farfli | c49ac40b2b2c0ac67af1886e81adef631385beafc609e9ce9b460174ccc9dda9

Analysis

max time kernel
149s
max time network
154s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
15/04/2026, 14:34

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General

Target
2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe
Size 245KB
Sample260415-rxstkscs5s
SHA256 c49ac40b2b2c0ac67af1886e81adef631385beafc609e9ce9b460174ccc9dda9
MD5 1e9497102afc99a5f55533ae816d66af
SHA1 52c483bf4327f75c28457b4fef7c307a42ef8acf
SHA512 f42f03b40f964f02cdc55d9593b540371e86a8d925baa7a3984b2f3086a74912fc574c82bc0733428cbce0ba9327126808160dd31fafccf671a7b702ce0a57f3
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycY:qtatPE5Txvev1zQBgexOdw6rpI9Fsd9
TLSH
T11D348C1233E80869E5EA7E33CEB6A630D7FAE9759C33D66F0794420D4E36904CB15366
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 2 IoCs

resource	yara_rule
behavioral2/memory/4960-16-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli
behavioral2/memory/4960-20-0x0000000010000000-0x0000000010038000-memory.dmp	family_farfli

Custom signature

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/4960-16-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/4960-20-0x0000000010000000-0x0000000010038000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Custom signature

UPX dump on OEP (original entry point) 8 IoCs

resource	yara_rule
behavioral2/memory/4408-0-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/memory/4408-2-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x002000000002b101-4.dat	UPX
behavioral2/memory/2520-10-0x0000000000400000-0x000000000043F000-memory.dmp	UPX
behavioral2/files/0x001b00000002b290-11.dat	UPX
behavioral2/memory/4960-14-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4960-16-0x0000000010000000-0x0000000010038000-memory.dmp	UPX
behavioral2/memory/4960-20-0x0000000010000000-0x0000000010038000-memory.dmp	UPX

Deletes itself 1 IoCs

pid	Process
2520	nhrrp.exe

Executes dropped EXE 2 IoCs

pid	Process
2520	nhrrp.exe
4960	ako.exe

Loads dropped DLL 1 IoCs

pid	Process
4960	ako.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-1-5-21-1383858298-2057492509-1726743289-1000\Software\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\bvgad\\ako.exe \"c:\\Program Files\\bvgad\\akoav.dll\",Group"	ako.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)	\??\b:	ako.exe
File opened (read-only)	\??\e:	ako.exe
File opened (read-only)	\??\h:	ako.exe
File opened (read-only)	\??\n:	ako.exe
File opened (read-only)	\??\o:	ako.exe
File opened (read-only)	\??\r:	ako.exe
File opened (read-only)	\??\t:	ako.exe
File opened (read-only)	\??\u:	ako.exe
File opened (read-only)	\??\a:	ako.exe
File opened (read-only)	\??\k:	ako.exe
File opened (read-only)	\??\m:	ako.exe
File opened (read-only)	\??\q:	ako.exe
File opened (read-only)	\??\w:	ako.exe
File opened (read-only)	\??\x:	ako.exe
File opened (read-only)	\??\y:	ako.exe
File opened (read-only)	\??\z:	ako.exe
File opened (read-only)	\??\g:	ako.exe
File opened (read-only)	\??\i:	ako.exe
File opened (read-only)	\??\j:	ako.exe
File opened (read-only)	\??\l:	ako.exe
File opened (read-only)	\??\p:	ako.exe
File opened (read-only)	\??\s:	ako.exe
File opened (read-only)	\??\v:	ako.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	ako.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x001b00000002b290-11.dat	upx
behavioral2/memory/4960-14-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4960-16-0x0000000010000000-0x0000000010038000-memory.dmp	upx
behavioral2/memory/4960-20-0x0000000010000000-0x0000000010038000-memory.dmp	upx

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\bvgad\akoav.dll	nhrrp.exe
File created	\??\c:\Program Files\bvgad\ako.exe	nhrrp.exe
File opened for modification	\??\c:\Program Files\bvgad\ako.exe	nhrrp.exe
File opened for modification	\??\c:\Program Files\bvgad	nhrrp.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nhrrp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ako.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.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
4352	cmd.exe
620	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	ako.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ako.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
620	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4960	ako.exe
4960	ako.exe
4960	ako.exe
4960	ako.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4960	ako.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4408	2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe
2520	nhrrp.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4408 wrote to memory of 4352	4408	2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe	80
PID 4352 wrote to memory of 620	4352	cmd.exe	82
PID 4352 wrote to memory of 2520	4352	cmd.exe	83
PID 2520 wrote to memory of 4960	2520	nhrrp.exe	84

C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\nhrrp.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_coinminer_elex_wannacry.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4352
- - 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:620
- - C:\Users\Admin\AppData\Local\Temp\nhrrp.exe
    C:\Users\Admin\AppData\Local\Temp\\nhrrp.exe "C:\Users\Admin\AppData\Local\Temp\2026-04-15_1e9497102afc99a5f55533ae816d66af_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:2520
  - - \??\c:\Program Files\bvgad\ako.exe
      "c:\Program Files\bvgad\ako.exe" "c:\Program Files\bvgad\akoav.dll",Group C:\Users\Admin\AppData\Local\Temp\nhrrp.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:4960

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

ako.exe

Path C:\Program Files\bvgad\ako.exe
Size 40KB
SHA256 8dcaeeebef9b9f3d41d295db145ffb3850f309d089c08125c7fa7034db5fd80e
MD5 22bb5bd901d8b25ac5b41edbb7d5053e
SHA1 8a935dd8d7e104fc553ff7e8b54a404f7b079334
SHA512 cc3fb68fd6791a08e4a7d1a8db8d07cfcc8c9b9dceec10b53f0cb7ee86473303a19be4f23e379f84c59e02d0568e7c066e21cd1300f6032dac4ba52f609f62e7
SSDEEP 768:C67uhQpPPp0nnqFk509FRdVcQX6N58hJYim1jLP3RRe:C67uhQpXp0nnqa5093jKNAmB3RR
TLSH
T10C134C02BE88C071DDA114B41A5DB337939DED604B1586D3593887EBAA2D3E39E343DE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

nhrrp.exe

Path C:\Users\Admin\AppData\Local\Temp\nhrrp.exe
Size 245KB
SHA256 faa11eba4d7ec5492347fba7b62c516781b4c836b0505f1ebf8b86c31b9dde06
MD5 681846d31ea9a0d34618489b7289c8b3
SHA1 d21956a95df368053bdafd31e142c6534c993656
SHA512 ec9d91ed64eefe1f76544823150cefb8d79552de89a0c1bb867b0595af54941abd52295d421491d376374048426716ca24a414e7c79c12d266062fbe660d1f77
SSDEEP 3072:qtaoOzbY5l/Tx1DUDcbouGYefD5h1zZCBgb3EInA3rdCKA9bwpfMrgsAHuskkycY:qtatPE5Txvev1zQBgexOdw6rpI9Fsd9
TLSH
T173348C1233E80869E5EA7E33CEB6A630D7FAE9759C33D66F0794420D4E36904CB15366
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

akoav.dll

Path \??\c:\Program Files\bvgad\akoav.dll
Size 97KB
SHA256 136c613a0d746ed2e3a183c0321616c45f103988a80e24ec0ca446361dc778c1
MD5 afc4b5c5fe17dd907381760e850e8f50
SHA1 a3c304c328de5ea78dc504f04267dfb3b4ac2942
SHA512 8b93ba85d05b8978be1f96a7f5977e1169f4a5e9132722ce187d8614621b6822eb0c5095d831dec8019b3ba228a79bc3777fcf950d2e75e05250c171c73a973d
SSDEEP 3072:BDpG6gzgHr5tCmfk455ecDBkdq+SStvAbGN:5pG6Sg9txRk/SS6bGN
TLSH
T1BBA301F6290D7DD6CB354C39D6628E35FA29EE348C589F887ECE6C13ACB8510E1641B1
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2520-10-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4408-0-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4408-2-0x0000000000400000-0x000000000043F000-memory.dmp

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memory/4960-14-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4960-16-0x0000000010000000-0x0000000010038000-memory.dmp

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memory/4960-20-0x0000000010000000-0x0000000010038000-memory.dmp

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