farfli | 4bf04c5dcffb70b4583dd63baafea895aedad013f1baeb7df1d0141a5fd62c5c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
05/05/2026, 12:12

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General

Target
2026-05-05_70674c3e01116c2f9af8e7e0048e8668_coinminer_elex_wannacry.exe
Size 280KB
Sample260505-pdplpsfs2w
SHA256 4bf04c5dcffb70b4583dd63baafea895aedad013f1baeb7df1d0141a5fd62c5c
MD5 70674c3e01116c2f9af8e7e0048e8668
SHA1 4cbc42912ea854cdc391aadeea72cd5dc26a2b52
SHA512 759a9fef9e8db4285f4d7c6f0cd42ee35c905c0bc0d241b72d1af9ff9f7ec1dc14662b24e3751e87432f0736182e56045844fa6899ee695b74edbaac2ed74839
SSDEEP 6144:btatPE5TxMe5sCcuYtbVmylSc0fKOjptn9:IPwT6sQu8IyEc0fKOjpd
TLSH
T1F4548C1272E048D6D1C96673CEB7AB74D3F9ED678D359AAB0BD8320D0E36940C217366
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 3 IoCs

resource	yara_rule
behavioral1/memory/708-17-0x0000000010000000-0x0000000010034000-memory.dmp	family_farfli
behavioral1/memory/708-21-0x0000000010000000-0x0000000010034000-memory.dmp	family_farfli
behavioral1/memory/708-27-0x0000000010000000-0x0000000010034000-memory.dmp	family_farfli

Detects executables containing base64 encoded User Agent 3 IoCs

resource	yara_rule
behavioral1/memory/708-17-0x0000000010000000-0x0000000010034000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/708-21-0x0000000010000000-0x0000000010034000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/708-27-0x0000000010000000-0x0000000010034000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

UPX dump on OEP (original entry point) 9 IoCs

resource	yara_rule
behavioral1/memory/4716-0-0x0000000000400000-0x000000000045C000-memory.dmp	UPX
behavioral1/memory/4716-3-0x0000000000400000-0x000000000045C000-memory.dmp	UPX
behavioral1/files/0x001100000001d8b6-5.dat	UPX
behavioral1/memory/2072-15-0x0000000000400000-0x000000000045C000-memory.dmp	UPX
behavioral1/memory/708-16-0x0000000010000000-0x0000000010034000-memory.dmp	UPX
behavioral1/files/0x00080000000243e5-14.dat	UPX
behavioral1/memory/708-17-0x0000000010000000-0x0000000010034000-memory.dmp	UPX
behavioral1/memory/708-21-0x0000000010000000-0x0000000010034000-memory.dmp	UPX
behavioral1/memory/708-27-0x0000000010000000-0x0000000010034000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
2072	htmse.exe

Executes dropped EXE 2 IoCs

pid	Process
2072	htmse.exe
708	bch.exe

Loads dropped DLL 1 IoCs

pid	Process
708	bch.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-1-5-21-2023547815-1162023398-1465618254-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OneMeture = "c:\\Program Files\\vxntj\\bch.exe \"c:\\Program Files\\vxntj\\bchkg.dll\",getPlus"	bch.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)	\??\s:	bch.exe
File opened (read-only)	\??\t:	bch.exe
File opened (read-only)	\??\v:	bch.exe
File opened (read-only)	\??\y:	bch.exe
File opened (read-only)	\??\b:	bch.exe
File opened (read-only)	\??\i:	bch.exe
File opened (read-only)	\??\g:	bch.exe
File opened (read-only)	\??\h:	bch.exe
File opened (read-only)	\??\k:	bch.exe
File opened (read-only)	\??\n:	bch.exe
File opened (read-only)	\??\q:	bch.exe
File opened (read-only)	\??\u:	bch.exe
File opened (read-only)	\??\w:	bch.exe
File opened (read-only)	\??\j:	bch.exe
File opened (read-only)	\??\l:	bch.exe
File opened (read-only)	\??\m:	bch.exe
File opened (read-only)	\??\o:	bch.exe
File opened (read-only)	\??\r:	bch.exe
File opened (read-only)	\??\x:	bch.exe
File opened (read-only)	\??\z:	bch.exe
File opened (read-only)	\??\a:	bch.exe
File opened (read-only)	\??\e:	bch.exe
File opened (read-only)	\??\p:	bch.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	bch.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/4716-0-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral1/memory/4716-3-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral1/files/0x001100000001d8b6-5.dat	upx
behavioral1/memory/2072-15-0x0000000000400000-0x000000000045C000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\vxntj\bch.exe	htmse.exe
File opened for modification	\??\c:\Program Files\vxntj	htmse.exe
File created	\??\c:\Program Files\vxntj\bchkg.dll	htmse.exe
File created	\??\c:\Program Files\vxntj\bch.exe	htmse.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	2026-05-05_70674c3e01116c2f9af8e7e0048e8668_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	htmse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bch.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
2040	cmd.exe
1552	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	bch.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	bch.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1552	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
708	bch.exe
708	bch.exe
708	bch.exe
708	bch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	708	bch.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4716	2026-05-05_70674c3e01116c2f9af8e7e0048e8668_coinminer_elex_wannacry.exe
2072	htmse.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 2040	4716	2026-05-05_70674c3e01116c2f9af8e7e0048e8668_coinminer_elex_wannacry.exe	86
PID 2040 wrote to memory of 1552	2040	cmd.exe	88
PID 2040 wrote to memory of 2072	2040	cmd.exe	89
PID 2072 wrote to memory of 708	2072	htmse.exe	90

C:\Users\Admin\AppData\Local\Temp\2026-05-05_70674c3e01116c2f9af8e7e0048e8668_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-05_70674c3e01116c2f9af8e7e0048e8668_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\htmse.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-05_70674c3e01116c2f9af8e7e0048e8668_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2040
- - 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:1552
- - C:\Users\Admin\AppData\Local\Temp\htmse.exe
    C:\Users\Admin\AppData\Local\Temp\\htmse.exe "C:\Users\Admin\AppData\Local\Temp\2026-05-05_70674c3e01116c2f9af8e7e0048e8668_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:2072
  - - \??\c:\Program Files\vxntj\bch.exe
      "c:\Program Files\vxntj\bch.exe" "c:\Program Files\vxntj\bchkg.dll",getPlus C:\Users\Admin\AppData\Local\Temp\htmse.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:708

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

Replay Monitor

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Downloads

bch.exe

Path C:\Program Files\vxntj\bch.exe
Size 60KB
SHA256 6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910
MD5 889b99c52a60dd49227c5e485a016679
SHA1 8fa889e456aa646a4d0a4349977430ce5fa5e2d7
SHA512 08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641
SSDEEP 1536:H9ykYCTdiHQKrFXmw2RQln5IUmDjoX6+:HlMHprF2nRQln5I
TLSH
T127532AC2FA00C171D4A7563019778F1A5766AC13DB728ACB94B0B4A41EB3291AD3E5FF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

bchkg.dll

Path C:\Program Files\vxntj\bchkg.dll
Size 91KB
SHA256 ba276faffd039f6e9b40c4c2d43c558ffcfa2fc2ca0b9a28991b4eb7c004c1cb
MD5 655b9243cc7c49ab0dd5c52be516b074
SHA1 323de831ff2d8ec68e471427558ad05322789edb
SHA512 cda073e9608cf89993886668274148f8a6e386e5565b7f4dcbec2d8e5e233a94fb6fa187df4fb9d65d7fd0ba2f4b1ee4626c05491edf51a78333e21e7de84a6e
SSDEEP 1536:EZQUlsWDkPJE0s0Late/traNh74O/oxvtVBL6KBY4e13qTbT12cUX9wENr9a9n:0pK9PJEszl4hv8rh6KfegTn1y9f9a9n
TLSH
T1179302CE148619DED58885711A23E870C414EC0A5FC1F33DCAAACEF17CB75DEA4299B6
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

htmse.exe

Path C:\Users\Admin\AppData\Local\Temp\htmse.exe
Size 281KB
SHA256 c5d94ea7c5b166248e976ecba2f62525a9219f042260097c02ed9dce8d5c65d4
MD5 7978ceca4a496a019780dd60b35d2f73
SHA1 2e309e81f13ee441a6d884ea1fc36d9bcdb47d9e
SHA512 af0f69a1c34d672922ec6fd551305e25d5297240c9f656e207302f34ce8345ae39e738d1d3e64d97187b27c67769bd0bdb963c29ca79fc2b9f031652e9f558bc
SSDEEP 6144:btatPE5TxMe5sCcuYtbVmylSc0fKOjptn9:IPwT6sQu8IyEc0fKOjpd
TLSH
T16C548C1272E048D6D1C96673CEB7AB74D3F9ED678D359AAB0BD8320D0E36940C217366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/708-16-0x0000000010000000-0x0000000010034000-memory.dmp

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memory/708-17-0x0000000010000000-0x0000000010034000-memory.dmp

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memory/708-18-0x0000000001530000-0x00000000015C6000-memory.dmp

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memory/708-21-0x0000000010000000-0x0000000010034000-memory.dmp

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memory/708-27-0x0000000010000000-0x0000000010034000-memory.dmp

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memory/708-45-0x0000000001530000-0x00000000015C6000-memory.dmp

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memory/2072-15-0x0000000000400000-0x000000000045C000-memory.dmp

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memory/2072-12-0x0000000000910000-0x00000000009A6000-memory.dmp

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memory/4716-2-0x0000000000940000-0x00000000009D6000-memory.dmp

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memory/4716-0-0x0000000000400000-0x000000000045C000-memory.dmp

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memory/4716-3-0x0000000000400000-0x000000000045C000-memory.dmp

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