSH
T12994AF01E68741D6DE8225B081FA7377B378DA4D0F12C7E3BB68EE2E6E211D1953B119
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/2468-11-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2468-13-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli
behavioral2/memory/2468-16-0x0000000010000000-0x0000000010033000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral2/memory/2468-11-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2468-13-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2468-16-0x0000000010000000-0x0000000010033000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral2/memory/3552-0-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/3552-2-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/files/0x000700000001b85f-3.dat	UPX
behavioral2/files/0x000e00000001c584-7.dat	UPX
behavioral2/memory/2400-8-0x0000000000400000-0x0000000000471000-memory.dmp	UPX
behavioral2/memory/2468-10-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2468-11-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2468-13-0x0000000010000000-0x0000000010033000-memory.dmp	UPX
behavioral2/memory/2468-16-0x0000000010000000-0x0000000010033000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
2400	vtuumjofb.exe

Executes dropped EXE 2 IoCs

pid	Process
2400	vtuumjofb.exe
2468	abv.exe

Loads dropped DLL 1 IoCs

pid	Process
2468	abv.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\VIEW = "c:\\Program Files\\btvkv\\abv.exe \"c:\\Program Files\\btvkv\\abvon.dll\",Viewer"	abv.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)	\??\g:	abv.exe
File opened (read-only)	\??\v:	abv.exe
File opened (read-only)	\??\w:	abv.exe
File opened (read-only)	\??\x:	abv.exe
File opened (read-only)	\??\n:	abv.exe
File opened (read-only)	\??\p:	abv.exe
File opened (read-only)	\??\q:	abv.exe
File opened (read-only)	\??\s:	abv.exe
File opened (read-only)	\??\y:	abv.exe
File opened (read-only)	\??\d:	abv.exe
File opened (read-only)	\??\h:	abv.exe
File opened (read-only)	\??\k:	abv.exe
File opened (read-only)	\??\r:	abv.exe
File opened (read-only)	\??\u:	abv.exe
File opened (read-only)	\??\z:	abv.exe
File opened (read-only)	\??\i:	abv.exe
File opened (read-only)	\??\j:	abv.exe
File opened (read-only)	\??\l:	abv.exe
File opened (read-only)	\??\m:	abv.exe
File opened (read-only)	\??\o:	abv.exe
File opened (read-only)	\??\t:	abv.exe
File opened (read-only)	\??\a:	abv.exe
File opened (read-only)	\??\b:	abv.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	abv.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\btvkv	vtuumjofb.exe
File created	\??\c:\Program Files\btvkv\abvon.dll	vtuumjofb.exe
File created	\??\c:\Program Files\btvkv\abv.exe	vtuumjofb.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
5440	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	vtuumjofb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	abv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_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
5440	cmd.exe
5260	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	abv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	abv.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5260	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2468	abv.exe
2468	abv.exe
2468	abv.exe
2468	abv.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2468	abv.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3552	2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_coinminer_elex_wannacry.exe
2400	vtuumjofb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3552 wrote to memory of 5440	3552	2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_coinminer_elex_wannacry.exe	88
PID 5440 wrote to memory of 5260	5440	cmd.exe	90
PID 5440 wrote to memory of 2400	5440	cmd.exe	91
PID 2400 wrote to memory of 2468	2400	vtuumjofb.exe	92

C:\Users\Admin\AppData\Local\Temp\2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3552
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\vtuumjofb.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_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:5440
- - 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:5260
- - C:\Users\Admin\AppData\Local\Temp\vtuumjofb.exe
    C:\Users\Admin\AppData\Local\Temp\\vtuumjofb.exe "C:\Users\Admin\AppData\Local\Temp\2026-08-07_eeaadbe8f71c28086fed359114f2e6fc_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:2400
  - - \??\c:\Program Files\btvkv\abv.exe
      "c:\Program Files\btvkv\abv.exe" "c:\Program Files\btvkv\abvon.dll",Viewer C:\Users\Admin\AppData\Local\Temp\vtuumjofb.exe
      4⤵
      Executes dropped EXE
      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:2468

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

Replay Monitor

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Downloads

abv.exe

Path C:\Program Files\btvkv\abv.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vtuumjofb.exe

Path C:\Users\Admin\AppData\Local\Temp\vtuumjofb.exe
Size 402KB
SHA256 2db4dfb1696c7f3e22b46c88577706926a376ae0ce3d66edb913deadfb6ab054
MD5 1c479acf3a38b5f74ffbcbb05988f5d6
SHA1 f5644a38b0d26bcec3246f92e0b363f46f39e3b1
SHA512 fd6325fd991a57c3eaecff9ef79a8aae36714e67dfcce7a8c1a0ba14068d2d374d5136f15d72b06b9cada69a0c97267a10af13a1cb37ce8461e64b237c40f95c
SSDEEP 12288:zdDU6g13sJd1fm/+yb3O2js82ydU/DdKumHF:zdE3sJd1fm/+yb3OYs84/JH6F
TLSH
T11F94AF01E6C741D6DE8225B081FA7377B3789A4D0F12C7E3BB68EE2E6E211D1953B119
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

abvon.dll

Path \??\c:\Program Files\btvkv\abvon.dll
Size 89KB
SHA256 f2e58ef6bd498952370ad19d37389ba22b343baf5b8764b15eaf3ae32868b16d
MD5 d46379a30cdb3507713c4ef8818a6c14
SHA1 a02c2bb6f357c0f7f5e0d94799e0073f43f29104
SHA512 a34d55410f5d3473b8853d0d8a3384be34ef1fbfd7216bcb7085208471a618ffe6d4a671d9a48779f67189a30bd5105ce7675b26870bcee5fa351d52c97044d2
SSDEEP 1536:XHXqO6ZG03eyenOj9lgA/PObuTMT5NMCfL7ojaZf5aZlBlGJ:M1uF6Feu2NlQOBcGJ
TLSH
T1C29302C45669CD8BCCD87072727FAA4EE631C4CCB941ACB34A5E13A31B36AE3D41A745
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2400-8-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/2468-10-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2468-11-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2468-13-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/2468-16-0x0000000010000000-0x0000000010033000-memory.dmp

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memory/3552-0-0x0000000000400000-0x0000000000471000-memory.dmp

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memory/3552-2-0x0000000000400000-0x0000000000471000-memory.dmp

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